Red 23A Screw-In Filter Size:55mm and grinding flat to a

and grinding flat to a tolerance of 1/10

Aluminum-Alloy Filter Ring

and filters

proudly makes its filters in the USA and backs up its products with a solid 10-year warranty

Red 23A Screw-In Filter Size:55mm and grinding flat to aIncreasing contrast when working in black and white, this Red 23A Filter from Tiffen is used to noticeably darken cool and blue tones in order to emphasized both shadows and clouds. Offering greater tonal separation than regular yellow and orange contrast filters, the light red 23A is especially well suited to producing dramatic outdoor and landscape imagery. There is an approximate 4x filter factor with this filter, requiring an increase of 2 stops