Instant imaging

摘要

Instant imaging was born fifty years ago when E.h.Land set out the goals for "one-step photography" and demon-stated the first instant photographic systems. Since that time, Polaroid, Eastman Kodak, and Fuji Photo Film have developed silver halide-based products with similar "instant" characteristics. The technical highlights of these black-and-white and color diffusion transfer systems are reviewed. The unique characteristics of these imaging products are compared with the original goal for instant imaging. Finally, the gaps between that goal and alternative technological approaches are noted.