Camera skills

DoF preview

Check how much of the subject is sharp

Unless you’re working at the lens’s widest aperture (such as f/1.8 or f/2.8), you’ll need to use your camera’s Depth of Field Preview feature to ‘stop down’ the lens to what’s known as the working aperture: this will allow you to see what will be sharp and what won’t be. It’s also helpful to activate it while manually focusing.

Button it Don’t confuse the DoF (shown) button and lens release (you may be able to assign DoF to another button).