Hi Chip, > Were you checking the exposures in the finder while using the Sigma? If the > exposure shown on the body is reasonably close (and I'll assume they are as > your EF 70-200 2.8L IS exposed well enough), the problem you are having > sounds most like a sticking or late diaphragm closure. Try pressing your > EOS 1V's stop down button while in Bulb mode and see if the diaphragm will > smoothly close as you change the aperture one click at a time. If there is > any sticking along the way you have your problem, diaphragm or logic to > control it. In any event it needs a trip to repair.
Well, I tried what you suggested and I couldn�t find any problem with the diaphragm. Also, I cleaned the contacts. Anyway, next weekend I will go out and shoot a roll of film testing the lens, simulating the circumstances I had when I was in the Rockies. Hopefully I will find out anything. Otherwise I will send the lens to the Sigma Germany service. I the past, they have been very friendly and helpful to me. Thanks to all who replied to my questions. I was really amazed how fast I got the answers and all the helpful tips. Cheers, Marco -------------------------------------- Marco Kost Freier Journalist - Text und Bild Otto-Mair-Ring 5 D-83607 Holzkirchen Email: [EMAIL PROTECTED] Tel.: 08024/47 41 55 Mobil: 0179/1189113 www.mountains-and-more.de ------------------------------------- * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
