gordon_lukesh1 Posted February 7, 2010 Share Posted February 7, 2010 <p>This has probably been discussed, but I live at 7,000 ft in the Rockies. I have had success enlarging, partly because if I blow it, I can try again. But I want to get back into B&W film developing and you really only get one chance. Other than trying a few rolls of "test" photos around my yard, any suggestions?</p><p>TIA - Gordon</p> Link to comment Share on other sites More sharing options...
john_a5 Posted February 7, 2010 Share Posted February 7, 2010 <p>I have never heard of altitude affecting development, only temperature and dilution!</p> Link to comment Share on other sites More sharing options...
dave_s Posted February 7, 2010 Share Posted February 7, 2010 <p>What John A said. You are perhaps misled by the fact that at 7000ft (2100m), atmospheric pressure is usually lower, so the boiling point of water is lower. It takes longer for you to cook pasta or boil an egg than it would at sea level. This has no effect on chemical reactions which take place at 68F (20C), so develop away.</p> Link to comment Share on other sites More sharing options...
Mike Gammill Posted February 7, 2010 Share Posted February 7, 2010 <p>AFAIK, the only big change with altitude is the boiling point of water will be lower. This means if you don't tightly cap your liquid chemicals the water will evaporate from them at a greater rate, although this may not be signficantly faster. But, possibly, since the partial pressure of oxygen is less at altitude, chemicals that oxidize easily (Dektol, FX-39) might keep a little better.</p> Link to comment Share on other sites More sharing options...
DB_Gallery Posted February 7, 2010 Share Posted February 7, 2010 <p>I am 8,000 feet, it is fine.</p> Link to comment Share on other sites More sharing options...
gordon_lukesh1 Posted February 8, 2010 Author Share Posted February 8, 2010 <p>I appreciate the inputs! I know about cooking here, for example a frozen lasagna that says "55 mins" can take up to 70 mins. I figured the answer but wanted expert advice!</p> Link to comment Share on other sites More sharing options...
boris_krivoruk3 Posted February 8, 2010 Share Posted February 8, 2010 <p>I live just outside Denver @ 6300 freet. No problem for color, no problem for B&W processing.</p> Link to comment Share on other sites More sharing options...
gordon_lukesh1 Posted February 9, 2010 Author Share Posted February 9, 2010 <p>All:</p> <p>Thanks, we can bring this thread to a close!</p> <p>Boris: Gotcha by about 600 ft here in Taos.</p> <p>Gordon</p> Link to comment Share on other sites More sharing options...
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