What is the minimum (slowest) appropriate shutter speed for hand-holding a digital SLR with sharp (at least to the common man's eye) image? I'm using a Canon 350D
- no IS / Optical stabaliser
- no USM / HSM
- ISO 100-200
- decently weighted lens (weight of a 70-300mm Sigma)
Does minimum shutter speed also depend on: Focal Length (i.e. Zoom)? Aperture size? or any other parameters?
Cos I find some of my images at 1/60s shutter speed becomes blurred. Anyway that I can improve my technique of shooting?