Playing around with my 430ex, I found I can have an extremely fast shutter speed (1/4000) on the hot shoe with no issues (manual mode). However, when I put the strobe off camera via cactus V4s, I have issues (see below) anything faster than 1/200. Is 1/200 the fastest shutter speed I can get with the 450D?? Settings Strobe: 1/8 power at 24mm, manual mode. Camera (all images): ISO100 50mm f/5.0 1/200, 1/250 1/320, 1/400 Edit: does this belong in the beginners section?