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Glossary – I

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Incident Light – Light that falls on a surface and is not reflected by it. An incident light meter would be used to measure this for proper exposure settings.

Interchangeable Lens – Some camera systems offer the ability to swap lenses at any time and offer a magnitude of lenses for any given situation. Most commonly found on single-lens reflex (SLR) cameras.

ISO – Stands for “International Organization for Standardization,” a universal system to measure film speed. You will see this used as ISO 100 for 100 speed film.