8 shots, Rollei Retro 400s This high contrast monochrome film benefits from fitting a yellow/orange/red filter to the lens - it is a panchromatic film with super red sensitivity to the 750nm wavelength, not quite infra-red. A filter is especially desirable if you want to enhance that contrast, love deep blacks and want sky/cloud detail. Needless to say, I put a red filter onto my 1980s Agfa viewfinder camera and shot a roll in various locations to try and get a broad idea of this film's capabilities.