Technical Data

Format: 120 roll film (medium format)

Film type: Orthochromatic black-and-white negative film

Sensitivity: ISO 80/20° in daylight, ISO 40/17° in artificial light

Image: Fine-grained, high sharpness and resolution

Color: Black-and-white, blue- and green-sensitive, not red-sensitive

Development process: Black-and-white negative development

Exposures: Depending on the frame size, e.g. 12 exposures at 6×6 or 16 exposures at 6×4.5

DX coding: None

Manufacturer: Ilford Photo

Character

Ilford Ortho Plus 80 is a low-sensitivity orthochromatic black-and-white film with particularly fine grain, high sharpness and excellent detail reproduction. Originally developed for high-resolution reproduction, it is also suitable for classic photography.

Unlike conventional panchromatic black-and-white films, Ortho Plus responds exclusively to blue and green light. Red and orange tones are therefore rendered significantly darker, leading to a characteristic tonal distribution and greater separation of certain colors.

In daylight, the film is exposed at ISO 80, while Ilford recommends ISO 40 in artificial light. It is developed using standard black-and-white chemistry. Due to its lack of red sensitivity, the film can be processed under suitable dark red darkroom lighting.

Typical Applications

Landscape photography, architecture, portraits with characteristic tonal reproduction, still life, reproduction photography and experimental black-and-white photography.