Ilford's Delta 400 Professional is a high-speed black and white negative film featuring core-shell crystal technology in order to produce high sharpness with a fine, uniform grain structure. It has a nominal sensitivity of ISO 400/27° when developed in standard black and white chemistry, making it well-suited to handheld photography and working in difficult lighting conditions. This versatile film also features a broad tonal range and a wide exposure latitude, which is capable of being rated between EI 200 to EI 3200 and being pushed or pulled during development in order to maintain consistent contrast.

This is one 100'-long roll of standard-perforation 35mm film designed for bulk loading applications.