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Pentax 645D vs Pentax WG-2 GPS

Portability
50
Imaging
76
Features
52
Overall
66
Pentax 645D front
 
Pentax Optio WG-2 GPS front
Portability
91
Imaging
39
Features
37
Overall
38

Pentax 645D vs Pentax WG-2 GPS Key Specs

Pentax 645D
(Full Review)
  • 40MP - Medium format Sensor
  • 3" Fixed Display
  • ISO 200 - 1600
  • No Anti-Alias Filter
  • No Video
  • Pentax 645AF2 Mount
  • 1480g - 156 x 117 x 119mm
  • Launched March 2010
  • Updated by Pentax 645Z
Pentax WG-2 GPS
(Full Review)
  • 16MP - 1/2.3" Sensor
  • 3" Fixed Screen
  • ISO 125 - 6400
  • 1920 x 1080 video
  • 28-140mm (F3.5-5.5) lens
  • 198g - 122 x 61 x 30mm
  • Released February 2012
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Pentax 645D vs Pentax WG-2 GPS Overview

Let's look much closer at the Pentax 645D and Pentax WG-2 GPS, one is a Pro DSLR and the latter is a Waterproof and both are manufactured by Pentax. There is a significant difference among the resolutions of the 645D (40MP) and WG-2 GPS (16MP) and the 645D (Medium format) and WG-2 GPS (1/2.3") provide different sensor measurements.

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The 645D was introduced 23 months before the WG-2 GPS which makes them a generation away from each other. Both cameras have different body design with the Pentax 645D being a Large SLR camera and the Pentax WG-2 GPS being a Compact camera.

Before diving straight to a comprehensive comparison, here is a concise introduction of how the 645D scores against the WG-2 GPS with regard to portability, imaging, features and an overall score.

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Reasons to pick Pentax 645D over the Pentax WG-2 GPS

 645D WG-2 GPS 
Screen resolution921k460kSharper screen (+461k dot)

Reasons to pick Pentax WG-2 GPS over the Pentax 645D

 WG-2 GPS 645D 
ReleasedFebruary 2012March 2010More modern by 23 months

Common features in the Pentax 645D and Pentax WG-2 GPS

 645D WG-2 GPS 
Manual focus More precise focus
Screen typeFixed Fixed Fixed screen
Screen dimensions3"3"Equal screen measurements
Selfie screen Neither offers selfie screen
Touch screen Lacking Touch screen

Pentax 645D vs Pentax WG-2 GPS Physical Comparison

When you are planning to carry around your camera frequently, you'll need to take into account its weight and proportions. The Pentax 645D offers physical dimensions of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") and a weight of 1480 grams (3.26 lbs) while the Pentax WG-2 GPS has measurements of 122mm x 61mm x 30mm (4.8" x 2.4" x 1.2") and a weight of 198 grams (0.44 lbs).

Compare the Pentax 645D and Pentax WG-2 GPS 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 vary depending on the lens you are employing at that moment. Below is a front view measurement comparison of the 645D vs the WG-2 GPS.

Pentax 645D vs Pentax WG-2 GPS size comparison

Looking at size and weight, the portability rating of the 645D and WG-2 GPS is 50 and 91 respectively.

Pentax 645D vs Pentax WG-2 GPS top view buttons comparison

Pentax 645D vs Pentax WG-2 GPS Sensor Comparison

Usually, it is hard to picture the gap in sensor sizes only by checking out technical specs. The picture below will offer you a better sense of the sensor dimensions in the 645D and WG-2 GPS.

As you can tell, both cameras have different resolutions and different sensor sizes. The 645D having a bigger sensor is going to make getting shallower DOF less difficult and the Pentax 645D will show more detail using its extra 24 Megapixels. Higher resolution will let you crop pictures a bit more aggressively. The more aged 645D will be disadvantaged when it comes to sensor innovation.

Pentax 645D vs Pentax WG-2 GPS sensor size comparison

Pentax 645D vs Pentax WG-2 GPS Screen and ViewFinder

Pentax 645D vs Pentax WG-2 GPS Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax 645D Portrait photography information
Pentax WG-2 GPS Portrait photography information
77
focusing manually
high MP (40 megapixels)
large sensor size (Medium format)
supports RAW files
doesn't have liveview
40
focusing manually
MP count good (16MP)
features face detection autofocus
manual exposure not available
external flash not possible
tiny sensor (1/2.3")
no RAW format
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Street Comparison

Street photography with Pentax 645D
Street photography with Pentax WG-2 GPS
58
large sensor size (Medium format)
supports RAW files
environment proof
no articulating screen
does not have image stabilization
54
weather proof
fixed screen
lack of image stabilization
tiny sensor (1/2.3")
no RAW format
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Sports Comparison

Pentax 645D Sports photography features
Pentax WG-2 GPS Sports photography features
63
high MP (40 megapixels)
large sensor size (Medium format)
environment proof
sensor has phase detect autofocus
doesn't have liveview
very slow continuous shooting (1.0 frames per second)
does not have image stabilization
bad battery pack (800 shots)
38
MP count good (16 megapixels)
features tracking autofocus
weather proof
slow frames per second (1.0 frames/s)
no shutter priority mode
lack of image stabilization
tiny sensor (1/2.3")
no phase detect autofocus
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Travel Comparison

Travel photography with Pentax 645D
Travel photography with Pentax WG-2 GPS
55
environment proof
high MP (40MP)
bad battery pack (800 CIPA)
screen isn't selfie friendly
70
weather proof
MP count good (16MP)
flash built-in
relatively wide (28mm)
doesn't offer selfie friendly display
slow max aperture (f3.5)
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Landscape Comparison

Pentax 645D as a Landscape photography camera
Pentax WG-2 GPS as a Landscape photography camera
72
focusing manually
swap lenses (Pentax 645AF2 mount)
screen size is good (3")
high MP (40 megapixels)
large sensor size (Medium format)
does not have anti aliasing filter
supports RAW files
environment proof
two card slots
doesn't have liveview
does not have image stabilization
bad battery pack (800 shots)
47
focusing manually
relatively wide (28mm)
screen size is good (3 inches)
MP count good (16 megapixels)
weather proof
fixed lens (fixed lens mount)
slow max aperture (f3.5)
manual exposure not available
lack of image stabilization
tiny sensor (1/2.3")
no RAW format
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Vlogging Comparison

Pentax 645D Vlogging advice
Pentax WG-2 GPS Vlogging advice
9
no video recording
30
relatively wide (28mm)
features face detection autofocus
video res high (1920 x 1080 pixels)
slow max aperture (f3.5)
doesn't offer selfie friendly display
lack of image stabilization
doesn't have external microphone socket
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Pentax 645D vs Pentax WG-2 GPS Specifications

Detailed spec comparison table for Pentax 645D and Pentax WG-2 GPS
 Pentax 645DPentax Optio WG-2 GPS
General Information
Brand Pentax Pentax
Model Pentax 645D Pentax Optio WG-2 GPS
Type Pro DSLR Waterproof
Launched 2010-03-10 2012-02-07
Physical type Large SLR Compact
Sensor Information
Chip Prime II -
Sensor type CCD BSI-CMOS
Sensor size Medium format 1/2.3"
Sensor measurements 44 x 33mm 6.17 x 4.55mm
Sensor area 1,452.0mm² 28.1mm²
Sensor resolution 40 megapixels 16 megapixels
Anti aliasing filter
Aspect ratio 4:3 1:1, 4:3 and 16:9
Full resolution 7264 x 5440 4288 x 3216
Max native ISO 1600 6400
Lowest native ISO 200 125
RAW support
Lowest boosted ISO 100 -
Autofocusing
Manual focus
Touch focus
Continuous autofocus
Single autofocus
Tracking autofocus
Autofocus selectice
Autofocus center weighted
Autofocus multi area
Live view autofocus
Face detect focus
Contract detect focus
Phase detect focus
Number of focus points 11 9
Lens
Lens mounting type Pentax 645AF2 fixed lens
Lens focal range - 28-140mm (5.0x)
Max aperture - f/3.5-5.5
Macro focus distance - 1cm
Amount of lenses 6 -
Crop factor 0.8 5.8
Screen
Display type Fixed Type Fixed Type
Display size 3 inch 3 inch
Display resolution 921 thousand dots 460 thousand dots
Selfie friendly
Liveview
Touch friendly
Display tech TFT Color LCD with wide-viewing angle and with AR coating Widescreen TFT color LCD with anti-reflective coating
Viewfinder Information
Viewfinder Optical (pentaprism) None
Viewfinder coverage 98% -
Viewfinder magnification 0.85x -
Features
Slowest shutter speed 30 seconds 4 seconds
Maximum shutter speed 1/4000 seconds 1/4000 seconds
Continuous shooting rate 1.0fps 1.0fps
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes -
Change white balance
Image stabilization
Inbuilt flash
Flash range no built-in flash 5.40 m
Flash modes Auto, On, Off, Red-eye, Slow Sync, Rear Curtain Auto, On, Off, Red-eye, Soft
External flash
AEB
White balance bracketing
Maximum flash synchronize 1/125 seconds -
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Video resolutions - 1920 x 1080 (30 fps), 1280 x 720 (60, 30 fps), 640 x 480 (30fps), 320 x 240 (30, 15 fps)
Max video resolution None 1920x1080
Video data format - MPEG-4, H.264
Microphone port
Headphone port
Connectivity
Wireless None Eye-Fi Connected
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None BuiltIn
Physical
Environment sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 1480 grams (3.26 pounds) 198 grams (0.44 pounds)
Physical dimensions 156 x 117 x 119mm (6.1" x 4.6" x 4.7") 122 x 61 x 30mm (4.8" x 2.4" x 1.2")
DXO scores
DXO All around score 82 not tested
DXO Color Depth score 24.6 not tested
DXO Dynamic range score 12.6 not tested
DXO Low light score 1262 not tested
Other
Battery life 800 photographs 260 photographs
Type of battery Battery Pack Battery Pack
Battery model D-LI90 D-LI92
Self timer Yes (2 or 10 sec) Yes (2 or 10 sec)
Time lapse shooting
Type of storage SD/SDHC SD/SDHC/SDXC card, Internal
Card slots Two 1
Retail price $4,000 $300