Checkerboard Contrast Calculator

Projector A
:1 FOFO contrast ratio (full on / full off)
:1 ANSI contrast ratio (100% checkerboard)
gamma (exponent)

Projector B
:1 FOFO contrast ratio (full on / full off)
:1 ANSI contrast ratio (100% checkerboard)
gamma (exponent)

room gain (reflectivity)
% screen area covered by checkerboard



Checkerboard
(editable)
Projector A
Projector B
"White"
"Black"
Contrast
"White"
"Black"
Contrast
% % % :1 % % :1
% % % :1 % % :1
% % % :1 % % :1
% % % :1 % % :1
% % % :1 % % :1
% % % :1 % % :1
% % % :1 % % :1

The Checkerboard percentage is the stimulus (or signal level) of the white rectangles. The black rectangles always have 0% stimulus. The "White" and "Black" percentages represent the illumination of the rectangles and are relative to 100% "full on" illumination. The gamma curve is a power function that takes the black-level error into account, so it is not a pure power function. The calculations are based on a theoretical model. Actual results may vary.

This web page was created by Erik Garci.