A variety of color filters used for black and white photography.Because photographic emulsion is sensitive to violet light of basket, yellow filter can absorb part of violet light of basket, so it is widely used.Suitable for scenery, sky, portrait and other subjects.The color factor of yellow filter is usually between 1X-2X.
1. The yellow filter passes through yellow in color photography, preventing red and green light from passing through.The result is a transparent yellow film.
2. Principle of use of filter: same color pass, different color resistance.