On Mon, 31 Mar 2003 19:54:49 -0500, you wrote: >Now, the remaining issue is- even though you get solid lock down and >have IS - how about vibration induced by mirror slap? The pundits go >both ways on this (Fritz Polking is one of them). I could be wrong, but >I believe mirror "lock up" at shutter speeds between 1/60 and 1/15 of a >second finishes slightly, but very slightly better than IS. I've been >using IS only at those speeds and had no complaints regarding image shake.
Interesting - I hadn't heard of it going as high as 1/60 - more right around 1/15. I also suspect that the degree of unsharpness one is down to at this point might only be visible in very large enlargements. There's also the technique of damping the top of the lens with one hand, so that a "standing wave" doesn't get set up. The mirror slap shock travels outward and doesn't come back to jar the exposure. According to Moose Peterson, anyway. Makes intuitive sense to me. Ken * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
