WB and exposure

Dario Bonazza dario.bonazza at virgilio.it
Thu Oct 1 17:04:07 EDT 2009

Following the discussion about exposure and WB, I was skeptical that WB
setting could affect exposure metering, as in a SLR the meter cells are
independent from the sensor. So I've tested it on my K20D.
I've taken three Av exposures in tungsten light (one with Auto WB, another
one with Daylight WB and the last one with Tungsten WB). As expected,
shutter speed was the same and the histograms of the three shots look 


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