Hello,
I plan to add a longer lens to my collection - a 75mm or 90mm. Currently, my longest lens is a 50mm. I am considering the Summarits - due to their nice rendering, low weight and attractive price (well, at least in the Leica bubble ). I would prefer 90mm for the longer reach, however I am a little worried about my focusing ability on a M9. Some experiments with a CV 90 Apo-Lanthar showed me that at least that lens is quite difficult to focus consistently on a body without LiveView. So, is there a significant difference in focusing ease between the 75mm and 90mm Summarits? Some other lenses to consider?
--mk