Function of flash filter

1, flashlight filter function: the blue filter makes the light emit blue light, and the blue light turns red to black, which can be used for blood test and wild hunting; The red filter transmits red light with strong penetrating power, and can also be used in foggy days. It is said that some animals are not sensitive to red light, which is beneficial to sneak attack when hunting.

2. Filters are the cheapest accessories that can obviously change the appearance of photos.

Filters have the function of filtering light and playing the role of "seasoning" in photography creation. If you can use filters flexibly, you can improve the performance of photographic works. Using filters in black-and-white photography can change the tone of the scene and make the photo closer to nature. The use of filter in color photography can change the color temperature of light source, the color of the subject or play a special visual effect.

A filter is actually a piece of glass or plastic placed in front of the camera lens when shooting. There are many kinds of filters, which can be basically divided into several categories: some filters can be used to correct the appearance of photos, others can be used to enhance the effect of photos, and special effects filters can completely change the appearance of photos.