Pentax Optio W90 Review

May 14, 2010 | Gavin Stoker |


Camera Type Water and shock proof digital zoom compact
Type 1/2.3" CCD
Total Pixels approx. 12.39 megapixels
Effective Pixels approx. 12.1 megapixels

12M (4000 x 3000)
10.7M (3:2) (4000 x 2672)
9M (16:9) (4000 x 2256)
9M (1:1) (2992 x 2922)
7M (3072 x 2304)
5M (2592 x 1944)
3M (2048 x 1536)
2.1M (16:9) (1920 x 1080)
1024 (1024 x 768)
640 (640 x 480)

3 quality levels of JPEG (good, better, best)

* Digital SR is fixed at 5M(2592x1944)
* Digital Wide is fixed at 5M(2592x1944)
* ISO 3200/6400 is fixed at 5M(2592x1944)
* High Speed Continuous Shooting is fixed at 5M(2592x1944)
* Half-length Portrait is fixed to 3M(2048x1536)
* Frame Composite is fixed at 3M(2048x1536)
* Digital Panorama is fixed at 2M(1600x1200) for one frame
* Report is fixed at (1280x960)

Movie HTV 1280 (1280x720) @ approx. 30 or 15fps
VGA 640 (640x480) @ approx. 30 or 15fps
QVGA 320 (320x240) @ approx. 30 or 15fps
Colour Depth 12 bits x 3 colours
Sensitivity Auto, Fixed (ISO 80 - 6400)
Shake Reduction Pixel Track SR
Hi-sensitivity anti-shake mode (Digital SR) Movie shake reduction mode (Movie SR)
Focal Length PENTAX 5 - 25mm f/3.5(W) - f/5.5(T), equ. to 28?140mm in 35mm
Digital Zoom Optical zoom: 5x
Digital zoom: approx. 6.25x
Intelligent zoom: approx. 6.5x at 7M, approx. 31.3x at 640 (including optical zoom)
Construction PENTAX zoom lens, 11 elements in 9 groups (5 aspherical elements)
Focusing System
Type TTL contrast detection auto focus system with AF assist lamp
Functions Infinity-landscape, Pan Focus, Manual Focus: available 9-point AF, Spot AF, Auto tracking AF
Focus Range (automatic)

Normal : 0.5m ? infinity (whole zoom area)
Macro : 0.1m ? 0.6m (whole zoom area)
1cm Macro : 0.01m ? 0.30m (middle zoom position)

AF assist

AF assist lamp
Special Macrolight (3 LED at front)

Type 2.7’’ (6.86mm) colour 16:9 LCD, extra wide angle viewing with Anti-Reflective Coating
Resolution approx. 230k dots
Playback One Shot, Index (4  thumb nails, 9 thumb nails), Enlargement (up to 10X, scroll available), Movie Playback, Sound Playback, Histogram, Bright and Dark portion, Folder display, Select&Delete, Calendar
Speed 1/1500  - 1/4sec.
4 sec at most. (Night Scene mode setting)
Exposure system
Metering Multi-segment metering, Centre-weighted metering, Spot metering
Exposure Modes

Auto Picture, Program, Night Scene, Night Scene Portrait, Half-length Portrait, Movie, Underwater photo, Underwater movie, Landscape, Flower, Portrait, Digital Microscope, Digital Wide, Digital SR, Surf & Snow, Kids, Pet, Sport, Fireworks, Candlelight, Text, Food, Digital Panorama, Frame composite, Report, Green

Compensation ±2EV (1/3EV steps)

Integrated auto flash control

Modes Flash-on and Flash-off modes.  "Red-eye" reduction function employs a pre-discharge.  Soft Flash
Effective Range Wide:approx. 0.3 -  3.9 m (ISO Auto)
Tele:approx. 0.3 - 2.5m (ISO Auto)
Exposure Parameters
Modes One shot, Self-timer (2 or 10 sec), Continuous Shooting (2.7 fps), High Speed Continuous Shooting (5 fps at ISO 3200/6400 setting) for up to 6 frames, Burst shooting, IR remote control, Interval Shooting, Auto bracket
Face Recognition Face recognition AF&AE is available for all modes up to 32 faces. Smile Capture. Blink Detection.
White Balance Auto, Daylight, Shade, Tungsten light, Fluorescent light, Manual setting
Digital Filter B&W, Sepia, Colour filters(6), Colour extract, Colour enhancer, Toy Camera, Retro, High contrast, Starburst, Soft, Fisheye, Brightness
Recording Sound : Yes
Movie “Shake reduction” ? stabilized video
Duration : Depends on memory card capacity
Resolution : HDTV (1280x720), 30 or 15fps ; VGA (640x480) 30 or 15fps ; QVGA (320x240), 30 or 15fps
Editing Save as still image, Dividing Movies
Digital Filter B&W, Sepia, Colour filters(6), Colour extract, Colour enhancer, Toy Camera, Retro, High contrast, Starburst, Soft, Fisheye, Brightness

Small face filter, Ink rubbing filter, Collage, Slideshow, Histogram, Bright and dark portion, Calendar, Resize, Cropping, Image rotation, Original frame, Frame composite, Movie edit, Subscreen input, Red-eye compensation, Voice recording, DPOF, Protect, Image recovery, Picture selection as Start image, Date printing, Pet recognition, Face close up playback,

Internal approx 26.7MB
External SD / SDHC memory cards, compatible with Eye-Fi wireless memory cards
Storage Capacity
Resolution / JPEG quality *** ** *
12MP 855 1675 2567
9MP (16:9) 1014 2011 3175
7MP 1283 2366 795
5.3MP (16:9) 1527 2943 4161
5MP 1527 2943 4160
3.8MP (16:9) 1915 3770 5746
3MP 2366 4641 6703
2.1MP (16:9) 3447 6703 9282
1280 5484 10055 13407
1024 8044 13407 17238
640 17238 24133 30167

Based on 4GB memory card

File Format JPEG (conforms to Exif 2.2), conforms to DCF2.0, DPOF, PRINT Image Matching III, AVI (Motion JPEG), with WAV(PCM), mono
Special Features

World time :
75 cities, 28 time zones

Others :
Noise reduction if shutter speed exceeds 0.25 sec. Motion Blur reduction. Digital Shake Reduction system.

EyeFi* cards compatible

Language English, French, Germany, Spanish, Portuguese, Italian, Dutch, Japanese, Danish, Swedish, Finnish, Polish, Czech, Hungarian, Turkish, Greek, Russian, Thai, Korean, Simplified Chinese, Traditional Chinese
Interface Micro HDMI output, USB 2.0 (Hi-Speed), PC/AV terminal (NTSC/PAL, mono) and AC power input

Rechargeable D-LI88 lithium-ion battery

Optional AC adapter kit


Still*: Approx. 205 shots
Playback: Approx. 250 min

* Recording capacity shows approximate number of shots recorded during CIPA-compliant testing.  Actual performance may vary depending on operating conditions.

Height 59mm
Width 107.5mm
Depth 25mm

144g (without battery and memory card)

161g (loaded and ready)

Windows XP SP2, Windows Vista and 7
Mac Mac OS X 10.3.9 or above
Included Software Arcsoft Media Impression for PENTAX
Kit Content AV cable, USB cable, AC cable, Li-ion battery, battery charger, carabiner strap, strap and software