Pentax K-x vs Ricoh WG-4 Specifications

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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
16.0 megapixels
25.00mm - 100.00mm (35mm eq.)

Go in depth with our full Ricoh WG-4 Review.

Detailed specifications
Pentax K-x
Ricoh WG-4

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:	K-x	WG-4
Alternate Model Number(s):
Camera Format:	SLR	Compact
Currently Manufactured:	No	No
Retail Price:	$649.95	$329.95
Street Price:	$701.76
Date Available:	2009-10-15	2014-03-15
Tripod Mount:	Yes	Yes
Weight:	27.9 oz (791 g) includes batteries, kit lens	8.1 oz (230 g) includes batteries
Size:	4.8 x 3.6 x 2.7 in. (122 x 92 x 69 mm)	4.9 x 2.5 x 1.3 in. (125 x 64 x 33 mm)
Waterproof:	No	Yes
Waterproof Depth:	n/a

Image Sensor
Sensor Type:	CMOS	CMOS
Sensor Manufacturer:
Effective Megapixels:	12.4	16.0
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	1.34 microns
Focal Length Multiplier:	1.5x	n/a
Aspect Ratio:	3:2	4:3
Color Filter Type:	RGBG	RGBG
Anti Aliasing Filter:	Fixed
Self-Cleaning:	Yes	No
Sensor shift image stabilization:	Yes	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:	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), 3456 x 3456 (11.9 MP, 1:1), 4608 x 2592 (11.9 MP, 16:9), 3072 x 2304 (7.1 MP, 4:3), 3072 x 1728 (5.3 MP, 16:9), 2592 x 1944 (5.0 MP, 4:3), 2592 x 1464 (3.8 MP, Other), 2048 x 1536 (3.1 MP, 4:3), 1920 x 1080 (2.1 MP, 16:9), 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 (EXIF 2.3)
Continuous-mode frames/second:	4.3	1.5
Video Capture
Can take movies:	Yes	Yes
Movie Resolution:	1280x720 (24) 640x416 (24)	1920x1080 (30p) 1280x720 (60p/30p) 640x360 (120p)
Movie File Format:		MP4 (AVC H.264 video with 32KHz 16-bit stereo PCM audio)
Composite Video Out:	Yes	Yes
NTSC/PAL Switchable Video:	Yes	Yes
Video Usable as Viewfinder:	No
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	Ricoh zoom lens; 9 elements in 7 groups, 4 aspherical elements, protective cover with SP coating
Focal Length (35mm equivalent):	27 - 84mm	25 - 100mm
Focal Length (actual):	18 - 55mm	4.5 - 18mm
Zoom Ratio:	3.00x	4.00x
Aperture Range:	f/3.5 - 22 (W), f/5.6 - 38 (T)	f/2.0 (wide) / f/4.9 (tele) - ???
Integrated ND Filter:	No	No
Normal Focus Range:		40 cm to Infinity 15.7 in to Infinity
Macro Focus Range:		1 - 30 cm 0.4 - 11.8 in
Filter Thread:	52.0mm	n/a
Thread Type:	n/a	n/a
Optical Image Stabilization:	No	No
Digital Zoom:	No	Yes
Digital Zoom Values:	n/a	Up to 7.2x; Intelligent Zoom up to 28.8x total at VGA
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: 9 point AF, Spot AF, Auto Tracking AF, Macro, 1cm Macro, Infinity Landscape, Pan Focus, Manual Focus
Auto Focus Assist Light?	Yes	Yes
Manual Focus:	Yes	Yes
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
Viewfinder Magnification (nominal/claimed):	0.85x
Display
Eye-level Viewfinder:	Yes	No
Rear Display:	Yes	Yes
Rear Display Size (inches):	2.7	3.0
Rear Display Resolution:	230,000 dots	460,000 dots
Touchscreen:	No	No
Articulating Screen:	No	No
Tilt Swivel Screen:	No	No
Selfie Screen:	No	No
Max Playback Zoom:	16.0x	10.0x
Top Deck Display:	No

Exposure
Maximum ISO (native):	6400	6400
Minimum ISO (native):	200	125
ISO Settings:	Auto (200-6400), 100, 200, 400, 800, 1600, 3200, 6400; expandable to 12800	Auto (125-6400, adjustable), 125, 200, 400, 800, 1600, 3200, 6400
Auto ISO Mode:	Yes	Yes
White Balance Settings:	Auto, Daylight, Shade, Cloudy, Tungsten, Fluorescent (D, N, W, L), Flash, Custom	Auto, Daylight, Shade, Tungsten Light, Fluorescent Light (D: Daylight Color, N: Daylight White, W: White Light), Manual
Shutter Speed Range:	1/6000 - 30 sec	1/4000 - 4 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	Multi-segment, Center-weighted, Spot
Program Auto Exposure:	Yes	Yes
Aperture Priority:	Yes	No
Shutter Priority:	Yes	Yes
Full Manual Exposure:	Yes	No
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	USER, HDR, Night Scene, Handheld Night Snap (ISO 125-1600), Movie, Underwater, Underwater Movie, Digital Microscope (2M), Landscape, Flower, Portrait, Interval Shot, Interval Movie, High Speed Movie (VGA, 120 FPS capture, 30 FPS playback), Time-Lapse Movie, 1CM Macro Movie, Digital SR, Surf & Snow, Kids, Pet, Sport, Fireworks, Night Scene Portrait, Food, Digital Wide (5M), Digital Panorama (2M per frame), Report (1280x960, ISO 125-1600)
Self Timer:	2 or 12 seconds	2 or 10 seconds
Time Lapse (intervalometer):		Yes
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, Flash Off, Flash On, Auto + Redeye, On + Redeye
Flash Guide Number (ISO 100):	11.3 m / 37.1 ft.	n/a
Flash Range Description:	Depends on lens	34 ft (wide, auto ISO), 14 ft (tele, auto ISO)
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
Image Storage
Usable Memory Types:	SD / SDHC	SD / SDHC / SDXC
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 (AVC H.264 video with 32KHz 16-bit stereo PCM audio)
Included Memory:	No memory included	70.0 MB
Included Memory Type:		Internal
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	No
DPOF Compliant:	Yes	Yes
Remote Control:	Yes	Yes
Remote Control Type:	Optional IR	Optional IR
Connections (extended):	AC adapter available	Micro HDMI (Type D)

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	1.5
Buffer size for JPEG shooting in burst mode (frames, max resolution):	25	Unlimited
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):		240 shots
Battery Life, Still (CIPA Rating OVF/EVF):	420 shots (NiMH AA)
Battery Life, Video:
Battery Form Factor:	4 x AA	Proprietary D-LI92
Usable Battery Types:	Lithium, Alkaline disposables; NiMH rechargeables	Lithium-ion rechargeable
Batteries Included:	4 x AA Alkaline disposables	1 x Proprietary D-LI92 Lithium-ion rechargeable
Battery Charger Included (dedicated charger or AC/USB adapter):	No	Yes
Dedicated Battery Charger Included:
Internal Charging Supported:
Software
Included Software:	CD-ROM	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.	Waterproof (45.9'), Shockproof (6.5'), Crushproof (220 LBF), Coldproof (14F), Dustproof (JIS 6); Available in silver or lime.