I’ve been shooting with Canon SLRs for a long time, and for the most part, I’ve always been pleased with the camera’s metering. Granted, I can never remember which icon corresponds to which metering mode, but now that I keep the PDF of the manual on my phone, I can always look it up. During a recent shoot, though, I came across a curious detail about Evaluative metering that I never knew – one that can dramatically alter metering behavior in certain situations.