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Leica metal Luo air hood
The hood is set in front of the camera used photographic accessories, metal, hard plastic, rubber and other material. It has the following functions:
1 in the light, side light or flash photography, can prevent the non imaging light to enter, to avoid the mist.
2 in the light and side light photography, can avoid the scattered light into the lens.
3 in the light photography or night photography, can avoid the interference of light entering the lens around.
4 can prevent accidental damage to the lens, can also avoid finger contact lens surface, wind, rain and snow can block for the lens to some extent.
The hood has a variety of sizes, should choose the focal length of the lens is matched with the kind of. The shorter the focal length, angle is bigger, hood is short. Such as the hood set of standard lens in the wide-angle lens to use, will produce the picture around the consequences of not imaging. On the contrary, it can not play its due role shading strokes. Use the zoom lens, preferably with self use telescopic lens hood. The hood is widely used in backlight photography, in general can avoid glare. However, if the light source is close, there is still likely to occur the phenomena of glare. At this point, you can block the hood at the side of the hand lamp. Glare is eliminated, from the viewfinder to observe clearly.