Now I’d like to quantify the effects of the blue/green shifts in the shadows that sometimes occur upon pushing M240 images. I’ll be comparing two sets of images, one that I created, and one sent to me by friend whose name I won’t mention, since he values his privacy more than the adoration of a grateful… [Read More]
Archives for 2013
Leica M240 color shifts with ISO, images
This is going to be a really boring post for most of you. I’m posting the images from which I derived the measurements in the preceding post. I expect they will only be useful to people who wish to verify my measurements, or create measurements of some of the other patches. All images are in… [Read More]
Leica M240 color shifts vs ISO
Some have said that the M240 exhibits color shifts with in-camera ISO setting changes. Before I try to track down he details of the green shadow shift under pushing, I thought I should check the unpushed shifts out. I made a series of ETTR exposures of the Classic X-Rite Color Checker at one-stop intervals to compensate… [Read More]
New RawDigger version out today
Those of you who’ve been following this blog for a while know that I love RawDigger. It’s (so far) free program for analyzing raw files, and I would have to spend a lot more time writing Matlab code if it didn’t exist. Here’s what’s new: See for yourself here. I’m really excited about exporting Bayer… [Read More]
Pushing Leica M240 files in Iridient Developer
I fired up Iridient Developer 2.2, and processed the M240 DNG images that I’ve been converting in Lr 5. There are several profiles available. I looked at two: one called RDv211 Leica M (Typ 240), and one derived from the DNG metadata. The first yielded results different from in general, but substantially the same in… [Read More]
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