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External structure of the lens
2024-04-23
The visible part of a lens, we call it external structure, usually have, including zoom ring, focus ring, focus mode switch and so on. Of course, on the shell of the lens, the focal length, aperture, aperture and other parameters of the lens will be marked in detail. These are also the most direct way for you to know a lens.
Focus ring: when MF is manually focused, it can be rotated to adjust whether it is focused or not.
Zoom ring: Turn to adjust the focal length of the lens, which is "commonly known" zoom in and zoom out
Focus indicator window: display focus data
Focus mode switch: switch between manual and auto focus (there may also be an anti-shake switch, etc.)
Lens thread and hood bayonet: located in the front group of the lens, the thread can be screwed with the filter, and the bayonet can fix the hood
bayonet and contact: the bayonet is used to connect with the fuselage, and the contact is responsible for the transmission of shooting data
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