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Rollei Ortho 25 is a technical, orthochromatic black and white photographic film with a nominal sensitivity of ISO 25/15 °. Rollei ORTHO 25 is characterized by a high sensitivity reserve of up to two f-stops, depending upon development. The document emulsion offers exceptionally fine grain images with high sharpness. Rollei ORTHO 25 is ideal for technical and scientific applications and as a half-tone film for pictorial photography. The crystal-clear RC base opens up the possibility of using the film as a B&W slide film.
Technical and scientific applications:
reproductions
reproduction of X-ray images
astrophotography
black and white slides and blue slides
graphic distancing (For this application in particular, we recommend Rollei High Contrast (RHC) developer (1 + 5, 3 - 5 min.).)
| Type of Product | Black and White Films |
| Film size | 35mm Standard |
| ISO sensitivity | 25 |
| Film type | Black&White |
