Image from a 1.3x sensor camera (Canon 1D series). Image from a 1.5x sensor camera (Nikon DX digital). Image from a 1.6x sensor camera (Canon consumer digital SLRs). Calculations. Multiply a lens' focal length by a camera's factor to get the focal length of a lens which, when used on a full-frame or 35mm film camera, gives the same angle of
Crop Factor. Crop factor refers to how much the sensor will cut from a scene compared to the standard 35mm frame of a full frame camera. A crop factor of 2 means a 35mm frame is twice as big and a crop sensor will capture half of what a full frame camera will capture. Every camera’s crop sensor is different, so be sure you check your camera A smartphone sensor thus has a diagonal 6× smaller than for full-frame DSLRs, and a surface area roughly 36× smaller (“roughly” because they can have different ratios of sides). Meanwhile in medium-format and larger cameras, the sensors are larger than full-frame and thus have a crop factor of less than 1 (typically from 0.5 to 0.8).The big difference between full-frame cameras and crop-sensor cameras that share a similar resolution is the size of the pixels. The pixels on the full-frame sensor are larger, and this allows for more efficient light gathering. The upshot is cleaner, better-quality images at high ISO settings. TOP TIP
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