Archived posting to the Leica Users Group, 2005/03/19
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Lew, Most of the C-41 machines are roller transport and are designed to run hundreds of thousands of rolls of film within the standard C-41 specs. Timing is gear driven with a single speed motor. Some C-41 machines can be modified with a different gear set on the developer racks to change the time. Frequently, labs that do a lot of B&W have adjusted older C-41 machines to run variable times so that they can "push" B&W film. As to why most labs don't push film, do you really think the owners want to risk tens of rolls of film when the 18 year old left the wrong developer time on the variable machine? Dip and dunk lines are completely different and can be set to run whatever needs to be done. I suspect that the labs that push C-41 are using dip and dunk predominately. Don dorysrus@mindspring.com -----Original Message----- From: lug-bounces+dorysrus=mindspring.com@leica-users.org [mailto:lug-bounces+dorysrus=mindspring.com@leica-users.org] On Behalf Of Lew Schwartz Sent: Saturday, March 19, 2005 3:13 PM To: 'Leica Users Group' Subject: RE: [Leica] More on Pushing C-41 films I feel that "can't be done" is unlikely. After all, the C-41 specs, temps and times do change on occasion. Any machine that can't be adjusted is faced with obsolescence. -Lew -----Original Message----- From: lug-bounces+lew=speakeasy.net@leica-users.org [mailto:lug-bounces+lew=speakeasy.net@leica-users.org] On Behalf Of Didier Ludwig Sent: Saturday, March 19, 2005 3:01 PM To: Leica Users Group Subject: RE: [Leica] More on Pushing C-41 films At the photo store, where I usually let my B&W C-41 films processed, they told me pushing can't be done with their (small) C-41 engine, and needs a manual job. They had to send it to their central store. So the quality of a pushed B&W film is quite depending on how good this manual job is done. It costed me much more than the regular processing, and the quality was mediocre. I had the impression that they were just bored to do extra-orders on film and would have preferred to sell me a digital camera and printer... Didier >Maybe they're not willing or just don't know. I'm not sure that all of >the automated C-41 machines can do this, and, obviously, they can't put >it through with their regular stuff. Why not offer some extra cash and >to wait a few days? >-Lew _______________________________________________ Leica Users Group. See http://leica-users.org/mailman/listinfo/lug for more information _______________________________________________ Leica Users Group. See http://leica-users.org/mailman/listinfo/lug for more information