Pentax K100D Review
Top of camera controls (right)
Just three controls on the top right side of the K100D, the power / DOF preview switch, the shutter release button and the exposure compensation / aperture value button. At the back 'under your thumb' are the command dial and Auto Exposure lock button.
|Av||Exposure compensation / Aperture value
Hold this button and turn the command dial to set exposure compensation (-2.0 to +2.0 EV in 0.3 or 0.5 EV steps) - not available in all modes. In manual exposure mode hold this button and turn the command dial to set aperture, turn the dial on its own to set shutter speed.
|AE-L||Auto Exposure Lock
Locks the exposure at the currently metered point, this is automatically reset after approximately 20 seconds.
Top of camera controls (left)
On the left top of the camera is the exposure mode dial. The AUTO PICT mode is indicated as the 'best choice' for novice users and the green line extending around the edge of the dial indicates the picture modes automatically selected in AUTO PICT. You can manually select one of the six picture modes, additional scene modes or normal SLR exposure modes. When you turn the exposure mode dial the camera will indicate the selected mode on the LCD monitor along with a brief description.
Exposure Mode Dial
|P|| Program Auto Exposure
In this mode the camera automatically selects aperture and shutter speed based on the current metered exposure value, exposure compensation and selected ISO sensitivity. Note that the K100D does not have program shift or 'hyper program'.
|Tv||Shutter Priority Exposure
In this mode you select the shutter speed and the camera will calculate the correct aperture depending on metered exposure, exposure compensation and ISO sensitivity. Turn the front command dial to select shutter speed (0.3 or 0.5 EV steps). The camera automatically calculates the appropriate aperture for correct exposure.
1/4000, 1/3200, 1/2500, 1/2000, 1/1600, 1/1250, 1/1000, 1/800, 1/640, 1/500, 1/400, 1/320, 1/250, 1/200, 1/160, 1/125, 1/100, 1/80, 1/60, 1/50, 1/40, 1/30, 1/25, 1/20, 1/15, 1/13, 1/10, 1/8, 1/6, 1/5, 1/4, 0.3, 0.4, 0.5, 0.6, 0.8, 1, 1.3, 1.6, 2, 2.5, 3.2, 4, 5, 6, 8, 10, 13, 15, 20, 25, 30 sec
|Av|| Aperture Priority
In this mode you select the aperture and the camera will calculate the correct shutter speed depending on metered exposure, exposure compensation and ISO sensitivity. Turn the rear command dial to select aperture (0.3 or 0.5 EV steps). The camera automatically calculates the appropriate shutter speed for correct exposure. (Exact range depends on lens used)
In this mode the shutter is open for as long as you press the shutter release button. Select aperture by turning the command dial.
Optimal for capturing portraits. * (Larger apertures for shallow depth of field)
Deepens the focus range, emphasizes contour and saturation of trees and the sky, and produces a bright image. * (Smaller apertures for more depth of field)
Lets you take vibrant pictures of flowers and other small subjects at short distances. *
Lets you take sharp pictures of a quickly moving subject, such as a sporting event. * (Prioritizes faster shutter speeds)
|Night Scene Portrait
Lets you capture people against a night view or dusk. * (Allows flash slow sync; slow exposures in combination with flash)
The built-in flash is deactivated. Other settings are the same as 'Normal' mode. *
Lets you select from 8 additional shooting scenes depending on the shooting conditions. * (Night Scene, Surf & Snow, Text, Sunset, Kids, Pet, Candlelight, Museum).
* Description of picture modes taken from the Pentax K100D user manual with permission. Note that each scene mode has its own set of image parameters (color saturation, tone etc.) which aren't detailed by Pentax.
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