- APS-C 369.7mm2
- 12.4 megapixels
- ISO 200 - 6400
- Go in depth with our full Pentax K-x Review.
- See real-world photos taken with the K-x.
- 1/2.3 inch 28.1mm2
- 20.2 megapixels
- 24.00mm - 840.00mm (35mm eq.)
- Go in depth with our full Nikon A900 Review.
| Links | ||
|---|---|---|
| Prices: | Compare Prices | |
| Manufacturer URL: | Manufacturer website | Manufacturer website |
| Predecessor: |
Pentax K2000
K2000 vs K-x |
Nikon S9900
S9900 vs A900 |
| Successor: |
Pentax K-r
K-x vs K-r |
Nikon A1000
A900 vs A1000 |
| General | ||
| Model Number: | K-x | A900 |
| Alternate Model Number(s): | ||
| Camera Format: | SLR | Compact |
| Currently Manufactured: | No | Yes |
| Retail Price: | $649.95 | $399.95 |
| Street Price: | $701.76 | $396.95 |
| Date Available: | 2009-10-15 | 2016-04-15 |
| Tripod Mount: | Yes | Yes |
| Weight: |
27.9 oz
(791 g)
includes batteries, kit lens |
10.2 oz
(289 g)
includes batteries |
| Size: |
4.8 x
3.6 x
2.7 in. (122 x 92 x 69 mm) |
4.4 x
2.6 x
1.6 in. (113 x 67 x 40 mm) |
| Waterproof: | No | No |
| Waterproof Depth: | n/a | n/a |
| Image Sensor | ||
| Sensor Type: | CMOS | CMOS |
| Sensor Manufacturer: | BSI | |
| Effective Megapixels: | 12.4 | 20.2 |
| Sensor Format: | APS-C | 1/2.3 inch |
| Sensor size: | 369.72mm2 (23.7mm x 15.6mm) | 28.0735mm2 (6.17mm x 4.55mm) |
| Approximate Pixel Pitch: | 5.53 microns | 1.19 microns |
| Focal Length Multiplier: | 1.5x | n/a |
| Aspect Ratio: | 3:2 | 4:3 |
| Color Filter Type: | RGBG | RGBG |
| Anti Aliasing Filter: | Fixed | None |
| Self-Cleaning: | Yes | No |
| Sensor shift image stabilization: | Yes | No |
| On-Sensor Phase Detect: | No | No |
| DxO Sensor Score: | 72 | |
| DxO Color Depth Score (bits): | 22.8 | |
| DxO Dynamic Range Score (evs): | 12.5 | |
| DxO Maximum Effective ISO Score (iso): | 811 | |
| Image Capture | ||
| Image Resolution: |
4288 x 2848
(12.2 MP,
Other), 3936 x 2624 (10.3 MP, 3:2), 3072 x 2048 (6.3 MP, 3:2), 1728 x 1152 (2.0 MP, 3:2) |
5184 x 3888 (20.2 MP, 4:3) |
| Image File Format: | JPEG (EXIF 2.21), 12-bit RAW (.PEF, .DNG) | JPEG (EXIF 2.3) |
| Continuous-mode frames/second: | 4.3 | 7.0 |
| Video Capture | ||
| Can take movies: | Yes | Yes |
| Movie Resolution: |
1280x720 (24)
640x416 (24) |
3840x2160 (30p/25p)
1920x1080 (60p/50p/30p/25p) 1280x720 (60p/50p/30p/25p) 640x480 (120p/100p) 1280x720 (60p/30p) 1920x1080 (15p/12.5p) |
| Movie File Format: | MP4 (Video: H.264/MPEG-4 AVC, Audio: AAC stereo) | |
| Composite Video Out: | Yes | No |
| NTSC/PAL Switchable Video: | Yes | n/a |
| Video Usable as Viewfinder: | No | n/a |
| HD Video Out: | No | Yes |
| HD Video Connection: | HDMI | |
| Lens & Optics | ||
| Lens Mount: | Pentax K (KA/KAF/KAF2/3) | n/a |
| Lens: | smc Pentax DA L 18-55mm f/3.5-5.6 AL | Zoom-Nikkor; 13 elements in 11 groups including 4 ED lens elements |
| Focal Length (35mm equivalent): | 27 - 84mm | 24 - 840mm |
| Focal Length (actual): | 18 - 55mm | 4.3 - 151mm |
| Zoom Ratio: | 3.00x | 35.00x |
| Aperture Range: | f/3.5 - 22 (W), f/5.6 - 38 (T) | f/3.4 (wde) / f/6.9 (tele) - ??; 3-blade iris diaphragm |
| Integrated ND Filter: | No | No |
| Normal Focus Range: |
50 cm to Infinity 19.7 in to Infinity |
|
| Macro Focus Range: |
1 cm to Infinity 0.4 in to Infinity |
|
| Filter Thread: | 52.0mm | n/a |
| Thread Type: | n/a | n/a |
| Optical Image Stabilization: | No | Yes |
| Digital Zoom: | No | Yes |
| Digital Zoom Values: | n/a | Up to 4x; up to 2x Dynamic Fine Zoom |
| Auto Focus | ||
| Auto Focus: | Yes | Yes |
| Auto Focus Type: | SAFOX VIII TTL phase-detect 11 point (9 cross) AF: 11 pt auto, 5 pt auto, AF pt select, center/spot | Contrast Detection: Center, Face priority, Manual with 99 focus areas, Subject tracking, Target finding AF |
| Auto Focus Assist Light? | Yes | Yes |
| Manual Focus: | Yes | No |
| Viewfinder | ||
| Viewfinder: | Optical / LCD | No / LCD |
| Viewfinder Type: | SLR type; fixed eye-level pentamirror, 96% coverage, 0.85x mag., -2.5 to +1.5 diopter | |
| Focus Peaking: | No | No |
| EVF Resolution: | n/a | n/a |
| Viewfinder Magnification (35mm equivalent): | 0.57x | 0.00x |
| Viewfinder Magnification (nominal/claimed): | 0.85x | 0.00x |
| Display | ||
| Eye-level Viewfinder: | Yes | No |
| Rear Display: | Yes | Yes |
| Rear Display Size (inches): | 2.7 | 3.0 |
| Rear Display Resolution: | 230,000 dots | 921,600 dots (230,400 px) |
| Touchscreen: | No | No |
| Articulating Screen: | No | Yes |
| Tilt Swivel Screen: | No | No |
| Selfie Screen: | No | Yes |
| Max Playback Zoom: | 16.0x | |
| Top Deck Display: | No | No |
| Exposure | ||
| Maximum ISO (native): | 6400 | 1600 |
| Minimum ISO (native): | 200 | 80 |
| ISO Settings: | Auto (200-6400), 100, 200, 400, 800, 1600, 3200, 6400; expandable to 12800 | Auto, ISO 80 - 1600; ISO 3200 (available when using P, S, A or M mode) |
| Auto ISO Mode: | Yes | Yes |
| White Balance Settings: | Auto, Daylight, Shade, Cloudy, Tungsten, Fluorescent (D, N, W, L), Flash, Custom | Auto, Cloudy, Daylight, Flash, Fluorescent, Incandescent, Preset Manual |
| Shutter Speed Range: | 1/6000 - 30 sec | 1/4000 - 8 sec |
| Bulb Mode: | Yes | No |
| Exposure Compensation: | +/- 2.0EV in 0.3EV steps | +/- 2.0EV in 0.3EV steps |
| Metering Modes: | 16-segment Multi, Center-weighted, Spot | Matrix, Center-weighted, Spot |
| Program Auto Exposure: | Yes | Yes |
| Aperture Priority: | Yes | Yes |
| Shutter Priority: | Yes | Yes |
| Full Manual Exposure: | Yes | Yes |
| Creative Exposure Modes: | Auto Picture (Portrait, Landscape, Macro, Action, Night Scene Portrait, Picture (Portrait, Landscape, Macro, Action, Night Scene Portrait, Standard Flash Off), Scene (Night Scene, Surf & Snow, Food, Sunset, Kids, Pet, Candlelight, Museum, Stage Lighting [JPG], Night Snap [JPG]), Sensitivity Priority | Scene Modes: Backlighting, Beach, Close-up, Dusk/Dawn, Easy Panorama, Fireworks Show, Food, Multiple Exposure Lighten, Night Landscape, Night Portrait, Party/Indoor, Pet Portrait, Portrait, Scene Auto Selector, Snow, Sports, Sunset, Superlapse Movie; Smart Portrait, Special Effects |
| Self Timer: | 2 or 12 seconds | 10 , 5 or 2 seconds |
| Time Lapse (intervalometer): | ||
| High Resolution Composite: | No | No |
| Flash | ||
| Built-in Flash: | Yes | Yes |
| Flash Modes: | On, off, redeye, slow sync, slow sync w redeye, slow sync w trailing curtain, wireless | Auto, Auto w/ Red-eye Reduction, Flash Off, Flash On, w/ Red-eye Reduction, Flash Off; Slow Syncro |
| Flash Guide Number (ISO 100): | 11.3 m / 37.1 ft. | n/a |
| Flash Range Description: | Depends on lens | Auto ISO: [W]: 0.5 to 6.0m (1 ft. 8 in. to 19 ft.), [T]: 1.5 to 3.2m (5 ft. to 11 ft.) |
| Max Flash Sync: | 1/180 | |
| Flash Exposure Compensation: | -2 to +1 EV in 0.5EV steps | |
| External Flash Connection: | Hot Shoe | n/a |
| Built-In Wireless Flash Control: | Full TTL exposure | No |
| Image Storage | ||
| Usable Memory Types: | SD / SDHC | SD / SDHC / SDXC |
| UHS Support: | No UHS support | |
| Other Memory: | ||
| Dual Card Slots: | No | No |
| RAW Capture Support: | Yes | No |
| Uncompressed Format: | 12-bit RAW (.PEF, .DNG) | |
| Movie File Format: | MP4 (Video: H.264/MPEG-4 AVC, Audio: AAC stereo) | |
| Included Memory: | No memory included | No memory included |
| Included Memory Type: | ||
| Connectivity | ||
| Built-In Wi-Fi: | No | Yes |
| NFC: | No | Yes |
| Bluetooth: | No | Yes |
| Built-In GPS: | No | No |
| Microphone Jack: | No | No |
| Headphone Jack: | No | No |
| External Connections: | USB 2.0 High Speed | USB 2.0 High Speed,Bluetooth,WiFi |
| PictBridge Compliant: | No | Yes |
| DPOF Compliant: | Yes | Yes |
| Remote Control: | Yes | Yes |
| Remote Control Type: | Optional IR | Via Wi-Fi |
| Connections (extended): | AC adapter available | Micro (Type D) HDMI |
| Performance Timing | ||
| Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): | 0.39 | |
| Cycle time for RAW shooting in single shot mode (seconds per frame): | 0.43 | |
| Buffer size for RAW shooting in single shot mode (frames): | 10 | |
| Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot): | ||
| Camera penalizes early shutter press? | No | |
| JPEG shooting speed in burst mode (fps, max resolution): | 4.3 | 7.0 |
| Buffer size for JPEG shooting in burst mode (frames, max resolution): | 25 | 7 |
| RAW shooting speed in burst mode (fps): | ||
| Buffer size for RAW shooting in burst mode (frames): | ||
| RAW+JPEG shooting speed in burst mode (fps): | ||
| Buffer Size for RAW+JPEG shooting in burst mode (frames): | ||
| Shutter lag (full AF, wide/mid): | 0.10 seconds | |
| Shutter lag (full AF, tele): | ||
| Shutter lag (full AF, live view - DSLR): | ||
| Shutter lag (prefocused, live view - DSLR): | ||
| Shutter Lag (manual focus): | 0.082 seconds | |
| Shutter lag (full AF, with flash): | 0.23 seconds | |
| Shutter Lag (prefocused): | 0.082 seconds | |
| Shutter Lag (notes): | Live View: Phase-detect Full AF: 0.448s Contrast-detect Full AF: 2.567s Prefocused: 0.427s | |
| Startup Time: | 0.6 seconds | |
| Play -> Record Time: | 0.2 seconds | |
| Flash cycle time, full power: | 3.3 seconds | |
| Power | ||
| Battery Life, Stills (CIPA Rating Monitor/Live View): | 270 shots | |
| Battery Life, Still (CIPA Rating OVF/EVF): | 420 shots (NiMH AA) | |
| Battery Life, Video: | 50 minutes | |
| Battery Form Factor: | 4 x AA | Proprietary EN-EL12 |
| Usable Battery Types: | Lithium, Alkaline disposables; NiMH rechargeables | Lithium-ion rechargeable |
| Batteries Included: | 4 x AA Alkaline disposables | 1 x Proprietary EN-EL12 Lithium-ion rechargeable |
| Battery Charger Included (dedicated charger or AC/USB adapter): | No | Yes |
| Dedicated Battery Charger Included: | No | |
| Internal Charging Supported: | Yes | |
| Software | ||
| Included Software: | CD-ROM | |
| OS Compatibility: | Windows XP/Vista/7, MacOS-X 10.3+ | |
| Miscellaneous | ||
| Notes & Features: | Sensor-shift shake reduction, 720p HD video capture, Live View with face detection. Available in black or white. Limited edition colors of red and navy will become available at select locations to be announced. | Available in silver and black. |
