Unwanted fluctuations in intensity in an image. These are caused by a number of factors, such as the random nature of light, the heat of the sensor and any sensor defects, and is more problematic at higher sensitivities.
On sale: 26th Sep
Following the recent Photokina expo, we've recently laid hands on two exciting new DSLRs, the Canon EOS 7D Mark II and the Nikon D750. Not only do we also have many more accessory reviews, and head to heads of advanced compacts, but also in our 12-page technique section, we offer top tips on how to refine your portraiture skills, and reveal all on the subject of aperture.
Which of the new cameras announced so far this year are you most excited about?
It may take 15 minutes for the system to update.