I would like to know the front of the SLR camera lens
Hood can also play a role in protecting the lens. Set the hood of the lens, you can block the finger to prevent it printed on the lens, but also collision effect. It can be said that this is only a side effect. Hood on the lens of the protective effect is actually better than the UV mirror, because the UV mirror will certainly affect the quality, and hood in the specific conditions can also beautify the quality. Therefore, in the recommendation of others to buy the camera, I often recommend them to buy a hood instead of UV mirror, unless the match is a very good lens.
The purpose of the hood is to cover the lens outside the perspective of the stray light, making the scene when the scenery is more pure. This effect is very significant in the back light shooting, with a lens shot out of the photos, no use of the image of the hood like a layer of white, and the use of the hood image will be relatively pure. SLR camera as a system, the hood is actually an indispensable part.
Is called a hood.
???????? Hood with barrel and petal-shaped, wide-angle lens hood is generally barrel-shaped; standard lens, medium, telephoto lens hood are barrel-shaped.
