So many sources claim that exposure meters are calibrated to 18% (putting aside the fact that meters aren't calibrated to reflectance). Other sources say it's 12%. This discrepancy can make a difference with certain testing methodologies. Too many simply accept the calibration percentage their chosen method uses or adopt the percentage supported by an authority figure, but I think the smart idea is to do some research on their own?
Originally Posted by AndreasT
Last edited by Stephen Benskin; 01-18-2013 at 10:52 PM. Click to view previous post history.