The Formatt 67mm Red 3 Glass Filter is used when you want maximum contrast from your black and white photography. This filter absorbs green and can turn your simple scenic shots into dramatic presentations. When combined with a polarizing filter, the red filter can make a sky take on the mood of an impeding storm and is particularly useful when used for seascapes.
If used with color film, this filter will turn everything red giving your sunset a more surreal and intense appearance.
Clouds are dramatically improved almost to the mood of a thunderstorm
Darkens blue sky creating dramatic contrast between sky and clouds
More effective in cutting through haze
Moonlight effects are easily accomplished
Creates greater contrast between foliage and flowers
Also suited for some infrared photography
Note:
Always check with film manufacturer's specifications