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K2 features Aperture priority-Aperture priority may be chosen when control of depth-of-field is required. This may be either to ensure objects at different distances are in focus - by specifying a small aperture, or that so objects (perhaps the subject of a photo) are in focus while others (perhaps the background) are not - by specifying a large aperture.
The Camera+ select the proper shutter speed between 1/1000th and eight seconds when the shutter release is depressed. Other notable features on the K2 are the mirror lock-up, shutter speeds from 1/125 seconds to 1/1000 and works without battery power.
K2 features: self timer (5 to 9 seconds)
Depth of field preview, auto exposure (Aperture priority); exposure compensation (4x, 2x, 1x, 1/2x,1/4x)
Shutter speeds down to eight seconds.
Manual mechanical shutter: 1/125 to 1/1000 sec and B
(Information cited on "Camerpedia Wiki)