093 infrared filter black red 830. The B+W 093 infrared filter 830 blocks all visible light, so it appears black and allows 695 shots in pure infrared without the visible red. Transmission only exceeds 1% at 800nm 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 greatly on the lighting. The optimal exposure value can be determined via a test series. - For experimental photo shoots - Images with extremely high black and white contrasts - Green foliage is reproduced bright white - Made in Germany Digital cameras usually have a fixed IR-Cut filter in front of their image sensor, but the existing residual sensitisation can be used for infrared photography. This gap is exactly what the B+W 092 infrared filters 695 and B+W 093 infrared filter 630 use when the visible light is blocked. The selection of the image section and the infrared focusing are done before screwing on the filter, as there is no control in the viewfinder or on the LCD. The result is creative infrared photos with a fantastic "wood effect" (white leaves) and the typical dark sky. The image program optimises the IR photos: contrast automatically or in the histogram. Convert a colour image to SW or "play" with individual colour channels, the red channel remains to maximum. Infrared photography always has an experimental character.