By Andrew S. Gibson – the author of Understanding Exposure: Perfect Exposure on Your EOS Camera (currently 36% off at SnapnDeals).
Over the years that I’ve worked as a photography writer I’ve noticed that people keep asking the same questions about exposure on their EOS cameras.
One of the most common is why doesn’t the camera get the exposure right every time?
This is a reasonable question. Modern digital SLRs are advanced machines with built-in microprocessors that can handle complex calculations. So just why do they get exposure wrong?
Part of the reason is that the light meter inside a camera measures reflected light. If a scene is darker or lighter than average, the camera may return an incorrect reading.
But think about this for a moment. Who gets to say …