Pentax K-x vs Sigma dp1 Quattro 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.

APS-C 369.0mm²
19.6 megapixels
28.00mm (35mm eq.)

Go in depth with our full Sigma dp1 Quattro Review.

Detailed specifications
Pentax K-x
Sigma dp1 Quattro

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	dp1 Quattro
Alternate Model Number(s):
Camera Format:	SLR	Mid-Sized
Currently Manufactured:	No	Yes
Retail Price:	$649.95	$999.00
Street Price:	$701.76	$999.00
Date Available:	2009-10-15	2014-10-15
Tripod Mount:	Yes	Yes
Weight:	27.9 oz (791 g) includes batteries, kit lens	15.0 oz (425 g)
Size:	4.8 x 3.6 x 2.7 in. (122 x 92 x 69 mm)	6.4 x 2.6 x 3.4 in. (161 x 67 x 87 mm)
Waterproof:	No	No
Waterproof Depth:	n/a	n/a

Image Sensor
Sensor Type:	CMOS	CMOS
Sensor Manufacturer:		Foveon X3 Quattro
Effective Megapixels:	12.4	19.6
Sensor Format:	APS-C	APS-C
Sensor size:	369.72mm² (23.7mm x 15.6mm)	368.95mm² (23.50mm x 15.70mm)
Approximate Pixel Pitch:	5.53 microns	4.33 microns
Focal Length Multiplier:	1.5x	1.5x
Aspect Ratio:	3:2	3:2
Color Filter Type:	RGBG	Full Color
Anti Aliasing Filter:	Fixed	Not needed
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)	5424 x 3616 (19.6 MP, 3:2), 4816 x 3616 (17.4 MP, 4:3), 5424 x 3048 (16.5 MP, 16:9), 3616 x 3616 (13.1 MP, 1:1), 5424 x 2328 (12.6 MP, Other), 2704 x 1808 (4.9 MP, 3:2), 2400 x 1808 (4.3 MP, 4:3), 2704 x 1520 (4.1 MP, 16:9), 1808 x 1808 (3.3 MP, 1:1), 2704 x 1160 (3.1 MP, Other), 7680 x 5120 (39.3 MP, 3:2), 6816 x 5120 (34.9 MP, 4:3), 7680 x 4320 (33.2 MP, 16:9), 5120 x 5120 (26.2 MP, 1:1), 7680 x 3296 (25.3 MP, Other)
Image File Format:	JPEG (EXIF 2.21), 12-bit RAW (.PEF, .DNG)	JPEG (EXIF 2.3), 14-bit RAW (.X3F), RAW+JPEG
Continuous-mode frames/second:	4.3	n/a
Video Capture
Can take movies:	Yes	No
Movie Resolution:	1280x720 (24) 640x416 (24)
Movie File Format:
Composite Video Out:	Yes	No
NTSC/PAL Switchable Video:	Yes	n/a
Video Usable as Viewfinder:	No	n/a
HD Video Out:	No	No
HD Video Connection:

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	Sigma Lens; 9 elements in 8 groups
Focal Length (35mm equivalent):	27 - 84mm	28mm
Focal Length (actual):	18 - 55mm	19mm
Zoom Ratio:	3.00x	1.00x
Aperture Range:	f/3.5 - 22 (W), f/5.6 - 38 (T)	f/2.8 - f/16, with 9-bladed diaphragm
Integrated ND Filter:	No	No
Normal Focus Range:		100 cm to Infinity 39.4 in to Infinity
Macro Focus Range:		20 cm to Infinity 7.9 in to Infinity
Filter Thread:	52.0mm	58.0mm
Thread Type:	n/a	n/a
Optical Image Stabilization:	No	No
Digital Zoom:	No
Digital Zoom Values:	n/a
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 points select mode, Free move mode (It is possible to change the size of Focus Frame to Spot, Regular and Large), Face Detection AF mode
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	Optional VF-31 hotshoe-mounted optical viewfinder available
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	921,600 dots (307,200 px)
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	No

Exposure
Maximum ISO (native):	6400	6400
Minimum ISO (native):	200	100
ISO Settings:	Auto (200-6400), 100, 200, 400, 800, 1600, 3200, 6400; expandable to 12800	Auto, 100-6400 in 1/3 EV steps; Auto has programmable High/Low limits
Auto ISO Mode:	Yes	Yes
White Balance Settings:	Auto, Daylight, Shade, Cloudy, Tungsten, Fluorescent (D, N, W, L), Flash, Custom	Auto, Auto (Lighting Source Priority), Daylight, Shade, Overcast, Incandescent, Fluorescent, Color Temperature, Flash, Custom
Shutter Speed Range:	1/6000 - 30 sec	1/2000 - 30 sec
Bulb Mode:	Yes	No
Exposure Compensation:	+/- 2.0EV in 0.3EV steps	+/- 3.0EV in 0.3EV steps
Metering Modes:	16-segment Multi, Center-weighted, Spot	Evaluative, center-weighted average, 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	Color modes: Standard, Vivid, Neutral, Portrait, Landscape, Cinema, Sunset Red, Forest Green, FOV Classic Blue, FOV Classic Yellow, Monochrome
Self Timer:	2 or 12 seconds	2 or 10 seconds
Time Lapse (intervalometer):		Yes
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	Normal, Redeye, Slow Sync., Redeye + Slow Sync (with compatible external flash unit)
Flash Guide Number (ISO 100):	11.3 m / 37.1 ft.	n/a
Flash Range Description:	Depends on lens	Optional EF-140S compact flash has GN=14m (ISO 100)
Max Flash Sync:	1/180	1/1250 at F2.8, 1/1600 at F4 and 1/2000 at F5.6
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)	14-bit RAW (.X3F), RAW+JPEG
Movie File Format:
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	No
DPOF Compliant:	Yes	Yes
Remote Control:	Yes	Yes
Remote Control Type:	Optional IR	Via USB cable switch
Connections (extended):	AC adapter available

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
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):	0.10 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):		200 shots
Battery Life, Still (CIPA Rating OVF/EVF):	420 shots (NiMH AA)
Battery Life, Video:
Battery Form Factor:	4 x AA	Proprietary BP-51
Usable Battery Types:	Lithium, Alkaline disposables; NiMH rechargeables	Lithium-ion rechargeable
Batteries Included:	4 x AA Alkaline disposables	2 x Proprietary BP-51 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	SIGMA Photo Pro
OS Compatibility:	Windows XP/Vista/7, MacOS-X 10.3+	Windows, Mac OS
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.	New Foveon X3 Quattro sensor and TRUE III image processing engine.