# How to find SBR

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• 01-31-2013, 03:35 PM
cowanw
Each EV represents all the shades between it and the next highest number. 9 represents all the shades between 9 and 10. 14 represents all the shades between 14 and 15. There are 6 such divisions of shade.
• 02-01-2013, 07:24 AM
Usagi
I have learn that SBR is highlight reading - shadow reading + 5. Thus shadow reading 9 and highlight reading 14 would be SBR 10.

The incident meter value is average of apr. 5 stop range. So shadow value extends 2.5 stops towards dark from reading and highlight includes values up to 2.5 stop above reading.
• 02-01-2013, 08:59 AM
baachitraka
Quote:

Originally Posted by Usagi
I have learn that SBR is highlight reading - shadow reading + 5. Thus shadow reading 9 and highlight reading 14 would be SBR 10.

The incident meter value is average of apr. 5 stop range. So shadow value extends 2.5 stops towards dark from reading and highlight includes values up to 2.5 stop above reading.

True, when BTZS is employed.
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