Comparison of Pentax K-7 and Sigma SD15

Comparison of Pentax K-7 and Sigma SD15 [S]ave

Attribute	Pentax K-7 ×	Sigma SD15 ×
General
Model	Pentax K-7	Sigma SD15
Brand	Pentax	Sigma
Manufacturer url	https://us.ricoh-imaging.com/	https://www.sigmaphoto.com/
Model number	K-7	SD15
Camera format	Pro SLR	SLR
Release year (year)	2009	2010
Tripod mount	+	+
Length (mm)	130	144
Width (mm)	74	81
Height (mm)	97	107
Weight (g)	758	680
Waterproof	-	-
Predecessor	Pentax K20D	-
Successor	Pentax K-5	-
Image Sensor
Sensor type	CMOS	CMOS
Sensor manufacturer	-	Foveon X3
Effective megapixels (MP)	14.6	4.7
Sensor format	APS-C	0.98 inch
Sensor area (mm²)	369.72	285.66
Sensor width (mm)	23.7	20.7
Sensor height (mm)	15.6	13.8
Approximate pixel pitch (micron)	5.07	7.84
Focal Length Multiplier (x)	1.5	1.7
Aspect ratio	3:2	3:2
Color filter type	RGBG	Full Color
Anti aliasing filter	Fixed	Not needed
Self-cleaning	+	-
Sensor shift image stabilization	+	-
On-sensor phase detect	-	-
Dxo sensor score	61	-
Dxo color depth score (bit)	22.6	-
Dxo dynamic range score (evs)	10.6	-
Dxo maximum effective iso score (iso)	536	-
Image Capture
Image resolution	1728 x 1152(2.0 mp 3:2) 3072 x 2048(6.3 mp 3:2) 3936 x 2624(10.3 mp 3:2) 4672 x 3104(14.5 mp other)	1312 x 880(1.2 mp other) 1872 x 1248(2.3 mp 3:2) 2640 x 1485(3.9 mp 16:9) 2640 x 1760(4.6 mp 3:2)
Image file format	.dng) jpeg (exif 2.21) raw (.pef	12-bit raw (.x3f) jpeg (exif 2.21)
Continuous-mode (fps)	5.2	3
Video Capture
Can take movies	+	-
Movie resolution	1280x720 1536x1024 640x416	-
Image Storage
Movie file format	AVI (Motion JPEG)	-
Composite video out	+	+
Ntsc/pal switchable video	+	+
Video usable as viewfinder	-	-
Hd video out	+	-
Hd video connection	HDMI	-
Lens and Optics
Lens mount	Pentax K (KA/KAF/KAF2)	Sigma SA bayonet
Integrated nd filter	-	-
Thread type	-	Varies with lens
Optical image stabilization	-	-
Digital zoom	-	-
Auto Focus
Auto focus	+	+
Auto focus type	11-point TTL phase-matching (SAFOX VIII)	5-point phase-difference detection
Auto focus assist light	+	+
Manual focus	+	+
Viewfinder
Viewfinder	Optical / LCD	Optical / LCD(playback only)
Viewfinder type	SLR type; eye-level pentaprism, 100% coverage, 0.92x mag., -2.5 to 1.5 diopter	SLR type; eye-level pentaprism, 98% coverage, 0.9x mag.
Focus peaking	-	-
Viewfinder magnification (35mm equivalent) (x)	0.61	0.53
Viewfinder magnification (nominal/claimed) (x)	0.92	0.9
Display
Eye-level viewfinder	+	+
Rear display	+	+
Rear display size (inch)	3	3
Rear display resolution (dots)	921,000	460,000
Touchscreen	-	-
Articulating screen	-	-
Tilt swivel screen	-	-
Selfie screen	-	-
Max playback zoom (x)	32	-
Top deck display	+	+
Exposure
Maximum iso (native)	3,200	1,600
Minimum iso (native)	100	100
Iso settings	Auto, 100, 200, 400, 800, 1600, 3200, 6400 (expanded)	Auto (100-200), Auto with Flash (100-400), 50, 100, 200, 400, 800,1600, 3200 (*Extended mode)
Auto iso mode	+	+
White balance settings	auto cloudy color temperature d daylight flash fluorescent (w n) shade tungsten	auto custom flash fluorescent incandescent overcast shade sunlight
Shutter speed range (s)	1/8000 - 30	1/4000 - 30
Bulb mode	+	+
Exposure compensation	+/- 5.0EV in 0.3EV steps	+/- 3.0EV in 0.3EV steps
Explosure metering modes	TTL open-aperture: 77-segment, Center-weighted, Spot	77-segment Evaluative, Center Weighted Average, Center Area, Spot
Program auto exposure	+	+
Aperture priority	+	+
Shutter priority	+	+
Full manual exposure	+	+
Creative exposure modes	Sensitivity Priority, Shutter and Aperture Priority, USER, Movie	-
Self timer (s)	2 12	2 10
Time lapse (intervalometer)	+	-
High resolution composite	-	-
Flash
Built-in flash	+	+
Flash modes	on redeye slow sync slow sync + redeye trailing curtain sync wireless	forced on red-eye reduction s-ttl slow sync slow sync/red-eye reduction
Flash guide number (iso 100) (m)	13	11
Flash range description	Depends on lens	-
Max flash sync (s)	1/180	1/180
Flash exposure compensation	-2 to +1 EV in 0.5EV steps	+/- 3.0 EV in 0.3EV steps
External flash connection	Hot Shoe, PC-Sync Socket	Hot Shoe
Built-in wireless flash control	-	-
Usable memory types	sd sdh	microdrive sd sdh
Dual card slots	-	-
Raw capture support	+	+
Uncompressed format	.dng) raw (.pef	12-bit raw (.x3f)
Connectivity
Built-in wi-fi	-	-
NFC	-	-
Bluetooth	-	-
Built-in gps	-	-
Microphone jack	-	-
Headphone jack	-	-
External connections	usb 2.0 high speed	firewire usb 2.0 full (low) speed
Pictbridge compliant	-	-
Dpof compliant	+	-
Remote control	+	+
Remote control type	wired or ir	cr-21 wired rs-31 wireless
Connections (extended)	dc input external stereo mic jack wired remote	dc input
Performance Timing
Max cycle time for jpeg shooting (s/frame)	0.3	-
Max cycle time for raw shooting (s/frame)	0.3	-
Buffer size for raw shooting in single shot mode (frames)	13	-
Camera penalizes early shutter press	-	-
Jpeg shooting speed in burst mode (max resolution) (fps)	5.2	3
Buffer size for jpeg shooting in burst mode (max resolution) (frames)	20	21
Shutter lag (full af, wide/mid) (s)	0.09	-
Shutter lag (manual focus) (s)	0.07	-
Shutter lag (full af, with flash) (s)	0.15	-
Shutter lag (prefocused) (s)	0.07	-
Shutter lag (notes)	Live ViewPhase-Detect Full AF: 1.2 secondsContrast-Detect Full AF: 2.3 secondsPrefocused: 0.405 second	-
Startup time (s)	0.6	-
Play -> record time (s)	0.1	-
Flash cycle time, full power (s)	3.7	-
Power
Battery life, still (cipa rating ovf/evf) (shots)	740	250
Battery form factor	Proprietary D-LI90	Proprietary BP-21
Usable battery types	lithium-ion rechargeable	lithium-ion rechargeable
Batteries included	1 x Proprietary D-LI90 Lithium-ion rechargeable	1 x Proprietary BP-21 Lithium-ion rechargeable
Battery charger included (dedicated charger or ac/usb adapter)	+	+
Software
Included software	cd-rom s-sw74/75	sigma photo pro 4.0
Os compatibility	macos 10.2 or later windows xp/vista	mac os windows
Miscellaneous
Notes and features	Sensor-shift image stabilization, new 77-segment metering system, Distortion and Lateral Chromatic Aberrations correction	14MP Foveon X3 Sensor, True II Processor.