Benjamin Marks said:
It will take you a little while to figure out what lens matches the way you see. If you are really going to be using the lens to do street photography, I would opt for the 40/1.4. It is probably the best deal on reasonably fast glass out there (C/V 50/1.5 also worth considering). Shoot with it for six months and see whether you find yourself "taking a step backwards" when you compose. I have both the 40/1.4 and the 40/2 Summicron. Both are excellent lenses. Some folks do not care for the boke of the Nockton wide open, others (Sean Reid comes to mind) have found that there is some focus shift with this lens when stopping down from 1.4 to 2.8. I have never found that either issue affects my pix. Most folks find that they gravitate to a certain field of view when choosing a favorite lens. My weakness is for 50s. If after six months, you aren't happy you can sell the lens you chose and try something else.
Ben Marks
Ben, I shot the 35 Ultron and Nokton 40 and will hopefully see the results tomorrow - that would also help me make a decision.
Been thinking a bit more about these lenses and I think that (putting the angle
aside) I find the Ultron preferable.
This lens is much better built , I find it more comfortable to focus (no focus tab) and of course easier to frame (no 40 framelines in M6).
In addition, this lens is discontinued but still sold. It think that in a few months it will be hard to get. Black copies are already hard to find.
However, I understad what you said about choosing my preferable angle of view. I still don't know it and I think it'll take some time.
I mostly used 40 in my previous RF and found it really usefull. In my SLR zoom lenses I usually shot as wide as I could (28). However, I think it's a bad habit, and that I should to limit myself to a narrower angle.
Do you think 40 is a better starting point than 35?
Should I consider the Rokkor of Cron? I don't really like the way the Nokton is built and handled.
Many thanks for your answers!
Assaf