An exposure/processing technique in which the effective speed of the film is raised, coupled with an increase in developing time. In actuality, it is deliberate underexposure of the film with extended developing time that increases density mainly in the highlight areas. Pushing raises the contrast and increases grain, but it can be used effectively for creative and corrective shooting under dim lighting conditions.ritzcamera
Compensating through overdevelopment for inten-tional or unavoidable Underexposure. Cost: a little money and a lot of Grain gain.