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Attractive design; easy-to-pocket ultracompact; large display; can shoot low-res 30fps movie clips limited only by size of SD/MMC card; in-camera help function; can apply filters to photos after capture.
Specifications More information : Announced 11-May-05 Max resolution : 2560 x 1920 Low resolution : 2304 x 1728, 2048 x 1536, 1600 x 1200, 640 x 480 Image ratio w:h : 4:3 Effective pixels : 5.0 million Sensor photo detectors : 5.4 million Sensor size : 1/2.5 " Sensor type : CCD Colour filter array : RGB Sensor manufacturer : Unknown ISO rating : Auto, 50, 100, 200, 400 Zoom wide (W) : 35.6 mm Zoom tele (T) : 107 mm (3 x) Digital zoom : Yes, 2.6x 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 : 4 sec Max shutter : 1/2000 sec Built-in Flash : Yes Flash guide no. : 4.9 m (16 ft) 9 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, Center weighted, Spot Aperture priority : No Shutter priority : No Focal length multiplier Lens thread : No Continuous Drive : Yes Movie Clips : Yes, 320 x 240, 15/30 fps Remote control : No Tripod mount : Yes Self-timer : Yes Timelapse recording : No Orientation sensor : No Storage types : SD/MMC card + Internal Storage included : 11 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 : AA (2) batteries (NiMH recommended) Weight (inc. batteries) : 155 g (5.5 oz) Dimensions : 89 x 59 x 28 mm (3.5 x 2.3 x 1.1 in) ReviewThe Pentax Optio S55 is a fun ultracompact camera with some handy features, but the camera's slow continuous shooting and inconsistent image quality might compromise your enjoyment. http://reviews.cnet.com/
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