Is the term "Black Mist" correct for the B+W orange and red filters? On the B+W website, black and white mist filters are listed separately as colourless filters. The orange and red filters on the website are therefore "normal" filters for photography with analogue films to control the conversion of colours into shades of grey. Black-mist filters reduce the contrast, but that's exactly what you don't want with an orange or red filter.