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Pentax 645Z vs Sony RX100 VA

Portability
49 Imaging
80 Features
74 Overall
77
Pentax 645Z front
 
Sony Cyber-shot DSC-RX100 V(A) front
Portability
89 Imaging
54 Features
77 Overall
63

Pentax 645Z vs Sony RX100 VA Key Specs

Pentax 645Z
(Full Review)
  • 51MP - Medium format Sensor
  • 3.2" Tilting Display
  • ISO 100 - 204800
  • No Anti-Alias Filter
  • 1920 x 1080 video
  • Pentax 645AF2 Mount
  • 1550g - 156 x 117 x 123mm
  • Launched April 2014
  • Superseded the Pentax 645D
Sony RX100 VA
(Full Review)
  • 20MP - 1" Sensor
  • 3" Tilting Screen
  • ISO 125 - 12800 (Bump to 25600)
  • Optical Image Stabilization
  • 3840 x 2160 video
  • 24-70mm (F1.8-2.8) lens
  • 299g - 102 x 58 x 41mm
  • Introduced July 2018
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Pentax 645Z vs Sony RX100 VA Overview

Here, we will be evaluating the Pentax 645Z vs Sony RX100 VA, one is a Pro DSLR and the latter is a Large Sensor Compact by brands Pentax and Sony. There is a sizeable difference between the resolutions of the 645Z (51MP) and RX100 VA (20MP) and the 645Z (Medium format) and RX100 VA (1") offer different sensor sizes.

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The 645Z was launched 5 years before the RX100 VA which is quite a large gap as far as tech is concerned. The two cameras feature different body design with the Pentax 645Z being a Large SLR camera and the Sony RX100 VA being a Large Sensor Compact camera.

Before delving right into a detailed comparison, here is a short summary of how the 645Z matches up versus the RX100 VA in regards to portability, imaging, features and an overall score.

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Reasons to pick Pentax 645Z over the Sony RX100 VA

		

		

			
 645Z RX100 VA 
Screen size3.2"3"Bigger screen (+0.2")
		

	

	
	

		

		
Reasons to pick Sony RX100 VA over the Pentax 645Z

		

		

			
 RX100 VA 645Z 
IntroducedJuly 2018April 2014More modern by 51 months
Screen resolution1229k1037kClearer screen (+192k dot)
Selfie screen  Take selfies
		

	

	
	

		

		
Common features in the Pentax 645Z and Sony RX100 VA

		

		

			
 645Z RX100 VA 
Focus manually  Very exact focusing
Screen typeTiltingTiltingTilting screen
Touch friendly screen  No Touch friendly screen
		

	

	

	
	
	
	

	

		

		
Pentax 645Z vs Sony RX100 VA Physical Comparison

		

		

			
If you are going to carry around your camera, you'll have to factor in its weight and volume. The Pentax 645Z comes with outer measurements of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") having a weight of 1550 grams (3.42 lbs) while the Sony RX100 VA has sizing of 102mm x 58mm x 41mm (4.0" x 2.3" x 1.6") having a weight of 299 grams (0.66 lbs).
Compare the Pentax 645Z vs Sony RX100 VA in the latest Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses
Take into account, the weight of an Interchangeable Lens Camera will differ dependant on the lens you are utilising during that time. Below is a front view physical size comparison of the 645Z and the RX100 VA.
Pentax 645Z vs Sony RX100 VA size comparison
Taking into consideration size and weight, the portability rating of the 645Z and RX100 VA is 49 and 89 respectively.
Pentax 645Z vs Sony RX100 VA top view buttons comparison		

	

	
	

		

		
Pentax 645Z vs Sony RX100 VA Sensor Comparison

		

		

			
In many cases, it is difficult to imagine the contrast between sensor sizes merely by going over specs. The picture below might offer you a much better sense of the sensor sizing in the 645Z and RX100 VA.
All in all, the two cameras come with different megapixel count and different sensor sizes. The 645Z due to its bigger sensor is going to make shooting bokeh simpler and the Pentax 645Z will offer you more detail utilizing its extra 31 Megapixels. Higher resolution will help you crop photographs a good deal more aggressively. The more aged 645Z is going to be behind in sensor tech.
	
			Pentax 645Z vs Sony RX100 VA sensor size comparison			
		

	

	
	

		

		
Pentax 645Z vs Sony RX100 VA Screen and ViewFinder

		

		

					

		Pentax 645Z vs Sony RX100 VA Screen and Viewfinder comparison	

	
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Photography Type Scores

		

	

	
Portrait Comparison
Pentax 645Z Portrait photography features
Sony RX100 VA Portrait photography features
88
 focusing manually
 megapixel count high (51MP)
 sensor size is big (Medium format)
 provides face detection autofocus
 saves RAW formats
66
 has manual focus
 above average flash sync speed (1/2,000 seconds)
 megapixel count good (20 megapixels)
 decent sensor size (1")
 provides face detection autofocus
 saves RAW files
 external flash not possible
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Street Comparison
Street photography with Pentax 645Z
Street photography with Sony RX100 VA
63
 tilting screen
 sensor size is big (Medium format)
 saves RAW formats
 environment sealing
 great ISO range (204,800)
 does not have image stabilization
 heavier than competitors (1,550 grams)
86
 tilting screen
 image stabilization (Optical)
 decent sensor size (1")
 saves RAW files
 lighter than others in class (299g)
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Sports Comparison
Pentax 645Z Sports photography features
Sony RX100 VA Sports photography features
71
 megapixel count high (51 megapixels)
 sensor size is big (Medium format)
 provides tracking autofocus
 environment sealing
 comes with phase detect autofocus
 slow fps (3.0 frames per second)
 does not have image stabilization
 bad battery (650 CIPA)
70
 quiet shutter (1/32,000 seconds)
 max fps high (24.0 frames/s)
 image stabilization (Optical)
 megapixel count good (20 megapixels)
 decent sensor size (1")
 provides tracking autofocus
 has phase detect autofocus
 terrible battery (220 per charge)
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Travel Comparison
 Pentax 645Z as a Travel photography camera
 Sony RX100 VA as a Travel photography camera
51
 environment sealing
 megapixel count high (51MP)
 bad battery (650 CIPA)
 heavier than competitors (1,550 grams)
 doesn't posses selfie friendly display
76
 lighter than others in class (299 grams)
 megapixel count good (20 megapixels)
 has built in flash
 display is selfie friendly
 fairly wide (24mm)
 fast maximum aperture (f1.8)
 lack of Timelapse recording
 terrible battery (220 per charge)
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Landscape Comparison
Pentax 645Z Landscape photography information
Sony RX100 VA Landscape photography information
78
 focusing manually
 switch lenses (Pentax 645AF2 mount)
 screen is a good size (3.2")
 megapixel count high (51 megapixels)
 sensor size is big (Medium format)
 no low pass filter
 great ISO range (204,800)
 saves RAW formats
 environment sealing
 2 card slots
 does not have image stabilization
 bad battery (650 per charge)
66
 has manual focus
 fairly wide (24mm)
 fast maximum aperture (f1.8)
 good sized screen (3")
 image stabilization (Optical)
 megapixel count good (20 megapixels)
 decent sensor size (1")
 saves RAW files
 lens is fixed (fixed lens mount)
 terrible battery (220 shots)
 lack of Timelapse recording
Photography Glossary
Vlogging Comparison
 Pentax 645Z as a Vlogging camera
 Sony RX100 VA as a Vlogging camera
27
 provides face detection autofocus
 high quality video (1920 x 1080 pxls)
 does have external mic support
 doesn't posses selfie friendly display
 does not have image stabilization
 heavier than competitors (1,550g)
81
 fairly wide (24mm)
 fast maximum aperture (f1.8)
 display is selfie friendly
 image stabilization (Optical)
 provides face detection autofocus
 high res video (3840 x 2160 pixels)
 lighter than others in class (299 grams)
 lack of external microphone socket
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Pentax 645Z vs Sony RX100 VA Specifications

		

		

					

		
		

			Detailed spec comparison table for Pentax 645Z and Sony RX100 VA
 Pentax 645ZSony Cyber-shot DSC-RX100 V(A)
General Information
Brand Pentax Sony
Model Pentax 645Z Sony Cyber-shot DSC-RX100 V(A)
Type Pro DSLR Large Sensor Compact
Launched 2014-04-15 2018-07-13
Physical type Large SLR Large Sensor Compact
Sensor Information
Chip PRIME III Bionz X
Sensor type CMOS BSI-CMOS
Sensor size Medium format 1"
Sensor measurements 44 x 33mm 13.2 x 8.8mm
Sensor surface area 1,452.0mm² 116.2mm²
Sensor resolution 51 megapixels 20 megapixels
Anti aliasing filter    
Aspect ratio 4:3 1:1, 4:3, 3:2 and  16:9
Full resolution 8256 x 6192 5472 x 3648
Max native ISO 204800 12800
Max boosted ISO - 25600
Minimum native ISO 100 125
RAW pictures    
Minimum boosted ISO - 80
Autofocusing
Focus manually    
Touch to focus    
Continuous AF    
AF single    
AF tracking    
AF selectice    
Center weighted AF    
AF multi area    
Live view AF    
Face detect focusing    
Contract detect focusing    
Phase detect focusing    
Number of focus points 27 315
Lens
Lens mounting type Pentax 645AF2 fixed lens
Lens focal range - 24-70mm (2.9x)
Largest aperture - f/1.8-2.8
Macro focus distance - 5cm
Amount of lenses 6 -
Focal length multiplier 0.8 2.7
Screen
Type of display Tilting Tilting
Display sizing 3.2" 3"
Display resolution 1,037k dots 1,229k dots
Selfie friendly    
Liveview    
Touch functionality    
Viewfinder Information
Viewfinder type Optical (pentaprism) Electronic
Viewfinder resolution - 2,359k dots
Viewfinder coverage 98 percent 100 percent
Viewfinder magnification 0.85x 0.59x
Features
Slowest shutter speed 30s 30s
Maximum shutter speed 1/4000s 1/2000s
Maximum quiet shutter speed - 1/32000s
Continuous shooting rate 3.0fps 24.0fps
Shutter priority    
Aperture priority    
Expose Manually    
Exposure compensation Yes Yes
Change WB    
Image stabilization    
Built-in flash    
Flash range no built-in flash 10.20 m (at Auto ISO)
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, Flash On, Slow Synchro, Rear Sync, Flash Off
External flash    
AEB    
White balance bracketing    
Maximum flash synchronize 1/125s 1/2000s
Exposure
Multisegment    
Average    
Spot    
Partial    
AF area    
Center weighted    
Video features
Supported video resolutions 1920 x 1080 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p, 30p, 25p,24p) 3840 x 2160 @ 30p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM
Max video resolution 1920x1080 3840x2160
Video data format MPEG-4, H.264 MPEG-4, AVCHD, XAVC S
Microphone port    
Headphone port    
Connectivity
Wireless None Built-In
Bluetooth    
NFC    
HDMI    
USB USB 3.0 (5 GBit/sec) NP-BX1 lithium-ion battery & USB charger
GPS Optional None
Physical
Environmental sealing    
Water proof    
Dust proof    
Shock proof    
Crush proof    
Freeze proof    
Weight 1550g (3.42 pounds) 299g (0.66 pounds)
Physical dimensions 156 x 117 x 123mm (6.1" x 4.6" x 4.8") 102 x 58 x 41mm (4.0" x 2.3" x 1.6")
DXO scores
DXO All around score 101 not tested
DXO Color Depth score 26.0 not tested
DXO Dynamic range score 14.7 not tested
DXO Low light score 4505 not tested
Other
Battery life 650 photographs 220 photographs
Form of battery Battery Pack Battery Pack
Battery model D-LI90 NP-BX1
Self timer Yes (2 or 10 secs) Yes
Time lapse shooting    
Storage type Dual SD/SDHC/SDXC slots SD/ SDHC/SDXC, Memory Stick Pro Duo/ Pro-HG Duo
Card slots Two 1
Retail cost $5,024 $998