Economical practical, rubber material manufacturing, telescopic
There are various textures such as metal, hard plastic, soft glue, etc., and have the following effects:
1. When photographing, lateral light or flash photography, it is possible to prevent the incoming image of light and avoid fog.
2. When photocporting in the smooth and lateral light, the surrounding scattered light can be avoided into the lens.
3. When photography or night photography, you can avoid the surrounding interference light into the lens.
4. Can prevent accidental damage to the lens, can also avoid fingers to touch the lens surface, and can partially cover the sand, rain and snow to some extent.
There are many sizes of the hood, and the focus of the focal length of the lens should be selected.The shorter the focal length of the lens, the larger the perspective, the shorter the hood.If the shading cover of the standard lens is used on the wide -angle lens, it will inevitably produce the consequences that cannot be imaged around the picture.Conversely, the role of shading should not be played.When using a zoom lens, it is best to use the gloss hood that can be used by the expansion.
The hood is widely used in backlight photography, which is generally avoided. However, if the light source is close, it is still possible to make glare. At this time, the hood can be blocked by hand on one side where the light source is located. Whether the glare is eliminated, it is clear from the viewfinder.