This B+W Interference Filter has a completely colorless glass carrier coated with a number of extremely thin, partially reflecting layers with precisely computed thicknesses, similar to MC coating.
The B+W Filter 486 does not block by means of absorption, but by interference of the unwanted UV- and IR radiation that is repeatedly reflected between these layers.
It is especially recommended for CCD applications where digital image sensors have not been fitted with an IR protection filter.
This filter is completely clear and it requires no increase in exposure. Its filter factor is 1.
Reviewed by 1 customers
I bought this lens for use with my D2h and 18-70mm f/3.5~4.5 DX Nikkor lens. It definitely block IR. I get nice blacks when shooting with this lens. But there is a slight cyan cast at the corners of the image when shooting in the 18mm to 24mm range, but the cast is gone by 35mm and longer. I recommend this filter for use on 35mm lenses OR LONGER with DX bodies. I do not recommend this lens for use with any lens wider than 35mm. Consider the #489 IR filter instead for wide lenses. That is my opinion.