The crop factor for Canon APS-C sensors is 1.6—that is, a 50mm lens on a crop-sensor camera gives you the same field of view as an 80mm lens does on a full-frame sensor. Other sensor formats ...

There are currently four Canon EOS R camera bodies with ... Designed for APS-C cameras the Sigma 18-50mm lens has a full-frame equivalent of 28.8-80mm, while the 10-18mm has an equivalent of ...

The taller the column, the better the lens performance. Chromatic aberration (CA) is the lens' inability to focus on the sensor or film all colours of visible light at the same point. Severe ...