Ortho 25 Plus Bundle | 5x Rollei Ortho 25 + 1x Spur Acurol-N 250ml

Rollei Ortho 25 is a technical, orthochromatic black and white photographic film with a nominal sensitivity of ISO 25/15 °. Ortho 25 is characterized by its high sensitivity reserve of up to two f-stops, depending upon development. The document emulsion offers exceptionally fine grain images with high sharpness. The film is ideal for technical and scientific applications and as a half-tone film for pictorial photography. Additionally, the crystal-clear PET base allows Ortho 25 to be used as 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 the best possible results, we recommend the use of Rollei RHC High Contrast developer with a dilution of 1 + 5, 3 - 5 min. Halftone film for pictorial photography Rollei Ortho 25 in combination with Rollei Supergrain (RSG) fine grain contrast developer offers the highest standards of sharpness and extreme fine grain. Ortho 25 has also developed a legendary reputation when used in combination with Rollei Low Contrast developer. The results are reminiscent of qualities obtained by a Technical Pan film. The comparatively steep gradation is softened by this special developer. Extremely fine grain structure and high sharpness, coupled with detailed gray tones can be achieved in this way. Features:
• low-speed orthochromatic black and white film
• spectral sensitivity 380 to 610 nm
• special coating to improve the transport properties of the film in the camera
• suitable for use in daylight and artificial light, without any restrictions
• polyester base with high tear resistance, suitable for archiving LE 500
• extremely high resolving power of 330 line pairs/mm, depending on the developer
• very fine grain and high sharpness as a base for high-quality negatives
• ideal for scanning and digital processing

Highly diluteable film developer (1+50 to 1+200) with high sharpness, fine grain, rich tonal values and exceptional image depth. Acurol is suitable for all areas and subjects in black and white photography.

• Extreme longevity of the developer concentrate
• High cost effectiveness
• Maximum variety of possible image results
• Extreme fine grain
• Optimal sharpness
• Balanced contrast curve with consistent gray tonality in all areas
• Good pushing capabilities

Developing times for ORTHO 25 plus in SPUR ACUROL-N for a normal contrast (N)

Rollei Ortho 25 plus 135 
ISO 25/15° | Dilution: 1+70 / 20°C | time: 11 min
ISO 100/21° | Dilution: 1+70 / 20°C | time: 15 min 

Rollei Ortho 25 plus 120
ISO 25/15°  | Dilution: 1+70 / 20°C | time: 11 min
ISO 64/19° | Dilution: 1+70 / 20°C | time: 12,5 min