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Thanks for confirming this is the case. I definitely agree as it's one side effect I'm seeing with the ISO-less approach to the M9, but more so for some of the wider lenses, which of course, makes perfect sense. The solution would be to disable lens coding and apply Cornerfix, LCC or Adobe Flat Field correction, but is a bit of a hassle too. And completely agree with your observations regarding coding and the 50. I noticed this also with a number of lenses. It was particularly a problem with my hand-coded ZM glass, where from time to time the...Show more →
Hi, Ron. I decided to give the Adobe Flat Field correction plug-in for LR4 a try today, and I'm really impressed. I just shot a single calibration shot with a tissue over my lens at infinity and wide open aimed toward the sky, and it is as good or better than any of the Leica profiles for my collapsible. You can run it simultaneously (batch) over as many files as you wish, and it gives you the option of only correcting color (and not vignetting,) which I thought that Edward may be interested in with his ZMs. Honestly, it will only add a couple of clicks to my workflow, so I don't consider it a burden in the least (unlike CornerFix.) Granted, I'm only shooting the 50, so I don't have to keep track of which lens is which (accept for when I do an occasional portrait session with my 90.)
Here is a quick test shot with my 50 Cron V1 at f8 and near infinity with coding turned off. While not terrible, the cyan shift is noticeable in places like the right hand side of the building, and it was bugging me enough to try coding again:
Here is the same shot with the flat field correction applied.
Lightroom stacks the version, so this doesn't clutter things up, and I think no coding plus flat-field correction is my choice from now on. Coding the lens is normally fine for me, but I don't love how the edges look with the vignetting correction in low light, so I want to avoid any vignetting correction (even when I set the camera to high ISO, there's just too much of the vignetting correction, IMO.)
BTW, nice pictures everyone!! Sorry for the boring test shots.