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jrsch...@gmail.com
Dec 30, 2025, 3:48:36 PM12/30/25
to PTGui Support
I was just looking at the resultant TIF from defishing an image. In Lightroom, the metadata of the tif showed no lens information and the focal length was changed from 8mm to ‘11.821mm’. Other settings were lost missing…which I don’t care about, but the lens name I do, so I may search on it in future. Focal length change was just strange (to me)
PTGui Support
Dec 31, 2025, 3:33:53 AM12/31/25
to pt...@googlegroups.com
Hi,
PTGui makes sure that the metadata of the panorama matches the actual
projection. So in this case your panorama looks like an image taken with
an 11.8mm lens.
Kind regards,
Joost Nieuwenhuijse
www.ptgui.com
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PTGui makes sure that the metadata of the panorama matches the actual
projection. So in this case your panorama looks like an image taken with
an 11.8mm lens.
Kind regards,
Joost Nieuwenhuijse
www.ptgui.com
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John Schwaller
Dec 31, 2025, 8:16:03 AM12/31/25
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Ok….i can understand that. (Though, in the image I used, compression was used so included a lot more than a 11.8mm lens would).
However, why is the lens name not kept in the metadata?
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PTGui Support
Jan 1, 2026, 10:23:16 AMJan 1
to pt...@googlegroups.com
Lens data is encoded in the MakerNotes exif field. This is in a
different format for each manufacturer. PTGui can read some of this but
it cannot write it.
Regardless, the same reasoning applies: suppose your lens is a fisheye
lens and the panoraama is rectilinear, the metadata would not be correct.
I understand there are different ways to look at this. But because PTGui
needs to be able to trust the metadata for automatic stitching, it will
take care to write only correct metadata.
> > <mailto:ptgui+un...@googlegroups.com
> <mailto:ptgui%2Bunsu...@googlegroups.com>>.
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different format for each manufacturer. PTGui can read some of this but
it cannot write it.
Regardless, the same reasoning applies: suppose your lens is a fisheye
lens and the panoraama is rectilinear, the metadata would not be correct.
I understand there are different ways to look at this. But because PTGui
needs to be able to trust the metadata for automatic stitching, it will
take care to write only correct metadata.
On 12/31/25 14:15, John Schwaller wrote:
> Ok….i can understand that. (Though, in the image I used, compression was
> used so included a lot more than a 11.8mm lens would).
>
> However, why is the lens name not kept in the metadata?
>
> On Wed, Dec 31, 2025 at 3:33 AM 'PTGui Support' via PTGui Support
> <pt...@googlegroups.com <mailto:pt...@googlegroups.com>> wrote:
>
> Hi,
>
> PTGui makes sure that the metadata of the panorama matches the actual
> projection. So in this case your panorama looks like an image taken
> with
> an 11.8mm lens.
>
> Kind regards,
>
> Joost Nieuwenhuijse
> www.ptgui.com <http://www.ptgui.com>
> Ok….i can understand that. (Though, in the image I used, compression was
> used so included a lot more than a 11.8mm lens would).
>
> However, why is the lens name not kept in the metadata?
>
> On Wed, Dec 31, 2025 at 3:33 AM 'PTGui Support' via PTGui Support
> <pt...@googlegroups.com <mailto:pt...@googlegroups.com>> wrote:
>
> Hi,
>
> PTGui makes sure that the metadata of the panorama matches the actual
> projection. So in this case your panorama looks like an image taken
> with
> an 11.8mm lens.
>
> Kind regards,
>
> Joost Nieuwenhuijse
>
> On 12/30/25 21:48, jrsch...@gmail.com <mailto:jrsch...@gmail.com> wrote:
> > I was just looking at the resultant TIF from defishing an image. In
> > Lightroom, the metadata of the tif showed no lens information and
> the
> > focal length was changed from 8mm to ‘11.821mm’. Other settings
> were
> > lost missing…which I don’t care about, but the lens name I do, so
> I may
> > search on it in future. Focal length change was just strange (to me)
> >
> > --
> > 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>
> On 12/30/25 21:48, jrsch...@gmail.com <mailto:jrsch...@gmail.com> wrote:
> > I was just looking at the resultant TIF from defishing an image. In
> > Lightroom, the metadata of the tif showed no lens information and
> the
> > focal length was changed from 8mm to ‘11.821mm’. Other settings
> were
> > lost missing…which I don’t care about, but the lens name I do, so
> I may
> > search on it in future. Focal length change was just strange (to me)
> >
> > --
> > You received this message because you are subscribed to the Google
> > Groups "PTGui Support" group.
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> send
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> > <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/>
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jrsch...@gmail.com
Jan 1, 2026, 1:26:22 PMJan 1
to PTGui Support
I am no expert, but software such as rawdigger, for raw, and others, for tif, seem to indicate that the camera model name and lens name
Seem to be in the EXIF data (as well as makerNotes).
Seem to be in the EXIF data (as well as makerNotes).
You do include the camera info in the tifs you create.
I disagree that showing a rectilinear projection with the actual lens name (fisheye) is confusing. I think it is valuable. You do name the image file as ‘Panorama’. You do change the focal length, which I find acceptable. However, not being able to search on the lens name…and having it blank…is confusing.
PTGui Support
Jan 1, 2026, 4:53:31 PMJan 1
to pt...@googlegroups.com
You're right, a lens model field was added to Exif version 2.3.
Historically this data was only in the makernotes.
I'll add this to the wish list.
> msgid/>>
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> YQ%40mail.gmail.com <http://40mail.gmail.com>
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> be69e22d90b8n%40googlegroups.com?utm_medium=email&utm_source=footer>.
Historically this data was only in the makernotes.
I'll add this to the wish list.
On 1/1/26 19:26, jrsch...@gmail.com wrote:
> I am no expert, but software such as rawdigger, for raw, and others, for
> tif, seem to indicate that the camera model name and lens name
> Seem to be in the EXIF data (as well as makerNotes).
>
> You do include the camera info in the tifs you create.
>
> I disagree that showing a rectilinear projection with the actual lens
> name (fisheye) is confusing. I think it is valuable. You do name the
> image file as ‘Panorama’. You do change the focal length, which I find
> acceptable. However, not being able to search on the lens name…and
> having it blank…is confusing.
> On Thursday, January 1, 2026 at 10:23:16 AM UTC-5 PTGui Support wrote:
>
> Lens data is encoded in the MakerNotes exif field. This is in a
> different format for each manufacturer. PTGui can read some of this but
> it cannot write it.
>
> Regardless, the same reasoning applies: suppose your lens is a fisheye
> lens and the panoraama is rectilinear, the metadata would not be
> correct.
>
> I understand there are different ways to look at this. But because
> PTGui
> needs to be able to trust the metadata for automatic stitching, it will
> take care to write only correct metadata.
>
> Kind regards,
>
> Joost Nieuwenhuijse
> www.ptgui.com <http://www.ptgui.com>
> I am no expert, but software such as rawdigger, for raw, and others, for
> tif, seem to indicate that the camera model name and lens name
> Seem to be in the EXIF data (as well as makerNotes).
>
> You do include the camera info in the tifs you create.
>
> I disagree that showing a rectilinear projection with the actual lens
> name (fisheye) is confusing. I think it is valuable. You do name the
> image file as ‘Panorama’. You do change the focal length, which I find
> acceptable. However, not being able to search on the lens name…and
> having it blank…is confusing.
> On Thursday, January 1, 2026 at 10:23:16 AM UTC-5 PTGui Support wrote:
>
> Lens data is encoded in the MakerNotes exif field. This is in a
> different format for each manufacturer. PTGui can read some of this but
> it cannot write it.
>
> Regardless, the same reasoning applies: suppose your lens is a fisheye
> lens and the panoraama is rectilinear, the metadata would not be
> correct.
>
> I understand there are different ways to look at this. But because
> PTGui
> needs to be able to trust the metadata for automatic stitching, it will
> take care to write only correct metadata.
>
> Kind regards,
>
> Joost Nieuwenhuijse
>
> On 12/31/25 14:15, John Schwaller wrote:
> > Ok….i can understand that. (Though, in the image I used,
> compression was
> > used so included a lot more than a 11.8mm lens would).
> >
> > However, why is the lens name not kept in the metadata?
> >
> > On Wed, Dec 31, 2025 at 3:33 AM 'PTGui Support' via PTGui Support
> > <pt...@googlegroups.com <mailto:pt...@googlegroups.com>> wrote:
> >
> > Hi,
> >
> > PTGui makes sure that the metadata of the panorama matches the
> actual
> > projection. So in this case your panorama looks like an image taken
> > with
> > an 11.8mm lens.
> >
> > Kind regards,
> >
> > Joost Nieuwenhuijse
> > www.ptgui.com <http://www.ptgui.com> <http://www.ptgui.com
> On 12/31/25 14:15, John Schwaller wrote:
> > Ok….i can understand that. (Though, in the image I used,
> compression was
> > used so included a lot more than a 11.8mm lens would).
> >
> > However, why is the lens name not kept in the metadata?
> >
> > On Wed, Dec 31, 2025 at 3:33 AM 'PTGui Support' via PTGui Support
> > <pt...@googlegroups.com <mailto:pt...@googlegroups.com>> wrote:
> >
> > Hi,
> >
> > PTGui makes sure that the metadata of the panorama matches the
> actual
> > projection. So in this case your panorama looks like an image taken
> > with
> > an 11.8mm lens.
> >
> > Kind regards,
> >
> > Joost Nieuwenhuijse
> <http://www.ptgui.com>>
> >
> > On 12/30/25 21:48, jrsch...@gmail.com <mailto:jrsch...@gmail.com>
> wrote:
> > > I was just looking at the resultant TIF from defishing an
> image. In
> > > Lightroom, the metadata of the tif showed no lens information and
> > the
> > > focal length was changed from 8mm to ‘11.821mm’. Other settings
> > were
> > > lost missing…which I don’t care about, but the lens name I do, so
> > I may
> > > search on it in future. Focal length change was just strange
> (to me)
> > >
> > > --
> > > You received this message because you are subscribed to the Google
> > > Groups "PTGui Support" group.
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> > send
> > > an email to ptgui+un...@googlegroups.com
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> > <mailto:ptgui%2Bunsu...@googlegroups.com>>.
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> msgid/ <https://groups.google.com/d/msgid/>
> > <https://groups.google.com/d/msgid/ <https://groups.google.com/d/
> >
> > On 12/30/25 21:48, jrsch...@gmail.com <mailto:jrsch...@gmail.com>
> wrote:
> > > I was just looking at the resultant TIF from defishing an
> image. In
> > > Lightroom, the metadata of the tif showed no lens information and
> > the
> > > focal length was changed from 8mm to ‘11.821mm’. Other settings
> > were
> > > lost missing…which I don’t care about, but the lens name I do, so
> > I may
> > > search on it in future. Focal length change was just strange
> (to me)
> > >
> > > --
> > > You received this message because you are subscribed to the Google
> > > Groups "PTGui Support" group.
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