• 1/2.33 inch 28.2mm2
  • 12.2 megapixels
  • 27.00mm - 124.00mm (35mm eq.)
  • APS-C 369.7mm2
  • 12.4 megapixels
  • ISO 200 - 6400
  • Detailed specifications
  • Samsung TL225
  • Pentax K-x
Links
Prices:    
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:   Pentax K2000
K2000 vs K-x
Successor:   Pentax K-r
K-x vs K-r
General
Model Number: TL225 K-x
Alternate Model Number(s): ST550  
Camera Format: Compact SLR
Currently Manufactured: No No
Retail Price: $350.00 $649.95
Street Price:   $701.76
Date Available: 2009-09-30 2009-10-15
Tripod Mount: Yes Yes
Weight: 5.8 oz (164 g)
includes batteries
27.9 oz (791 g)
includes batteries, kit lens
Size: 3.9 x 2.4 x 0.7 in.
(100 x 60 x 19 mm)
4.8 x 3.6 x 2.7 in.
(122 x 92 x 69 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CCD CMOS
Sensor Manufacturer:    
Effective Megapixels: 12.2 12.4
Sensor Format: 1/2.33 inch APS-C
Sensor size: 28.198mm2 (6.13mm x 4.6mm) 369.72mm2 (23.7mm x 15.6mm)
Approximate Pixel Pitch: 1.53 microns 5.53 microns
Focal Length Multiplier: n/a 1.5x
Aspect Ratio: 4:3, 16:9 3:2
Color Filter Type:   RGBG
Anti Aliasing Filter:   Fixed
Self-Cleaning: No Yes
Sensor shift image stabilization: No Yes
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: 4000 x 3000 (12.0 MP, 4:3),
3984 x 2656 (10.6 MP, 3:2),
3840 x 2160 (8.3 MP, 16:9),
3264 x 2448 (8.0 MP, 4:3),
2560 x 1920 (4.9 MP, 4:3),
2048 x 1536 (3.1 MP, 4:3),
1920 x 1080 (2.1 MP, 16:9),
1024 x 768 (0.8 MP, 4:3)
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)
Image File Format: JPEG (Exif 2.21) JPEG (EXIF 2.21), 12-bit RAW (.PEF, .DNG)
Continuous-mode frames/second: n/a 4.3
Video Capture
Can take movies: Yes Yes
Movie Resolution: 1280x720 (30/​15)
640x480 (30/​15)
320x240 (60/​30/​15)
1280x720 (24)
640x416 (24)
Movie File Format: H.264 (MPEG4.AVC)  
Composite Video Out: Yes Yes
NTSC/PAL Switchable Video: Yes Yes
Video Usable as Viewfinder: No
HD Video Out: Yes No
HD Video Connection: HDMI
Lens & Optics
Lens Mount: n/a Pentax K (KA/KAF/KAF2/3)
Lens: Schneider-Kreuznach Varioplan smc Pentax DA L 18-55mm f/3.5-5.6 AL
Focal Length (35mm equivalent): 27 - 124mm 27 - 84mm
Focal Length (actual): 4.9 - 22.5mm 18 - 55mm
Zoom Ratio: 4.60x 3.00x
Aperture Range: f/3.5 (wide) / f/5.9 (tele) - ??? f/3.5 - 22 (W), f/5.6 - 38 (T)
Integrated ND Filter: No No
Normal Focus Range: 80 cm to Infinity
31.5 in to Infinity
 
Macro Focus Range: 5 - 80 cm
2.0 - 31.5 in
 
Filter Thread: n/a 52.0mm
Thread Type: n/a n/a
Optical Image Stabilization: Yes No
Digital Zoom: Yes No
Digital Zoom Values: 5x n/a
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: Contrast Detection TTL SAFOX VIII TTL phase-detect 11 point (9 cross) AF: 11 pt auto, 5 pt auto, AF pt select, center/spot
Auto Focus Assist Light? Yes Yes
Manual Focus: No Yes
Viewfinder
Viewfinder: LCD Optical / 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
Viewfinder Magnification (nominal/claimed):   0.85x
Display
Eye-level Viewfinder: No Yes
Rear Display: Yes Yes
Rear Display Size (inches): 3.5 2.7
Rear Display Resolution: 1,152,000 dots 230,000 dots
Touchscreen: No No
Articulating Screen: No No
Tilt Swivel Screen: No No
Selfie Screen: No No
Max Playback Zoom:   16.0x
Top Deck Display: No
Exposure
Maximum ISO (native):   6400
Minimum ISO (native):   200
ISO Settings: 80, 100, 200, 400, 800, 1600, 3200 Auto (200-6400), 100, 200, 400, 800, 1600, 3200, 6400; expandable to 12800
Auto ISO Mode: No Yes
White Balance Settings: Auto, Daylight, Cloudy, Fluorescent H, Fluorescent L, Tungsten, Manual Auto, Daylight, Shade, Cloudy, Tungsten, Fluorescent (D, N, W, L), Flash, Custom
Shutter Speed Range: 1/2000 - 8 sec 1/6000 - 30 sec
Bulb Mode: No Yes
Exposure Compensation: +/- 2.0EV in 0.3EV steps +/- 2.0EV in 0.3EV steps
Metering Modes: Multi-pattern, center-weighted, spot, face detection 16-segment Multi, Center-weighted, Spot
Program Auto Exposure: Yes Yes
Aperture Priority: No Yes
Shutter Priority: No Yes
Full Manual Exposure: No Yes
Creative Exposure Modes: Action, Backlight, Backlight Portrait, Beach, Beauty shot, Blue Sky, Children, Close up Text, Dawn, Fireworks, Frame Guide, Landscape, Macro, Macro Portrait, Macro Text, Natural Green, Natural Portrait, Night, Night Portrait, Portrait, Snow, Sunset, Tripod, White 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
Self Timer: 2 or 10 seconds 2 or 12 seconds
Time Lapse (intervalometer): No  
High Resolution Composite: No No
Flash
Built-in Flash: Yes Yes
Flash Modes: Auto, Auto w/ red-eye reduction, On, Slow-sync, Off On, off, redeye, slow sync, slow sync w redeye, slow sync w trailing curtain, wireless
Flash Guide Number (ISO 100): n/a 11.3 m / 37.1 ft.
Flash Range Description: n/a Depends on lens
Max Flash Sync:   1/180
Flash Exposure Compensation:   -2 to +1 EV in 0.5EV steps
External Flash Connection: n/a Hot Shoe
Built-In Wireless Flash Control:   Full TTL exposure
Image Storage
Usable Memory Types: microSD / microSDHC SD / SDHC
UHS Support:    
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: No Yes
Uncompressed Format:   12-bit RAW (.PEF, .DNG)
Movie File Format: H.264 (MPEG4.AVC)  
Included Memory: 55.0 MB No memory included
Included Memory Type: built-in memory  
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: Yes No
DPOF Compliant: Yes Yes
Remote Control: Yes Yes
Remote Control Type: Optional Wireless Optional IR
Connections (extended): HDMI connectivity requires optional adapter. AC adapter available
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): 1.91 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? Yes No
JPEG shooting speed in burst mode (fps, max resolution):   4.3
Buffer size for JPEG shooting in burst mode (frames, max resolution):   25
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): 0.36 seconds 0.10 seconds
Shutter lag (full AF, tele): 0.47 seconds  
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): 0.126 seconds 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: 1.9 seconds 0.6 seconds
Play -> Record Time:   0.2 seconds
Flash cycle time, full power: 4.5 seconds 3.3 seconds
Power
Battery Life, Stills (CIPA Rating Monitor/Live View): 180 shots  
Battery Life, Still (CIPA Rating OVF/EVF):   420 shots (NiMH AA)
Battery Life, Video:    
Battery Form Factor: Proprietary SLB-07A 4 x AA
Usable Battery Types: Lithium-ion rechargeable Lithium, Alkaline disposables; NiMH rechargeables
Batteries Included: 1 x Proprietary SLB-07A Lithium-ion rechargeable 4 x AA Alkaline disposables
Battery Charger Included (dedicated charger or AC/USB adapter): Yes No
Dedicated Battery Charger Included:
Internal Charging Supported:
Software
Included Software:   CD-ROM
OS Compatibility:   Windows XP/Vista/7, MacOS-X 10.3+
Miscellaneous
Notes & Features: Rear-panel LCD is a touch-panel with gesture support and haptic feedback. You can mark an X on an image to delete it, or an O to rotate it. When an on-screen button is touched the screen vibrates gently as a form of tactile confirmation. Also has "hidden" secondary low-res 1.5", 61,000 dot LCD touch panel on front of camera which is used as a viewfinder for self portrait modes, and can also show a timer countdown, the camera's key settings, a "Smiley" prompt for the Smile Shutter feature, or an animation to attract a child's attention and have them look at the camera. 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.