B+w Uv-ir Cut 486 Mrc Basic 39 Mm Polarizing Filter

B+W Filters BW1102738 B+W Basic UV-IR Cut 486 Filter MRC 39mm Block unwanted UV and IR radiation Used on cameras without an integrated IR protection filter Completely clear and it requires no increase in exposure Made in Germany This B+W Interference Filter has a completely colourless 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, affecting the wavelengths on both sides of the visible spectrum with a steep cut-off. It is used mainly on digital and video cameras with CCD sensors without an integrated IR protection filter, because the IR sensitivity of the CCD sensor would otherwise cause colour changes and unsharpness. That unsharpness results from the chromatic aberration of the lenses t...