O'Reilly logo

Basic Photographic Materials and Processes, 3rd Edition by Nanette L. Salvaggio

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 2

Camera and Printing Exposure

image

Photograph by David Kelbe, Imaging Science Student, Rochester Institute of Technology

 

Camera Exposure Versus Photographic Exposure

Although the terms camera exposure and photographic exposure are related, they are not the same. The term camera exposure refers to the combination of shutter speed and ƒ-number used to expose an image. Photographic exposure is defined as the quantity of light per unit area received by the film, photosensitive material, or digital sensor, and it is calculated by multiplying the illuminance (H) and the exposure time (t). The relationship is commonly expressed as H = E × t.

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