The Optio W20 is the latest model in the PENTAX Optio W series of cameras that are capable of underwater photography without requiring a waterproof case or other accessories.  The waterproof design of the Optio W20 meets the JIS Class 8 waterproof standard, enabling it to withstand up to 30 minutes of continuous operation at an underwater depth of up to five feet.

Specifications

 More information :   Announced 07-Aug-06 
 Release Status       
 Max resolution   :   3072 x 2304
 Low resolution   :   2560 x 1920, 2304 x 1728, 2048 x 1536, 1600 x 1200, 1024 x 768, 640 x 480
 Image ratio w:h   :   4:3
 Effective pixels   :   7.1 million
 Sensor photo detectors  :    7.4 million
 Sensor size   :   1/2.5 "
 Sensor type  :    CCD
 Colour filter array   :   RGB
 Sensor manufacturer   :   Unknown
 ISO rating   :   Auto, 64, 100, 200, 400, (800 candle mode)
 Zoom wide (W)  :    38 mm
 Zoom tele (T)  :    114 mm (3 x)
 Digital zoom  :    Yes, 4 x
 Image stabilization   :   No
 Auto Focus  :    Yes
 Manual Focus    :  Yes
 Auto focus type   :   TTL
 Normal focus range  :    40 cm
 Macro focus range  :    1 cm
 White balance override  :    5 positions, plus manual one-touch
 Aperture range  :    F3.3 - F4.0 / ??
 Min shutter  :    4 sec
 Max shutter   :   1/2000 sec
 Built-in Flash   :   Yes
 Flash guide no.  :    3.6 m (11.8 ft) 6 m
 External flash  :    No
 Flash modes  :    Auto, On, Off, Red-eye reduction
 Exposure compensation  :    -2 EV to +2 EV in 1/3 EV steps
 Metering   :   Multi-segment
 Aperture priority  :    No
 Shutter priority   :   No
 Focal length multiplier       
 Lens thread  :    No
 Continuous Drive  :    Yes
 Movie Clips  :    Yes, 640 x 480, 320 x 240, 30/15 fps
 Remote control   :   No
 Tripod mount   :   Yes
 Self-timer  :    Yes
 Timelapse recording   :   No
 Orientation sensor   :   No
 Storage types  :    SD/MMC card + Internal
 Storage included   :   21.9 MB Internal
 Uncompressed format   :   No
 Compressed format   :   JPEG (EXIF 2.2)
 Quality Levels  :    Normal, Fine, Superfine
 Viewfinder  :    No
 LCD   :   2.5 "
 LCD Pixels  :    115,000
 Video out   :   Yes
 USB  :    Yes
 Firewire (IEEE 1394)   :   No
 Battery / Charger   :   Yes
 Battery   :   Lithium-Ion rechargeable
 Weight (inc. batteries)   :   150 g (5.3 oz)
 Dimensions   :   107 x 55 x 23 mm (4.2 x 2.2 x 0.9 in)
 Notes   :   Water Resistant (JIS class 8); 1.5 m for 30 mins

Review

he Optio W20 is the latest model in the PENTAX Optio W series of cameras that are waterproofed for underwater photography without requiring a waterproof case or other accessories. This model features a new Blur Reduction mode, which allows you take sharper photos without camera shake or subject blurring even of low-light scenes or fast-moving subjects, and an upgrade to a 7.0-effective-megapixel. All told, this camera boasts better image quality in a fun, easy-to-handle package.
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