View Full Version : 300 mm PL mount math formula to 2/3" lens for preproduction


Sam Lee
April 23rd, 2013, 08:36 AM
I'm planning to do a mix format shooting w/ Super 35mm & 2/3" sensors. Does anybody know what's the 300mm (The $42K Fujinon 85-300/T2.9 PL Cabrio w/ servo zoom) equivalent to 2/3" in actual focal length?

I'm very familiar w/ the typical 22x lens (7.3mm - 171 mm) in 2/3". Just don't know the formula of a 300 mm lens on a Super 35mm sensor Sony and the Red Epic bodies. If formula is not available, is the 85-300mm roughly equivalent to a 18x (7.8 to 120mm) or 22x (7.3 to 171 mm) in the 2/3" world?

Edward Carlson
April 23rd, 2013, 09:42 AM
1200mm

35mm Equivalent Focal Length Calculator (http://www.digified.net/focallength/)