Introduction course of canon 550d SLR camera

The usage skills of Canon 550D are as follows:

1, lens loading and unloading mode: the connection between the SLR lens and the fuselage is realized by something called a bayonet, usually three knives inside or three knives outside. In order to prevent the lens from falling off the fuselage, there is a locking tenon. Different cameras produced by different manufacturers have slightly different positions and operation methods of locking devices, which leads to different lens loading and unloading. For example, Nikon's F bayonet is equipped with three internal knives rotating counterclockwise, while Canon's EF bayonet is equipped with three internal knives rotating clockwise, and the initial position of the positioning point is different when the lens is inserted.

2. Be careful when installing the lens, and be more careful when disassembling the lens. The lens must be vertical when it is pulled out, otherwise it will not only be difficult to pull out, but also damage the lens barrel or the bayonet of the fuselage. When rotating the lens, your hand should hold the lens barrel, not the aperture ring, focus ring or zoom ring. When installing the lens, aim the red dot on the lens at the red dot on the fuselage, then insert it, rotate it to the end according to the required direction, and hear the locking "click" sound.