More info sought on DNG Recover Edges

[ho_co]

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In a separate thread (http://www.leica-camera-user.com/digital-forum/3824-dng-recover-edges-dmr.html) I found out that the DMR uses a much higher quantity of its available image pixels than the Nikon D200.

 

According to a DMR owner in the other thread, the DMR delivers an image of 3872 x 2576 pixels. DNG Recover Edges recovers 51.7 thousand pixels, making the full image 3884 x 2584 pixels. That is, the DMR normally delivers 99.4% of its available image data.

 

My Nikon D200 delivers an image of 3872 x 2592 pixels. DNG Recover Edges recovers 166.2 thousand pixels, making the full image 3900 x 2616 pixels. Thus, the D200 normally delivers only 98.4% of its available image data.

 

Any idea why? Or is this one-percent difference meaningless?

 

How do Canons compare with these results? Anybody able to add M8 data?

 

It’s only speculation, of course, but one explanation might be that Leica simply feels it is safe to use more of the lens’ output. That is, Leica may be happier with the performance of its lenses toward the edges than other manufacturers are.

 

Thanks for any insights!

 

--HC

 

(Explanation of why and how DNG Recover Edges works, as well as a free download of the applet, is available at http://www.luminous-landscape.com/contents/DNG-Recover-Edges.shtml.)

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