 Peggy D. Odegard-Coleman |
Film ISO I shot a roll of black and white 120 Ilford film at 125 instead of 400 which the film was rated at. I want the film processed without prints. I plan on making the prints myself. Do I need to let the lab know what I did, or does it matter? Will the photos turn out? I shot in the afternoon, 4:00 - 5:00 and in the shade. Thanks! Peggy Coleman
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- Gregory LaGrange Contact Gregory LaGrange Gregory LaGrange's Gallery |
They'll turn out. You'll have to make adjustments with contrast when you print. If the lab does do pull processing, you might have an easier time coming out with a print you'd call decent.
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robert G. Fately |
Peggy, by setting the ISO to 125 instead of 400 you have effectively overexposed the film by a bit less than 2 stops. That is, the camera "thought" that the film required almost 4 times as much light as it actually did, so it set the aperture/shutter speed in such a way as to provide that much light (time of day of exposure isn't relavant). Happily, negative film is fairly forgiving, so you might not have a major problem if you can control the printing process to compensate for the overexposed film. Better still, as Gregory mentions, is to advise the lab and ask that they "pull process" - this is the opposite of pushing film - where they underdevelop the film on purpose to try to compensate for the overexposure. Neither approach is ideal, but hopefully most of what you shot will be salvageable.
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Andrew Laverghetta |
I think there's an issue/magazine out called B&W Master Printing Class where he actually advocates putting your highlights higher in the exposure range light this for some cases. He's using large format black and white film and yes, he is underdeveloping but by exposing the highlights around "zone" 12 or 13 and underdeveloping, you can get a lot of info in the highlights still. The photographers name is Bruce Barnbaum and he's got some great stuff. If it's a lab that processes 120 film, they can probably pull film for a fee.
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Christopher A. Walrath |
If you had to meter you shots with an off camera meter and took the 125ISO into account you have nothing to worry about. But if the camera thought it was exposing at an ISO rating that was innaccurate then I would let the processors know of the error to be safe. Now I know Greg will take exception to this as it is contrary to his advice, but when it comes to your images, isn't it wise to at least err on the side of caution?
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- Gregory LaGrange Contact Gregory LaGrange Gregory LaGrange's Gallery |
"...isn't it wise to at least err on the side of caution?..." Don't see anything wrong with that statement.
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- Gregory LaGrange Contact Gregory LaGrange Gregory LaGrange's Gallery |
Ooohh, now I see. The thing about the light meter. If you're saying that if she used a light meter and measured with the light meter set to read an exposure for ISO 125, and then used that reading with the ISO 400, well that is wrong. Because she's still over exposing amost 2 f-stops. So procede with your tantrum Huey.
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Christopher A. Walrath |
O. K., Greg. I love the tantrum thing. So here goes. So I got it backwards. This is what you pricks do because say one wrong word and the a**h*les with the hurt feelings take it out on someone they presume to be weaker. And I like the faggotty red font. Why not get with the program and be like the rest of us who don't give the hind end of a rodent what we look like just to stand on someone else to make your insignificance look just that much less insignificant. And by the way, I'm dead on about the font cause you ain't got no horns there, Lonestar.
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- Gregory LaGrange Contact Gregory LaGrange Gregory LaGrange's Gallery |
If somebody gets told smaller f/stop number, smaller the apeture, expect for somebody to say, nope that's wrong. You stating that I'd take exception because it came from you show a big problem with your own ego. But I got that with the other tantrums you had. You got it wrong. Deal with it.(Wait a minute, disregard that. I forgot, you can't deal with it. Hence the tantrums) So since you seem to want to stay on the dramatic, I'll give you some other some more material. The expression is to stand on someone to make your insignificance seem more significant, not less insignificant. What you said is like saying bringing somebody down just to make yourself seem less tall. The color is brown.This is red. I'll give you another expression in black and white. Ignorant can be temporary, but dumb is forever.
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Christopher A. Walrath |
O-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o-o. Big Words Scare Me! Like Apeture.
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Peggy D. Odegard-Coleman |
Okay fellas, I printed the roll of b&w 120 film and the lab did the pull process, the negatives are a little dense. My instructor said I made the mistake in the good way, I over exposed vs underexposed this film. So far the pictures that I was able to print in class were very good. Thanks for all your input!
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Andrew Laverghetta |
Sweet, yeah I'm glad it worked out well. It's similar to what that guy did in that magazine I think I mentioned. I got it at Borders and it's got some really great advice in it and techniques this guy, Bruce Barnbaum, used on many of his prints along with straight prints (basic exposure) and the final print. If you have about $6 to spare, check it out. It's called "B&W Master Printing Class" and it's from the publisher of Photo Techniques. For easy identification, the cover is totally in black and white of course with a black border and there's a large photo of some clouds, possibly a storm coming over a large plateau in the desert with a very dark sky. He uses large format along with aspects of the zone system but you could definitly apply much of what he's doing if you're in the right situation. Of course, most of his stuff is landscapes similar to Ansel Adams in a way but the dodging and burning methods and seeing what you can get out of some prints is amazing. Good luck!
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