- Orthochromatic B&W Negative Film
- ISO 25/15° in Standard Process
- Very High Sharpness and Fine Grain
- Two-Stop Exposure Reserve
- Ideal for Tech. & Half-Tone Applications
- Spectral Sensitivity: 380-610nm
- Archival LE-500-Rated Polyester Base
- Suitable for B&W Reversal Processing
Rollei/Agfa's Ortho 25 is an orthochromatic black and white negative film optimized for technical, scientific, and half-tone work, as well as creative and pictorial applications. Characterized by extremely high sharpness and resolving power, this unique film also features an impressively fine grain structure and is also well-suited to reversal processing for black and white transparencies. Ortho 25 has a nominal sensitivity of ISO 25/15° and a high-sensitivity reserve of two stops for greater flexibility when shooting. Its spectral sensitivity ranges from 380-610nm and is suitable for photographing in either daylight or tungsten-lit conditions. The film's polyester base has been tested to an LE-500 (life expectancy 500 years) archival rating and also features anti-curling and anti-static coatings, as well as a special coating to promote smooth film transportation within the camera. Additionally, this clear base is particularly well-suited to scanning applications.
This item is one 36-exposure roll of 35mm film.
| Film Format | 135 |
| Film Type | Orthochromatic B&W Negative |
| Film Speed | 25 |
| Film Processing | Standard black and white chemistry |
| Film Base | Polyester |
| Number of Exposures | 36 |
| Number of Rolls | 1 |
| Layer Thickness | 100.0 µm |
| Resolution | 330 lines/mm(at contrast=1000:1) |
| Packaging Info |
| Package Weight | 0.05 lb |
| Box Dimensions (LxWxH) | 2.0 x 1.25 x 1.25" |
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