RE: Lens Hoods - know your worst case

[J. C. O'Connell]

Correction, the worst case for hoods ( most likely
to cause vignetting) is not close focus and small
apertures, it is with lens at infinity (widest angle
of view) and wide open ( optical path closest to
hood). It seems to me a common myth that stopped way
down and lens set to mimimum focus would be worst
case but that's backwards....
jco