Because of the smaller format of DSLRs, telephoto lenses have a narrower angle of view than the same lens on a 35mm camera – this is the so called ‘crop’. Angle of View is simply that viewing angle which fills the frame (of any format). This determined by the film format in relation to the focal length of the lens – not the focal length on its own.
The image circle created by a 35mm format lens is shown.
The blue rectangle shows what a 35mm film, or a full-frame digital SLR will record.
The inner red frame shows what a digital SLR with a 1.6X magnification factor will record
The image circle created by a 35mm format lens is shown.
The blue rectangle shows what a 35mm film, or a full-frame digital SLR will record.
The inner red frame shows what a digital SLR with a 1.6X magnification factor will record
