Forum: Photography


Subject: Technical: How is the "speed of a lens" calculated? Just curiosity asking.

TomDart opened this issue on Aug 23, 2005 ยท 7 posts


DJB posted Tue, 23 August 2005 at 9:17 PM

Well you got my interest up on that too so I go searching all over to read anything I can. Did not think it was exactly what you want, but maybe has some links avail too.

"The happiness of a man in this life does not consist in the absence but in the mastery of his passions."