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Thread started 17 Sep 2011 (Saturday) 16:58
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Correcting non-Canon lenses in DPP?

 
LudwigVB
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Sep 17, 2011 16:58 |  #1

Does anyone know if the correction capabilities of Canon's Digital Photo Professional (DPP) software can be used in some way to correct distortion, vignetting, CA and color blurring in non-Canon optics such as Tamron or Sigma?




  
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tonylong
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Sep 17, 2011 17:01 |  #2

I don't know -- do you have a lens like that, and do you have DPP, so that you could run tests and post back and let us know?


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LudwigVB
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Sep 17, 2011 21:43 |  #3

Good question. I do have DPP, which is the reason for my question, because I know there is data available to it from EXIF info from, many Cannon lenses but I'm not aware of such data coming from other lenses. Nor am I aware of DPP providing for any correction parameters that could be applied manually.

I've been contemplating buying UWA and "standard" zoom lenses, by Tamron and Sigma, that are subject to barrel distortion, vignetting and some CA. I do have a Tammy 70-300mm VC but that lens is so good that any "problems" are too minor for corrections in DPP to be visible - at least, by me.




  
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MGiddings ­ Photography
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Sep 18, 2011 16:40 |  #4

DPP only corrects certain Canon lenses.


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tzalman
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Sep 18, 2011 17:05 |  #5

I know there is data available to it from EXIF info from, many Cannon lenses but I'm not aware of such data coming from other lenses.

The correction data for supported Canon lenses is not in the Exif; it is in DPP and its use is triggered by the lenses' numerical designations which are in the Exif. Some Sigma lenses have numbers that are the same as numbers used by Canon lenses and this will fool DPP into applying the corrections for a Canon lens, but they will be "incorrections", as it were.


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junkbot
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Dec 09, 2011 07:16 |  #6

I don't suppose there's a list out there of which Canon (and non-Canon) lenses work?




  
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yb98
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Dec 09, 2011 07:56 as a reply to  @ junkbot's post |  #7

Even my canon 70-200 4L is not supported. So I would be surprised if other non canon lenses were supported...


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Kafn8td
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Dec 09, 2011 11:16 |  #8

Here's an older list of lenses that DPP supports. I'm not sure if it has changed.

Using all this camera, lens and image information, adjustments can be made automatically to the images to ensure the highest possible quality with the system.
Thirty-two lenses are supported by the lens correction function. These can be seen in the table below.
Lens

EF14mm f/2.8L USM
EF24-105mm f/4L IS USM
EF14mm f/2.8L II USM
EF28-70mm f/2.8L USM
EF20mm f/2.8 USM
EF28-135mm f/3.5-5.6 IS USM
EF24mm f/1.4L USM
EF28-200mm f/3.5-5.6
EF28mm f/1.8 USM
EF28-200mm f/3.5-5.6 USM
EF35mm f/1.4L USM
EF28-300mm f/3.5-5.6L IS USM
EF50mm f/1.2L USM
EF100-400mm f/4.5-5.6L IS USM
EF50mm f/1.4 USM
EF-S60mm f/2.8 Macro USM
EF85mm f/1.2 USM
EF-S10-22mm f/3.5-4.5 USM
EF85mm f/1.2 II USM
EF-S17-55 f/2.8 IS USM
EF100mm f/2.8 Macro USM
EF-S18-55 f/3.5-5.6
EF16-35mm f/2.8L USM
EF-S18-55mm f/3.5-5.6 II
EF16-35mm f/2.8L II USM
EF-S18-55mm f/3.5-5.6 USM
EF17-35mm f/2.8L USM
EF-S18-55mm f/3.5-5.6 UII USM
EF17-40mm f/4L USM
EF-S18-55mm f/3.5-5.6 IS
EF24-70mm f/2.8L USM
EF-S55-250mm f/4-5.6 IS




  
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ettlz
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Feb 18, 2012 06:51 |  #9

Getting DPP's lens aberration correction to work with my non-Canon lens

Up until a few releases ago, for some reason Digital Photo Professional enabled its lens aberration correction functions for at least one non-Canon lens, namely the Tamron 17-50mm f/2.8. In more recent versions it doesn't, which for me was disappointing as it does a very good job of removing this lens's chromatic aberration.

As far as I have experimented, I believe that DPP identifies the lens based upon the ShortFocal, LongFocal and LensType EXIF tags. So I installed ExifTool:

# [B]yum install perl-Image-ExifTool[/B]
and had a play with some of my CR2 images' EXIF tags. I wanted DPP to think the shot was taken with a Canon lens with comparable optical characteristics. Having no idea which one does, I made an educated guess and chose a Canon lens with similar focal range and aperture: the 'Canon EF-S 17-55mm f/2.8 IS USM' (the name in quotation marks is its specific ident string in the file /usr/share/perl5/vendo​r_perl/Image/ExifTool/​Canon.pm that comes with the ExifTool package. I made a working copy of the original CR2 file, and then to alter the relevant tags I ran:
$[B] exiftool -LongFocal=55 -ShortFocal=17 -LensType='Canon EF-S 17-55mm f/2.8 IS USM' [I]working-copy[/I].CR2[/B]
and opened it up in DPP 3.11.

Lo and behold, it worked! Aberration correction was enabled, and it cleaned up the CA marvellously. The following are screen-shots at 100% from DPP. The image was taken on a Canon EOS 60D using a Tamron 17-50mm f/2.8 lens, at 17mm, aperture f/8.0. The image on the left is with no correction applied, the one on the right with CA correction set to 100. (Apologies for the cursor in the way.)

IMAGE: http://img814.imageshack.us/img814/488/cacorrect.png

Some notes:
  • I've only tested chromatic aberration correction. Distortion and vignetting correction are different ball-games and will probably need further experimentation to find the best choices of lens model.
  • This test was only at 17mm. I don't know if the optimal alternative lens choice might vary with focal length, but there's plenty of parameters for adjustment of the CA correction function in DPP that might very well make this a non-issue.
  • This is the only non-Canon lens I've tried this on so far. I also have a Sigma 18-250mm f/3.5-6.3. Again, this could take some experimentation before finding the optimal match.


Update, 2012-02-26
The Canon EF-S 18-200 f/3.5-5.6 IS seems to be a good substitute for the purposes of enabling lens correction for images shot with the Sigma 18-250mm f/3.5-5.6 OS.
$ [B]exiftool -LongFocal=200 -ShortFocal=18 -LensType='Canon EF-S 18-200mm f/3.5-5.6 IS' [I]filename[/I][/B]

Update, 2012-08-27
For the Tamron SP 70-300mm F4-5.6 Di VC USD, I use Canon's functional equivalent:
$ [B]exiftool -ShortFocal=70 -LongFocal=300 -LensType='Canon EF 70-300mm f/4-5.6 IS USM' [I]filename[/I][/B]

Canon EOS 60D :: Canon EOS 7D :: Canon EOS 10 :: Canon EF-S 18-55mm f/3.5-5.6 IS STM :: Manual-focus Canon EF 50mm f/1.4 USM :: Canon EF-S 55-250mm f/4-5.6 IS STM

  
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yb98
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Feb 18, 2012 10:59 as a reply to  @ ettlz's post |  #10

Thanks for sharing.


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Correcting non-Canon lenses in DPP?
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