• The Cokin red filter gives your picture dramatic character by severly contrasting blue sky to almost black.
• By this contrast the clouds become more brilliant.
• Ambient light is very strongly subdued.
Reviewed by 1 customers
This will give you a black and white film effect, but in red. You don't have to wait for b/w film to be developed and find that the photo had too many objects of the same value. Also, the main subject gets emphasis. Be sure to open the aperature 1 or 2 stops.