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Forum: Film SLRs and Compact Film Cameras
07-30-2008, 06:11 AM
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There should be no such thing as an under the table favour. If you are in the habit of doing them, you are asking to have your job taken away from you.
If you are in the habit of writing the customer's instructions on their envelope, and nothing else, there should be no problems.
If it is a special service for your lab, then have the customer sign off below the processing instructions to prove later on that you were following instructions.
Also, don't do it for free. Put a surcharge on the job at least equal to your processing charge. This will eliminate most of the morons from even asking.
The truth about C-41, BTW, is that it is a develop to completion process, and push processing has between very little or no effect on the final outcome. Generally, all that happens is the mask gets a little darker.
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Forum: Film SLRs and Compact Film Cameras
07-29-2008, 07:09 PM
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Do you work in a lab? Not many people know about shutting the main drive off on a minilab processor to push process a film.
Years and years ago, when the internet was still cooling, I did a whole bunch of film grain tests, which I published to the net. One of the things I tested was Ektapress film, which I pushed 1 and two stops to see what would happen (not much, it turned out). Kodak listed the times as +15 seconds for a 1 stop push, +30 seconds for a two stop push, time deviations listed are from the standard C-41 dev time of 3:15 (IIRC, it's been a while since I've had to know this stuff).
I liked the old Kodak High Speed Recording film, which was nominally an 800 ISO film with all the contrast range of a pancake at that speed, but it came alive at 2400 ISO.
I'm sure I still have 10 rolls of it in the freezer.
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Forum: Film SLRs and Compact Film Cameras
07-29-2008, 06:05 PM
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You are going against the grain, so to speak. Manufacturers try to reduce grain in film because it is considered objectionable.
Anyway, higher ISO films will be grainier than lower ISO films, so try to find the 1600 speed stuff.
Faster if you can get it.
If you underexpose a little bit, you will increase the grain, but at the expense of shadow detail and contrast. If you are processing digitally, you can get the contrast back during that stage.
The easiest thing to do is to shoot looser and crop more. Magnification and grain go hand in hand.
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