Problem reading RAW-files from Canon EOS 5D Mark III

[Henrik Lund]

I have used the PTGui Pro 9.1.3 with my Canon EOS 5D Mark II and 1D
Mark IV with great success.
Today when I first time tried to open files produced by the 5D Mark
III, they showed all an purple/pink layer on each image in the
software! What to do?
Cannot the program read RAW-files produced by the 5D Mark III?

What are my options to make panoramas with the software now?

[Erik Krause]

Use a descent raw converter and convert to 16 bit TIFF. PTGui uses dcraw
as raw converter, which is very basic to say the least. There is no
advantage shooting raw, if you use dcraw to convert to viewable images.

It seems as if dcraw not yet supports the 5D III. It isn't listed on
http://www.cybercom.net/~dcoffin/dcraw/

Once it does, you can place a dcraw binary in the dcraw subfolder of the
PTGui program folder to get direct Mark III support.

--
Erik Krause
http://www.erik-krause.de

[Kevin Wilton]

Go to the Adobe site and download the latest DNG converter to strip out the
proprietary information and then treat those exactly as you did before. No
need to go to TIFF.

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[PTGui Support]

Hi Henrik,

As Erik said the Mk III is currently not supported by dcraw, the raw
converter in PTGui. You will indeed get purple colored images.

Use a dedicated RAW converter instead and save the converted RAW files
as 16 bit TIFF images. This preserves the image quality and full dynamic
range of the source images. Be sure to convert all source images in a
panorama using the same settings, otherwise color or brightness
differences may remain visible in the panorama.

Joost

[Henrik Lund]

Thank you!

I did it yesterday, and it worked perfectly!

Thank you all for the feedback!

Henrik Lund, ProLK
Skolvägen 2
FIN-07800 LAPPTRÄSK henri...@lundfoto.com www.lundfoto.com

[Erik Krause]

Am 10.05.2012 00:11, schrieb Kevin Wilton:
> Go to the Adobe site and download the latest DNG converter to strip out the
> proprietary information and then treat those exactly as you did before. No
> need to go to TIFF.

Why go to DNG and then still have no ability to correct chromatic
aberration, white balance, exposure and dynamic range? Raw to DNG
conversion costs extra time and disk space and raw loading in PTGui is
far slower than TIFF loading. And there is no quality improvement
compared to jpeg.

[Nitroman]

Actually ... I'm getting the same strange colour blend problem with my
Canon 5D2 since I upgraded PTGui. See my post :

http://groups.google.com/group/ptgui/browse_thread/thread/58f287edd3bb30cf

Is this a problem that's developed since the PTGui software update as
never used to have it ...

Thanks

[Kevin Wilton]

E

Are we talking about the same Adobe DNG converter that can import your RAW
files direct from your card as DNGs before you do anything with them, such
as import them and then convert them to TIFFs?

And when you convert these to TIFF, are you doing it individually or in
batches. You must remember that a RAW and a DNG are not images, they are
data files that do not produce an image until one is exported. What you see
in Lightroom or ACR is only a PREVIEW of what that output will be when you
finally export it as an image. Therefore, the DNG file retains much, much
more information than any sized TIFF, 8 or 16 bit, Adobe RGB or sRGB, even
ProPhoto RGB.

You just treat your DNG file as you would your RAW, you can correct any
aberration you like, white balance too, recovery, fill, contrast just as you
would with any RAW because it still is a RAW file, just without the 'extra'
manufacturer's 'stuff'.

K

-----Original Message-----
From: pt...@googlegroups.com [mailto:pt...@googlegroups.com] On Behalf Of
Erik Krause
Sent: Friday, 11 May 2012 4:06 AM
To: pt...@googlegroups.com
Subject: [PTGui] Re: Problem reading RAW-files from Canon EOS 5D Mark III

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[Erik Krause]

Am 11.05.2012 10:16, schrieb Kevin Wilton:

> Are we talking about the same Adobe DNG converter that can import your RAW
> files direct from your card as DNGs before you do anything with them, such
> as import them and then convert them to TIFFs?

Yes, I used it when my 5DII was new and my photoshop was too old to read
the raws directly.

> And when you convert these to TIFF, are you doing it individually or in
> batches.

I don't use DNG converter anymore, since I discovered how to use CA
correction in DPP for non-Canon lenses. I convert directly to 16 bit
TIFF. I always convert the images for one panorama with identical
settings in a batch, yes.

> You must remember that a RAW and a DNG are not images, they are
> data files that do not produce an image until one is exported. What you see
> in Lightroom or ACR is only a PREVIEW of what that output will be when you
> finally export it as an image. Therefore, the DNG file retains much, much
> more information than any sized TIFF, 8 or 16 bit, Adobe RGB or sRGB, even
> ProPhoto RGB.

True (or almost, but that's a different topic). That's the reason why it
is worth to use a decent raw converter and not dcraw, which reveals far
less of the information the raw file contains.