Since the recent demonstrations of high-quality three-dimensional imagery, possible uses for this technique have been explored. In addition, many other long-proposed applications cover a wide range, from x-ray microscopy to communication transmission and from interferometry to reconnaissance. This paper will summarize these applications and comment on their attainability. Experimental results of recent work will be presented.

The advantages of narrow spectral width associated with high energy density make the use of lasers attractive for many conventional photographic situations. The effects of both spatial and time coherence on such photographic operations as contact printing, enlarging, etc., will be discussed. The use of coherent light allows a number of unconventional photographic applications to be pursued. The most popular of these presently is the hologram. Some comments on this and other applications will be included.

Photometric measurements must be related to standards of reference to have any absolute significance. This paper describes the historical background of photometric standards and the prime and secondary devices and their relation to primary lamps from the National Bureau of Standards. The instrumentation and techniques used to perform the transfer of standards are described as well as the need for and use of these photometry standards.

Problems in designing advanced microdensitometer systems are discussed. Requirements for systems capable of generating data suitable for direct use as computer input and some equipment design considerations are reviewed.