The movement of electronic still cameras has been active these years in the photography. Most of these cameras are digital still cameras. Out of these cameras, compact types are attracting a special attention. They are put into the market by about 12 manufacturers. The following gives a brief summary of the trend of such cameras as viewed the photography.
It costs a few million dollars to develop a new solid-state image-sensor. Various image sensors with special useful functions have been proposed for scientific and engineering research purposes. However, the enormous cost hampers their development. Presented in this paper is an attempt to classify wide-range of requirements for highspeed image sensors, and to combine them into a limited number of specific designs.