Glossary
- Aperture:
The size of the opening in a lens. The larger the aperture, the more light that hits the sensor.
- Black frame:
An image shot with the shutter closed or the lens cap on for the purpose of noise cancellation.
- Black frame reduction:
Combines a black frame with a photo in order to cancel noise in the photo.
- Bulb:
A Bulb exposure is one in which the shutter stays open as long as the shutter release is engaged.
- CCD:
Charge-coupled device, or filter, used to shift image signals from one spectrum to another.
- Composite:
Combined images that are used to create a new composition.
- Depth-of-field:
The area in front of and behind a subject that is in focus.
- DSLR:
Digital Single lens Reflex, a camera in which photos are composed through the lens that will be used to take the actual image.
- Dynamic range:
The difference between the lightest tonal values one can see and the darkest tonal values in a photo,
- Exposure:
The amount, or act, of light hitting the camera sensor; also the camera settings used to capture this incoming light
- Exposure histogram:
A bar graph displayed on a camera or computer showing the distribution of lights and darks in a photo.
- f-number, f-stop:
The size of the aperture, written f/n, where n is the f-number. The larger the f-number, the smaller the opening in the lens.
- Focal length:
The distance from the end of the lens to the sensor.
- GPS:
Global Positioning System, a radio-navigation system that provides location, navigation and timing services.
- Hand
HDR: The process of creating a HDR ...
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