Pentax Optio A20 User Manual

56
Taking Pictures
4
R (Program mode), (Shutter Priority mode) and (Manual Exposure
mode) allow you to take pictures with various aperture and shutter speed settings
(Exposure modes).
Enjoy a wide variety of shots by using other functions such as Flash mode or
Continuous Shooting mode.
Effect of Aperture and Shutter Speed
There are many correct combinations of shutter speed and aperture for a
particular subject. Different combinations produce different effects on a picture.
Using the Exposure Mode and Other Fuctions
R
Program
Sets shutter speed and aperture automatically for proper
exposure.
Shutter Priority Set shutter speed manually. Aperture is set automatically.
Manual
Exposure
Set both shutter speed and aperture manually.
Slower shutter
speed
The shutter remains open for a longer time. If the subject is moving,
the image will be blurred while the shutter is open, thus enhancing
the effect of motion.
Faster shutter
speed
The shutter remains open for a shorter time. It allows freezing the
action of a moving subject.
Lesser aperture
value
Decreases the amount of light which enters through the lens.
Higher aperture
value
Increases the amount of light which enters through the lens.
Shutter release button
Four-way controller
OK button

Pentax Optio A20 Specifications

General

Megapixel	10 MP
Sensor type	CCD
Image sensor size	1/1.8 \
Maximum image resolution	3648 x 2736 pixels
Still image resolution(s)	640 x 480, 1024 x 768, 1600 x 1200, 2048 x 1536, 2592 x 1944, 3072 x 2304, 3648 x 2736
Digital zoom	4 x
Focal length range	7.9 - 23.7 mm
Digital SLR	No
Built-in flash	Yes
Camera shutter speed	4 - 1/2000 s
Effective sensor resolution	1037000 pixels
Compatible operating systems	Windows 98/98SE/Me/2000/XP
Focal length (35mm film equivalent)	38 - 114 mm
Focus adjustment	Auto
Normal focusing range	0.35 - ∞ m
Super Macro focusing range	0.06 - 0.15 m
Macro focusing range (wide)	0.12 - 0.4 m
Light metering	Centre-weighted, Spot
ISO sensitivity	64, 100, 200, 400, Auto
Internal memory	22 MB
Compatible memory cards	sd
Maximum memory card size	4 GB
Motion JPEG frame rate	30 fps
Video formats supported	AVI
Maximum video resolution	640 x 480 pixels
Display diagonal	2.5 \
Display resolution (numeric)	232000 pixels
USB version	2.0
Scene modes	beach, Children, Documents, Night, Portrait, Sports, Landscape (scenery)
White balance	auto, daylight, Fluorescent, manual, Shade, Tungsten
Self-timer delay	2, 10 s
Product color	Silver
Battery type	D-LI8
Flash modes	auto, Flash off, Red-eye reduction
Camera shutter type	Electronic

Weight and Dimensions

Depth	23 mm
Width	88.5 mm
Height	54.5 mm
Weight	125 g