Abstract: High aspect ratio tabular grain direct reversal silver halide emulsions are disclosed. The emulsions can be incorporated in photographic elements, such as multicolor photographic elements. Image transfer film units incorporating these direct reversal emulsions are specifically disclosed.

Abstract: An ultrasonographic element is disclosed comprised of first and second layers coated on a support, at least one of the layers being a silver halide emulsion layer. One of the layers contains a diffusible ion capable of altering the sensitivity of a silver halide emulsion while the other layer is capable of immobilizing the diffusible ion. Interposed between the layers is a barrier for impeding diffusion of the sensitivity altering ion in the absence of ultrasound. An ultrasonographic image is formed by contacting the element with a transport liquid, ultrasonically exposing the element imagewise to accelerate diffusion of the sensitivity altering ion between the layers, exposing the element to electromagnetic radiation and photographically processing the element to produce an image corresponding to the image pattern of ultrasonic exposure.