Pentax K20D User Manual

76
Shooting Functions
4
Setting the Exposure
Correct exposure of the subject is determined by the combination of
shutter speed and aperture setting. There are many correct combinations
of shutter speed and aperture for a particular subject. Different
combinations produce different effects.
The shutter speed determines the length of time that light is allowed to
strike the CMOS sensor.
Using slower shutter speed
If the subject is moving, the image will be
blurred because the shutter is open
longer.
It is possible to enhance the effect of
motion (rivers, waterfalls, waves, etc.) by
intentionally using a slower shutter speed.
Using faster shutter speed
Choosing a faster shutter speed will allow
freezing the action of a moving subject.
A faster shutter speed also helps
preventing camera shake.
Effect of Aperture and Shutter Speed
Effect of Shutter Speed

Pentax K20D Specifications

General

Camera Type	Digital SLR
Sensor Type	CMOS
Sensor Size	23.4 x 15.6 mm
Resolution	14.6 MP
Continuous Shooting Speed	3 fps
Image Stabilization	Sensor-shift
Screen Size	2.7 inches
Screen Resolution	230, 000 dots
Storage Media	SD/SDHC
Dimensions	141.5 x 101 x 70 mm
Weather Sealing	Yes
Image Processor	PRIME (Pentax Real Image Engine)
Shutter Speed	30-1/4000 sec
Viewfinder	Optical (pentaprism)
Battery	Rechargeable Lithium-Ion battery
ISO Range	ISO 100 - 3200 (expandable to 6400)