As Paul Wasserman once said, > FYI, Tripod detection is a completely separate issue from the 2 IS > modes. It was not implemented in older IS lenses (like my 100-400 :<). > IS Mode I corrects both vertical and horizontal motion. IS Mode II only > corrects motion in one direction, so that you can use IS while panning. > Neither inherently do tripod detection.
I had been arguing this point with a friend just yesterday and to clarify what Paul said, there are different "revisions" of IS (like the 100-400 and 75-300 which are older vs. the 70-200 and 70-300 which are newer) which are sometimes referred to as v1 and v2 and provide differing numbers of stops of shutter speed improvement. Perusing the manual carefully, it does mention that the 70-200 does automatically detect when you're using a tripod *BUT* recommends that you turn it off when using a tripod for two reasons. The first being that you're simply wasting battery power for nothing and the second that leaving the IS on for longer exposures can introduce errors. So regardless of lens, it probably is a good habit to just turn it off. > Paul Wasserman -/\/ * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
