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CornerFix 1.3.0.4 available for download


sandymc

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CornerFix 1.3.0.4 is now available.

 

This version:

 

1. Fixes a bug that could under rare circumstances result in the color temperature of the corrected image not being the same as the original image. In other words, the corrected image would have a uniform color cast across the image.

 

2. Adds the ability to decode a subset of the M9's MakerNotes, specifically the lens id and the guestimate aperture. This decoded information can then optionally be added to the image's EXIF data. Thanks to Carl Bretteville for his images and help with this feature.

 

Note that there is no need to regenerate any profiles to use this version.

 

The new version can be downloaded here: CornerFix | Get CornerFix at SourceForge.net

 

Enjoy

 

Sandy

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Dear Sandy - first I join in the heartfelt applause for your work on this. Really thank you!

 

Second - a followup to your recent blog posting (ChromaSoft: Vignetting Correction Issues on the Leica M9) + my own recent experience with the 18mm Zeiss coded as 18 Super Elmar. Love the lens and for B&W it's an ideal tool and great value. However, for colour work the dreaded red shift on the left is strongly evident (see below).

 

Am I right on reading so far that Cornerfix can't really help here? I've played around with the settings and nothing seems to work. Vignetting on this lens with the M9 isn't an issue - it's just the colour shift which hurts...

 

Grateful for any advice - I've looked through the previous posts and got the impression that some people were using Cornerfix to sort this problem on coded lenses - but I've not managed. Would it be best in the case of the 18 to shoot uncoded and then use corner fix as a batch to sort the images before importing to Lightroom?

 

Thanks again...

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Hi Chris,

I had a problem like this with my CV15mm.

I've been able to create with CornerFix a profile which totally eliminate the vignetting and the color shift.

The M9 setting which has worked for me is with lens recognition off, and the profile was created shooting against an home made white difffuser with exposure compensation at EV+2.

The result can be seen here:

http://www.l-camera-forum.com/leica-forum/leica-m9-forum/105834-cornerfix-1-3-0-3-available.html#post1117412

Cheers,

Ario

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Same here CF vers 1.3 CV 15 shot uncoded - works well!

 

I now play around a bit coding it as a 28mm 11809 - that together with FC would be nice as well!

 

rgds

JPH

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... Am I right on reading so far that Cornerfix can't really help here?

 

Just a wild guess...

 

is it because your picture have similar shade of red at the center of the photos? My assumption is that this CornerFix is taking reference colors from the center?

:confused:

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Dear Sandy - first I join in the heartfelt applause for your work on this. Really thank you!

 

Second - a followup to your recent blog posting (ChromaSoft: Vignetting Correction Issues on the Leica M9) + my own recent experience with the 18mm Zeiss coded as 18 Super Elmar. Love the lens and for B&W it's an ideal tool and great value. However, for colour work the dreaded red shift on the left is strongly evident (see below).

 

Am I right on reading so far that Cornerfix can't really help here? I've played around with the settings and nothing seems to work. Vignetting on this lens with the M9 isn't an issue - it's just the colour shift which hurts...

 

Grateful for any advice - I've looked through the previous posts and got the impression that some people were using Cornerfix to sort this problem on coded lenses - but I've not managed. Would it be best in the case of the 18 to shoot uncoded and then use corner fix as a batch to sort the images before importing to Lightroom?

 

Thanks again...

 

Chris,

 

CornerFix V1.3.0.4 should be able to deal with that easily. Pre V1.3.0.2, CornerFix did have trouble with the kind of red edge that the 18mm can give, but the newer versions should be fine.

 

The recommended way is indeed to shoot uncoded - it gives CornerFix a less complicated problem to deal with - but with V1.3.0.3 onwards everybody that has tried has reported success with coded lenses as well.

 

Regards,

 

Sandy

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Just a wild guess...

 

is it because your picture have similar shade of red at the center of the photos? My assumption is that this CornerFix is taking reference colors from the center?

:confused:

 

Mark - corner fix NOT applied to this one - only the lens and Leica combined to blame... :cool:

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- but with V1.3.0.3 onwards everybody that has tried has reported success with coded lenses as well.

 

Sandy - thanks.

 

Can I just get this right. To create a lens profile that you can then apply to all other instances of images from this particular lens, you

 

 

  1. create a uniformly lit but content free image (a backlit styrofoam diffuser has been mentioned by another list member)
  2. you then build a profile with corner fix from this image (putting the main settings at +2 and +2)
  3. save the profile

When you want to use it you can run a batch process across the images before you import to Lightroom and these changes will be picked up BY LR...

 

Sorry if this is a set of silly questions - but I've not engaged with Cornerfix up until now as I shot with filtered lenses on the M8...

 

Thanks again...

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Sandy - thanks.

 

Can I just get this right. To create a lens profile that you can then apply to all other instances of images from this particular lens, you

 

 

  1. create a uniformly lit but content free image (a backlit styrofoam diffuser has been mentioned by another list member)
  2. you then build a profile with corner fix from this image (putting the main settings at +2 and +2)
  3. save the profile

When you want to use it you can run a batch process across the images before you import to Lightroom and these changes will be picked up BY LR...

 

Sorry if this is a set of silly questions - but I've not engaged with Cornerfix up until now as I shot with filtered lenses on the M8...

 

Thanks again...

 

Chris,

 

Yes, except that I'm not sure what you mean by "main settings at +2 and +2".....

 

Regards,

 

Sandy

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Chris,

 

Yes, except that I'm not sure what you mean by "main settings at +2 and +2".....

 

Regards,

 

Sandy

Sorry - that wasn't clear.

 

Someone mentioned setting Chroma and Luminance to +2 in the Image Correction options. Is this the way to go?

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Chris,

I used to overxpose +2EV on the camera when shooting for the profile.

In the profile creation preferences , multiple equation unchecked, bidirectional correction and luminance compensation checked.

In the color preferences both luminance and chroma at -1 (default setting).

 

Ario

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Sorry - that wasn't clear.

 

Someone mentioned setting Chroma and Luminance to +2 in the Image Correction options. Is this the way to go?

 

Chris,

 

No, not recommended. Where did that come from? You'd only want those kind of settings if you are trying to use the profile from one lens to correct the image from an entirely different lens.

 

Generally, you should be able get 100% correction using CornerFix with its default settings - you would only want to change settings if you deliberately don't want 100% correction. But I'd strongly recommend that your starting point be getting simple 100% correction. Leave the complications for later!

 

It can be a good idea to overexpose by 1.5 to 2 stops when you create the reference image, but as a starting point, I'd just use a normal exposure.

 

Regards,

 

Sandy

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Mark - corner fix NOT applied to this one - only the lens and Leica combined to blame... :cool:

 

 

I thought you said your photo can't be fixed by the CornerFix. What I was wondering if the algorithm of this software use color reference from the center of the photos then adjust the corners accordingly.

 

I do admire all of you who have guts (and finance) to be the early-adopters to these machines/instruments that redefind what is possible. Not to mention many of you did the same with the M8 and the filters. I am thankful for your dedication.

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