The platinum print has been called the most beautiful photographic process. It has a naturally warm color and a greater tonal separation in the midtones and highlights.
Platinum prints are also ironically the most expensive of the alternative printing techniques.
Other chemicals needed are a developer and a clearing bath. Palladium may be used without the addition of the high-priced platinum, but platinum prevents the palladium from solarizing in the deep shadows. Platinum also increases contrast slightly. This control is very limited, and too much 2 can increase the grain of the image. Exposure time will vary from a few minutes to 30 in bright sunlight.