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Pentax WG-3 GPS vs Sony A900

Portability
90
Imaging
40
Features
43
Overall
41
Pentax WG-3 GPS front
 
Sony Alpha DSLR-A900 front
Portability
54
Imaging
66
Features
62
Overall
64

Pentax WG-3 GPS vs Sony A900 Key Specs

Pentax WG-3 GPS
(Full Review)
  • 16MP - 1/2.3" Sensor
  • 3" Fixed Display
  • ISO 125 - 6400
  • Sensor-shift Image Stabilization
  • 1920 x 1080 video
  • 25-100mm (F2.0-4.9) lens
  • 238g - 125 x 64 x 33mm
  • Launched July 2013
Sony A900
(Full Review)
  • 25MP - Full frame Sensor
  • 3" Fixed Display
  • ISO 100 - 6400
  • Sensor based Image Stabilization
  • 1/8000s Maximum Shutter
  • No Video
  • Sony/Minolta Alpha Mount
  • 895g - 156 x 117 x 82mm
  • Announced October 2008
  • Successor is Sony A99
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Pentax WG-3 GPS vs Sony A900 Overview

Let's look more closely at the Pentax WG-3 GPS and Sony A900, former being a Waterproof while the other is a Advanced DSLR by companies Pentax and Sony. There is a substantial difference between the image resolutions of the WG-3 GPS (16MP) and A900 (25MP) and the WG-3 GPS (1/2.3") and A900 (Full frame) provide different sensor sizes.

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The WG-3 GPS was introduced 4 years later than the A900 and that is quite a big difference as far as tech is concerned. Each of the cameras have different body design with the Pentax WG-3 GPS being a Compact camera and the Sony A900 being a Mid-size SLR camera.

Before getting right into a step-by-step comparison, here is a simple highlight of how the WG-3 GPS matches up vs the A900 in relation to portability, imaging, features and an overall grade.

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Reasons to pick Pentax WG-3 GPS over the Sony A900

 WG-3 GPS A900 
AnnouncedJuly 2013October 2008More recent by 58 months

Reasons to pick Sony A900 over the Pentax WG-3 GPS

 A900 WG-3 GPS 
Display resolution922k460kCrisper display (+462k dot)

Common features in the Pentax WG-3 GPS and Sony A900

 WG-3 GPS A900 
Manual focus Very accurate focus
Display typeFixed Fixed Fixed display
Display dimensions3"3"Equal display dimensions
Selfie screen Absent selfie screen
Touch friendly display Absent Touch friendly display

Pentax WG-3 GPS vs Sony A900 Physical Comparison

For anybody who is aiming to lug around your camera regularly, you are going to need to consider its weight and proportions. The Pentax WG-3 GPS comes with outer dimensions of 125mm x 64mm x 33mm (4.9" x 2.5" x 1.3") and a weight of 238 grams (0.52 lbs) while the Sony A900 has measurements of 156mm x 117mm x 82mm (6.1" x 4.6" x 3.2") along with a weight of 895 grams (1.97 lbs).

Compare the Pentax WG-3 GPS and Sony A900 in our brand new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember, the weight of an ILC will differ dependant on the lens you use at that time. The following is a front view dimensions comparison of the WG-3 GPS vs the A900.

Pentax WG-3 GPS vs Sony A900 size comparison

Taking into consideration size and weight, the portability rating of the WG-3 GPS and A900 is 90 and 54 respectively.

Pentax WG-3 GPS vs Sony A900 top view buttons comparison

Pentax WG-3 GPS vs Sony A900 Sensor Comparison

In many cases, it's tough to imagine the gap between sensor measurements purely by reading specs. The photograph underneath should give you a much better sense of the sensor sizes in the WG-3 GPS and A900.

All in all, each of the cameras have different megapixel count and different sensor measurements. The WG-3 GPS using its tinier sensor is going to make getting shallow DOF tougher and the Sony A900 will offer greater detail using its extra 9MP. Greater resolution can also make it easier to crop pics a bit more aggressively. The more recent WG-3 GPS should have an edge when it comes to sensor innovation.

Pentax WG-3 GPS vs Sony A900 sensor size comparison

Pentax WG-3 GPS vs Sony A900 Screen and ViewFinder

Pentax WG-3 GPS vs Sony A900 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax WG-3 GPS Portrait photography details
Sony A900 Portrait photography details
41
you can focus manually
MP count good (16MP)
comes with face detect focusing
manual exposure not available
external flash not possible
tiny sensor size (1/2.3")
no RAW support
71
manual focus
excellent MP (25 megapixels)
great sensor size (Full frame)
exports RAW files
no liveview feature
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Street Comparison

Pentax WG-3 GPS Street photography factors
Sony A900 Street photography factors
59
image stabilization (Sensor-shift)
weather proofing
screen does not articulate
tiny sensor size (1/2.3")
no RAW support
heavier than competitors (238g)
66
has image stabilization (Sensor based)
great sensor size (Full frame)
exports RAW files
environment proofing
screen does not articulate
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Sports Comparison

Pentax WG-3 GPS Sports photography factors
Sony A900 Sports photography factors
45
image stabilization (Sensor-shift)
MP count good (16 megapixels)
comes with tracking focus
weather proofing
no shutter priority mode
tiny sensor size (1/2.3")
bad battery life (240 shots)
no phase detect AF
70
max shutter speed is good (1/8,000 seconds)
has image stabilization (Sensor based)
excellent MP (25 megapixels)
great sensor size (Full frame)
environment proofing
has phase detect autofocus
no liveview feature
max fps very slow (5.0 fps)
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Travel Comparison

Pentax WG-3 GPS Travel photography details
Sony A900 Travel photography details
69
weather proofing
MP count good (16 megapixels)
built-in flash
decently wide (25mm)
good maximum aperture (f2.0)
bad battery life (240 shots)
heavier than competitors (238g)
display is not selfie friendly
54
environment proofing
excellent MP (25MP)
missing Timelapse recording
display isn't selfie friendly
Photography Glossary

Landscape Comparison

Pentax WG-3 GPS Landscape photography advice
Sony A900 Landscape photography advice
54
you can focus manually
decently wide (25mm)
good maximum aperture (f2.0)
screen size is good (3 inches)
image stabilization (Sensor-shift)
MP count good (16 megapixels)
weather proofing
can't switch lens (fixed lens mount)
manual exposure not available
tiny sensor size (1/2.3")
no RAW support
bad battery life (240 shots)
72
manual focus
interchangeable lenses (Sony/Minolta Alpha mount)
screen size is good (3 inch)
has image stabilization (Sensor based)
excellent MP (25MP)
great sensor size (Full frame)
exports RAW files
environment proofing
has double storage slots
no liveview feature
missing Timelapse recording
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Vlogging Comparison

Pentax WG-3 GPS Vlogging highlights
Sony A900 Vlogging highlights
34
decently wide (25mm)
good maximum aperture (f2.0)
image stabilization (Sensor-shift)
comes with face detect focusing
video resolution high (1920 x 1080 pxls)
display is not selfie friendly
does not have mic jack
heavier than competitors (238g)
9
no video recording
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Pentax WG-3 GPS vs Sony A900 Specifications

Detailed spec comparison table for Pentax WG-3 GPS and Sony A900
 Pentax WG-3 GPSSony Alpha DSLR-A900
General Information
Brand Pentax Sony
Model Pentax WG-3 GPS Sony Alpha DSLR-A900
Class Waterproof Advanced DSLR
Launched 2013-07-19 2008-10-22
Body design Compact Mid-size SLR
Sensor Information
Powered by - Bionz
Sensor type BSI-CMOS CMOS
Sensor size 1/2.3" Full frame
Sensor measurements 6.17 x 4.55mm 35.9 x 24mm
Sensor area 28.1mm² 861.6mm²
Sensor resolution 16 megapixels 25 megapixels
Anti aliasing filter
Aspect ratio 1:1, 4:3 and 16:9 3:2 and 16:9
Highest resolution 4608 x 3456 6048 x 4032
Highest native ISO 6400 6400
Minimum native ISO 125 100
RAW photos
Autofocusing
Manual focus
Autofocus touch
Autofocus continuous
Autofocus single
Autofocus tracking
Autofocus selectice
Autofocus center weighted
Multi area autofocus
Live view autofocus
Face detect autofocus
Contract detect autofocus
Phase detect autofocus
Number of focus points 9 9
Lens
Lens mounting type fixed lens Sony/Minolta Alpha
Lens focal range 25-100mm (4.0x) -
Maximal aperture f/2.0-4.9 -
Macro focus range 1cm -
Number of lenses - 143
Focal length multiplier 5.8 1
Screen
Display type Fixed Type Fixed Type
Display sizing 3 inches 3 inches
Resolution of display 460k dot 922k dot
Selfie friendly
Liveview
Touch functionality
Display tech Widescreen TFT color LCD with anti-reflective coating TFT Xtra Fine color LCD
Viewfinder Information
Viewfinder None Optical (pentaprism)
Viewfinder coverage - 100 percent
Viewfinder magnification - 0.74x
Features
Lowest shutter speed 4 seconds 30 seconds
Highest shutter speed 1/4000 seconds 1/8000 seconds
Continuous shooting speed - 5.0fps
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation - Yes
Set white balance
Image stabilization
Built-in flash
Flash range 3.40 m no built-in flash
Flash modes Auto, On, Off, Red-eye, Soft Auto, On, Off, Red-Eye, Slow Sync, Rear Curtain, Fill-in, Wireless
External flash
AEB
White balance bracketing
Highest flash sync - 1/250 seconds
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Video resolutions 1920 x 1080 (30 fps), 1280 x 720 (60, 30 fps) -
Highest video resolution 1920x1080 None
Video file format MPEG-4, H.264 -
Microphone jack
Headphone jack
Connectivity
Wireless Eye-Fi Connected None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS BuiltIn None
Physical
Environmental seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 238g (0.52 pounds) 895g (1.97 pounds)
Physical dimensions 125 x 64 x 33mm (4.9" x 2.5" x 1.3") 156 x 117 x 82mm (6.1" x 4.6" x 3.2")
DXO scores
DXO All around score not tested 79
DXO Color Depth score not tested 23.7
DXO Dynamic range score not tested 12.3
DXO Low light score not tested 1431
Other
Battery life 240 pictures 880 pictures
Type of battery Battery Pack Battery Pack
Battery model D-LI92 NP-FM500H
Self timer Yes (2 or 10 sec) Yes (2 or 10 sec)
Time lapse feature
Type of storage SD/SDHC/SDXC card, Internal Compact Flash (Type I or II), Memory Stick Duo / Pro Duo, UDMA Mode 5, Supports FAT12 / FAT16 / FAT32
Storage slots Single 2
Retail cost $350 $2,736