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Pentax 645Z vs Sony RX100 II

Portability
49
Imaging
80
Features
74
Overall
77
Pentax 645Z front
 
Sony Cyber-shot DSC-RX100 II front
Portability
89
Imaging
51
Features
74
Overall
60

Pentax 645Z vs Sony RX100 II 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
  • Introduced April 2014
  • Replaced the Pentax 645D
Sony RX100 II
(Full Review)
  • 20MP - 1" Sensor
  • 3" Tilting Screen
  • ISO 160 - 12800 (Expand to 25600)
  • Optical Image Stabilization
  • 1920 x 1080 video
  • 28-100mm (F1.8-4.9) lens
  • 281g - 102 x 58 x 38mm
  • Revealed June 2013
  • Older Model is Sony RX100
  • New Model is Sony RX100 III
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Pentax 645Z vs Sony RX100 II Overview

Here is a thorough comparison of the Pentax 645Z vs Sony RX100 II, one being a Pro DSLR and the latter is a Large Sensor Compact by brands Pentax and Sony. There is a crucial difference between the resolutions of the 645Z (51MP) and RX100 II (20MP) and the 645Z (Medium format) and RX100 II (1") posses totally different sensor sizing.

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The 645Z was revealed 10 months later than the RX100 II so they are both of a similar generation. Each of these cameras have different body design with the Pentax 645Z being a Large SLR camera and the Sony RX100 II being a Large Sensor Compact camera.

Before we go into a thorough comparison, here is a quick synopsis of how the 645Z matches up versus the RX100 II with respect to portability, imaging, features and an overall rating.

Photography Glossary
	
	

Reasons to pick Pentax 645Z over the Sony RX100 II

 645Z RX100 II 
RevealedApril 2014June 2013Fresher by 10 months
Screen dimensions3.2"3"Bigger screen (+0.2")

Reasons to pick Sony RX100 II over the Pentax 645Z

 RX100 II 645Z 
Screen resolution1229k1037kSharper screen (+192k dot)

Common features in the Pentax 645Z and Sony RX100 II

 645Z RX100 II 
Manually focus Very accurate focus
Screen typeTiltingTiltingTilting screen
Selfie screen Neither contains selfie screen
Touch screen No Touch screen

Pentax 645Z vs Sony RX100 II Physical Comparison

In case you're looking to carry your camera frequently, you will want to think about its weight and dimensions. The Pentax 645Z has got outer dimensions 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 II has dimensions of 102mm x 58mm x 38mm (4.0" x 2.3" x 1.5") having a weight of 281 grams (0.62 lbs).

Check out the Pentax 645Z vs Sony RX100 II in the all new Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember that, the weight of an Interchangeable Lens Camera will vary dependant on the lens you are employing at that time. Following is a front view measurement comparison of the 645Z and the RX100 II.

Pentax 645Z vs Sony RX100 II size comparison

Considering size and weight, the portability rating of the 645Z and RX100 II is 49 and 89 respectively.

Pentax 645Z vs Sony RX100 II top view buttons comparison

Pentax 645Z vs Sony RX100 II Sensor Comparison

Generally, it's hard to see the difference between sensor sizing just by looking at specifications. The graphic here might give you a more clear sense of the sensor dimensions in the 645Z and RX100 II.

Plainly, each of these cameras provide different resolutions and different sensor sizing. The 645Z having a bigger sensor will make achieving shallow depth of field less difficult and the Pentax 645Z will give you extra detail because of its extra 31MP. Higher resolution will let you crop photographs more aggressively. The newer 645Z is going to have a benefit when it comes to sensor innovation.

Pentax 645Z vs Sony RX100 II sensor size comparison

Pentax 645Z vs Sony RX100 II Screen and ViewFinder

Pentax 645Z vs Sony RX100 II Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Portrait photography with Pentax 645Z
Portrait photography with Sony RX100 II
88
focusing manually
sensor resolution is high (51MP)
sensor size is big (Medium format)
comes with face detection focus
delivers RAW formats
70
focusing manually
flash sync is higher than normal (1/2,000s)
good megapixels (20MP)
good sensor size (1")
comes with face detection autofocus
delivers RAW files
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Street Comparison

Pentax 645Z Street photography advice
Sony RX100 II Street photography advice
63
has a tilting screen
sensor size is big (Medium format)
delivers RAW formats
weather proof
great high ISO (204,800)
lack of image stabilization
heavier than competitors (1,550g)
85
tilting screen
built in image stabilization (Optical)
good sensor size (1")
delivers RAW files
lighter than competition (281g)
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Sports Comparison

Pentax 645Z as a Sports photography camera
Sony RX100 II as a Sports photography camera
71
sensor resolution is high (51MP)
sensor size is big (Medium format)
comes with tracking autofocus
weather proof
comes with phase detect auto focus
max fps low (3.0 fps)
lack of image stabilization
bad battery life (650 CIPA)
67
built in image stabilization (Optical)
good megapixels (20MP)
good sensor size (1")
comes with tracking autofocus
better than average battery life (350 shots)
lack of phase detect autofocus
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Travel Comparison

Pentax 645Z Travel photography features
Sony RX100 II Travel photography features
51
weather proof
sensor resolution is high (51 megapixels)
bad battery life (650 shots)
heavier than competitors (1,550 grams)
screen is not selfie friendly
80
better than average battery life (350 CIPA)
lighter than competition (281g)
good megapixels (20MP)
built-in flash
fairly wide (28mm)
very good maximum aperture (f1.8)
does not feature selfie friendly display
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Landscape Comparison

Pentax 645Z Landscape photography info
Sony RX100 II Landscape photography info
78
focusing manually
swap lenses (Pentax 645AF2 mount)
pretty good screen size (3.2 inch)
sensor resolution is high (51 megapixels)
sensor size is big (Medium format)
doesnt have anti-alias filter
great high ISO (204,800)
delivers RAW formats
weather proof
2 card slots
lack of image stabilization
bad battery life (650 shots)
74
focusing manually
fairly wide (28mm)
very good maximum aperture (f1.8)
screen is a good size (3")
built in image stabilization (Optical)
good megapixels (20 megapixels)
good sensor size (1")
delivers RAW files
better than average battery life (350 per charge)
cannot switch lens (fixed lens mount)
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Vlogging Comparison

Vlogging with Pentax 645Z
Vlogging with Sony RX100 II
27
comes with face detection focus
high res video (1920 x 1080 resolution)
does have external mic support
screen is not selfie friendly
lack of image stabilization
heavier than competitors (1,550g)
37
fairly wide (28mm)
very good maximum aperture (f1.8)
built in image stabilization (Optical)
comes with face detection autofocus
high res video (1920 x 1080 pixels)
lighter than competition (281 grams)
does not feature selfie friendly display
does not have external mic port
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Pentax 645Z vs Sony RX100 II Specifications

Detailed spec comparison table for Pentax 645Z and Sony RX100 II
 Pentax 645ZSony Cyber-shot DSC-RX100 II
General Information
Make Pentax Sony
Model Pentax 645Z Sony Cyber-shot DSC-RX100 II
Type Pro DSLR Large Sensor Compact
Introduced 2014-04-15 2013-06-27
Body design Large SLR Large Sensor Compact
Sensor Information
Chip PRIME III -
Sensor type CMOS CMOS
Sensor size Medium format 1"
Sensor dimensions 44 x 33mm 13.2 x 8.8mm
Sensor surface area 1,452.0mm² 116.2mm²
Sensor resolution 51MP 20MP
Anti aliasing filter
Aspect ratio 4:3 1:1, 4:3, 3:2 and 16:9
Highest Possible resolution 8256 x 6192 5472 x 3648
Maximum native ISO 204800 12800
Maximum enhanced ISO - 25600
Minimum native ISO 100 160
RAW files
Minimum enhanced ISO - 100
Autofocusing
Focus manually
AF touch
Continuous AF
AF single
AF tracking
AF selectice
Center weighted AF
AF multi area
Live view AF
Face detect AF
Contract detect AF
Phase detect AF
Number of focus points 27 25
Lens
Lens mounting type Pentax 645AF2 fixed lens
Lens focal range - 28-100mm (3.6x)
Maximum aperture - f/1.8-4.9
Macro focus distance - 5cm
Amount of lenses 6 -
Focal length multiplier 0.8 2.7
Screen
Range of display Tilting Tilting
Display sizing 3.2" 3"
Display resolution 1,037k dot 1,229k dot
Selfie friendly
Liveview
Touch functionality
Display technology - Xtra Fine WhiteMagic TFT LCD
Viewfinder Information
Viewfinder Optical (pentaprism) Electronic (optional)
Viewfinder coverage 98 percent -
Viewfinder magnification 0.85x -
Features
Minimum shutter speed 30 secs 30 secs
Fastest shutter speed 1/4000 secs 1/2000 secs
Continuous shutter speed 3.0 frames per second 10.0 frames per second
Shutter priority
Aperture priority
Manual exposure
Exposure compensation Yes Yes
Set WB
Image stabilization
Inbuilt flash
Flash range no built-in flash 15.00 m (ISO Auto (W))
Flash settings 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, Slow Sync
External flash
AEB
White balance bracketing
Fastest flash sync 1/125 secs 1/2000 secs
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Video resolutions 1920 x 1080 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p, 30p, 25p,24p) 1920 x 1080 (60 fps), 640 x 480 (30 fps)
Maximum video resolution 1920x1080 1920x1080
Video format MPEG-4, H.264 MPEG-4, AVCHD
Mic jack
Headphone jack
Connectivity
Wireless None Built-In
Bluetooth
NFC
HDMI
USB USB 3.0 (5 GBit/sec) USB 2.0 (480 Mbit/sec)
GPS Optional None
Physical
Environmental seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 1550 gr (3.42 lb) 281 gr (0.62 lb)
Physical dimensions 156 x 117 x 123mm (6.1" x 4.6" x 4.8") 102 x 58 x 38mm (4.0" x 2.3" x 1.5")
DXO scores
DXO Overall score 101 67
DXO Color Depth score 26.0 22.5
DXO Dynamic range score 14.7 12.4
DXO Low light score 4505 483
Other
Battery life 650 photos 350 photos
Battery form Battery Pack Battery Pack
Battery model D-LI90 NP-BX1
Self timer Yes (2 or 10 secs) Yes (10 sec. / 2 sec. / Self-portrait One-person/ Self-portrait Two-person/ Self timer Continuous (3 or 5 shots))
Time lapse recording With downloadable app
Type of storage Dual SD/SDHC/SDXC slots SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo
Storage slots Dual Single
Retail pricing $5,024 $598