Leica E39 Or filter with case

Leica E39 Or filter case included.

The Leica E39 Orange Filter is a 39mm contrast filter, used for black and white photography.
A colour filter darkens it’s complementary colours, in this case purple and blue. Therefore the sky gets darkened for a dramatic look and creates a higher contrast with white clouds.
It also improves overall contrast.
This particular orange filter is popular with landscape and architecture photographers.