Sony Alpha 7S III vs Pentax K-7

General	Sony Alpha 7S III	Pentax K-7
Brand	Sony	Pentax
Model	Alpha 7S III	K-7
Predecessor Model	Sony Alpha 7S II
Successor Model		Pentax K-5
MSRP	$3499 (body only)
Camera Type	Interchangeable Lens	Interchangeable Lens
Body Type	Mirrorless	DSLR
Video Capture

Sensor	Sony Alpha 7S III	Pentax K-7
Sensor Type	BSI-CMOS	CMOS
Sensor Size	Full Frame	APS-C
Sensor Dimensions	35.6 x 23.8 mm	23.4 x 15.6 mm
Total Pixels	12.9 Megapixel	15 Megapixel
Effective Pixels	12.1 Megapixel	15 Megapixel
Low Pass Filter
Native ISO Range	80 - 102,400	100 - 2,000
Boosted ISO Range	50 - 409,600	100 - 6,400

Photo	Sony Alpha 7S III	Pentax K-7
Processor	BIONZ XR	PRIME II
Max Image Resolution	4240 x 2832	4672 x 3104
Other Resolutions		3936 x 2592, 3072 x 2048, 1728 x 1152
Image Aspect Ratios	1:1, 4:3, 3:2, 16:9	3:2
Image File Format	HEIF, JPEG, RAW
JPEG Quality Levels	Extra fine, fine, normal	Premium, Good, Better, Best
Bit Depth	14-Bit	12-Bit
Color Space	BT.2020 compatible with TRILUMINOS Color
Timelapse Recording	With downloadable app
White Balance	2500 to 9900K Presets: Auto, Cloudy, Custom, Daylight, Flash, Fluorescent, Incandescent, Shade, Underwater	Auto, Daylight, Shade, Cloudy, Fluorescent (4 Settings), Tungsten, Flash, CTE, Manual

Focus	Sony Alpha 7S III	Pentax K-7
Focusing System	Fast Hybrid AF (Phase-detection / Contrast-detection)
Autofocus Modes	Multi-area Center Selective single-point Tracking Single Continuous Touch Face Detection Live View	Multi-area Selective single-point Single Continuous Face Detection Live View Live View
Lens Servo	Continuous-Servo AF, Direct Manual Focus, Manual Focus, Single-Servo AF
AF Detection Range	-6 to +20 EV
Number of Focus Points	759	11
Touch-to-Focus
Live View Autofocus
Animal Eye Detection
Vehicle Tracking Mode
Insect Tracking Mode
Contrast Detection for Autofocus
Phase Detection for Autofocus

Optics	Sony Alpha 7S III	Pentax K-7
Lens Mount	Sony E	Pentax KAF2
Crop Factor	1x	1.5x
Image Stabilization	5-Axis Sensor Shift	Sensor Shift
Image Stabilization Compensation	5.5 stops
Digital Image Stabilization
Gyroscopic Stabilization

Screen	Sony Alpha 7S III	Pentax K-7
Screen Type	Fully Articulated	Fixed
Screen Technology	TFT LCD	TFT color LCD with AR coating
Touch Screen
Selfie & Vlogger Friendly LCD Screen
Screen Size	3.0"	3.0"
Screen Resolution	1,229k dot	921k dot
Top LCD Screen
Live View
Live Composition

Viewfinder	Sony Alpha 7S III	Pentax K-7
Viewfinder	Electronic (OLED)	Optical (pentaprism)
Viewfinder Size	0.64"
Viewfinder Coverage	100%	100%
Viewfinder Magnification	0.91x	0.92x
Viewfinder Magnification (35mm equivalent)	0.91x	0.61x
Viewfinder Resolution	9,437k dot
Viewfinder Eyepoint	25 mm
Diopter Adjustment	-4 to +3

Shutter	Sony Alpha 7S III	Pentax K-7
Shutter Type	Electronic, Mechanical Focal Plane
Min Shutter Speed	30 sec	30 sec
Max Shutter Speed (Mechanical or 1st Curtain)	1/8000 sec	1/8000 sec
Max Continuous Shooting	10.0 fps	5.2 fps
Continuous Shooting Resolution/fps/buffer	Up to 10 fps at 12.1 MP for up to 1000 Frames (Raw) / 1000 Frames (JPEG) Up to 8 fps at 12.1 MP Up to 6 fps at 12.1 MP Up to 3 fps at 12.1 MP

Flash	Sony Alpha 7S III	Pentax K-7
Built-in Flash
Flash Modes		Auto On Off Red-eye Slow Sync Rear Curtain Wireless
Flash Range		13.00 m
Max Flash Sync Speed	1/250 sec	1/180 sec
Flash Compensation	-3 to +3 EV (1/3, 1/2 EV Steps)
External Flash Connectivity
External Flash System	TTL	Pentax P-TTL series
External Flash Connection	Intelligent Hot Shoe	Hot Shoe, PC Terminal

Exposure	Sony Alpha 7S III	Pentax K-7
Exposure Metering Modes	Multi Center-weighted Highlight-weighted Average Spot	Multi Center-weighted Spot
Exposure Modes	Aperture Priority, Manual, Program, Shutter Priority	Auto, Program, Manual, Shutter-priority, Aperture-priority
Metering Range	-3 to +20 EV
Exposure Compensation	±5 EV (1/3 EV, 1/2 EV increments)	±5 EV (1/3 EV, 1/2 EV increments)
Exposure Bracketing	±5 EV (3, 5 shots at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV increments)	±2 EV (3, 5 shots at 1/7 EV, 1/5 EV, 1/3 EV, 1/2 EV, 2/3 EV, 1 EV increments)
Exposure Lock	Locked when shutter button is pressed halfway. Available with AE lock button. (On/Off/Auto)

DXO	Sony Alpha 7S III	Pentax K-7
DxO Low Light ISO	3900	536
DxO Color Depth	24.2	22.6
DxO Dynamic Range	13.4	10.6
DxO Overall Score	85	61

Video	Sony Alpha 7S III	Pentax K-7
Internal Recording Modes	H.265/XAVC HS 4:2:2 10-Bit 4K UHD: 3840 x 2160 @ 23.98/50/59.94/100 fps [50 to 280 Mbps] H.265/XAVC HS 4:2:0 10-Bit 4K UHD: 3840 x 2160 @ 23.98/50/59.94/100 fps [30 to 200 Mbps] H.264/XAVC S-I 4:2:2 10-Bit 4K UHD: 3840 x 2160 @ 23.98/25/29.97/50/59.94 fps [240 to 600 Mbps] Full HD: 1920 x 1080p @ 23.98/25/29.97/50/59.94 fps [89 to 222 Mbps] H.264/XAVC S 4:2:2 10-Bit 4K UHD: 3840 x 2160 @ 23.98/25/29.97/50/59.94/100 fps [100 to 280 Mbps] Full HD: 1920 x 1080p @ 23.98/25/29.97/50/59.94 fps [50 Mbps] H.264/XAVC S 4:2:0 8-Bit 4K UHD: 3840 x 2160 @ 23.98/25/29.97/50/59.94/100 fps [60 to 200 Mbps] Full HD: 1920 x 1080p @ 23.98/25/29.97/50/59.94/100/200/240 fps [16 to 100 Mbps]	Video with Audio, HD & NTSC Output
Interval Recording
Video Formats	MPEG-4, XAVC S, XAVC HS, XAVC S-1, H.264, H.265	Motion JPEG
Max Video Resolution	3840 x 2160	1280 x 720
10-bit 4:2:2 Color
External Recording Modes	Raw 16-Bit via HDMI 4264 x 2408 up to 59.94 fps 4:2:2 10-Bit via HDMI UHD 4K (3840 x 2160) @ 23.98/25/29.97/50/59.94 fps 1920 x 1080p @ 23.98/50/59.94 fps 1920 x 1080i @ 50/59.94 fps 4:2:0 8-Bit via HDMI UHD 4K (3840 x 2160) @ 23.98/25/29.97/50/59.94 fps 1920 x 1080p @ 23.98/50/59.94 fps 1920 x 1080i @ 50/59.94 fps
No crop on 4K Videos
Webcam Functionality
Gamma Curve	Sony S-Log 2, Sony S-Log 3
Unlimited Video Recording
Recording Limit	13 hours	25 min

Terminals	Sony Alpha 7S III	Pentax K-7
Audio I/O	1 x 1/8" / 3.5 mm TRS Stereo Microphone Input 1 x 1/8" / 3.5 mm TRS Stereo Headphone Output
Power I/O	1 x USB-C Input
Other I/O	1 x USB-C (USB 3.2 / 3.1 Gen 1) Data Input/Output (Shared with Power Input) 1 x Sony Multi/Micro-USB Control
USB Speed	USB 3.2 Gen 1x1 (5 GBit/sec)	USB 2.0 (480 Mbit/sec)
HDMI Output	Full Size
Speaker	Mono
Built-in Microphone	Stereo	Stereo
Microphone Input
Headphone Output
Flash Sync Port

Connectivity	Sony Alpha 7S III	Pentax K-7
Built-in GPS
Built-In Wi-Fi
Wi-Fi Version	Wi-Fi 5, 802.11ac/b/g/n, 2.4/5 GHz
Built-In Bluetooth
Bluetooth Version	5
NFC
Mobile App Compatible	*As of September, 2020: Check with manufacturer for the most up-to-date compatibility
Remote Control	wireless or smartphone	Optional, wired or wireless

Environmental	Sony Alpha 7S III	Pentax K-7
Environmental Sealing
Operating Temperature	32 to 104°F / 0 to 40°C	14-104°F/-10-40°C
Storage Temperature		Operating Temperature:

Physical	Sony Alpha 7S III	Pentax K-7
Dimensions	129 x 97 x 81 mm (5.08 x 3.82 x 3.19")	131 x 97 x 73 mm (5.16 x 3.82 x 2.87")
Weight (inc. batteries)	699 g (1.54 lb / 24.66 oz)	750 g (1.65 lb / 26.46 oz)
Box Dimensions (LxWxH)	10 x 6.1 x 5.6"
Package Weight	3.12 lb

Power and Storage	Sony Alpha 7S III	Pentax K-7
Battery Pack	NP-FZ100	D-LI90
Battery Life	600 shots	980 shots
USB Charging
Internal Storage
External Storage	Dual Slot: CFexpress Type A / SD (UHS-II)	Single Slot: SD/SDHC

Other	Sony Alpha 7S III	Pentax K-7
Self Timer	2 or 10 sec; continuous 3 or 5 exposures	2 or 10 sec
Orientation Sensor
Tripod Mounting Thread	1 x 1/4"-20 Female
Accessory Mount	1 x Intelligent Hot Shoe
Electronic Level Gauge

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