Photographic print toning

In photography, toning is a method of altering the color of black-and-white photographs.

[1] Toner also can increase the range of shades visible in a print without reducing the contrast.

Some toning processes can improve the chemical stability of the print, increasing its potential longevity.

Other toning processes, such as those including iron and copper, can make the print less stable.

It is therefore extremely important that the chemicals be used in a well ventilated area, and rubber gloves and face protection should be worn when handling them.

The change in color depends upon the chemical make-up of the photographic emulsion being toned.

Recently, doubts have surfaced as to the effectiveness of selenium toner in ensuring print longevity.

Incomplete bleaching creates a multi-toned image with sepia highlights and gray mid-tones and shadows.

The in-camera effect, as well as beginner tutorials given for software like Photoshop or GIMP, use a simple tint.