Glossary of Photographic Terms (F to I)

f/ number This is a ratio of the lens’ focal length divided by the aperture diameter. It gives a measure of light transmittance independent of the lens focal length. f/5.6 (for example) on one lens will transmit the same amount of light as f/5.6 on any other lens. fascia A decorative covering over the frontContinue reading “Glossary of Photographic Terms (F to I)”