----- Original Message ----- From: "Butch Black" Subject: metrics question
The sigma is GN 50m @ 100ASA, 105mm zoom reflector setting. The Pentax one is GN 54m @ 100ASA, doesn't say what zoom that's at.If you multiply by 3 do you roughly get your guide numbers in feet?
More or less. A meter is actually 39 and a bit inches. William Robb
