If you want a zoom, the biggest-sized sensor is APS-C which under half the size of full frame. But if you want a big zoom in a pocketable camera, then you will need a model with a 1in sensor (about a third of the size of an APS-C sensor). An MFT sensor is smaller than an APS-C sensor, but bigger than a 1in one. How we test compact cameras
An APS-C sensor will have more pixels doing the imaging than the middle part of full frame sensor in crop mode. A full frame in crop mode will actually have a lower resolution than a native crop camera, unless you're talking about something like the R5 which has a crazy high number of pixels from which to carve out the middle for crop mode.
So the 18-55mm lens on APS-C Canon body would be 28.8-88mm. The general rule of thumb for shooting interiors is you need at least a 24mm lens and most real estate shooters use a zoom lens that can get in the range from 16mm to 24mm. This is why tilt-shift lenses are frequently 24mm and the popular lenses for full frame DSLRs are 16-35mm or 17
At the time I bought my APS-C camera, full frame mirrorless cameras were also available. I have always been a sharpness freak, and the Sony a7R III really caught my eye in particular. But I
APS-C. Drawing showing the relative sizes of sensors used in most current digital cameras. Advanced Photo System type-C ( APS-C) is an image sensor format approximately equivalent in size to the Advanced Photo System film negative in its C ("Classic") format, of 25.1×16.7 mm, an aspect ratio of 3:2 and Ø 30.15 mm field diameter.
Today, the cheapest full frame cameras with latest sensor technology start at $2000. However, APS-C cameras with similar sensor technology and megapixel (24 MP, BSI, full phase detection coverage etc), have a significantly lower price tag. And when Full Frame tries to match high end APS-C camera pricing, it does it at the expense of feature
Canon's White Paper on Full Frame sensors for DSLR cameras clearly states that the larger pixels on a Full Frame sensor gather FIVE Times as much light that an APS-C sized sensor is capable of capturing. (see page 5). The Illustrations that Canon provide demonstrate much larger sensor cells and how they gather More light in Less exposure time.
They’ve compared medium format, full-frame, APS-C and Micro Four Thirds, in a side-by-side shootout—taking identical photos and making large prints to see how the image quality and dynamic
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full frame vs aps c camera