selenium toner造句

Sepia and brown hued images are produced by certain photographic processes such as calotypes and albumen prints, or by the use of Selenium toner produces a blue-black or purple image, similarly by converting silver into more stable silver selenide.
Selenium toner acts as a preservative and can alter the color of a print, but Adams used it subtly, primarily because it can add almost a full zone to the tonal range of the final print, producing richer dark tones that still hold shadow detail.
It's difficult to find selenium toner in a sentence. 用selenium toner造句挺难的