Your camera's metering system is responsible for analysing the scene and judging what settings would capture it best. Get your exposure spot on every time with this photography cheat sheet.

In our infographic below you can see just how much of a scene your camera can capture at different focal lengths starting from an ultra-wide 10mm all the way up to 400mm.

In the latest of our Photography Cheat Sheet series we've come up with what we believe are four of the trickiest conditions for shooting family portrait photography.