A week in photography

Considering ISO is part of the ‘holy trinity’ of good exposure, along with setting the right aperture and shutter speed, it’s surprising that it doesn’t get talked about more. So we’ve redressed the balance in this issue detailing some of the key points of effective ISO usage. There’s some superlative hardware too, including a full review of the Olympus OM-D E-M10 III, an easy-to-use powerhouse that is a perfect introduction to mirrorless, and a round-up of keenly priced but high-quality compacts. They make perfect backups or even main cameras if you are tired of lugging heavy SLRs around. Nigel Atherton, Editor