Traditional Culture Encyclopedia - Photography major - How to zoom a SLR camera

How to zoom a SLR camera

Zoom in through the lens. Not all lenses can be zoomed. Only zoom lenses are available. SLR lenses can be divided into fixed-focus lenses and zoom lenses if they can be zoomed or not. The ferrule of 550D is generally a standard zoom lens of 18~55mm, which can zoom. Because 550D is an APS-C format camera, Canon EF series general lens and EF-S series APS-C format special lens can be used. The applied lens coefficient is 1.6, and the actual focal length of the 18~55mm lens on this camera is 28.8 ~ 88 mm.