DSLR
Abbreviated term for: Digital Single-Lens Reflex.
A digital camera that uses a mechanical mirror system to direct light from the lens to the camera’s sensor chip rather than an ordinary digital point and shoot camera, which typically exposes the sensor constantly to the light projected by the lens, allowing the camera's screen to be used as an electronic viewfinder.
For more information, check out Canon’s DSLR range here.
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depth of field
The range in front of and behind the point of focus where objects will appear to be in focus. The depth-of-field becomes narrower with a larger aperture (lower f-number), longer focal length lens, and shorter distance between the camera and subject.
See also: aperture, focal length
depth-of-field preview
A feature that enables you to see the depth of field through the viewfinder. You can see what's sharp and not sharp.
develop
The process of using the camera or personal computer to obtain an image from RAW image data.
dpi
A measurement unit that represents the image resolution. It stands for dots per inch. It is the number of dots fitted into 1 inch (2.54 cm). When you print the photo, you can specify the resolution. For printers, the dpi also indicates how many dots it can print in 1 inch. (For digital images, it is actually pixels per inch.)
drive mode
The mode in the Canon camera that allows you to choose your shooting mode, including single shooting, continuous shooting, self-timer/remote control, self timer: 2sec and self-timer: continuous.
