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]
Archives for September 2013
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]
Leica M240 green shadows with another sample
I am grateful to have received a set of five M240 raw images that are similar to the ones that I used to compare the shadow noise and push color shifts of my M240 and the RX1 in this post. While not exactly the same as the images from my M240, these new images exhibit… [Read More]
Leica M240 unity gain ISO
Using the methods described in this post, I compute the Unity Gain ISO of the M240 at about 400, and the full-well capacity at about 33000 electrons. For comparison to some other cameras, I offer the following two graphs. The Unity Gain ISO of the M240 is right on the state-of-the-art line, and is only… [Read More]