A statistical analysis of the effects of film nonlinearities on wavefront-reconstruction images of diffuse objects is presented. Regardless of the particular nature of the nonlinearity, the image distortions are shown to consist of additive irradiance contributions which may be found as multiple autoconvolutions of the ideal image irradiance distribution produced by a linear film. The predictions of the general nature of the image distortions are supported by experimental evidence.
J. W. GOODMAN and G. R. KNIGHT, "Effects of Film Nonlinearities on Wavefront-Reconstruction Images of Diffuse Objects," J. Opt. Soc. Am. 58, 1276-1281 (1968)