How about a motion detector that works by the change in distance of focus?That way you could set it to the range you like.This way it could also work with my 400d.I bet you could write it in just a few lines of code.
Started by fudgey
MX3's (motion detection) Builds
Started by Stimpy
Started by kidtree
Started by lapser
General Discussion and Assistance
Started by Indizacam