• Samsung

    Samsung GX-20 DSLR: Pentax K20D's Guts, Different Body

    By matt buchanan, 1:30 PM on Thu Jan 24 2008, 7,375 views (Edit, to draft, Top, Slurp)

    Remember the Pentax K20D, with its Samsung co-developed CMOS image sensor? Well, Samsung has their own take on it—same imaging viscera, but with a different body and software. Oh, the JPEG processing is done in a slightly disparate way as well. Since the choice between the two largely comes down to looks, which one seems sexier to you? Spec sheet below.

    Price (body only) • UK: £ 699 Body material • High-impact plastic with metal sub-structure • Dust and weather resistant seals throughout Sensor

    • 14.6 million effective pixels
    • 3:2 aspect ratio
    • 23.4 x 15.6 mm CMOS sensor
    • RGB Color Filter Array
    • Built-in fixed low-pass filter
    • 15.1 million total pixels
    Image processor • PRIME
    • 22-bit ADC
    Stabilization Sensor shift
    Image sizes

    • 4688 x 3120 [14.6 MP] (RAW/DNG)
    • 4672 x 3120 [14.6 MP]
    • 3872 x 2592 [10 MP]
    • 3008 x 2000 [6 MP]
    • 1824 x 1216 [2 MP]
    File formats • RAW (DNG)
    • RAW + JPEG
    • JPEG (EXIF 2.21)
    RAW compression n/a
    Lens mount • PENTAX bayonet KAF2 mount
    • KAF2, KAF, KA mount lenses
    Usable lenses

    • Schneider D-XENON, D-XENOGON, SAMSUNG lens
    • PENTAX DSLR lenses are available
    • KAF2, KAF, KA mount lenses
    Auto Focus

    • TTL phase-matching 11-point AF
    • SAFVOX VIII
    • AF operational brightness range: EV -1 to 18 (at ISO 100 with f/1.4 lens)
    • Focus lock
    Lens Servo • Single Servo AF
    • Continuous Servo AF
    • Manual focus
    Focus Point 11 focus points
    AF Area Mode

    • Single point AF
    • Center AF
    • Automatic-area AF
    Focus Lock

    Half-press shutter
    AF assist External Speedlite only
    Exposure modes

    • Auto
    • Program
    • Shutter Priority AE
    • Aperture Priority AE
    • Sensitivity Priority AE
    • Shutter & Aperture Priority
    • Manual
    • Bulb
    • Flash X-sync
    • User Mode
    Metering

    • TTL open-aperture 16-segment
    • Metering : Multi, Center-weighted, Spot
    Metering range • EV0 ~ 18 (ISO 100, 50mm F1.4)
    Exposure lock Yes
    Exposure bracketing

    • 2 to 9 frames
    • 1/3, 1/2, 2/3 or 1 EV steps
    Exposure compen. • +/-3 EV (1/2EV step) , +/-2EV (1/3EV step)
    Sensitivity

    Auto, 100, 200, 400, 800, 1600, 3200 (1/3EV or 1/2EV step) 6400 (User setting)
    Shutter Electronically controlled vertical-run focal plane shutter
    DOF Preview Yes
    White balance Auto, Daylight, Shade, Cloudy, Tungsten, Fluorescent (W, D, N), Flash, Manual, Color Temperature (1, 2, 3), One Touch WB
    Image parameters /
    Presets

    • B&W(4 type)
    • Sepia(3 type)
    • Color (18 type)
    • Color extract (6 type)
    • Soft (three-level amount adjustable)
    • Illustration
    • HDR (3 type)
    • Slim (+/- 8 level amount adjustable)
    • Brightness (+/- 8 level amount adjustable)
    Color space • sRGB
    • Adobe RGB
    Viewfinder • Pentaprism
    • 95% Field of View
    • Diopter Adjustment -2.5 ~ +1.5m-1
    Focusing screen Natural-Bright-Matte II Focusing Screen
    LCD monitor Low-temperature polysilicon TFT color LCD Monitor, 2.7" (approximately 230K pixels), Brightness control, Wide angle view
    LCD Liveview

    • Live View(up to 3min.), Digital Preview
    • Field of view 100%, Magnification, Grid display
    Self-timer • 2sec., 12sec.
    • Remote control, Remote control 3sec. (Compatible with Pentax Remote Control, Optional)
    Shooting modes • Single
    • Continuous (Hi, Low)
    • High-speed Continuous
    • Self-timer (12sec., 2sec.)
    • Remote Control (3sec.)
    • Remote Control Continuous
    • Auto Bracket
    • Expand Bracket
    • Multi Exposure
    Continuous • JPEG : 3fps (depends on memory capacity)
    • RAW?3fps (up to 9 frames)
    Flash

    • Type Built-in retractable P-TTL auto pop-up flash
    • Modes Auto, Fill-in, Auto & Red eye, Fill-in & Red eye, Front curtain synchro, Front curtain synchro & Red eye, Rear curtain synchro
    • Guide Number 13 (at ISO 100)
    • Angle of View Coverage 28 mm wide-angle (Equivalent to 35mm)
    • Sync. Speed 1/180sec., Red-eye reduction (Control Range : -2 ~ +1 EV)
    External flash • Hot Shoe
    • X Synchro socket (Sync. Speed : 1/180sec.)
    • High Speed Synchro, Wireless Synchro (External Flash)
    Playback options

    • Single image, Thumbnail, Rotate, Slide Show (Transition Effect), Histogram

    • Edit: Rotate, Digital Filter, Picture Wizard * Picture Wizard : Normal, Vivid, Soft, Portrait, Landscape * Picture Wizard Parameter Range : ± 4 (9 steps)

    • Digital Filter: B&W (4 types), Sepia (3 types), Color Selection (18 types), Color (6 types), Soft (3 steps), Illustration, HDR (3 steps), Slim (±8 steps), Brightness (±8 steps)

    • Pixel Mapping
    Connectivity

    • Digital Output: USB 2.0 (HI-SPEED)
    • Video Output : NTSC, PAL (user selectable)
    • DC Power Input Connector : DC 8.3V, 2A (100 ~ 240V)
    • External Release Socket
    • X Synchro Socket for External Flash
    Storage

    • SD/MMC
    • SDHC
    Power Lithium ion battery : SLB-1674, Charger : SBC-L6,
    Dimensions 142mm × 101mm × 71.5mm (excluding the projecting parts of the camera)

    [DP Review]
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