35mm black-and-white film Ilford Delta 400, ISO 400, panchromatic

Ilford Delta 400 is a 35mm black-and-white panchromatic film with ISO 400 sensitivity, engineered for fine grain, high sharpness and a wide tonal range across varied lighting conditions. Using core-shell crystal technology, this film balances speed and detail to produce images with strong microcontrast and well-defined textures, suitable for handheld shooting, low-light situations and scenes that require both fine detail and broad tonal separation.

Advantages

Delta 400 offers a combination of high speed and controlled grain, delivering exceptional sharpness and detail while preserving subtle tonal transitions. The core-shell silver halide crystals improve apparent sharpness and acutance without excessive granularity. Its wide tonal range retains highlight and shadow information, enabling versatile development and post-processing choices within standard black-and-white chemistry.

Suitable for

• Street and documentary photography where quick response and versatility are required
• Portraiture with natural contrast and detailed rendering of facial textures
• Low-light and available-light scenes when using handheld cameras
• Action and fast-moving subjects where higher shutter speeds are needed
• Fine-art black-and-white work that benefits from a wide tonal palette

Key specifications

• Format: 35mm film cartridge
• Light sensitivity: ISO 400 (panchromatic)
• Grain structure: fine grain enhanced by core-shell emulsion
• Tonal range: wide tonal separation with high microcontrast
• Compatibility: standard black-and-white development processes

How to use

Load the 35mm cartridge into a compatible 35mm camera and set the camera ISO to 400 for general use. Expose according to lighting conditions and desired depth of field; the film tolerates push and pull processing within moderate limits for creative exposure control. Develop in common black-and-white developers following manufacturer's recommended times or established lab protocols to achieve intended contrast and grain characteristics.

Usage recommendations

For handheld and low-light shooting, pair Delta 400 with fast lenses and stable handling to maximize sharpness. When seeking the finest detail, use developers and development times known to preserve microcontrast. For portraits, consider controlling contrast with lighting or development adjustments to retain midtone nuances.