An integrated circuit chip that converts an optical image into an electronic signal. In current digital cameras, most are either CCD (charged coupled device) or CMOS (complementary metal-oxide-semiconductor) sensors. CCD…
A hand-held light meter that measures the amount of light falling on a subject.
The ABC of Photography - Hot shoe An accessory shoe with an electrical contact, for mounting and connecting a flashgun. Sources: Pixabay, NASA,Wikipedia, Susan Wingfield Lamar High School
A tool for moving your image around when you’re zoomed in and can’t see all the images at once, by dragging on the image. Press the H key, or hold…
Haloes A term used to describe the glow that’s created around the edges of objects when they’ve been over-sharpened in Photoshop or other similar photo-editing software. They are even more…
The ABC of Photography - Diffuser Any material that scatters the light as it passes through it, Softening the illumination and making shadows less distinct. Diffusers are commonly used with artificial light sources.…
Diffraction Scattering of light caused by deflection at the edges of an opaque object. Diffraction causes slight fuzziness in the image when the narrowest apertures are used. Sources: Pixabay, NASA,Wikipedia, Susan Wingfield…
Differential focusing Controlling depth of field to ensure that one element in the picture is sharp, while others are as out of focus as possible. Sources: Pixabay, NASA,Wikipedia, Susan Wingfield…
Depth of field A measure of how much of a picture is in focus, from the nearest point in the scene to the camera that looks sharp, to the furthermost point that…
Dedicated flashgun A type of flashgun that’s designed to provide direct one-way or two-way communication with the camera. The amount of dedication varies enormously depending on the flashgun and camera. Increased dedication tends…