ما مدى تشابه صورة الصبغة مع صورة الفضة . كتاب التصوير الملون ، الكاتب عبد الفتاح رياض

D How similar is the “image of the dye” to the image of silver? with

Wa D (1) The dye image will not form unless combined with the silver image. It appears in the parts in which the silver salt has been reduced to metallic silver, because the reducing agent is oxidized only in the areas in which the silver salt has been reduced. To metallic silver, and colors are formed only in areas that have been touched by the oxidation products of the reducing agent, and in which these products have combined with “color problems.”

Experiments conducted on color problems led to the following results:

D (b) The density of the dye image is directly proportional to the density of the silver image, so if the density of the second image increases in a part, the density of the first image will also increase. The density will be great in the form of silver and also great in the “form of the dye”.

(c) The tint image will be as sharp as the image

Totally silver.

(d) The degree of contrast of the dye image may be less than the degree of contrast of the silver image.