The intensified effect of this filter borders on the abstract. It darkens a blue sky with clouds to resemble the mood of an impending thunderstorm. Architectural photographs gain clarity and drama. This filter is also interesting for many black-and-white close-up photographs of flowers, when dark yellow, orange or red blossoms have almost the same brightness as the surrounding greenery: The B+W 46mm 041 Red-Orange (22) Glass Filter is used to render the flowers in lighter shades of gray. Depending on the subject, its filter factor is 4 to 5.
This filter uses our standard B+W F-Pro filter mount, which has a front accessory thread and is made of brass. Compared to the earlier standard mount introduced in 2001, the F-Pro mount has become thinner. Now it can be used with wide angle lenses, including most 24mm focal lengths on a full frame body, without vignetting. Another advantage of the F-Pro mount is it's modified retaining ring, which is no longer threaded in from the front, but holds the filter glass in place from the back. When removing a filter or lens hood that has been screwed on too tight to the filter, the retaining ring is not at risk of loosening.
Each glass surface is vacuum coated with one layer of Anti-Reflection coating. This single layer helps to prevent internal ghosting and reflections. It also improves light transmission from approximately 92% (uncoated glass) to over 98%.
NOTE: diopters are mounted in the older mount due to glass thickness.