Scanning normal color negative images for post-production and visual effects using modern high-end technology allows users to capture the dynamic range of the color negative. Film archives, however, typically manage large volumes of historic images and require specialist equipment which enables the capture of an even greater dynamic range. This is particularly important when managing black and white (B&W) recorded images on either print or negative stocks that have a high dynamic range.
Traditionally, HDR scanning is done using a multiple exposure method during which a scanner ‘stops the film’ to capture images at different exposure levels. Images are subsequently recombined into a single HDR image, a process that significantly slows the rate of scanning.
This white paper demonstrates the normal process of imaging and then explains our technique for film scanning of B&W film stock (either print or negative) without affecting the maximum scan rate of a scanner or its maximum resolution.