Panchromatic B&W Negative Film ISO 3200/36° in Standard Process High Speed, Very Wide Exposure Latitude Ideal for Difficult Lighting Conditions Unobtrusive Grain, Rich Tonality Ilford's Delta 3200 Professional is a high-speed black and white negative film for producing prints using a traditional black and white process. The film exhibits a nominal sensitivity of ISO 3200/36°, making it ideal for use in difficult lighting conditions, indoor scenes, and for fast-moving subjects. Standard development in black and white chemistry yields an unobtrusive grain texture with rich tonality and the film also responds exceptionally well to under/over exposure and push/pull development.