The Tiffen #3 viewing filter is designed for faster films and video. Balancing lighting by eye is a matter of experience. Decisions can be made easier by using contrast viewing filters. These are designed to limit the eye, with its much wider range of apparent densities, to resemble the range of different types of film.nnnFeatures:nn- Use contrast viewers to judge the relative densities of highlights and shadowsn- There are viewers for black and white films, as well as various density viewers for colour filmn- A darker viewer is used for slower film speeds, where you would tend to use brighter lighting; A faster film, which can be used in darker environments, would require a lighter viewernnTiffen viewing filtersnn- #1 is for black and white imagingn- Viewer #2 is for film speeds up to 100n- #3 is for faster films; They can also be used for video, with #3 being better suited to lower light levelsn- The green #4 viewer is for process photographyn- The blue #5 is for blue screen work, as well as for adjusting colour video monitorsnnSpecifications:nn- Type: Viewing filtern- Size: Not applicablen- Grade: 3n- Effect: Judges the relative densities of highlights and shadowsn- Application: For judging contrast in black and white photography with faster films and in videon- Construction: Glass