Gamma function tests

by Billy Biggs <vektor@dumbterm.net>

The following images were generated to try and test how close my monitor is to various gamma standards. The left hand side of each image is a repeating pattern of pure white and black pixels:

    [ BLACK  WHITE ]
    [ WHITE  BLACK ]
    

The right hand side is half-intensity grey according to each standard. They should look close to identical in a properly configured viewing environment for that standard.

sRGB Gamma Curve

pow( value, 0.45 )

Rec.709 Gamma Curve

No gamma correction

The following tests to see if there is a surround effect when testing gamma plates.

sRGB Gamma Curve

[ICO]NameLast modifiedSizeDescription

[PARENTDIR]Parent Directory   -  
[DIR]old/ 2003-08-25 11:33 -  
[IMG]halfblue-pow0.45.png 2003-08-25 11:33 271  
[IMG]halfblue-rec709.png 2003-08-25 11:33 271  
[IMG]halfblue-srgb.png 2003-08-25 11:33 271  
[IMG]halfgreen-pow0.45.png 2003-08-25 11:33 271  
[IMG]halfgreen-rec709.png 2003-08-25 11:33 271  
[IMG]halfgreen-srgb.png 2003-08-25 11:33 271  
[IMG]halfred-pow0.45.png 2003-08-25 11:33 271  
[IMG]halfred-rec709.png 2003-08-25 11:33 271  
[IMG]halfred-srgb.png 2003-08-25 11:33 271  
[IMG]half-none.png 2003-08-25 11:33 273  
[IMG]half-pow0.45.png 2003-08-25 11:33 274  
[IMG]half-rec709.png 2003-08-25 11:33 274  
[IMG]half-srgb.png 2003-08-25 11:33 274  
[IMG]medium-halfblue-srgb..>2003-08-25 11:54 1.1K 
[IMG]medium-halfgreen-srg..>2003-08-25 11:54 1.1K 
[IMG]medium-halfred-srgb.png2003-08-25 11:54 1.1K 
[IMG]medium-revhalfblue-s..>2003-08-25 11:59 1.1K 
[IMG]medium-revhalfgreen-..>2003-08-25 11:59 1.1K 
[IMG]medium-revhalfred-sr..>2003-08-25 11:59 1.1K 
[IMG]medium-half-srgb.png 2003-08-25 11:54 1.1K 
[IMG]medium-revhalf-srgb.png2003-08-25 11:59 1.1K 
[IMG]gamma709.png 2003-08-25 11:00 2.3K 
[IMG]large-halfblue-srgb.png2003-08-25 11:55 2.9K 
[IMG]large-halfgreen-srgb..>2003-08-25 11:55 2.9K 
[IMG]large-halfred-srgb.png 2003-08-25 11:55 2.9K 
[IMG]large-half-srgb.png 2003-08-25 11:55 3.0K