B+W 093 INFRARED FILTER 830
The B+W 093 IR filter 830 blocks the entire visible light spectrum. It therefore appears black and in contrast to the B+W 092 infrared filter 695, it enables shots in pure infrared without the visible red. The transmittance does not exceed 1% until 800 nm, but increases to 88 % at 900 nm. With this really pure IR filter, great attention must be paid to the residual IR transmission the digital camera does or does not transmit (i.e. certain cameras are better suited than others). The filter factor is highly dependent on the lighting. The optimum exposure value can be determined by running a series of tests.