There are two ways for cameras to measure the distance to an object: they can fire a beam of infrared light at it and measure the time it takes to return, or they can look at contrast differences in a small area of the object and adjust the lens until you maximise the difference. The former system was common in early compact digital cameras and may still be found in many camera-phones. The latter has always been popular in DSLRs and is becoming increasingly common in digicams, particularly the more advanced models. Many modern cameras combine both systems.
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Photo Review Jun-Aug 2020 Issue 84 – The intimate wildlife images of Charles Davis; Sean Davey’s small moments project; Head On Photo Festival 2020; Japan Art Islands; How to make the most of available light; The quest for long-lasting prints, and more…Read More