Quote Originally Posted by OldBikerPete View Post
I calculate that a 210mm lens on my 5x4 has the equivalent effect on perspective and viewing angle as a 52mm lens for the equivalent aspect ratio centre portion on a 35mm frame.
So, stipulating that a 210mm lens is 'normal' for 5x4 (NOT 150mm as seems to be the popular conception), 210mm is my longest lens followed by 135mm, 90mm and 65mm.
So I guess I'm wide-angle.
"Normal" is designated as equal to the diagonal of the format. 150mm is the normal focal length for 4x5. 43mm is normal for 35mm. 50mm is "standard" in that it is not "normal."