> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Marco Kost > Sent: Tuesday, October 07, 2003 3:07 AM > To: [EMAIL PROTECTED] > Subject: EOS Sigma 2.8-4/17-35 HSM > > > Hello Everybody, > > I just arrived back from a Trip to the Canadian Rockies some days ago. > Yesterday, I got back my slides from processing and found out that my > wide angle lens Sigma 2.8-4/17-35 HSM shows a strange behaviour: Some > of the slides were completely overexposed, so that hardly anything was > visible. Some were exposed correctly. Now I remember that once my EOS > 1V showed a "00" in the display as no lens would be attached to the > body and the lens didn�t react when I touched to shutter release > button. I didn�t worry at that moment, as this disappeared after > switching off and on the camera. So, now it seems that there definitely > has been a severe problem with the lens. The slides that I have been > shooting with my other lens, the 2.8/70-200 USM IS were are completely > okay. > > So I wonder if anybody on the list ever heard of such a problem. I > guess that the lens didn�t stop down correctly and instead I was > shooting wide open while I was thinking to shoot with f11. Is this a > general lens problem, or might this be a temporarily problem? > > Any help is highly appreciated! Thanks in advance, > Marco > > >
Hi Marco, 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. Cheers/Chip * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
