The picture depends on the light. The incision, the quality and quantity of this changes the nuances of photography. Filters, color balance situations, retain the light spectrum and allow the passage of light only of the same color. The absorption of light in relation to the density of the filter is offset by the increased exposure.
The filters, which are crystals with different effects on the photography end. They are mounted in front of the lens by means of a screw thread called Portalibros and in some cameras with bayonet coupling. There is also a system that uses a universal framework that is coupled by a thread to the target. This is the Cokin system.
The filters can be classified in contrast to black and white, color protection, polarizer, of special effects and zoom lenses.
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