Filter—Baader Venus Ultraviolet Cut
Spectral transmission graphs on this page were measured by Coastal Optical Systems on their equipment using single samples of the specified filters. Graphs used by permission.
Graphs are in nanometers. Visible light is approximately 390 - 650 nm (the human eye can see very weakly into the 700-800nm range).
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Blocks UV and IR quite effectively.
I do not own this filter, but it is likely an interference-type filter, which makes it problematic on wide-angle lenses (even if it could be fitted to them in terms of size). That’s because more ray angles at the edges cause a color shift.
See also the B+W 486.
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