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Ilford Ortho Plus 80 is a black-and-white orthochromatic photographic film with an ISO speed of 80. It is highly sensitive to blue and green light but insensitive to red light, allowing it to be handled under a red safelight in a darkroom. Originally available primarily in sheet film formats for cop...
Rollei Ortho 25 Plus is an ISO 25 orthochromatic black-and-white photographic film produced by Maco under the Rollei brand as a replacement for their earlier Rollei Ortho film. As an orthochromatic emulsion, it is sensitive to blue and green light but not to red light, making it suitable for specifi...
Ferrania Orto is an Italian ISO 50 orthochromatic black-and-white film announced in 2023 by FILM Ferrania as a companion to P30.
FILM Ferrania Orto is an ISO 50 orthochromatic black-and-white film launched in 2023 by the revived Ferrania factory in Liguria, Italy.
Foma Ortho 400 is a Czech ISO 400 orthochromatic black-and-white film, notable as a high-speed ortho stock released in 35mm, 120 and sheets.
