- Cokin P Series Double Mask 2 85mm Lens Filter
Compatible with most large-diameter lenses up to 82mm
Plus fits Cokin P Series holders for wide-ranging use. Recommended for use with 28mm (35mm format) and larger focal lengths.
Lets you combine 2 scenes into 1
By exposing each frame twice, 1 with each filter contained in the set. One filter covers the center of an image and the other filter covers the surrounding frame.
Can be achieved by recocking a camera without advancing the film or exposing the whole roll of film with the 1st filter and then rewinding the film to its initial position and then exposing each frame again with the 2nd filter.