![]() ![]() Smartphones are in a league of their own, and usually have small sensors of the type 1/n”. A complete list of sensor sizes can be found here. A cropped sensor captures less light than a full-frame (which has larger photosites which are more sensitive to light).Ī list of the most common crop-sensor sizes currently used in digital cameras, as well as the average sensor sizes (sensors from different manufacturers can differ by as much as 0.5mm in size), and example cameras is summarized in Table 1.A cropped sensor captures less of the lens image circle than a full-frame.To get a similar AOV on the cropped sensor APS-C, a 33mm equivalent lens would have to be used. For example a FF 50mm lens will have an AOV=39.6°, while a APS-C 50mm lens would have an AOV=26.6°. Lenses on a crop-sensor camera with the same focal-length as those on a full-frame camera will generally have a smaller AOV.For example, a MFT camera only requires a 150mm lens to achieve the equivalent of a 300mm FF lens, in terms of field-of-view. The cost of crop-sensor cameras, and the cost of their lenses is generally lower than FF.This means cameras are generally smaller in dimensions and weigh less. Crop-sensors are smaller than full-frame sensors, therefore the cameras are generally smaller.To illustrate what happens in a full-frame versus a cropped sensor, consider Fig.1.įig.2: Viewing full-frame versus crop (APS-C) The benefits of crop-sensors The sensor does not actually cut anything, it’s just that parts of the image are simply ignored. The picture a crop sensor creates is “cropped” in relation to the picture created with a full-frame sensor (using the lenses with the same focal length). For that reason the term crop sensor is used to describe a sensor that is some percentage smaller than a full-frame sensor (sometimes the term cropped is used interchangeably). When camera manufacturers started creating sensors smaller than 36×24mm, they had to create a term which described them in relation to a 35mm film-frame (full-frame). Using a camera with a sensor smaller presented one significant problem – the field of view of images captured using these sensors was narrower than the reference 35mm standard. The first full-frame dSLR would not appear until 2002, the Contax N Digital, sporting 6 megapixels. The first commercially available dSLR, the Nikon QV-1000C, released in 1988, had a ⅔” sensor with a crop-factor of 4. In the early development of digital sensors, there were cost and technological issues with developing a sensor the same size as 35mm film. ![]() Everything in analog photography had the same frame of reference (well except for medium format, but let’s ignore that). Before the advent of digital cameras, the standard reference format for photography was 35mm film, with frames 36×24mm in size. ![]()
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