What are the commonly used color filters? What are the special effects after use?

Commonly used color filters are: glass sandwich filter and colored glass filter.

1, glass sandwich filter

The glass-sandwiched color filter is formed by bonding two colorless glasses and a colored film. Its advantages are high transparency, many grades of pigments made by chemical methods, high absorption and passing ability for various colors of light, and easy wiping and storage. Widely used in film photography and color enlargers, there are also many such filters in cameras.

The film sandwiched between two pieces of glass, such as damp or vibration, is easy to glue or deteriorate the lens; Two pieces of glass are thick when they are bonded together. If the glass is not polished well, it may also cause the focus of the lens to change and affect the clarity of the image.

2. Colored glass filter

The colored glass filter is made of colored optical glass with excellent texture by grinding. Its advantages are high transparency, thin grinding thickness, unchanged lens focus, and strong ability to absorb and pass various colors of light, even if it is wet and heated. This color filter is widely used in modern photography.

However, due to the color modulation process of colored optical glass, its various pigment grades are not as many as those of color film and glass sandwich filter.

Extended data

1, weak color filter

The weak color filter can only absorb ultraviolet light and a small amount of blue-violet light, and all other colors can pass through, so the absorption force is small and the pass rate is large. There is no obvious difference between the tone of the photo taken and the tone of the subject (except for color separation and blind color).

2. Neutral color filter

Neutral color filter can absorb most of the blue-violet light, with high absorption and slightly lower pass rate. Compared with the color tone of the shot scene, the color tone of the shot photo is natural and moderate, and the ideal effect is achieved.

3. Strong color filter

The strong color filter can absorb all the blue-violet light and only let some of the required color light pass through, with large absorption and low pass rate. Compared with the tone of the scene, the tone of the photo is in sharp contrast, and the adjustment of the color of the scene goes beyond the natural state.

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