Hello, my name is Cristian Iacob. A few months ago I bought a Leica M8 camera and a new Biogon 35/2. I like this lens very much, but I still want to buy a lens that giving the 1.33 crop factor of the camera, to be a real wide lens. So I thought that Biogon 21/4.5 will be the right lens (not to more distortions, not extremely expensive and with some positive reviews). I saw that Leica M8 has 24 +35 mm and 28 + 90 mm framelines. Giving its 1.33 crop factor, Biogon 21/4.5, I guess that it will be like a 28mm on a Leica M9. On this point my question is which frame the camera will show to me as the nearest to the real focal length of the lens: 24 mm frameline (24 is close to 21/4.5) or 28 mm frameline (in fact this is the real focal of the Biogon 21/4.5 on a Leica M8). I would like to avoid an external viewfinder. Only if it is possible.
My second fear is that Biogon 21/4.5 could present color problems on a Leica M8. I have read on some forums that this lens has some color problems on Leica M9, but I found no answer regarding the combination Leica M8 and Biogon 21/4.5. Thank you very much, Cristian Iacob