Shanghai GP3 100 Black & White 35mm Film – ISO 100, 24 Exposures

Shanghai GP3 100 Black & White Film – 35mm, 24 Exposures

The same classic ISO 100 black and white negative film you know and love — now in a 24-exposure roll. The GP3 100 is a favourite among film photographers for its fine grain, high contrast, and excellent sharpness, equally at home in street photography, portraiture, and landscape work. The 24-exposure format is ideal for shorter shoots, travel, or when you want to develop sooner.

Features

• ISO 100/21° – fine grain, high contrast, excellent sharpness
• Can be processed/handled under deep red safelight
• Standard black and white chemistry (D-76, HC-110, Rodinal, etc.)
• 24 exposures per roll
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Specifications

• Format: 35mm (135)
• ISO: 100
• Exposures: 24
• Process: Standard B&W chemistry
• HS Code: 370239
• Country of Origin: China
• Manufacturer: Shanghai Jiancheng Film (SHJCFILM)

Frequently Asked Questions

Q: What is Shanghai GP3 100 35mm film?
A: Shanghai GP3 100 is a panchromatic ISO 100 black and white negative film manufactured by Shanghai Jiancheng Film (SHJCFILM) in China. It features a traditional cubic-grain silver-rich emulsion with fine grain, high contrast, and excellent sharpness — suitable for street, portrait, and landscape photography.

Q: What is the difference between the 24 and 36 exposure versions?
A: The emulsion is identical — the only difference is the number of frames per roll. The 24-exposure roll is shorter and suits photographers who prefer to develop more frequently, shoot in shorter sessions, or want a lighter load when travelling.

Q: Can Shanghai GP3 100 35mm be pushed?
A: Yes. GP3 100 pushes reliably to ISO 200 (+1 stop) and ISO 400 (+2 stops) with extended development. It can also be pulled to ISO 50 for reduced contrast in bright light. Refer to the Massive Dev Chart for specific developer times.

Q: What developers work best with GP3 100 35mm?
A: GP3 100 works well with D-76 (1:1) for balanced grain and tonality, HC-110 (Dilution B) for sharpness and speed, Rodinal (1:50) for acutance and classic grain, and ID-11 for fine grain. Stand development in Rodinal (1:100, 60 min) is also popular.

Q: Is Shanghai GP3 100 still being made?
A: Yes. GP3 100 is actively manufactured by Shanghai Jiancheng Film. SHJCFILM is the official manufacturer and direct seller — every order ships fresh stock from the current production batch.

Q: How should I store GP3 100 35mm film?
A: Store in a cool, dry place away from light. Refrigeration at 4–8°C is recommended for long-term storage. Allow film to reach room temperature before opening to avoid condensation.