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.
OM-1n & Rolleicord Va.