curtis_nelson Posted August 4, 2003 Share Posted August 4, 2003 What happens to unexposed film when it gets hot? I'm asking because I left several film holders loaded with HP5+ in my car all day and the temperature inside got pretty high. Is the film ruined, or should it still be usable? If the film IS bad, how would I know? I don't think my untrained eye would be able to spot any difference unless it was major. Thanks Link to comment Share on other sites More sharing options...
mark_sampson Posted August 4, 2003 Share Posted August 4, 2003 B/W film these days seems to be rather forgiving, though I can't speak for HP5. The most likely bad effect would be some overall fog , making the d-min areas (like the unexposed edge) more dense; thus lowering your overall contrast. I use Kodak film, and have not experienced any type of problem when circumstances have meant my film has been overheated. I do travel with my sheet film in a cooler. Color film, however, is another matter entirely. If you bake that, you can expect unpleasant color shifts. Link to comment Share on other sites More sharing options...
michael_chini Posted August 4, 2003 Share Posted August 4, 2003 You're fine. Use it and don't worry about it at all. Link to comment Share on other sites More sharing options...
doug_dolde Posted August 4, 2003 Share Posted August 4, 2003 I bought an Igloo Kool Mate which runs off 12 VDC for the car. Keeps the temp 40 deg F below ambient air temp. Link to comment Share on other sites More sharing options...
skygzr Posted August 4, 2003 Share Posted August 4, 2003 I keep a camera in the car at all times, and every day in the summer it bakes at 100F or more. I've NEVER noticed any problem with the negatives (Neopan 400). I don't know how much heat it takes to ruin film, but one summer's worth doesn't seem to do it (at least in Charleston). Link to comment Share on other sites More sharing options...
louie_powell1 Posted August 5, 2003 Share Posted August 5, 2003 The general concensus appears to be that allowing film to get hot does no harm. That's reassuring - many of us have faced the quandary of what to do with the film while traveling a car and we stop to go shopping. However, I had an experience a couple of years ago that causes me to question this collective wisdom. I purchased a couple of bulk rolls of TMY from one of the major NYC distributers, and found that both rolls were fogged. The only thing I could attribute this to was that no one was home when the UPS guy delivered the box, and he left it by the side door - in the sun on the blacktop driveway. Link to comment Share on other sites More sharing options...
henrycrafter Posted August 6, 2003 Share Posted August 6, 2003 I live in Tucson Arizona. I use 120 Portra 160 VC and NC The temperatures here reach 115 in the summer. I do mostly outdoor photography with a Speed Graphic and a roll film adapter. So far I have not had andy problems withe the film Link to comment Share on other sites More sharing options...
billkantor Posted August 7, 2003 Share Posted August 7, 2003 I baked Fuji Provia once for a full day in my car. Must have gotten to be at least 110 f inside. No noticable shift or degradation. Link to comment Share on other sites More sharing options...
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