Nikon D7000 manual Glossary

Glossary

It’s always handy to have a single resource where you can look up various terms you’ll encounter while working with your digital camera. Here is the latest update of a glos- sary I’ve compiled over the years, with some new additions specifically for the Nikon D7000.

AE-L/AF-LA button on the D7000 that allows locking exposure and/or focus point prior to taking a photo.

ambient lighting Diffuse, non-directional lighting that doesn’t appear to come from a specific source but, rather, bounces off walls, ceilings, and other objects in the scene when a picture is taken.

analog/digital converter The EXPEED module in the camera that electronically con- verts the analog information captured by the D7000’s sensor into digital bits that can be stored as an image.

angle of view The area of a scene that a lens can capture, determined by the focal length of the lens. Lenses with a shorter focal length have a wider angle of view than lenses with a longer focal length.

anti-aliasA process that smoothes the look of rough edges in images (called jaggies or staircasing) by adding partially transparent pixels along the boundaries of diagonal lines that are merged into a smoother line by our eyes. See also jaggies.

aperture The size of the opening in the iris or diaphragm of a lens, relative to the lens’s focal length. Also called an f/stop. For example, with a lens having a focal length of 100mm, an f/stop with a diameter of 12.5mm would produce an aperture value of f/8.

Aperture-priorityA camera setting that allows you to specify the lens opening or f/stop that you want to use, with the camera selecting the required shutter speed automatically based on its light-meter reading. See also Shutter-priority.

artifact A type of noise in an image, or an unintentional image component produced in error by a digital camera during processing, usually caused by the JPEG compression process in digital cameras, or, in some cases, by dust settling on the sensor.