PTGui 13.4 /13.5 TIFF export bug?

[Geoffrey LORD]

Hey,

Just tried using the new version to see if it worked with my camera's white balance (see post) and it works. However, I have encountered another issue and I think it's related to the new update.
After exporting a TIFF file, I always open it in GigaPX Tools PRO to transform it using the web viewer feature for my website. After exporting with 13.4 / 13.5, I get "Input file read error" message:



I have tried to export the exact same images with 13.3 and GigaPX Tools works fine, as it had before. 
Here are the exported tiffs and raw files if you want to try for yourself, perhaps I'm doing something wrong? Perhaps the bug is linked to the GFX 100SII?
Google drive

EDIT: 
I was thinking that the issue could be linked to my camera so I tested my previous cameras' photos with 13.5. The results are quite strange:
5D MarkIV: PTGui Import OK -> GigaPX Tools Bug
GFX 100S: PTGui Import BUG (screenshot) 
GFX 100SII: PTGui Import OK -> GigaPX Tools Bug



Seems like the 100S and 100SII might have conflicting data? Doesn't explain why the 5D TIFF file is also bugged though... I'm out of ideas!

Sorry for bringing more problems, 
Geoffrey

[PTGui Support]

Hi Geoffrey,

I think the problem in GigaPX Tools is due to the compression of PTGui's
TIFF output. PTGui 13.5 defaults to using ZIP compression for TIFF
output (previously it used Packbits by default). Perhaps GigaPX Tools
doesn't support this. See the Settings button next to the file format in
the Create Panorama tab.

The LibRaw input/output error is something different, this looks like it
might be a problem in PTGui. I can't reproduce this though. When I try,
all your raw files load fine in PTGui 13.5 on Windows. How did you
trigger the error?

Kind regards,

Joost Nieuwenhuijse
www.ptgui.com

On 2/26/26 15:34, Geoffrey LORD wrote:
> Hey,
>
> Just tried using the new version to see if it worked with my camera's

> white balance (see post <https://groups.google.com/g/ptgui/c/
> oew_0EhgNXw>) and it works. However, I have encountered another issue

> and I think it's related to the new update.
> After exporting a TIFF file, I always open it in GigaPX Tools PRO to
> transform it using the web viewer feature for my website. After
> exporting with 13.4 / 13.5, I get "Input file read error" message:
>

> ighjepth.png
>
> I have tried to export the exact same images with 13.3 and GigaPX Tools
> works fine, as it had before.
> Here are the exported tiffs and raw files if you want to try for
> yourself, perhaps I'm doing something wrong? Perhaps the bug is linked
> to the GFX 100SII?

> Google drive <https://drive.google.com/drive/
> folders/1c6DNX7r0swiJ5S_JogkC_aIP9y04R-53?usp=sharing>

>
> EDIT:
> I was thinking that the issue could be linked to my camera so I tested
> my previous cameras' photos with 13.5. The results are quite strange:
> 5D MarkIV: PTGui Import OK -> GigaPX Tools Bug
> GFX 100S: PTGui Import BUG (screenshot)
> GFX 100SII: PTGui Import OK -> GigaPX Tools Bug
>

> eprohker.png
>
> Seems like the 100S and 100SII might have conflicting data? Doesn't
> explain why the 5D TIFF file is also bugged though... I'm out of ideas!
>
> Sorry for bringing more problems,
> Geoffrey
>

> --
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> groups.google.com/d/msgid/ptgui/9f97df65-3aa1-456c-a853-
> d5549a60dff0n%40googlegroups.com?utm_medium=email&utm_source=footer>.

[Mireille Tempez]

Hello i have also the same problem, in opening raw files .cr3, from canon eos you can test with this file the

 R5MB7803.CR3

cordialement  Mireille Tempez

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[PTGui Support]

Merci Mireille.

It turns out it's not the raw file itself, but PTGui 13.5 on Windows
fails to load raw files from a folder containing non-ASCII characters
(accents or asian scripts).

A fix will be available soon.

Kind regards,

Joost Nieuwenhuijse
www.ptgui.com

On 2/27/26 11:23, Mireille Tempez wrote:
> Hello i have also the same problem, in opening raw files .cr3, from
> canon eos you can test with this file the

> R5MB7803.CR3 <https://drive.google.com/file/
> d/17HzMw6j_4YyDgGnawRyFltjeMUr1jbvX/view?usp=drive_web>

>
> cordialement  Mireille Tempez
>
> Le ven. 27 févr. 2026, 09:41, 'PTGui Support' via PTGui Support

> <pt...@googlegroups.com <mailto:pt...@googlegroups.com>> a écrit :

>
> Hi Geoffrey,
>
> I think the problem in GigaPX Tools is due to the compression of
> PTGui's
> TIFF output. PTGui 13.5 defaults to using ZIP compression for TIFF
> output (previously it used Packbits by default). Perhaps GigaPX Tools
> doesn't support this. See the Settings button next to the file
> format in
> the Create Panorama tab.
>
> The LibRaw input/output error is something different, this looks
> like it
> might be a problem in PTGui. I can't reproduce this though. When I try,
> all your raw files load fine in PTGui 13.5 on Windows. How did you
> trigger the error?
>
> Kind regards,
>
> Joost Nieuwenhuijse

> www.ptgui.com <http://www.ptgui.com>

>
> On 2/26/26 15:34, Geoffrey LORD wrote:
> > Hey,
> >
> > Just tried using the new version to see if it worked with my
> camera's
> > white balance (see post <https://groups.google.com/g/ptgui/c/
> <https://groups.google.com/g/ptgui/c/>
> > oew_0EhgNXw>) and it works. However, I have encountered another
> issue
> > and I think it's related to the new update.
> > After exporting a TIFF file, I always open it in GigaPX Tools PRO to
> > transform it using the web viewer feature for my website. After
> > exporting with 13.4 / 13.5, I get "Input file read error" message:
> >
> > ighjepth.png
> >
> > I have tried to export the exact same images with 13.3 and GigaPX
> Tools
> > works fine, as it had before.
> > Here are the exported tiffs and raw files if you want to try for
> > yourself, perhaps I'm doing something wrong? Perhaps the bug is
> linked
> > to the GFX 100SII?

> > Google drive <https://drive.google.com/drive/ <https://
> drive.google.com/drive/>

> > folders/1c6DNX7r0swiJ5S_JogkC_aIP9y04R-53?usp=sharing>
> >
> > EDIT:
> > I was thinking that the issue could be linked to my camera so I
> tested
> > my previous cameras' photos with 13.5. The results are quite strange:
> > 5D MarkIV: PTGui Import OK -> GigaPX Tools Bug
> > GFX 100S: PTGui Import BUG (screenshot)
> > GFX 100SII: PTGui Import OK -> GigaPX Tools Bug
> >
> > eprohker.png
> >
> > Seems like the 100S and 100SII might have conflicting data? Doesn't
> > explain why the 5D TIFF file is also bugged though... I'm out of
> ideas!
> >
> > Sorry for bringing more problems,
> > Geoffrey
> >
> > --
> > You received this message because you are subscribed to the Google
> > Groups "PTGui Support" group.
> > To unsubscribe from this group and stop receiving emails from it,
> send
> > an email to ptgui+un...@googlegroups.com

> <mailto:ptgui%2Bunsu...@googlegroups.com>
> > <mailto:ptgui+un...@googlegroups.com
> <mailto:ptgui%2Bunsu...@googlegroups.com>>.

> > To view this discussion visit https://groups.google.com/d/msgid/

> <https://groups.google.com/d/msgid/>
> > ptgui/9f97df65-3aa1-456c-a853-d5549a60dff0n%40googlegroups.com
> <http://40googlegroups.com> <https://
> > groups.google.com/d/msgid/ptgui/9f97df65-3aa1-456c-a853- <http://
> groups.google.com/d/msgid/ptgui/9f97df65-3aa1-456c-a853->
> > d5549a60dff0n%40googlegroups.com?
> utm_medium=email&utm_source=footer <http://40googlegroups.com?

> utm_medium=email&utm_source=footer>>.
>
> --
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> <mailto:ptgui%2Bunsu...@googlegroups.com>.

> To view this discussion visit https://groups.google.com/d/msgid/

> ptgui/d98639e5-341c-4ca0-b81c-461e8ab8d63c%40ptgui.com <https://
> groups.google.com/d/msgid/ptgui/d98639e5-341c-4ca0-
> b81c-461e8ab8d63c%40ptgui.com>.

>
> --
> You received this message because you are subscribed to the Google
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> <mailto:ptgui+un...@googlegroups.com>.
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> CAAs9Y2ZtV5HcHymDFNTm%3DdTAwEjjr-gDA4j%3DXwUuTHB16zh5Fw%40mail.gmail.com
> <https://groups.google.com/d/msgid/ptgui/
> CAAs9Y2ZtV5HcHymDFNTm%3DdTAwEjjr-
> gDA4j%3DXwUuTHB16zh5Fw%40mail.gmail.com?utm_medium=email&utm_source=footer>.

[Geoffrey LORD]

"I think the problem in GigaPX Tools is due to the compression of PTGui's
TIFF output. PTGui 13.5 defaults to using ZIP compression for TIFF
output (previously it used Packbits by default). Perhaps GigaPX Tools
doesn't support this. See the Settings button next to the file format in
the Create Panorama tab."

I have always exported my panos with these settings and the TIFFS have always worked with these in GigaPX:
 
Maybe I can test some other combinations? Any recommendation for best quality possible? I haven't done any research on the topic, I've always just chosen no compression..

"It turns out it's not the raw file itself, but PTGui 13.5 on Windows
fails to load raw files from a folder containing non-ASCII characters
(accents or asian scripts)."

Great catch! My file name was this:

I guess the æ is causing issues. Other raws from other files from the same camera work just fine.

Thanks,
Geoffrey

[Geoffrey LORD]

I've tried with 16bits+every compression type+no alpha and 8bits+non,Packbits,ZIP+no alpha.
All give the same result. Let me know if you need me to try something else
Geoffrey 

[PTGui Support]

I forgot to mention, there's another change, PTGui now writes tiled TIFF
files.

I would expect them to support this but perhaps this is not the case?

Kind regards,

Joost Nieuwenhuijse
www.ptgui.com

On 2/27/26 13:03, Geoffrey LORD wrote:
> I've tried with 16bits+every compression type+no alpha and
> 8bits+non,Packbits,ZIP+no alpha.
> All give the same result. Let me know if you need me to try something else
> Geoffrey
>
> Le vendredi 27 février 2026 à 12:47:35 UTC+1, Geoffrey LORD a écrit :
>

> /"I think the problem in GigaPX Tools is due to the compression of

> PTGui's
> TIFF output. PTGui 13.5 defaults to using ZIP compression for TIFF
> output (previously it used Packbits by default). Perhaps GigaPX Tools
> doesn't support this. See the Settings button next to the file format in

> the Create Panorama tab."/

>
> I have always exported my panos with these settings and the TIFFS
> have always worked with these in GigaPX:

> ieugehyrpog$.png
> Maybe I can test some other combinations? Any recommendation for
> best quality possible? I haven't done any research on the topic,
> I've always just chosen no compression..
>

> /"It turns out it's not the raw file itself, but PTGui 13.5 on Windows

> fails to load raw files from a folder containing non-ASCII characters

> (accents or asian scripts)."/

>
> Great catch! My file name was this:

> zopigjzeg.png
> I guess the æ is causing issues. Other raws from other files from
> the same camera work just fine.
>
> Thanks,
> Geoffrey
>
> Le vendredi 27 février 2026 à 12:31:07 UTC+1, PTGui Support a écrit :
>
> Merci Mireille.
>
> It turns out it's not the raw file itself, but PTGui 13.5 on
> Windows
> fails to load raw files from a folder containing non-ASCII
> characters
> (accents or asian scripts).
>
> A fix will be available soon.
>
> Kind regards,
>
> Joost Nieuwenhuijse

> www.ptgui.com <http://www.ptgui.com>

>
> On 2/27/26 11:23, Mireille Tempez wrote:
> > Hello i have also the same problem, in opening raw
> files .cr3, from
> > canon eos you can test with this file the

> > R5MB7803.CR3 <https://drive.google.com/file/ <https://
> drive.google.com/file/>

> > d/17HzMw6j_4YyDgGnawRyFltjeMUr1jbvX/view?usp=drive_web>
> >
> > cordialement  Mireille Tempez
> >
> > Le ven. 27 févr. 2026, 09:41, 'PTGui Support' via PTGui Support
> > <pt...@googlegroups.com <mailto:pt...@googlegroups.com>> a
> écrit :
> >
> > Hi Geoffrey,
> >
> > I think the problem in GigaPX Tools is due to the compression of
> > PTGui's
> > TIFF output. PTGui 13.5 defaults to using ZIP compression for
> TIFF
> > output (previously it used Packbits by default). Perhaps
> GigaPX Tools
> > doesn't support this. See the Settings button next to the file
> > format in
> > the Create Panorama tab.
> >
> > The LibRaw input/output error is something different, this looks
> > like it
> > might be a problem in PTGui. I can't reproduce this though.
> When I try,
> > all your raw files load fine in PTGui 13.5 on Windows. How
> did you
> > trigger the error?
> >
> > Kind regards,
> >
> > Joost Nieuwenhuijse

> > www.ptgui.com <http://www.ptgui.com> <http://www.ptgui.com

> <http://www.ptgui.com>>
> >
> > On 2/26/26 15:34, Geoffrey LORD wrote:
> > > Hey,
> > >
> > > Just tried using the new version to see if it worked with my
> > camera's
> > > white balance (see post <https://groups.google.com/g/ptgui/
> c/ <https://groups.google.com/g/ptgui/c/>

> > <https://groups.google.com/g/ptgui/c/ <https://

> groups.google.com/g/ptgui/c/>>
> > > oew_0EhgNXw>) and it works. However, I have encountered
> another
> > issue
> > > and I think it's related to the new update.
> > > After exporting a TIFF file, I always open it in GigaPX
> Tools PRO to
> > > transform it using the web viewer feature for my website.
> After
> > > exporting with 13.4 / 13.5, I get "Input file read error"
> message:
> > >
> > > ighjepth.png
> > >
> > > I have tried to export the exact same images with 13.3 and
> GigaPX
> > Tools
> > > works fine, as it had before.
> > > Here are the exported tiffs and raw files if you want to
> try for
> > > yourself, perhaps I'm doing something wrong? Perhaps the
> bug is
> > linked
> > > to the GFX 100SII?
> > > Google drive <https://drive.google.com/drive/ <https://

> drive.google.com/drive/> <https://
> > drive.google.com/drive/ <http://drive.google.com/drive/>>

> > <https://groups.google.com/d/msgid/ <https://
> groups.google.com/d/msgid/>>
> > > ptgui/9f97df65-3aa1-456c-a853-
> d5549a60dff0n%40googlegroups.com <http://40googlegroups.com>
> > <http://40googlegroups.com <http://40googlegroups.com>>

> <https://
> > > groups.google.com/d/msgid/ptgui/9f97df65-3aa1-456c-a853-
> <http://groups.google.com/d/msgid/ptgui/9f97df65-3aa1-456c-a853-

> > <http://
> > groups.google.com/d/msgid/ptgui/9f97df65-3aa1-456c-a853-
> <http://groups.google.com/d/msgid/ptgui/9f97df65-3aa1-456c-a853->>
> > > d5549a60dff0n%40googlegroups.com <http://40googlegroups.com>?
> > utm_medium=email&utm_source=footer <http://40googlegroups.com
> <http://40googlegroups.com>?

> > utm_medium=email&utm_source=footer>>.
> >
> > --
> > You received this message because you are subscribed to the
> Google
> > Groups "PTGui Support" group.
> > To unsubscribe from this group and stop receiving emails from
> it,
> > send an email to ptgui+un...@googlegroups.com
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> > To view this discussion visit https://groups.google.com/d/

> msgid/ <https://groups.google.com/d/msgid/>
> > ptgui/d98639e5-341c-4ca0-b81c-461e8ab8d63c%40ptgui.com
> <http://40ptgui.com> <https://
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> groups.google.com/d/msgid/ptgui/d98639e5-341c-4ca0->
> > b81c-461e8ab8d63c%40ptgui.com <http://40ptgui.com>>.

> >
> > --
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> msgid/ptgui/ <https://groups.google.com/d/msgid/ptgui/>
> > CAAs9Y2ZtV5HcHymDFNTm%3DdTAwEjjr-
> gDA4j%3DXwUuTHB16zh5Fw%40mail.gmail.com <http://40mail.gmail.com>
> > <https://groups.google.com/d/msgid/ptgui/ <https://
> groups.google.com/d/msgid/ptgui/>
> > CAAs9Y2ZtV5HcHymDFNTm%3DdTAwEjjr-
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> utm_medium=email&utm_source=footer <http://40mail.gmail.com?

> utm_medium=email&utm_source=footer>>.
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> ptgui/575a6164-1f8e-4201-892d-1abe2e93d629n%40googlegroups.com?
> utm_medium=email&utm_source=footer>.

[Geoffrey LORD]

Hmm I see. I'll try to contact them and report back. If they are unable to support it, am I just doomed then? Having to choose between unsupported camera or unsupported file 😂
Geoffrey

[PTGui Support]

For the time being you would be doomed..

Yes please contact them, I can imagine they might want to support tiled
tiffs anyway. If it turns out to be a different issue please let me know.

Kind regards,

Joost Nieuwenhuijse
www.ptgui.com

On 2/27/26 17:36, Geoffrey LORD wrote:
> Hmm I see. I'll try to contact them and report back. If they are unable
> to support it, am I just doomed then? Having to choose between
> unsupported camera or unsupported file 😂
> Geoffrey
>
> Le vendredi 27 février 2026 à 14:44:50 UTC+1, PTGui Support a écrit :
>
> I forgot to mention, there's another change, PTGui now writes tiled
> TIFF
> files.
>
> I would expect them to support this but perhaps this is not the case?
>
> Kind regards,
>
> Joost Nieuwenhuijse

> www.ptgui.com <http://www.ptgui.com>

> > www.ptgui.com <http://www.ptgui.com> <http://www.ptgui.com
> <http://www.ptgui.com>>
> >

> > On 2/27/26 11:23, Mireille Tempez wrote:
> > > Hello i have also the same problem, in opening raw
> > files .cr3, from
> > > canon eos you can test with this file the
> > > R5MB7803.CR3 <https://drive.google.com/file/ <https://

> drive.google.com/file/> <https://
> > drive.google.com/file/ <http://drive.google.com/file/>>

> <http://www.ptgui.com>> <http://www.ptgui.com <http://www.ptgui.com>

> > <http://www.ptgui.com <http://www.ptgui.com>>>
> > >
> > > On 2/26/26 15:34, Geoffrey LORD wrote:
> > > > Hey,
> > > >
> > > > Just tried using the new version to see if it worked with my
> > > camera's
> > > > white balance (see post <https://groups.google.com/g/ptgui/
> <https://groups.google.com/g/ptgui/>

> > c/ <https://groups.google.com/g/ptgui/c/ <https://

> groups.google.com/g/ptgui/c/>>
> > > <https://groups.google.com/g/ptgui/c/ <https://
> groups.google.com/g/ptgui/c/> <https://

> > groups.google.com/g/ptgui/c/ <http://groups.google.com/g/ptgui/c/>>>

> > > > oew_0EhgNXw>) and it works. However, I have encountered
> > another
> > > issue
> > > > and I think it's related to the new update.
> > > > After exporting a TIFF file, I always open it in GigaPX
> > Tools PRO to
> > > > transform it using the web viewer feature for my website.
> > After
> > > > exporting with 13.4 / 13.5, I get "Input file read error"
> > message:
> > > >
> > > > ighjepth.png
> > > >
> > > > I have tried to export the exact same images with 13.3 and
> > GigaPX
> > > Tools
> > > > works fine, as it had before.
> > > > Here are the exported tiffs and raw files if you want to
> > try for
> > > > yourself, perhaps I'm doing something wrong? Perhaps the
> > bug is
> > > linked
> > > > to the GFX 100SII?
> > > > Google drive <https://drive.google.com/drive/ <https://
> drive.google.com/drive/> <https://

> > drive.google.com/drive/ <http://drive.google.com/drive/>> <https://
> > > drive.google.com/drive/ <http://drive.google.com/drive/>
> <http://drive.google.com/drive/ <http://drive.google.com/drive/>>>

> > msgid/ <https://groups.google.com/d/msgid/ <https://

> groups.google.com/d/msgid/>>
> > > <https://groups.google.com/d/msgid/ <https://groups.google.com/
> d/msgid/> <https://

> > groups.google.com/d/msgid/ <http://groups.google.com/d/msgid/>>>

> > > > ptgui/9f97df65-3aa1-456c-a853-
> > d5549a60dff0n%40googlegroups.com <http://40googlegroups.com>
> <http://40googlegroups.com <http://40googlegroups.com>>
> > > <http://40googlegroups.com <http://40googlegroups.com>
> <http://40googlegroups.com <http://40googlegroups.com>>>
> > <https://
> > > > groups.google.com/d/msgid/ptgui/9f97df65-3aa1-456c-a853-
> <http://groups.google.com/d/msgid/ptgui/9f97df65-3aa1-456c-a853->
> > <http://groups.google.com/d/msgid/ptgui/9f97df65-3aa1-456c-a853-
> <http://groups.google.com/d/msgid/ptgui/9f97df65-3aa1-456c-a853->
> > > <http://
> > > groups.google.com/d/msgid/ptgui/9f97df65-3aa1-456c-a853-
> <http://groups.google.com/d/msgid/ptgui/9f97df65-3aa1-456c-a853->

> > <http://groups.google.com/d/msgid/ptgui/9f97df65-3aa1-456c-a853-

> <http://groups.google.com/d/msgid/ptgui/9f97df65-3aa1-456c-a853->>>
> > > > d5549a60dff0n%40googlegroups.com <http://40googlegroups.com>

> <http://40googlegroups.com <http://40googlegroups.com>>?

> > > utm_medium=email&utm_source=footer <http://40googlegroups.com
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[Mireille Tempez]

Tanks for 13.6 release, it's ok for large and/ or names with spécial caracters.

cordialement  Mireille Tempez

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[Christoph Graf]

Hi

I also have issues with TIFF output from PTGUI 13.5:

I generated a TIFF (16Bit, no comp, no alpha) with version 13.3, TIFF is readable by SILKYPIX11.

Exact the same project generated the same TIFF with version 13.5 : TIFF is unreadable by SILKYPIX11

This is reproducable with different projects/source pics.

There MUST be a change between13.3 and 13.5!

Regards 

Chis

[PTGui Support]

Hi Christoph,

Yes there was a change in the TIFF output, PTGui now outputs tiled TIFF
but there still seem to be applications which cannot read this. So it
will be reverted in the next update.

Kind regards,

Joost Nieuwenhuijse
www.ptgui.com

On 3/1/26 13:31, Christoph Graf wrote:
> Hi
>
> I also have issues with TIFF output from PTGUI 13.5:
>
> I generated a TIFF (16Bit, no comp, no alpha) with version 13.3, TIFF is
> readable by SILKYPIX11.
> Exact the same project generated the same TIFF with version 13.5 : TIFF
> is unreadable by SILKYPIX11
>
> This is reproducable with different projects/source pics.
>
> There MUST be a change between13.3 and 13.5!
>
> Regards
> Chis
>
> Geoffrey LORD schrieb am Donnerstag, 26. Februar 2026 um 15:34:49 UTC+1:
>
> Hey,
>
> Just tried using the new version to see if it worked with my

> camera's white balance (see post <https://groups.google.com/g/ptgui/

> c/oew_0EhgNXw>) and it works. However, I have encountered another

> issue and I think it's related to the new update.
> After exporting a TIFF file, I always open it in GigaPX Tools PRO to
> transform it using the web viewer feature for my website. After
> exporting with 13.4 / 13.5, I get "Input file read error" message:
>

> ighjepth.png
>
> I have tried to export the exact same images with 13.3 and GigaPX
> Tools works fine, as it had before.
> Here are the exported tiffs and raw files if you want to try for
> yourself, perhaps I'm doing something wrong? Perhaps the bug is
> linked to the GFX 100SII?

> Google drive <https://drive.google.com/drive/
> folders/1c6DNX7r0swiJ5S_JogkC_aIP9y04R-53?usp=sharing>

>
> EDIT:
> I was thinking that the issue could be linked to my camera so I
> tested my previous cameras' photos with 13.5. The results are quite
> strange:
> 5D MarkIV: PTGui Import OK -> GigaPX Tools Bug
> GFX 100S: PTGui Import BUG (screenshot)
> GFX 100SII: PTGui Import OK -> GigaPX Tools Bug
>

> eprohker.png
>
> Seems like the 100S and 100SII might have conflicting data? Doesn't
> explain why the 5D TIFF file is also bugged though... I'm out of ideas!
>
> Sorry for bringing more problems,
> Geoffrey
>

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> e4a496cd-2ecb-45d0-8e68-0673223b055an%40googlegroups.com?
> utm_medium=email&utm_source=footer>.

[Christoph Graf]

Thanks, I guess this was undocumeted...(?)

Have a nice time

Chris

[Gunter Hillmann]

Hallo

Habe heute auf Version 13.6. gewechselt und es funktioniert auch bei mir nicht. Zurück auf 13.3. ist alles wieder gut.

[Geoffrey LORD]

Hi Joost,

I have contacted Mike, the person behind GigaPX Tools. I have explained my situation to him and he has agreed that I share what he answered with you. I will just copy his answers as to not distort them:

I can confirm that GigaPX Tools does not currently support the "Tiled TIFF" format. The latest PTGui version changed the way data is organized inside the file: instead of saving the image in horizontal rows (strips), it now saves it in a grid of squares (tiles). My software's engine is currently optimized for the traditional "strip" format to ensure maximum processing speed.
I will investigate a potential update to support this new layout. In the meantime, you could try to convert your PTGui exports back to a "traditional" TIFF using one of these free tools:

Option 1: ImageMagick (Recommended for most cases) Use this command in your terminal/command prompt: magick input_tiled.tif -compress lzw -define tiff:tile-geometry= output_standard.tif
Note: If the file is very large and the process fails or slows down your computer, use this version to limit memory usage: magick input_tiled.tif -limit memory 2GiB -limit map 4GiB -compress lzw -define tiff:tile-geometry= output_standard.tif

Option 2: tiffcp (Fastest for extremely large files) If you have the libtiff tools installed, this is the most efficient method as it doesn't re-encode the image: tiffcp -s input_tiled.tif output_standard.tif
Please let me know if the converted file works with GigaPX Tools. This feedback is essential for me to plan the architectural changes needed for the next update.

To which I answered that I had actually just started testing ImageMagick thanks to Gemini AI recommendation and found command prompts that gave me some working results by essentially stripping metadata (I think). Here was part of my answer:

Anyways, after Gemini stopped hallucinating and forgetting context, it gave me these prompts that were the only ones that worked:
    magick "DSCF2745 Panorama testing bug 135 WITH MASK.tif" -alpha off -interlace none -define tiff:tile-geometry=0x0 -compress none "GigaPX_Final_Test.tif" ////////// followed by this prompt as the first one didn't work on its own -> ///////// magick "GigaPX_Final_Test.tif" +profile "*" "Clean_Image.tif"
or
    magick input.tif -define tiff:big-tiff=yes output.tif

Now I've tested your suggestions:
Option 1: I'm still getting input file read error. You can check the multiple prompts that Gemini gave me that didn't work, perhaps that can help.
Option 2: Perhaps I missed it while searching but I don't think libtiff tools works on Windows? The file I've managed to download feels more like a Linux thing, which I don't have installed and can't install on this machine. I definitely wouldn't mind the fastest computing solution possible; the TIFF I was trying the convert is like 135GB... 

His last response so far was: 

Regarding the points you raised:

Tiled TIFF Support: I have identified a potential solution to integrate this format into GigaPX Tools more efficiently. However, it will take some time as I am currently committed to another project. Native support is definitely on the roadmap.
16-bit to 8-bit Conversion: This feature was recently added and is still experimental. Currently, it performs a basic bit-truncation to prioritize processing speed on massive files. I am considering adding a gamma curve in a future update to improve visual contrast during this conversion.
Color Profiles (ICC): GigaPX Tools does not currently manage color spaces. Even if implemented, embedding complex ICC profiles into thousands of small JPG tiles would significantly increase the data load, negatively impacting the zoom and panning performance in OpenSeadragon.
The Recommended Workflow (Quality): Since the final output for the web is always 8-bit JPG, I strongly recommend exporting from PTGui directly as 8-bit sRGB. This allows PTGui to handle the high-quality color/gamma conversion. Your files will look correct in any browser, and GigaPX will process them much more efficiently.
The Tiled vs. Strip issue: Since PTGui 13.4 now uses the Tiled format by default, a conversion to "Standard/Strip" TIFF is currently necessary for GigaPX Tools. However, ImageMagick often fails with 100GB+ files because it tries to cache the image in ways that Windows can't handle. While tiffcp is a faster alternative for this conversion, it requires installing third-party software environments on Windows, which might be inconvenient.

I am working towards making GigaPX Tools compatible with these new PTGui exports so that these external conversion steps will no longer be required.


Hope this info helps, 
Geoffrey

[Geoffrey LORD]

" Yes there was a change in the TIFF output, PTGui now outputs tiled TIFF
but there still seem to be applications which cannot read this. So it
will be reverted in the next update."

Perhaps you could add both options, tiled and stripped to the file format dropdown menu? Just like JPEG VS JPEG2000 and PSD VS PSB?
 
 

I would feel bad if it turns out that a majority of people actually benefited from the tiled format and that the few that didn't were the only ones to complain (like me).
I think that my images are too large to be able to be used without web viewer conversion, but I guess anyone doing small panos or 360 photos could use this new file type? 

Thanks again, 
Geoffrey

[PTGui Support]

I'll find a solution. There's probably other software out there which
doesn't support tiled formats so this was a misjudgement on my part.

Kind regards,

Joost Nieuwenhuijse
www.ptgui.com

On 3/2/26 19:38, Geoffrey LORD wrote:
> /" Yes there was a change in the TIFF output, PTGui now outputs tiled TIFF

> but there still seem to be applications which cannot read this. So it
> will be reverted in the next update."

> /

> Perhaps you could add both options, tiled and stripped to the file
> format dropdown menu? Just like JPEG VS JPEG2000 and PSD VS PSB?
>

> zoigeh.png
>
> I would feel bad if it turns out that a majority of people actually
> benefited from the tiled format and that the few that didn't were the
> only ones to complain (like me).
> I think that my images are too large to be able to be used without web
> viewer conversion, but I guess anyone doing small panos or 360 photos
> could use this new file type?
>
> Thanks again,
> Geoffrey
> Le lundi 2 mars 2026 à 19:27:43 UTC+1, Geoffrey LORD a écrit :
>
> Hi Joost,
>
> I have contacted Mike, the person behind GigaPX Tools. I have
> explained my situation to him and he has agreed that I share what he
> answered with you. I will just copy his answers as to not distort them:
>

> /I can confirm that GigaPX Tools does not currently support the

> "Tiled TIFF" format. The latest PTGui version changed the way data
> is organized inside the file: instead of saving the image in
> horizontal rows (strips), it now saves it in a grid of squares
> (tiles). My software's engine is currently optimized for the
> traditional "strip" format to ensure maximum processing speed.
> I will investigate a potential update to support this new layout. In
> the meantime, you could try to convert your PTGui exports back to a
> "traditional" TIFF using one of these free tools:
>

> *Option 1: ImageMagick *(Recommended for most cases) Use this

> command in your terminal/command prompt: magick input_tiled.tif -
> compress lzw -define tiff:tile-geometry= output_standard.tif
> Note: If the file is very large and the process fails or slows down
> your computer, use this version to limit memory usage: magick
> input_tiled.tif -limit memory 2GiB -limit map 4GiB -compress lzw -
> define tiff:tile-geometry= output_standard.tif
>

> *Option 2: tiffcp* (Fastest for extremely large files) If you have

> the libtiff tools installed, this is the most efficient method as it
> doesn't re-encode the image: tiffcp -s input_tiled.tif
> output_standard.tif
> Please let me know if the converted file works with GigaPX Tools.
> This feedback is essential for me to plan the architectural changes

> needed for the next update./

>
> To which I answered that I had actually just started testing
> ImageMagick thanks to Gemini AI recommendation and found command
> prompts that gave me some working results by essentially stripping
> metadata (I think). Here was part of my answer:
>

> /Anyways, after Gemini stopped hallucinating and forgetting context,

> it gave me these prompts that were the only ones that worked:
>     magick "DSCF2745 Panorama testing bug 135 WITH MASK.tif" -alpha
> off -interlace none -define tiff:tile-geometry=0x0 -compress none
> "GigaPX_Final_Test.tif" ////////// followed by this prompt as the
> first one didn't work on its own -> ///////// magick
> "GigaPX_Final_Test.tif" +profile "*" "Clean_Image.tif"
> or
>     magick input.tif -define tiff:big-tiff=yes output.tif
>
> Now I've tested your suggestions:
> Option 1: I'm still getting input file read error. You can check the
> multiple prompts that Gemini gave me that didn't work, perhaps that
> can help.
> Option 2: Perhaps I missed it while searching but I don't think
> libtiff tools works on Windows? The file I've managed to download
> feels more like a Linux thing, which I don't have installed and
> can't install on this machine. I definitely wouldn't mind the
> fastest computing solution possible; the TIFF I was trying the
> convert is like 135GB...
>

> /His last response so far was:

>
> Regarding the points you raised:
>

> /*Tiled TIFF Support:* I have identified a potential solution to

> integrate this format into GigaPX Tools more efficiently. However,
> it will take some time as I am currently committed to another
> project. Native support is definitely on the roadmap.

> *16-bit to 8-bit Conversion:* This feature was recently added and is

> still experimental. Currently, it performs a basic bit-truncation to
> prioritize processing speed on massive files. I am considering
> adding a gamma curve in a future update to improve visual contrast
> during this conversion.

> *Color Profiles (ICC): *GigaPX Tools does not currently manage color

> spaces. Even if implemented, embedding complex ICC profiles into
> thousands of small JPG tiles would significantly increase the data
> load, negatively impacting the zoom and panning performance in
> OpenSeadragon.

> *The Recommended Workflow (Quality):* Since the final output for the

> web is always 8-bit JPG, I strongly recommend exporting from PTGui
> directly as 8-bit sRGB. This allows PTGui to handle the high-quality
> color/gamma conversion. Your files will look correct in any browser,
> and GigaPX will process them much more efficiently.

> *The Tiled vs. Strip issue:* Since PTGui 13.4 now uses the Tiled

> format by default, a conversion to "Standard/Strip" TIFF is
> currently necessary for GigaPX Tools. However, ImageMagick often
> fails with 100GB+ files because it tries to cache the image in ways
> that Windows can't handle. While tiffcp is a faster alternative for
> this conversion, it requires installing third-party software
> environments on Windows, which might be inconvenient.
>
> I am working towards making GigaPX Tools compatible with these new
> PTGui exports so that these external conversion steps will no longer
> be required.

> /

>
> Hope this info helps,
> Geoffrey
> Le lundi 2 mars 2026 à 16:46:42 UTC+1, Gunter Hillmann a écrit :
>
> Hallo
>
> Habe heute auf Version 13.6. gewechselt und es funktioniert auch
> bei mir nicht. Zurück auf 13.3. ist alles wieder gut.
>
> Christoph Graf schrieb am Montag, 2. März 2026 um 11:37:45 UTC+1:
>
> Thanks, I guess this was undocumeted...(?)
>
> Have a nice time
>
> Chris
>
> PTGui Support schrieb am Montag, 2. März 2026 um 08:24:28 UTC+1:
>
> Hi Christoph,
>
> Yes there was a change in the TIFF output, PTGui now
> outputs tiled TIFF
> but there still seem to be applications which cannot
> read this. So it
> will be reverted in the next update.
>
> Kind regards,
>
> Joost Nieuwenhuijse

> www.ptgui.com <http://www.ptgui.com>

>
> On 3/1/26 13:31, Christoph Graf wrote:
> > Hi
> >
> > I also have issues with TIFF output from PTGUI 13.5:
> >
> > I generated a TIFF (16Bit, no comp, no alpha) with
> version 13.3, TIFF is
> > readable by SILKYPIX11.
> > Exact the same project generated the same TIFF with
> version 13.5 : TIFF
> > is unreadable by SILKYPIX11
> >
> > This is reproducable with different projects/source
> pics.
> >
> > There MUST be a change between13.3 and 13.5!
> >
> > Regards
> > Chis
> >
> > Geoffrey LORD schrieb am Donnerstag, 26. Februar 2026
> um 15:34:49 UTC+1:
> >
> > Hey,
> >
> > Just tried using the new version to see if it worked
> with my
> > camera's white balance (see post <https://

> groups.google.com/g/ptgui/ <https://groups.google.com/g/
> ptgui/>

> > To view this discussion visit https://
> groups.google.com/d/msgid/ptgui/ <https://
> groups.google.com/d/msgid/ptgui/>
> >
> e4a496cd-2ecb-45d0-8e68-0673223b055an%40googlegroups.com
> <http://40googlegroups.com> <https://
> > groups.google.com/d/msgid/ptgui/ <http://
> groups.google.com/d/msgid/ptgui/>
> >
> e4a496cd-2ecb-45d0-8e68-0673223b055an%40googlegroups.com

> <http://40googlegroups.com>?
> > utm_medium=email&utm_source=footer>.
>

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