Hood, is installed in the photographic lens, digital camera and the front of the camera, blocking harmful light device, is one of the most commonly used photographic accessories. Hood with metal, hard plastic, soft and other materials. Most of the 135 lenses are standard hood, some lenses need to buy another. The hood models for different lenses are different and can not be used interchangeably. Hood for the visible lens is an indispensable attachment!
Strictly speaking, the hood is an integral part of the lens optical system. A lens is composed of several or ten pieces of lenses. And each lens will have two reflective surface, a lens there are dozens of reflective surface! The more the reflection surface of the lens imaging the greater the impact! Especially in the backlight or side backlighting, the multiple reflections will interfere with each other to form a halo. The halo will make the picture
Hood
Colorful (color unsaturation) or flare. Sometimes the picture is like a layer of mist on the mask, in fact, this is not caused by the use of hood, but not the quality of the lens! The inner wall of the high quality hood is subjected to multiple matting. The reflectivity of its inner wall is only about 10%, the use of the lens itself will not produce refraction. Use the hood to suppress the halo of the screen, to avoid stray light into the lens, blocking rain and snow splashing, protect the camera and the lens from accidental collision, for the full play the potential quality of the lens will play a good role and effect.
use
In outdoor photography should try to use the hood, which is to improve the quality of shooting is very useful. Under the same test conditions (side backlight, vision) made a set of tests. Use both the hood and the two groups that do not use the hood to shoot. Among them, a group of screens using a hood is larger than that of a group of screens that do not use a hood! Performance: the use of a group of screens in the upper right corner of the sky part of the halo disappeared, the screen color saturation and clarity have improved significantly.
The effect of the hood is to suppress the stray light into the lens to eliminate the mist, improve the imaging clarity and color reproduction, the main purpose is as follows:
1, in the backlight, side light or flash photography, to prevent non-imaging light into, to avoid fog;
2, in the light and side light photography, you can avoid the surrounding scattered light into the lens;
3, in the light photography or night photography, you can avoid the interference of light into the lens;
4, the hood can also prevent accidental damage to the lens, but also to avoid finger touch the lens surface, and to some extent for the lens to block the sand, rain and snow.
Hood is widely used in backlight photography, in general, to avoid glare. However, if the light source distance, there may still be glare phenomenon, this time you can hand on the side of the light source to block the hood, glare is eliminated, you can directly observe the effect in the viewfinder. In addition to the optical quality of the lens itself, the role of the hood is very obvious, no use of the hood image regardless of color, sharpness and contrast are not ideal, and the use of the hood of the picture in these areas have a good performance, Small hood, the effect is very different.
Hood
Colorful (color unsaturation) or flare. Sometimes the picture is like a layer of mist on the mask, in fact, this is not caused by the use of hood, but not the quality of the lens! The inner wall of the high quality hood is subjected to multiple matting. The reflectivity of its inner wall is only about 10%, the use of the lens itself will not produce refraction. Use the hood to suppress the halo of the screen, to avoid stray light into the lens, blocking rain and snow splashing, protect the camera and the lens from accidental collision, for the full play the potential quality of the lens will play a good role and effect.
use
In outdoor photography should try to use the hood, which is to improve the quality of shooting is very useful. Under the same test conditions (side backlight, vision) made a set of tests. Use both the hood and the two groups that do not use the hood to shoot. Among them, a group of screens using a hood is larger than that of a group of screens that do not use a hood! Performance: the use of a group of screens in the upper right corner of the sky part of the halo disappeared, the screen color saturation and clarity have improved significantly.
The effect of the hood is to suppress the stray light into the lens to eliminate the mist, improve the imaging clarity and color reproduction, the main purpose is as follows:
1, in the backlight, side light or flash photography, to prevent non-imaging light into, to avoid fog;
2, in the light and side light photography, you can avoid the surrounding scattered light into the lens;
3, in the light photography or night photography, you can avoid the interference of light into the lens;
4, the hood can also prevent accidental damage to the lens, but also to avoid finger touch the lens surface, and to some extent for the lens to block the sand, rain and snow.
Hood is widely used in backlight photography, in general, to avoid glare. However, if the light source distance, there may still be glare phenomenon, this time you can hand on the side of the light source to block the hood, glare is eliminated, you can directly observe the effect in the viewfinder. In addition to the optical quality of the lens itself, the role of the hood is very obvious, no use of the hood image regardless of color, sharpness and contrast are not ideal, and the use of the hood of the picture in these areas have a good performance, Small hood, the effect is very different.
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