Zone System Reference Charts

Briar Patch Test Site

Zone	RGB Values	% White	Hex Code	f/stop	Shutter Speed	Comments
0	0-0-0	0%	000000	f/8	1/4000
I	8-8-8	3%	080808	f/8	1/2000
II	17-17-17	7%	111111	f/8	1/1000
III	38-38-38	15%	262626	f/8	1/500
IV	71-71-71	28%	474747	f/8	1/250
V	127-127-127	50%	7F7F7F	f/8	1/125
VI	187-187-187	73%	BBBBBB	f/8	1/60
VII	232-232-232	91%	E8E8E8	f/8	1/30
VIII	255-255-255	100%	FFFFFF	f/8	1/15	Digital Threshold for Doubled Exposure Values
IX	255-255-255	100%	FFFFFF	f/8	1/8
X	255-255-255	100%	FFFFFF	f/8	1/4

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