The best is a very subjective rating. I have several moderate teles and would use any of them at one time or another for a particular look or quality.
The old 90/4 is great for a softer look when compared to the 90/2 (1985ish ‘cron). You can get them for a reasonable price and they are very small and easy to carry. Ok over all lens too when you stop down. I used one for several years as a carry everywhere kit, that and an old 35/3.5, both M mount. The 90/2 ‘cron is a great lens, built in shade, smaller than the Nikkor 85/2 and sharp. I love it, but it’s been replace by a Nikkor.
Of late, the Nikkor 105/2.5 is what I carry and use most. I love it and the price is reasonable these days. It’s much lighter than my chrome Nikkor 85/2 and about the same physical size. Takes 52mm filters, what could be better. The Nikkor 85/2 is a fine lens, but the 105 is GREAT. It is very hard to get a black 85, where as the 105 only came in black. Finders are a pain to find for either.
I’ve purchased a CV 75/2.5 to complete my son’s kit (a 35/1.7 is his main lens) and was very impressed with it. In hind sight, should have gotten one for me years ago, it’s a great size and very sharp.
I have to admit, I lust for the new 75/2. It is a GREAT lens, I wish Pres. K, would come out with a faster 75, perhaps a 1.8, but it does not look like it’s in the cards.
I have heard great things about the Steinheil Munchen 85/2.8, but never had one. Got one once, but it turned out to be in the wrong mount. I have never been a big Canon fan, so
If I were you I would look at the CV 75/2.5, it works well on any Bessa. If you go faster, you might run into focusing issues close up with their short effective rangefinder base length (
http://www.imx.nl/photosite/leica/technics/rfaccuracy.html ). While good LTM 105/2.5 do not grow on trees, there is one on xbay almost every month. They cost about $75 more than you pay for the new CV. Something you might want to think about is the fact that the f-stops go the opposite direction of CV lenses. Not a big deal for me, but I did not start my son with my 85/2 for that reason.
B2 (;->