Pentax 645Z vs Pentax K-3

General	Pentax 645Z	Pentax K-3
Brand	Pentax	Pentax
Model	645Z	K-3
Predecessor Model	Pentax 645D
Successor Model		Pentax K-3 Mark II
MSRP	$8499.95 / £6799.99 (body only), £7699.99 (with 55mm lens)	$1299 / £1099 body only, $1699 / £1449 with 18-135 WR lens, $1599 / £1399 for limited edition silver body
Camera Type	Interchangeable Lens	Interchangeable Lens
Body Type	DSLR	DSLR
Video Capture

Sensor	Pentax 645Z	Pentax K-3
Sensor Type	CMOS	CMOS
Sensor Size	Medium format	APS-C
Sensor Dimensions	44 x 33 mm	23.5 x 15.6 mm
Total Pixels	52.99 Megapixel	24.71 Megapixel
Effective Pixels	51.4 Megapixel	23.35 Megapixel
Low Pass Filter
Native ISO Range	100 - 204,800	100 - 51,200

Photo	Pentax 645Z	Pentax K-3
Processor	PRIME III	PRIME III
Max Image Resolution	8256 x 6192	6016 x 4000
Other Resolutions	6912 x 5184, 5376 x4032, 1920 x 1080	4608 x 3072, 3072 x 2048, 1920 x 1080
Image Aspect Ratios	4:3	3:2
Image File Format	DNG, JPEG, RAW
JPEG Quality Levels	Superfine, fine, normal	Best, better, good
Bit Depth	14-Bit	14-Bit
Timelapse Recording
White Balance	Presets: Auto, CTE, Cloudy, Color Temperature, Daylight, Flash, Fluorescent (Cool White), Fluorescent (Day White), Fluorescent (Daylight), Fluorescent (Warm White), Manual, Multi Auto WB, Shade, Tungsten

Focus	Pentax 645Z	Pentax K-3
Autofocus Modes	Multi-area Selective single-point Tracking Single Continuous Face Detection Live View	Multi-area Center Selective single-point Tracking Single Continuous Face Detection Live View
Lens Servo	Continuous-Servo AF, Manual Focus, Single-Servo AF	Continuous-Servo AF, , Manual Focus, Single-Servo AF
AF Detection Range	-3 to +18 EV
Number of Focus Points	27	27
Number of Cross-type Focus Points		25
Touch-to-Focus
Live View Autofocus
Animal Eye Detection
Vehicle Tracking Mode
Insect Tracking Mode
Contrast Detection for Autofocus
Phase Detection for Autofocus

Optics	Pentax 645Z	Pentax K-3
Lens Mount	Pentax 645AF2	Pentax KAF2
Crop Factor	0.79x	1.5x
Image Stabilization		Sensor Shift
Digital Image Stabilization

Screen	Pentax 645Z	Pentax K-3
Screen Type	Tilting	Fixed
Screen Technology	TFT LCD	TFT LCD
Touch Screen
Screen Size	3.2"	3.2"
Screen Resolution	1,037k dot	1,037k dot
Top LCD Screen
Live View
Live Composition

Viewfinder	Pentax 645Z	Pentax K-3
Viewfinder	Optical (pentaprism)	Optical (pentaprism)
Viewfinder Coverage	98%	100%
Viewfinder Magnification	0.56x	0.95x
Viewfinder Magnification (35mm equivalent)	0.71x	0.63x
Diopter Adjustment	-3.5 to +2	-2.5 to +1.5

Shutter	Pentax 645Z	Pentax K-3
Shutter Type	Mechanical Focal Plane
Min Shutter Speed	30 sec	30 sec
Max Shutter Speed (Mechanical or 1st Curtain)	1/4000 sec	1/8000 sec
Max Continuous Shooting	3.0 fps	8.3 fps
Continuous Shooting Resolution/fps/buffer	Up to 3 fps for up to 30 Frames (JPEG) / 12 Frames (TIFF) / 10 Frames (Raw)

Flash	Pentax 645Z	Pentax K-3
Built-in Flash
Flash Modes	Flash On Flash On+Red-eye Reduction Slow-speed Sync Slow-speed Sync+Red-eye P-TTL Trailing Curtain Sync contrast-control-sync high-speed sync wireless sync	Auto on off red-eye slow sync slow sync + red-eye trailing curtain sync high speed wireless manual
Flash Range		13.00 m at ISO 100
Max Flash Sync Speed	1/125 sec	1/180 sec
Flash Compensation	-2 to +1 EV (1/2 EV Steps)
External Flash Connectivity
External Flash System	P-TTL
External Flash Connection	Hot Shoe, X-Sync Terminal	Hot Shoe, PC Terminal, Wireless

Exposure	Pentax 645Z	Pentax K-3
Exposure Metering Modes	Multi Center-weighted Spot	Multi Center-weighted Spot
Exposure Modes	Aperture Priority, Manual, Program, Sensitivity Priority, Shutter Priority
Metering Range	-1 to +21 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 (2, 3, 5 shots at 1/3 EV, 1/2 EV, 1 EV, 2 EV increments)	±2 EV (2, 3, 5 shots at 1/3 EV, 1/2 EV increments)

DXO	Pentax 645Z	Pentax K-3
DxO Low Light ISO	4505	1216
DxO Color Depth	26.0	23.7
DxO Dynamic Range	14.7	13.4
DxO Overall Score	101	80

Video	Pentax 645Z	Pentax K-3
Internal Recording Modes	AVI/MOV/H.264/MPEG-4 Full HD: 1920 x 1080p @ 23.98/25/29.97 fps Full HD: 1920 x 1080i @ 50 fps HD: 1280 x 720 @ 24/25/29.97/50 fps
Interval Recording
Video Formats	MPEG-4, H.264	MPEG-4, H.264
Max Video Resolution	1920 x 1080	1920 x 1080
External Recording Modes	HDMI 1920 x 1080p 1280 x 720 1280 x 576 720 x 480
Unlimited Video Recording
Recording Limit	25 min	25 min

Terminals	Pentax 645Z	Pentax K-3
Audio I/O	1 x 1/8" / 3.5 mm TRS Stereo Microphone Input
Other I/O	1 x Micro-USB (USB 3.2 / 3.1 Gen 1) Input/Output (Shared with Power Input) 1 x 2.5 mm Sub-Mini Control Input 1 x PC Sync Socket Output
USB Speed	USB 3.2 Gen 1x1 (5 GBit/sec)	USB 3.2 Gen 1x1 (5 GBit/sec)
HDMI Output	Micro Type D	Mini
Speaker	Stereo	Mono
Built-in Microphone	Mono	Mono
Microphone Input
Headphone Output
Flash Sync Port

Connectivity	Pentax 645Z	Pentax K-3
Built-in GPS
Built-In Wi-Fi		Optional
Built-In Bluetooth
Remote Control		optional, wired or wireless

Environmental	Pentax 645Z	Pentax K-3
Environmental Sealing
Operating Temperature	14 to 104°F / -10 to 40°C	14 to 104°F / -10 to 40°C

Physical	Pentax 645Z	Pentax K-3
Dimensions	156 x 117 x 123 mm (6.14 x 4.61 x 4.84")	131 x 100 x 77 mm (5.16 x 3.94 x 3.03")
Weight (inc. batteries)	1550 g (3.42 lb / 54.67 oz)	800 g (1.76 lb / 28.22 oz)
Box Dimensions (LxWxH)	10 x 9.291 x 8.583"	8.3 x 6.4 x 3.7"
Package Weight	6.7 lb	3.1 lb

Power and Storage	Pentax 645Z	Pentax K-3
Battery Pack	D-LI90	D-LI90
Battery Life	650 shots	560 shots
Internal Storage
External Storage	Dual Slot: SD/SDHC/SDXC (UHS-I)	Dual Slot: SD/SDHC/SDXC (UHS-I)

Other	Pentax 645Z	Pentax K-3
Self Timer	2 or 10 secs	2 or 12 seconds
Orientation Sensor
Tripod Mounting Thread	1 x 1/4"-20 Female (Bottom) 1 x 1/4"-20 Female (Side)
Accessory Mount	1 x Hot Shoe Mount 1 x 1/4"-20 Female on Camera Body
Material of Construction	Magnesium Alloy, Aluminum
Electronic Level Gauge

For a full review please go to the review page: