The home of Professional Cinematographers since 1996

Blue & Green Screen tests

The grey scales in each shot were matched, the ones with green backing had a much higher flare content and were much harder to balance to a neutral grey. This is why the black levels are so high.

The exposure readings are from a Pentax spotmeter reading the foreground and background grey cards.

There was much less flare and spill from the blue screen than from the green, the midtones of the green shots was severely effected.

The finished commercial is at the bottom of the page



screen tests 1.jpeg (49683 bytes)


 

Foreground-----9------Background-----8.3

Area-----------R------------G-------------B

White--------253----------254----------249

Grey---------145----------143----------140

Black-----------2------------7-------------2

Grey patch-----3-----------48----------254
lit with Blue

Blue Screen----7------------20---------255

screen tests 2.jpeg (46435 bytes)

Foreground---------9--------Background-----7.66

Area---------------R------------G-------------B

White-----------250----------241----------245

Grey------------146----------146----------156

Black-------------3-------------3-------------3

Grey patch-------6------------16-----------253
lit with Blue

Blue Screen------7-------------3-----------229

screen tests 3.jpeg (47323 bytes)

Foreground---------9--------Background-----6.66

Area---------------R------------G-------------B

White------------254----------255----------233

Grey--------------141----------139---------140

Black---------------3-------------7------------1

Grey patch---------5-------------8-----------209
lit with Blue

Blue Screen--------3-------------4----------165

screen tests 4.jpeg (47018 bytes)

Foreground---------9--------Background-----8.3

Area----------------R------------G-------------B

White-------------252----------237----------243

Grey--------------146----------139---------139

Black--------------18-------------1------------28

Grey patch--------39-----------194----------102
lit with Green

Green Screen-----46----------255-----------70

screen tests 5.jpeg (49911 bytes)

Foreground---------9--------Background-----7.3

Area----------------R------------G-------------B

White-------------252----------254----------255

Grey--------------142----------130---------151

Black--------------29-------------0------------31

Grey patch--------37-----------143-----------78
lit with Green

Green Screen-----45------------225----------68

screen tests 6.jpeg (47843 bytes)

 

Foreground---------9--------Background-----6.3

Area----------------R------------G-------------B

White-------------253----------250----------251

Grey--------------148----------147----------142

Black--------------24------------28-----------32

Grey patch--------36------------98-----------51
lit with Green

Green Screen-----35-----------169-----------47

Link to finished commercial, it's a large file, be patient