Ilford Ortho Plus is an orthochromatic black-and-white film which until recently was only available in sheet film formats. In October 2019 Ilford introduced the film in two new, more commonly used film formats, namely 35mm and 120. Ortho Plus was designed as a high-resolution copy film for negatives and offers superb photographic potential thanks to its fine grain and sharpness.
Ideally suited for landscape photography, the blue and green sensitivity of this emulsion enables the film to be handled in deep red safelight conditions (no amber safelight) making processing and inspection easier.
Its lack of red sensitivity also means that reds and oranges in your frame are rendered darker with stronger contrast than standard panchromatic films (all other Ilford and Kentmere films are panchromatic).
Ilford Ortho Plus must be exposed at ISO 80 for daylight / natural light shooting. For tungsten work an ISO setting of 40 should be used. Whether shooting at ISO 80 or 40, it can be processed as standard. Development times can be found in the technical data sheet (see download section of this product sheet) or on the inside of the film cartons.