Suitable for Canon 40D/50D/400D/450D/1000D.
Changing the built-in filter increases the
Sensitivity in the important H-alpha range by a multiple. the
BCF filters are also suitable for daylight without using one
require additional filtering.
You achieve an Improved sharpness performance, reduced
Background noise by shortening the exposure times and
lower color deviation with lens lenses due to a steeper
Blocking of UV light.