[Leica] m10-R and uncoded lenses

[boulanger.croissant at gmail.com (Peter Klein)]

It's not hype, but it may or may not matter for you.

You can use most lenses uncoded and you will be fine. But the 
corrections do correct color shifts in the corners and edges of the 
frame. The shifts are only noticeable with lenses of 35mm and wider. And 
with 35s, the shift is often so slight most people wouldn't notice. The 
in-camera correction is a compromise between wider apertures where the 
shift is more prominent, and narrower apertures, where it is less 
noticeable. All digital cameras have some corner color shifts--it has to 
do with the angle of the light hitting the sensor. It's just that modern 
DSLRs and "mirrorless" models read the chip in the lens and correct 
automatically. With Leica lenses, there's no chip with "who am I?" 
information, hence the six-bit codes.

You might want to manually select a Leica lens in the camera menus for 
uncoded lenses wider than 35mm.

50mm and longer, it doesn't matter unless you want the vignetting 
corrections. For 35mm, slight cyan corner tints in shots at wide 
apertures may occur. They bother some people, but not others. At 28mm or 
wider, you probably will want to set the camera for a lens of that focal 
length if you shoot color. If the camera has your lens in its menu use 
that. If not, select something of the same focal length.

Hope this is helpful.
--Peter


 > Quoting Frank Filippone:
 >
 > >
 > > Nothing will happen.
 >
 > That's what I figured. I suspected it was all or mostly hype. Thanks
 > for confirming.
 >
 >
 > > What do you think of your choices?
 >
 > I like just putting the lens on the camera and taking pictures best,
 > as I've been doing since about 1970. It sounds like I can do this and
 > the results will be at least as good as my film Leicas. I've lived
 > without EXIF data this long; I think I can manage to do so the rest of
 > my days. I have a slew of Leitz lenses going back to the 1930's, none
 > six-bit coded, and all of which I like, even the Summar, the Rodney
 > Dangerfield of Leitz lenses.
 >
 > Thanks for your help.
 >
 > Howard