We’ve mentioned in previous posts how in-camera metering can be very unreliable. It can meter the scene differently even if the subject and lighting do not change. In the series of photos below, I left the camera at evaluative mode and took three shots at different focal lengths. I shot in AV mode with the ISO at 400 at f/5.
You can see that the camera’s meter fluctuates depending on the focal length I was shooting in. This should not be the case since I’m shooting the same subject under the same light. You might think that the difference is not that big but I’ve seen cases where the meter will fluctuate to almost a full stop depending on where you zoom in.
