Influence of microscopic mottle on the definition of small image details.
By a special technique of enlarging films, a microscopic mottle caused by quantum fluctuations was demonstrated. It was found to affect depiction of small details in such a way as to suggest that it would be of importance for determining resolution capacity, especially in high-speed radiography. Thus, the modulation transfer function appears not to be the only factor determining radiographic resolution. The resolution of high-speed screens may be improved if the film speed is reduced, which leads to a diminished microscopic mottle.
D010781:Photography / Q000295:instrumentation; D011829:Radiation Dosage; D011856:Radiographic Image Enhancement / Q000295:instrumentation