Pentax announced the ultra-compact (in the most accurate sense of the phrase) Optio S at CES 2003 in January 2003. The Optio S measures just 83 x 52 x 20 mm (3.3 x 2.0 x 0.8 in) and weighs in at just 115 g (4.1 oz) ready to shoot, specifications we'd expect to see from an ultra-compact fixed lens digital camera, all the more amazing then that it has a three times optical zoom lens. Pentax has achieved this feat of miniaturization by altering the lens design so that when retracted three of the lens elements actually move upwards allowing the lens to take up less space. The only hint of this design from the outside is the vertically offset front lens element. The Optio S has a three megapixel sensor, lightweight Lithium-Ion rechargeable battery and stores images on SD / MMC cards.

Specifications

 More information  :  Announced 09-Jan-03 Max resolution      2048 x 1536
 Low resolution   :   1024 x 768, 640 x 480
 Image ratio w:h  :    4:3
 Effective pixels   :   3.1 million
 Sensor photo detectors   :   3.3 million
 Sensor size   :   1/2.5 "
 Sensor type   :   CCD
 Colour filter array   :   RGB
 Sensor manufacturer  :    Unknown
 ISO rating   :   Auto, 50, 100, 200
 Zoom wide (W)   :   35 mm
 Zoom tele (T)   :   105 mm (3 x)
 Digital zoom   :   Yes, 2 x
 Image stabilization   :   No
 Auto Focus   :   Yes
 Manual Focus   :   Yes
 Auto focus type    :  TTL
 Normal focus range   :   40 cm
 Macro focus range   :   6 cm
 White balance override  :    5 positions, plus manual one-touch
 Aperture range  :    F2.6 - F4.8 / ??
 Min shutter   :   1 sec
 Max shutter  :    1/2000 sec
 Built-in Flash   :   Yes
 Flash guide no.       
 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, Center weighted, Spot
 Aperture priority  :    No
 Shutter priority   :   No
 Focal length multiplier       
 Lens thread   :   No
 Continuous Drive   :   Yes
 Movie Clips  :    Yes, 30 sec
 Remote control  :    No
 Tripod mount   :   Yes
 Self-timer  :    Yes
 Timelapse recording  :    No
 Orientation sensor   :   No
 Storage types   :   SD/MMC card + Internal
 Storage included    :  16 MB SD card
 Uncompressed format  :    No
 Compressed format  :    JPEG (EXIF 2.2)
 Quality Levels  :    Normal, Fine, Superfine
 Viewfinder   :   Optical
 LCD   :   1.6 "
 LCD Pixels   :   84,000
 Video out    :  Yes
 USB   :   Yes
 Firewire (IEEE 1394)  :    No
 Battery / Charger  :    Yes
 Battery   :   Lithium-Ion rechargeable
 Weight (inc. batteries)    :  115 g (4.1 oz)
 Dimensions    :  83 x 52 x 20 mm (3.3 x 2 x 0.8 in)

Review

Few competitors can top the S4's style and features, but many deliver better pictures and performance.
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