the iscorama's are known for it and you can rack its just has a really long turn on the focus ring and they came from the factory as tight as mine so its hard to do during a take. Like you cant crank the focus fast from one spot to another.
I have found that the helios is the best, I have a nikkon 501.4D but its multicoated. Im also looking at an early nikon 50 1.4 nikkor-s. If you can find one without the C like Nikkor-sc then its not multicoated. Im also looking at getting a set together. I have the russian MIR24N 35mm F2 which is a cheap sweet 35.
Right now the guys at Dog Schidt optiks are making my 2 helios conversion lenses I'll be sure to post some stuff when I get them.
