093 infrared filter black and red 830. The B+W 093 infrared filter 830 blocks all visible light, so it appears black and, in contrast to the B+W 092 infrared filter allows 695 shots in pure infrared without the visible red. Transmission only exceeds 1% at 800nm to increase to 88% at 900nm. With this pure IR filter, pay great attention to the IR residual sensitization of the digital camera. The filter factor depends very on the lighting. The optimal exposure value can be determined via a test series. - For experimental photography - Image results with extremely high black and white contrasts - Green foliage is reproduced bright white - Made in Germany Digital cameras usually have a built-in IR-Cut filter in front of their image sensor, but the existing residual sensitization can be utilised for infrared recordings. This is exactly the gap the B+W 092 infrared filter 695 and B+W 093 infrared filter 630 take advantage of when the visible light is blocked. The selection of the image section and the infrared focusing are carried out before screwing the filter, as the infrared filter is not possible to control the viewfinder or on the LCD. The result is creative infrared photos with a fantastic "wood effect" (white leaves) and the typical dark sky. In the picture program, the IR photos are optimised: contrast automatically or in the histogram. Convert a colour image in SW or "play" with individual colour channels, the red channel remains to maximum. Infrared photography always has an experimental character.