On Thu, 12 Jan 2006 08:47:11 +0100, Markus Proske <[EMAIL PROTECTED]> wrote/replied to:
>It does not make much sense comparing tele lenses at F8. The Canon >delivers excellent results at F2.8, die Sigma has 4.5 or 5.0 in the >comparable lengths (which is rather slow). It is difficult to optimize >lenses for open aparture, so testing the Sigma at 4.5 or 5.0 would have >been more interesting than stopped down. Furthermore, shoothing tele you >mostly lack speed (think of moving subjects) or want a nice blur. Tele >lenses stopped down - well yes, sometimes but I do not believe this is >the general case. Agreed, never enough light or aperture! Not to mention that IS is a must have for any tele. I shoot the 100-400 L IS and shoot it wide open most of the time (often with a 1.4x heh heh) and crank up my ISO many times to get enough shutter speed. So without the IS I'd get many more blurry shots or crank my ISO even more and get noisy shots. What a luxury it would be to stop down to f8 and shoot at ISO 100 while holding a decent shutter speed but it ain't going to happen. Maybe if I can get a noise free camera body at ISO 1600 one day I can shoot at f8! I might add that I often shoot in early morning or on dull days. How many people shoot at mid day on a sunny day? Not bird shooters. -- Jim Davis, Owner, Eastern Beaver Company: http://easternbeaver.com/ Motorcycle Relay Kits, Powerlet, Posi-Lock, Parts, Info, Photos K100RSes on both sides of the planet! * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
