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APS-C sensor

This is the most common sensor size in cameras designed for enthusiasts and experts and it's found in consumer DSLRs, mirrorless compact system cameras and some high-end compacts. APS-C sensors are around half the size of a full-frame sensor or the 35mm negative, and measure approximately 24 x 16mm. They have a crop factor of 1.5x, which means that you have to multiply the lens's focal length by 1.5x to get its effective focal length in 35mm/full frame camera terms.

Focal length vs ‘effective’ focal length

August 25, 2019 by Rod Lawton

Lenses are always identified by their focal length. It’s not just a physical measurement, it’s an indication of the type of lens it is, for example, a wideangle lens, standard lens, telephoto and so on. In other words, the focal length of the lens gives you an indication of its angle of view. Or at […]

Camera types and what they do

August 23, 2019 by Rod Lawton

If all you want to do is take pictures and you don’t know much about cameras, the range of camera types on the market is bewildering. Even if you do know a bit about cameras, it’s not easy to weigh up one type against the other and make a decision about which to get. So […]

Sensor size and why it matters

August 14, 2019 by Rod Lawton

In the days of film, it was well understood that the bigger the negative, the better the quality of the picture. The same is true with digital cameras, only here the ‘negative’ is the sensor. The larger the sensor size, the better (generally) the picture quality. Megapixels do confuse the issue somewhat because you can […]

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