Mark Galer

essential skills

Gain a knowledge and understanding of exposure and its relationship to light sensitive surfaces, depth of field and selective focus.

Understand the camera’s TTL light meter.

Understand the relationship between subject brightness range and exposure.

Create images demonstrating an understanding of metering techniques.


An understanding of exposure is without doubt the most critical part of the photographic process. Automatic exposure systems found in many sophisticated camera systems calculate and set the exposure for the photographer. This may lead some individuals to think there is only ...

Get Digital Photography in Available Light: Essential Skills, 3rd Edition now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.