Sharp Field Depth of Field Calculator
The Depth of Field Calculator is used, in video and film production, for working out how much of a shot is in focus.
After typing in some camera settings into the calculator, like aperture and focal length, it will supply you with two distances. The nearest
distance from the camera that is in focus and the furthest
distance that is in focus.
The calculator, which is primary designed for film and video cameras rather than for stills cameras, is an application for mobile phones which I developed over the years working as a cameraman. It's has been calibrated for use on some commonly used video cameras like HDCam camcorders, Sony EX3s, the Panasonic HVX200, Black Magic cinema, Digital Bolex and the Red One and Epic.
Some features include:
- Can calcalute in imperial or metric
- Calibrated from actual tests with video cameras and camera specifications unlike other calculators which just use the commonly accepted, but approximate, values for video.
- Designed to produce pixel sharp focus.
- Fast and simple to use.
- Calculates near and far distances but can also "back-calculate" the focus distance when the user supplies either a near or far distance.
There is some instructions included in the calculator. If you've used any type of depth of field calculator before, this one shouldn't prove too much trouble to get to grips with.
This Depth of Field Calculator works on Android
mobile phones. If you work in the film or television industry, you know you shouldn't even have your phone switched on during a shoot but, with the phone turned to offline or flight mode, this calculator has proved useful for quickly working out how problematic the focus is going to be for a particular shot.
Just explain to the assistant director that you're not playing a mobile phone game!