Because it's an accurate representation of what your eyes see. There are some people who don't like 50mm lenses simply because they have to foot zoom but the quality is totally worth the effort
It relates to the focal length of a zoom lens - in this case 28 mm being wide angle (but noit as wide as a fish eye lens) through to medium telephoto - 80mm or thereabouts is used by 35mm SLR photographers to capture portraits. A standard lens on 35mm SLR is around the 50mm mark. Note that I have used 35mm SLR as the reference - it varies deopending on the format - I believe digital SLRs are different also.
The term "16-50mm lens" in photography refers to a zoom lens that has a focal length range of 16mm to 50mm. This means that the lens can capture a wide-angle view at 16mm and a standard view at 50mm, allowing for versatile framing options in photography.
The Canon EF won't work on a film SLR, unfortunately. It only works on DSLR cameras.
The Canon EF lens will only fit Canon SLR camera bodies, unfortunately.
A 50mm lens has a diopter of 20.
The Canon 50mm lens is used mainly by the Canon EOS line of Cameras, since they have an EF Mount which is designed to fit this range. They do also fit other Compact SLR cameras however due to the fact their mounting is similar to that used by most cameras.
The field of view of a lens with a 50mm focal length equivalent on an APS-C sensor camera is narrower than a standard 50mm lens on a full-frame camera, due to the crop factor of the APS-C sensor.
Canon makes the best 50mm camera lens, known as the EF 50mm f/1.8mk2, 50mm f/1.4 USM and 50mm f/1.2L lenses
The price of a Canon 50mm lens typically ranges from 125 to 150.
The filter size for the Nikon 50mm 1.8 lens is 58mm.
The recommended focal length for achieving a standard field of view on a DX-format camera when using a lens with a 50mm focal length is around 35mm.
SLR is Single lens Reflux.