Kelly Cine V3 35mm Depth-of-Field Calculator. aka Kelly Wheel

The Kelly Cine V3 Calculator (Kelly Wheel) has been used by camera technicians worldwide since 1955 and is an indispensible tool for all camera assistants. Calculate Depth of field and hyperfocal distances in seconds with this easy to use tool.

Designed in association with JDC London, it is he latest in a series of indispensable tools that movie camera technicians have been using for over half a century. Catering for the Spherical and Super 35 on one side and Anamorphic on the other, the v3 covers a fully comprehensive range of the latest cine-lens sizes and apertures.

Weighs only 20g
Thickness of a credit card
Fits all pockets and pouches.
Doesn’t need batteries to function