Quote Originally Posted by Once View Post
Oh, oh - slow down, please. Where do you have that from? Surely not from an experience. Do you realise it is not correct, neither for the length nor for the difference made?
Do you have first hand experience that it is not correct? If so, I'm curious about your testing methodology. I too was skeptical of the importance of a hood until I saw this test by Robert Zeichner (a forum member) titled "Can better shades improve lens performance?".

http://web.mac.com/razeichner/RAZP_l...hade_pg_1.html