The B+W 092 IR filter 695 looks almost black, but is deep purple-red in front of a light source. It blocks visible light up to 650 nm, and at just below 700 nm it allows 50% to pass through (hence the dark red color).

From 730 nm to 2.000 nm the transmittance is very high at over 90%. This allows shots of the pure red and IR image. This IR filter is suitable for most digital cameras.

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.