Archived posting to the Leica Users Group, 1997/09/28
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Gary Todoroff wrote: > On my 1C, I used a "chemical focus" technique describe in a 1970's "Leica > Photography" article. You determined precise focus by inspecting the > developed prints that were done at slightly different settings, then > locking in the helical ring. From that point on, I never gave focus a > second thought on the 1C. > Gene Nocon--a gentleman who runs lab across the street from studio and has printed for many greats uses a blue filter in his focusing tool Without it he says prints arent truly focused He showed me print coparisons and he is right Probably big factor at wider F stops Apparently this is standard knowleddge among high level lab types When I get back into do my own printing I will definitely get the filter maybe APO lenses dont need it I`ll ask when I return > One other problem I'm curious if anyone else has noted on a V35: the amount > of light with the quartz-halogen bulb does not seem very bright. Just to do > an 8x10 on a dense neg (say 2-3 stops overexposed) can take 20-30 seconds > at f4. I would like to be always using f5.6, but even normal negs can > require very long burning in times for 8x10. Dont the bulbs come in different wattages Donal Philby Kauai Hawaii (still with some non-working keys on laptop--sorry)