A black and white or colour film that is sensitive to infrared radiation, which is invisible to the human eye. During focusing the photographer must refocus after set up as infrared film is on a different plane than what the human eye sees. Internegative:

An enlarger using one or more glass condenser lenses between the lamp and film plane to provide a focused and even distribution of light. Contact Paper: A slow speed black and white photo paper used primarily for making contact prints from negatives. Kodak AZO is an example.

An opening in a lens through which light enters. Aperture size is calibrated in f-numbers. The larger the f-number(ex.f11, f16) the smaller the opening size.

An electronic flash that has a photocell which measures the amount of flash illumination reflected back by the subject. When enough light for a properly exposed picture is reflected to the photcell, it stops the flash from emitting more light.

As the name implies, a camera or lens that automatically adjusts the focus by a variety of electronic or mechanical means.

A motorized mechanism for advancing the film in a camera and recocking the shutter. Most autowinders have a maximum speed of about two frames per second. Standard feature on most modern autofocusing cameras.

A shutter speed setting on adjustable cameras that keeps the shutter open for as long as the shutter is pressed. Used for taking timed exposures with a cable release.( e.g. Astronomical photography) Bayonet Lens Mount:

An accessory with a flexible pleated material that goes between the camera and lens to extend the lens to film distance for extreme close-up photography. In most cases the photographer will have to increase the exposure to compensate for light reduction.

Taking additional photos of a subject over a range of varying exposures when unsure of the correct exposure.

A flexible cable with a plunger on one end that is attached to a camera's shutter release. When the plunger is pressed, the shutter is tripped. They are now available as multi-function electronic remotes with most of the newer autofocus cameras. Changing Bag: