抄録
Further considerations on photographic lens performance with “information volume” defined in the author's previous paper1), is described.
Information volume in two dimentional domain is analogous to Strehl's “Definitionshel-ligkeit” and has characteristics of absolute measure of lens performance.
There is phase shift on response function when response has odd component. This phase shift means optical distortion of higher order, and the author defined it as “phasic distortion”
The principle and methods of experiments with emulsion and model of emulsion are given.
