O'Reilly logo

The Manual of Photography and Digital Imaging, 10th Edition by Sophie Triantaphillidou, Elizabeth Allen

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter   | 13 |

Image formation and the photographic process

Geoffrey Attridge

All images © Geoffrey Attridge unless indicated.

INTRODUCTION

The foundation of silver-based photography is the light sensitivity of silver salts named silver halides: the chloride, bromide and iodide salts. The latter is usually a very small percentage additive to silver bromide crystals. The discovery by Richard Leach Maddox in 1871 of a method of coating a gelatin dispersion of silver halide crystals on glass plates heralded the universal use of gelatin as a colloid in photographic emulsions.

Silver salts are usefully light sensitive, or can be made so by spectral sensitization. They are also developable to amplify the invisible effect of small exposures – the ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required