• APS-C 369.7mm2
  • 12.4 megapixels
  • ISO 200 - 6400
  • 4/3 224.9mm2
  • 16.1 megapixels
  • ISO 200 - 25,600
  • Detailed specifications
  • Pentax K-x
  • Olympus OM-D E-M5
Links
Prices:    
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor: Pentax K2000
K2000 vs K-x
 
Successor: Pentax K-r
K-x vs K-r
Olympus E-M5 II
E-M5 vs E-M5 II
General
Model Number: K-x E-M5
Alternate Model Number(s):    
Camera Format: SLR Compact System Camera
Currently Manufactured: No No
Retail Price: $649.95 $1299.99
Street Price: $701.76 $899.95
Date Available: 2009-10-15 2012-04-15
Tripod Mount: Yes Yes
Weight: 27.9 oz (791 g)
includes batteries, kit lens
23.0 oz (652 g)
includes batteries, kit lens
Size: 4.8 x 3.6 x 2.7 in.
(122 x 92 x 69 mm)
4.8 x 3.5 x 1.7 in.
(122 x 89 x 43 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS Live MOS
Sensor Manufacturer:   Sony
Effective Megapixels: 12.4 16.1
Sensor Format: APS-C 4/3
Sensor size: 369.72mm2 (23.7mm x 15.6mm) 224.9mm2 (17.30mm x 13.00mm)
Approximate Pixel Pitch: 5.53 microns 3.75 microns
Focal Length Multiplier: 1.5x 2.0x
Aspect Ratio: 3:2 4:3
Color Filter Type: RGBG RGBG
Anti Aliasing Filter: Fixed Fixed
Self-Cleaning: Yes Yes
Sensor shift image stabilization: Yes Yes
On-Sensor Phase Detect: No No
DxO Sensor Score: 72 71
DxO Color Depth Score (bits): 22.8 22.8
DxO Dynamic Range Score (evs): 12.5 12.3
DxO Maximum Effective ISO Score (iso): 811 826
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)
4608 x 3456 (15.9 MP, 4:3),
2560 x 1920 (4.9 MP, 4:3),
1024 x 768 (0.8 MP, 4:3),
640 x 480 (0.3 MP, 4:3)
Image File Format: JPEG (EXIF 2.21), 12-bit RAW (.PEF, .DNG) JPEG, MPO, 12-bit RAW, RAW + JPEG
Continuous-mode frames/second: 4.3 8.9
Video Capture
Can take movies: Yes Yes
Movie Resolution: 1280x720 (24)
640x416 (24)
1920x1080 (60i)
1280x720 (60p/​30p)
640x480 (30p)
Movie File Format:   MOV (MPEG-4 AVC/H.264 with stereo sound), AVI (Motion JPEG)
Composite Video Out: Yes Yes
NTSC/PAL Switchable Video: Yes Yes
Video Usable as Viewfinder: No No
HD Video Out: No Yes
HD Video Connection: HDMI
Lens & Optics
Lens Mount: Pentax K (KA/KAF/KAF2/3) Micro Four Thirds
Lens: smc Pentax DA L 18-55mm f/3.5-5.6 AL Olympus M.Zuiko 12-50mm f/3.5-6.3 EZ Digital ED
Focal Length (35mm equivalent): 27 - 84mm 24 - 100mm
Focal Length (actual): 18 - 55mm 12 - 50mm
Zoom Ratio: 3.00x 4.20x
Aperture Range: f/3.5 - 22 (W), f/5.6 - 38 (T) f/3.5 - 22 (wide) / f/6.3 - 22 (tele)
Integrated ND Filter: No No
Normal Focus Range:   35 cm to Infinity
13.8 in to Infinity
Macro Focus Range:   20 - 50 cm
7.9 - 19.7 in
Filter Thread: 52.0mm 52.0mm
Thread Type: n/a n/a
Optical Image Stabilization: No No
Digital Zoom: No Yes
Digital Zoom Values: n/a Up to 2x
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 High-speed Contrast-detect AF: 35-area multiple AF / All target, Group target area (9-area), Single target
Auto Focus Assist Light? Yes Yes
Manual Focus: Yes Yes
Viewfinder
Viewfinder: Optical / LCD EVF / OLED
Viewfinder Type: SLR type; fixed eye-level pentamirror, 96% coverage, 0.85x mag., -2.5 to +1.5 diopter EVF; 1.44M-dot, 1.15x magnification, 18mm eyepoint, -4 to +2 diopter, eye sensor
Focus Peaking: No No
EVF Resolution: n/a 1,440,000 dots
Viewfinder Magnification (35mm equivalent): 0.57x 0.58x
Viewfinder Magnification (nominal/claimed): 0.85x 1.15x
Display
Eye-level Viewfinder: Yes Yes
Rear Display: Yes Yes
Rear Display Size (inches): 2.7 3.0
Rear Display Resolution: 230,000 dots 614,000 dots (205,000 px)
Touchscreen: No Yes
Articulating Screen: No Yes
Tilt Swivel Screen: No No
Selfie Screen: No No
Max Playback Zoom: 16.0x  
Top Deck Display: No No
Exposure
Maximum ISO (native): 6400 25600
Minimum ISO (native): 200 200
ISO Settings: Auto (200-6400), 100, 200, 400, 800, 1600, 3200, 6400; expandable to 12800 AUTO: ISO Low (100) - 25600 (customizable, Default 200-1600) / Manual ISO Low (100) - 25600, 1/3 or 1 EV steps selectable
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Daylight, Shade, Cloudy, Tungsten, Fluorescent (D, N, W, L), Flash, Custom Auto, Lamp, Fluorescent, Daylight, Flash, Cloudy, Shade, Custom WB, One-touch WB
Shutter Speed Range: 1/6000 - 30 sec 1/4000 - 60 sec
Bulb Mode: Yes Yes
Exposure Compensation: +/- 2.0EV in 0.3EV steps +/- 3.0EV in 0.3EV steps
Metering Modes: 16-segment Multi, Center-weighted, Spot Digital ESP metering (324-area multi pattern metering), Center weighted average metering, Spot metering, Spot metering with highlight control, Spot metering with shadow control
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 select AE (Portrait, e-Portrait, Landscape, Landscape + Portrait, Sport, Night, Night + Portrait, Children, High Key, Low Key, DIS mode, Macro, Nature Macro, Candle, Sunset, Documents, Panorama, Fireworks, Beach & Snow, Fisheye Conv., Wide Conv., Macro Conv., 3D Still), Art Filter, Underwater wide / macro
Self Timer: 2 or 12 seconds 2, 10 seconds
Time Lapse (intervalometer):    
High Resolution Composite: No No
Flash
Built-in Flash: Yes No
Flash Modes: On, off, redeye, slow sync, slow sync w redeye, slow sync w trailing curtain, wireless Flash Auto, Redeye, Fill-in, Flash Off, Red-eye Slow sync.(1st curtain), Slow sync.(1st curtain), Slow sync.(2nd curtain), Manual(1/1 (FULL) - 1/64)
Flash Guide Number (ISO 100): 11.3 m / 37.1 ft. 7.0 m / 23.0 ft.
Flash Range Description: Depends on lens Bundled FL-LM2 GN = 7m/ISO 100
Max Flash Sync: 1/180 1/250
Flash Exposure Compensation: -2 to +1 EV in 0.5EV steps +/- 3.0 EV in 0.3EV steps
External Flash Connection: Hot Shoe Hot Shoe
Built-In Wireless Flash Control: Full TTL exposure  
Image Storage
Usable Memory Types: SD / SDHC SD / SDHC / SDXC
UHS Support:   UHS-I
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: Yes Yes
Uncompressed Format: 12-bit RAW (.PEF, .DNG) 12-bit RAW, RAW + JPEG
Movie File Format:   MOV (MPEG-4 AVC/H.264 with stereo sound), AVI (Motion JPEG)
Included Memory: No memory included No memory included
Included Memory Type:    
Connectivity
Built-In Wi-Fi: No No
NFC: No No
Bluetooth: No No
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
PictBridge Compliant: No Yes
DPOF Compliant: Yes Yes
Remote Control: Yes Yes
Remote Control Type: Optional IR Optional Remote cable RM-UC1
Connections (extended): AC adapter available Micro HDMI (Type-D), combined AV/USB connector, Accessory Port 2
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): 0.39 0.52
Cycle time for RAW shooting in single shot mode (seconds per frame): 0.43 0.51
Buffer size for RAW shooting in single shot mode (frames): 10 20
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot):   0.56
Camera penalizes early shutter press? No No
JPEG shooting speed in burst mode (fps, max resolution): 4.3 8.9
Buffer size for JPEG shooting in burst mode (frames, max resolution): 25 17
RAW shooting speed in burst mode (fps):   9.0
Buffer size for RAW shooting in burst mode (frames):   16
RAW+JPEG shooting speed in burst mode (fps):   9.0
Buffer Size for RAW+JPEG shooting in burst mode (frames):   15
Shutter lag (full AF, wide/mid): 0.10 seconds 0.28 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 0.102 seconds
Shutter lag (full AF, with flash): 0.23 seconds 0.44 seconds
Shutter Lag (prefocused): 0.082 seconds 0.056 seconds
Shutter Lag (notes): Live View: Phase-detect Full AF: 0.448s Contrast-detect Full AF: 2.567s Prefocused: 0.427s Full Autofocus, Multi-area AF mode lag = 0.175 second
Startup Time: 0.6 seconds 1.1 seconds
Play -> Record Time: 0.2 seconds 0.7 seconds
Flash cycle time, full power: 3.3 seconds 4.3 seconds
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):   360 shots
Battery Life, Still (CIPA Rating OVF/EVF): 420 shots (NiMH AA)  
Battery Life, Video:    
Battery Form Factor: 4 x AA Proprietary BLN-1
Usable Battery Types: Lithium, Alkaline disposables; NiMH rechargeables Lithium-ion rechargeable
Batteries Included: 4 x AA Alkaline disposables 1 x Proprietary BLN-1 Lithium-ion rechargeable
Battery Charger Included (dedicated charger or AC/USB adapter): No Yes
Dedicated Battery Charger Included: Yes
Internal Charging Supported: No
Software
Included Software: CD-ROM Olympus Viewer 2 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. 3" tilting OLED monitor with Touchscreen panel, Hi-res EVF, 5-axis image stabilization, 9 fps burst, Full HD video.