skippyfetus
Carbonite Member
In reference to the Z focal legth chart (it's here http://www.dvxuser.com/cgi-bin/DVX2/YaBB.pl?board=Events;action=display;num=1081605832;start= if you don't remember), how do you come up with the focal lengths at each of the Z numbers? What's the formula? Or is there an online calculator? It's not that important, but it would be useful to not have to look at the zoom ring and guess when trying to shoot a focal lenth.