Exposure

VIDEO Siân Lewis shows you how to photograph fireworks with your camera in this video guide

cheat sheet Discover how to get the right amount of focus in your shots every time and how changing the aperture changes the look

CHEAT SHEET Take a refresher on the role of aperture when it comes to making images and the aperture controls on your camera

Opinion We imagine our cameras are as smart as heck and for them to get the exposure right will be simple. They’re not, and it isn’t

CHEAT SHEET Shutter speed is the length of time that your shutter is open for so that light can hit the camera sensor. The diagram below shows you how the shutter works

Cheat sheet A histogram is a graph that can tell you if an image is well-exposed and whether it has clipped tones – the diagram below shows you how to interpret it

Cheat sheet You don't need your camera to tell you what the exposure is outside – you've got this!

VIDEO Use slow shutter speeds and multiple exposures to capture a series of abstract, motion-blur portraits

cheat sheet The aperture you choose doesn't just affect depth of field and exposure, it affects image resolution too