The B+W 30.5mm 039 Blue Infrared Glass Filter can help your digital camera get better exposures. Digital sensors are sensitive to IR waves which can cause "noise" and contaminate the image. The 039MC filter helps block damaging rays thereby giving your image a better exposure.
Multi-coated to minimize reflection at the filter surfaces which reduces flare and ghosting.
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 color changes and lack of sharpness
Lack of sharpness results from the chromatic aberration of the lenses that are only corrected for visible light
In the visible range, the transmission curve is very high and straight