X3F Tools and Kalpanika - release 0.53!

Started Jul 18, 2015 | Discussions thread
oz75
oz75 Forum Member • Posts: 91
Re: Green/magenta italian flag with DP2M
2

DMillier wrote:

... I'm seeing the central area as a magenta tinted oval with the outside ring green tinted.

Anyone else seeing this?...

Yes, of course! An issue which is related to lens profiles used within SPP to elmininate these Merrill color casts.

This is a SD1 Merrill shot (120-400 HSM lens) within SPP6

SPP Development

The same shot within ACR after DNG-Conversion with x3f_extract (magenta blotches at the corners and greenish tint in the image center).

ACR Development after x3f_extract DNG concersion

Again: This is nothing caused by this phantastic tool created by Roland and his colleagues, but a specific Merrill issue.

A while ago, I had shown, how to remove these color casts.

http://www.dpreview.com/forums/post/52429226

Roland Karlsson wrote:

... And Sigma mainly wanted us to improve high ISO - something we did not. Thanks Rudy Guttosch (Sigma USA) for very constructive conversations.

Roland, as you had talks to Sigma representatives: Is there any chance that Sigma might provide you with its lens profile database? Possibly it could be implemented in the x3f_extract tool to eliminate the color casts during the DNG conversion process?

Regards,

Oz

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Canon EOS 5D Mark II Canon EOS 1000D Sigma SD9 Sigma SD10 Sigma SD14 +6 more
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