Pentax K-3 vs Sony RX100 III Specifications

APS-C 366.6mm²
24.4 megapixels
ISO 100 - 51,200

Go in depth with our full Pentax K-3 Review.
How does it shoot? Pentax K-3 in the real world.
See real-world photos taken with the K-3.
Compare Pentax K-3 image quality against competitors.
What’s the bottom line? Read our Pentax K-3 conclusion.

1 inch 116.2mm²
20.2 megapixels
24.00mm - 70.00mm (35mm eq.)

Go in depth with our full Sony RX100 III Review.
How does it shoot? Sony RX100 III in the real world.
See real-world photos taken with the RX100 III.
Compare Sony RX100 III image quality against competitors.
What’s the bottom line? Read our Sony RX100 III conclusion.

Detailed specifications
Pentax K-3
Sony Cyber-shot DSC-RX100 III

Links
Prices:	Compare Prices	Compare Prices
Manufacturer URL:	Manufacturer website	Manufacturer website
Predecessor:		Sony RX100 II RX100 II vs RX100 III
Successor:	Pentax K-3 II K-3 vs K-3 II	Sony RX100 IV RX100 III vs RX100 IV
General
Model Number:	K-3	RX100 III
Alternate Model Number(s):		DSC-RX100M3
Camera Format:	Pro SLR	Compact
Currently Manufactured:	No	Yes
Retail Price:	$1149.95	$799.99
Street Price:	$699.00	$748.00
Date Available:	2013-11-01	2014-06-15
Tripod Mount:	Yes	Yes
Weight:	43.7 oz (1,240 g) includes batteries, kit lens	10.1 oz (287 g) includes batteries
Size:	5.2 x 3.9 x 3.1 in. (132 x 100 x 77 mm)	4.0 x 2.3 x 1.6 in. (102 x 58 x 41 mm)
Waterproof:	No	No
Waterproof Depth:	n/a	n/a

Image Sensor
Sensor Type:	CMOS	CMOS
Sensor Manufacturer:		Sony Exmor R
Effective Megapixels:	24.4	20.2
Sensor Format:	APS-C	1 inch
Sensor size:	366.6mm² (23.50mm x 15.60mm)	116.16mm² (13.20mm x 8.80mm)
Approximate Pixel Pitch:	3.91 microns	2.41 microns
Focal Length Multiplier:	1.5x	2.7x
Aspect Ratio:	3:2	3:2
Color Filter Type:	RGBG	RGBG
Anti Aliasing Filter:	Optional	Fixed
Self-Cleaning:	Yes	No
Sensor shift image stabilization:	Yes	No
On-Sensor Phase Detect:	No	No
DxO Sensor Score:	80	67
DxO Color Depth Score (bits):	23.7	22.4
DxO Dynamic Range Score (evs):	13.4	12.3
DxO Maximum Effective ISO Score (iso):	1,216	495
Image Capture
Image Resolution:	6016 x 4000 (24.1 MP, 3:2), 4608 x 3072 (14.2 MP, 3:2), 3072 x 2048 (6.3 MP, 3:2), 1920 x 1280 (2.5 MP, 3:2)	5472 x 3648 (20.0 MP, 3:2), 4864 x 3648 (17.7 MP, 4:3), 5472 x 3080 (16.9 MP, 16:9), 3648 x 3648 (13.3 MP, 1:1), 3888 x 2592 (10.1 MP, 3:2), 3648 x 2736 (10.0 MP, 4:3), 3648 x 2056 (7.5 MP, Other), 2736 x 1824 (5.0 MP, 3:2), 2592 x 1944 (5.0 MP, 4:3), 2720 x 1528 (4.2 MP, 16:9), 12416 x 1856 (23.0 MP, Other), 8192 x 1856 (15.2 MP, Other), 2160 x 5536 (12.0 MP, Other), 2160 x 3872 (8.4 MP, Other)
Image File Format:	JPEG (EXIF 2.30), 14-bit RAW (.PEF, .DNG), RAW+JPEG	JPEG, RAW (ARW 2.3), RAW+JPEG
Continuous-mode frames/second:	7.1	10.0
Video Capture
Can take movies:	Yes	Yes
Movie Resolution:	1920x1080 (60i/50i/30p/25p/24p) 1280x720 (60p/50p/30p/25p/24p)	1920x1080 (60p/60i/30p/24p) 1440x1080 (30p) 1280x720 (120p) 640x480 (30p)
Movie File Format:	MPEG-4 AVC/H.264 (MOV), Motion JPEG (AVI) for interval movie record	XAVC S / AVCHD 2.0 / MPEG-4 AVC (H.264) with LPCM (2ch) / Dolby Digital (AC3) / MPEG-4 AAC-LC audio
Composite Video Out:	No	No
NTSC/PAL Switchable Video:	n/a	n/a
Video Usable as Viewfinder:	n/a	n/a
HD Video Out:	Yes	Yes
HD Video Connection:	HDMI	HDMI

Lens & Optics
Lens Mount:	Pentax K (KA/KAF/KAF2/3)	n/a
Lens:	smc Pentax 18-135mm f/3.5-5.6 ED AL [IF] DC DA WR	Zeiss Vario-Sonnar T* Lens; 10 elements in 9 groups (9 aspheric elements including AA lens)
Focal Length (35mm equivalent):	27 - 203mm	24 - 70mm
Focal Length (actual):	18 - 135mm	8.8 - 25.7mm
Zoom Ratio:	7.50x	2.92x
Aperture Range:	f/3.5 - f/22 (wide) / f/5.6 - f/40 (tele)	f/1.8 (wide) / f/2.8 (tele) - f/11 with 7 blade aperture, plus built-in 3-stop ND filter
Integrated ND Filter:	No	Yes
Normal Focus Range:	40 cm to Infinity 15.7 in to Infinity	5 cm to Infinity 2.0 in to Infinity
Macro Focus Range:
Filter Thread:	62.0mm	n/a
Thread Type:	n/a	n/a
Optical Image Stabilization:	No	Yes
Digital Zoom:		Yes
Digital Zoom Values:		Up to 4x; 2x Clear Image Digital Zoom
Auto Focus
Auto Focus:	Yes	Yes
Auto Focus Type:	SAFOX 11 TTL phase-matching - 27 point (25 cross type focus points in the center)	Contrast Detection: Multi point AF (25 points) / Center weighted AF / Flexible spot / Flexible spot (tracking focus) / Flexible sport (face tracking)
Auto Focus Assist Light?	Yes	Yes
Manual Focus:	Yes	Yes
Viewfinder
Viewfinder:	Optical / LCD	EVF / LCD
Viewfinder Type:	SLR type; eye-level pentaprism, ~100% coverage, 0.95x mag., TBDmm eyepoint, -2.5 to +1.5 diopter	Pop-up EVF: 0.39-inch OLED, 1,440,000 dots, 100% coverage, 0.59x magnification, 20mm eye-point (from eyepiece)/ 19.2mm from eyepiece frame; -4 to +3 m^-1 diopter, ZEISS T* Coating, eye detector.
Focus Peaking:	Yes	Yes
EVF Resolution:	n/a	1,440,000 dots (480,000 pixels)
Viewfinder Magnification (35mm equivalent):	0.63x	0.59x
Viewfinder Magnification (nominal/claimed):	0.95x	0.22x
Display
Eye-level Viewfinder:	Yes	Yes
Rear Display:	Yes	Yes
Rear Display Size (inches):	3.2	3.0
Rear Display Resolution:	1,036,800 dots (345,600 px)	1,228,800 dots (307,200 px)
Touchscreen:	No	No
Articulating Screen:	No	Yes
Tilt Swivel Screen:	No	No
Selfie Screen:	No	Yes
Max Playback Zoom:	16.0x	13.6x
Top Deck Display:	Yes	No

Exposure
Maximum ISO (native):	51200	12800
Minimum ISO (native):	100	125
ISO Settings:	Auto, 100-51200 (1, 1/2 or 1/3 EV steps)	Auto, ISO 125 - 12800 with ISO 80 and 100 low extensions, up to 25600 with Multi Frame NR
Auto ISO Mode:	Yes	Yes
White Balance Settings:	Auto, Multi Auto WB, Daylight, Shade, Cloudy, Fluorescent Light (D: Daylight Color, N:Daylight White, W:Cool White, L:Warm White), Tungsten Light, Flash, CTE, Manual (up to 3 settings), Color Temperature (up to 3 settings)	Auto, Daylight, Shade, Cloudy, Incandescent, Fluorescent (Warm, Cool, Day, Daylight), Flash, Color Temp/Filter, Custom
Shutter Speed Range:	1/8000 - 30 sec	1/2000 - 30 sec
Bulb Mode:	Yes	Yes
Exposure Compensation:	+/- 5.0EV in 0.3EV steps	+/- 3.0EV in 0.3EV steps
Metering Modes:	TTL open-aperture: Multi-segment with 86K-pixel RGB sensor, Center-weighted, Spot	Multi-segment, Center-weighted, Spot
Program Auto Exposure:	Yes	Yes
Aperture Priority:	Yes	Yes
Shutter Priority:	Yes	Yes
Full Manual Exposure:	Yes	Yes
Creative Exposure Modes:	Sensitivity Priority, Shutter and Aperture Priority; Digital filters (capture): Extract Color, Toy Camera, Retro, High Contrast, Shading, Invert Color, Unicolor Bold, Bold Monochrome; HDR: Auto, HDR1, HDR2, HDR3.	Anti Motion Blur, Fireworks, Gourmet, Handheld Twilight, High Sensitivity, Landscape, Macro, Night Portrait, Night Scene, Pet Mode, Portrait, Sports Action, Sunset; DRO (Auto/Level), HDR (Auto/Level), Auto Portrait Framing, Sweep Panorama; Picture Effect(s): Toy Camera, Pop Color, Posterization, Retro Photo, Soft High- key, Partial Color, High Contrast Monochrome, Soft Focus, HDR Painting, Rich-tone Monochrome, Miniature, Watercolor, Illustration
Self Timer:	2 or 12 seconds	2, 10, Portrait1, Portrait2 seconds
Time Lapse (intervalometer):	Yes
High Resolution Composite:	No	No
Flash
Built-in Flash:	Yes	Yes
Flash Modes:	P-TTL, Red-eye reduction, Slow-speed sync, Rear Curtain Sync. High-Speed Sync and Wireless Sync also available with PENTAX dedicated external flash.	Auto, Fill-flash, Slow Sync, Rear Sync, Off
Flash Guide Number (ISO 100):	13.0 m / 42.7 ft.	n/a
Flash Range Description:	Depends on lens	ISO Auto: 1’ to 49’ 2” (0.30m to 15.0m) (W) / 1’ 9” to 18’ 8” (0.55m to 5.7m) (T)
Max Flash Sync:	1/180	1/2000
Flash Exposure Compensation:	-2 to +1 EV in 0.5EV steps	+/- 2.0 EV in 0.3EV steps
External Flash Connection:	Hot Shoe, PC Sync socket	n/a
Built-In Wireless Flash Control:	Full TTL exposure
Image Storage
Usable Memory Types:	SD / SDHC / SDXC	MS Duo / MS PRO Duo / SD / SDHC / SDXC
UHS Support:	UHS-I	UHS-I
Other Memory:
Dual Card Slots:	Yes	No
RAW Capture Support:	Yes	Yes
Uncompressed Format:	14-bit RAW (.PEF, .DNG), RAW+JPEG	RAW (ARW 2.3), RAW+JPEG
Movie File Format:	MPEG-4 AVC/H.264 (MOV), Motion JPEG (AVI) for interval movie record	XAVC S / AVCHD 2.0 / MPEG-4 AVC (H.264) with LPCM (2ch) / Dolby Digital (AC3) / MPEG-4 AAC-LC audio
Included Memory:	No memory included	No memory included
Included Memory Type:
Connectivity
Built-In Wi-Fi:	No	Yes
NFC:	No	Yes
Bluetooth:	No	No
Built-In GPS:	No	No
Microphone Jack:	Yes	No
Headphone Jack:	Yes	No
External Connections:	USB 3.0 Super Speed	USB 2.0 High Speed,WiFi
PictBridge Compliant:	No	No
DPOF Compliant:	Yes	Yes
Remote Control:	Yes	Yes
Remote Control Type:	Optional Wired or IR	Optional wired, via Wi-Fi
Connections (extended):	Micro (Type D) HMDI, USB 3.0 Micro B, DC input, wired remote jack, 3.5mm external stereo mic jack, 3.5mm stereo headphone jack	Micro HDMI (Type D) with 4K stills output, Multi-terminal Micro USB port supports optional wired remote

Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution):	0.79	<0.3
Cycle time for RAW shooting in single shot mode (seconds per frame):	0.64	<0.3
Buffer size for RAW shooting in single shot mode (frames):	Unlimited	20
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot):	0.69	<0.3
Camera penalizes early shutter press?	No	No
JPEG shooting speed in burst mode (fps, max resolution):	7.1	10.0
Buffer size for JPEG shooting in burst mode (frames, max resolution):	75	48
RAW shooting speed in burst mode (fps):	7.1	6.7
Buffer size for RAW shooting in burst mode (frames):	24	26
RAW+JPEG shooting speed in burst mode (fps):	7.1	6.7
Buffer Size for RAW+JPEG shooting in burst mode (frames):	25	23
Shutter lag (full AF, wide/mid):	0.14 seconds	0.15 seconds
Shutter lag (full AF, tele):		0.15 seconds
Shutter lag (full AF, live view - DSLR):	1.01 seconds
Shutter lag (prefocused, live view - DSLR):	0.226 seconds
Shutter Lag (manual focus):	0.097 seconds	0.051 seconds
Shutter lag (full AF, with flash):	0.33 seconds	0.32 seconds
Shutter Lag (prefocused):	0.096 seconds	0.011 seconds
Shutter Lag (notes):	Full AF lag, Wide-area mode, OVF = 0.157s Live View: Center mode AF lag = 1.014s Wide-area mode AF lag = 1.005s Prefocused = 0.226s
Startup Time:	0.9 seconds	2.0 seconds
Play -> Record Time:	0.6 seconds	0.8 seconds
Flash cycle time, full power:	2.3 seconds	3.6 seconds
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):		320 shots
Battery Life, Still (CIPA Rating OVF/EVF):	560 shots	230 shots
Battery Life, Video:
Battery Form Factor:	Proprietary D-LI90	Proprietary NP-BX1
Usable Battery Types:	Lithium-ion rechargeable	Lithium-ion rechargeable
Batteries Included:	1 x Proprietary D-LI90 Lithium-ion rechargeable	1 x Proprietary NP-BX1 Lithium-ion rechargeable
Battery Charger Included (dedicated charger or AC/USB adapter):	Yes	Yes
Dedicated Battery Charger Included:	Yes	No
Internal Charging Supported:	No	Yes
Software
Included Software:	Software CD-ROM S-SW140
OS Compatibility:
Miscellaneous
Notes & Features:	Image stabilization system also acts as a selectable AA filter, 8.3 fps full-res burst mode, new 27-point AF system, new 86,000 pixel RGB metering system, Full HD video up to 60i with H.264 encoding, dual SD card slots, freeze-proof, dust-proof, weather-resistant magnesium alloy construction, USB 3.0 port.	Wide-angle 24-70mm eq. f/1.8-2.8 Zeiss lens with world's first two joined glass mold aspherics; 5-axis Optical Steadyshot; Built-in ND filter; BIONZ X processor; Pop-up SVGA OLED EVF; 180-degree tilting LCD, also 45 degrees downward; 1080p60 Full pixel readout of sensor with no line skipping; 720p120 capture; HDMI clean output; PlayMemories Camera Apps; Built-in Wi-Fi with NFC.