Anyone shot/compared both the new Zeiss C Sonnar and "classic" Sonnar (coated)?
I have Zeiss-Opton 1,5/50 (Contax mount) which I use on my Kiev II and M6 with Amedeo adapter. I LOVE it. I think it's a perfect match for slide film which I decided to shoot while it's still around. Still, focusing and aperture rings turn in the "wrong" direction.
Funny thing is, I did own the new C Sonnar but I shot it mostly on digital and foolishly sold it. Anyone went from old to new Sonnar and lived to tell?
Hello brbo,
I thihk I'm the one to answer your question, as it was me who bought your ZM 50mm C-Sonnar about 2 years ago!
I have an uncoated Opton Sonnar in Contax mount (which I used on a Contax II until that camera broke), and then I've used your former C-Sonnar on a Leica M4-P. I've shot both these setups at different times, and never "tested" the lenses, I only shot with them in my normal use. I've shot C-41 colour films with them both, but not the same exact film (old Porta NC 400 before, and now new Portra 400).
So my impressions are far from a scientific analysis. But I sold your modern C-Sonnar a couple of months ago and kept the vintage Zeiss lens (from 1939 I believe). For me the determining factor was not so much image quality (more on that below), but whether or not I could use the ZM C-Sonnar as my "everyday", all-around, do everything 50mm lens (I hoped I could be due to its fast aperture and relatively small size (stubby profile)).
But I really didn't like the 1/3 f-stops on the ZM lens, and the general ergonomics compared to all my other lenses with are 1/2-stop Leitz/Leica lenses. The IQ from the C-Sonnar was excellent though, but I little too modern/contrasty for my taste.
Once I realised that I didn't want the C-Sonnar as my "everyday", all-around, do everything 50mm lens, then it became a specialised lens in my eyes, and if I'm reaching for a specialised lens already, I might as well go all the way, and use the old, uncoated Zeiss Opton whose images have more of the "vintage look" (softer and less contrasty).
By the way, I didn't notice any significant differences between the two lenses in terms of bokeh. The ZM C-Sonnar was sharper (or gave the impression of sharpness via higher contrast).
I'm now testing the MS-Optical 50mm f/1.1 Sonnetar as my "everyday", all-around, do everything 50mm lens. It is quirky ergonomically, but so far I like it as it is very small and light-weight, 1-stop faster than the Zeiss Opton Sonnar, focuses to 0.8 meters, and doesn't seem to suffer from focus shift (magically). I tested the Sonnetar under controlled conditions on a tripod mounted Sony NEX-5n which I briefly owned, and found that (a) it REALLY was 1 stop faster, and (b) I could not see any focus shift when stopping the lens down.
And indeed, so far in real-world usage I seem to be nailing focus better with the Sonnetar than I did with the C-Sonnar.
I think in the end I'm going to pair the 50mm Sonnetar with a 50mm modern Elmar-M that I also own, and which is the best 50mm lens I have ever used - but of course only opens up to f/2.8!