R lens underexposure and M lens adapter

[xx edwardk]

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Greetings all.

 

I am a new owner of a Leica CL. There's much to admire (and to learn) about it, but I am struggling with two issues with adapted lenses.

 

I purchased the hideously expensive Leica R to L adapter for my Leica R 28-90 lens. It all fits perfectly, and the camera instantly recognizes the lens. I worked with it in Manual mode. (The only other choice is Aperture Priority, but a couple of attempts with that produced similar results.) In M or A mode, the lens itself is always stopped down, but the EVF compensates nicely for that to keep the brightness useful.

 

It was late afternoon and I set the ISO to 800. In every case, I metered the scene, confirmed the exposure in the histogram, took the picture -- and the post-exposure histogram in Playback consistently showed one stop of underexposure. So too did the images themselves, by eyeballing them. I have exposure compensation set to zero, so I can't figure out what is going on. It's quite upsetting to spend so much and have this problem -- particularly since I can't figure out what might be to blame. I used the R 28-90 on a rented Leica SL (with a third party dumb adapter) and don't remember having this problem.

 

On a separate note, I bought the Voigtlander 15mm III M-mount lens to complement the Leica 18-56 zoom. Using the Leica M to L adapter, which I also bought, the Voigtlander is a very tight fit on the adapter. For those with this adapter, is it correct that the fit with an M-mount lens is very tight, or is this an issue just with the Voigtlander?

 

Many thanks for any light that you can shed on these questions!

 

Edward

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[xx edwardk]

Well, to my embarrassment, let me answer my own R lens question first. I went through each and every setting in the Menu. (Fortunately this is not as long an exercise as would be the case with a Sony.) Somehow in Drive Mode the camera had become set to Exposure Bracketing. So even though I had exposure compensation set to zero, I believe that the camera was taking the first of its standard three exposure bracketed shots, in this case the one stop underexposed one (the range I had set in the camera). A confusion on my part of Exposure Bracketing and Exposure Compensation, combined with an inexplicable inadvertent choice of the wrong Drive Mode.

 

Even a Leica's menu may be more than I can handle . . . .

[mikbau]

My Voightlanders are pretty tight on the adaptor as well.

 

 

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[lct]

Welcome to the forum .

I have no experience with the CV 15/4.5 v3 but my v2 copy is normally tight on the Leica M to L adapter and so is my CV 21/4 as well as my other M and ZM lenses.

I would try another M lens on your adapter and/or your CV lens on an M body to check which is the culprit.

 

[xx edwardk]

Thanks lct — I would if I had either!

 

Edward

[lct]

I see. But perhaps you can ask your Leica dealer to check the fit of your M to L adapter with other M lenses?