AgfaPhoto APX 400 is another well-regarded black-and-white film from Agfa, offering distinct characteristics suited for various photography needs. Here are the key features and details about AgfaPhoto APX 400:

ISO Rating: APX 400 is rated at ISO 400, making it suitable for a wider range of lighting conditions compared to its ISO 100 counterpart. It performs well in lower light situations and allows for faster shutter speeds, which is beneficial for action or handheld photography.

Grain Structure: Although it has a coarser grain than APX 100 due to its higher sensitivity, APX 400 still maintains a relatively fine grain structure for an ISO 400 film. This provides a good balance between detail and speed.

Contrast and Tonality: APX 400 offers strong contrast and a broad tonal range. It delivers deep blacks, bright whites, and a variety of mid-tones, making it versatile for different photographic styles. Its contrast is slightly higher than that of APX 100, which can give images a more dramatic look.

Development: Like APX 100, APX 400 can be processed using standard black-and-white developers. It is known for its flexibility in development, allowing photographers to push or pull the film to different ISOs with good results. This makes it adaptable for various shooting conditions and artistic effects.

Availability: AgfaPhoto APX 400 is currently available in 35mm format.

Applications: Due to its higher sensitivity, APX 400 is ideal for a wide range of applications, including street photography, documentary, sports, and any situation where lighting might be less predictable. It is also favored for its ability to capture action and movement effectively.

Storage and Handling: As with all photographic films, APX 400 should be stored in a cool, dry place to maintain its quality over time. Proper handling and storage ensure the film delivers optimal performance when used.