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Pentax K-5 vs Sony G3

Portability
60
Imaging
56
Features
82
Overall
66
Pentax K-5 front
 
Sony Cyber-shot DSC-G3 front
Portability
94
Imaging
33
Features
30
Overall
31

Pentax K-5 vs Sony G3 Key Specs

Pentax K-5
(Full Review)
  • 16MP - APS-C Sensor
  • 3" Fixed Screen
  • ISO 80 - 12800 (Boost to 51200)
  • Sensor based Image Stabilization
  • 1/8000s Max Shutter
  • 1920 x 1080 video
  • Pentax KAF2 Mount
  • 740g - 131 x 97 x 73mm
  • Introduced December 2010
  • Succeeded the Pentax K-7
  • Replacement is Pentax K-5 IIs
Sony G3
(Full Review)
  • 10MP - 1/2.3" Sensor
  • 3.5" Fixed Display
  • ISO 80 - 3200
  • Optical Image Stabilization
  • 640 x 480 video
  • 35-140mm (F3.5-10.0) lens
  • 185g - 97 x 59 x 22mm
  • Launched January 2009
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Pentax K-5 vs Sony G3 Overview

Lets look much closer at the Pentax K-5 vs Sony G3, one is a Advanced DSLR and the other is a Small Sensor Compact by competitors Pentax and Sony. There is a big difference among the resolutions of the K-5 (16MP) and G3 (10MP) and the K-5 (APS-C) and G3 (1/2.3") provide totally different sensor dimensions.

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The K-5 was launched 24 months after the G3 making them a generation away from each other. Both cameras feature different body design with the Pentax K-5 being a Mid-size SLR camera and the Sony G3 being a Compact camera.

Before diving right into a detailed comparison, here is a quick summary of how the K-5 grades against the G3 in terms of portability, imaging, features and an overall mark.

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Reasons to pick Pentax K-5 over the Sony G3

 K-5 G3 
LaunchedDecember 2010January 2009Newer by 24 months

Reasons to pick Sony G3 over the Pentax K-5

 G3 K-5 
Display size3.5"3"Larger display (+0.5")
Touch display Easily navigate

Common features in the Pentax K-5 and Sony G3

 K-5 G3 
Manual focus More precise focusing
Display typeFixed Fixed Fixed display
Display resolution921k921kThe same display resolution
Selfie screen Lack of selfie screen

Pentax K-5 vs Sony G3 Physical Comparison

For anyone who is going to travel with your camera often, you'll need to factor its weight and dimensions. The Pentax K-5 has got external measurements of 131mm x 97mm x 73mm (5.2" x 3.8" x 2.9") accompanied by a weight of 740 grams (1.63 lbs) and the Sony G3 has dimensions of 97mm x 59mm x 22mm (3.8" x 2.3" x 0.9") accompanied by a weight of 185 grams (0.41 lbs).

Look at the Pentax K-5 vs Sony G3 in the new Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember, the weight of an Interchangeable Lens Camera will differ based on the lens you are utilising during that time. The following is a front view physical size comparison of the K-5 and the G3.

Pentax K-5 vs Sony G3 size comparison

Taking into account size and weight, the portability rating of the K-5 and G3 is 60 and 94 respectively.

Pentax K-5 vs Sony G3 top view buttons comparison

Pentax K-5 vs Sony G3 Sensor Comparison

Generally, it can be tough to visualise the contrast in sensor dimensions only by researching specifications. The pic underneath might offer you a far better sense of the sensor sizing in the K-5 and G3.

To sum up, the 2 cameras feature different megapixels and different sensor dimensions. The K-5 because of its larger sensor will make getting shallower depth of field less difficult and the Pentax K-5 will render greater detail utilizing its extra 6MP. Greater resolution will enable you to crop pics way more aggressively. The fresher K-5 will have an edge in sensor technology.

Pentax K-5 vs Sony G3 sensor size comparison

Pentax K-5 vs Sony G3 Screen and ViewFinder

Pentax K-5 vs Sony G3 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax K-5 as a Portrait photography camera
Sony G3 as a Portrait photography camera
73
focusing manually
MP count good (16MP)
decent sensor size (APS-C)
comes with face detection focus
delivers RAW files
26
manual focus
no manual mode
cannot use external flash
MP count low (10MP)
sensor is very small (1/2.3")
lack of RAW files
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Street Comparison

Pentax K-5 Street photography factors
Sony G3 Street photography factors
66
image stabilization (Sensor based)
decent sensor size (APS-C)
delivers RAW files
environment proofing
screen is fixed
56
image stabilization (Optical)
screen is fixed
sensor is very small (1/2.3")
lack of RAW files
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Sports Comparison

Sports photography with Pentax K-5
Sports photography with Sony G3
78
great max shutter speed (1/8,000s)
image stabilization (Sensor based)
MP count good (16MP)
decent sensor size (APS-C)
comes with tracking autofocus
environment proofing
sensor has phase detect auto focus
23
image stabilization (Optical)
max shutter speed is low (1/1,000 seconds)
max frames per second low (2.0 frames per second)
no shutter priority
MP count low (10 megapixels)
sensor is very small (1/2.3")
lack of phase detect AF
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Travel Comparison

Pentax K-5 Travel photography details
Sony G3 Travel photography details
65
environment proofing
MP count good (16 megapixels)
built-in flash
display isn't selfie friendly
50
flash built-in
no Timelapse recording
MP count low (10MP)
screen is not selfie friendly
wide angle not the best (35mm)
somewhat slow max aperture (f3.5)
Photography Glossary

Landscape Comparison

Pentax K-5 as a Landscape photography camera
Sony G3 as a Landscape photography camera
78
focusing manually
switch lenses (Pentax KAF2 mount)
pretty good screen size (3 inches)
image stabilization (Sensor based)
MP count good (16 megapixels)
decent sensor size (APS-C)
delivers RAW files
environment proofing
36
manual focus
big screen (3.5 inch)
image stabilization (Optical)
can't change lenses (fixed lens mount)
wide angle not the best (35mm)
somewhat slow max aperture (f3.5)
no manual mode
MP count low (10 megapixels)
sensor is very small (1/2.3")
lack of RAW files
no Timelapse recording
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Vlogging Comparison

Pentax K-5 Vlogging information
Sony G3 Vlogging information
33
image stabilization (Sensor based)
comes with face detection focus
video res high (1920 x 1080 pxls)
includes external microphone jack
display isn't selfie friendly
27
touchscreen
image stabilization (Optical)
wide angle not the best (35mm)
somewhat slow max aperture (f3.5)
screen is not selfie friendly
low res video (640 x 480 pixels)
no external microphone socket
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Pentax K-5 vs Sony G3 Specifications

Detailed spec comparison table for Pentax K-5 and Sony G3
 Pentax K-5Sony Cyber-shot DSC-G3
General Information
Brand Name Pentax Sony
Model type Pentax K-5 Sony Cyber-shot DSC-G3
Type Advanced DSLR Small Sensor Compact
Introduced 2010-12-18 2009-01-08
Physical type Mid-size SLR Compact
Sensor Information
Chip Prime II -
Sensor type CMOS CCD
Sensor size APS-C 1/2.3"
Sensor measurements 23.7 x 15.7mm 6.17 x 4.55mm
Sensor surface area 372.1mm² 28.1mm²
Sensor resolution 16MP 10MP
Anti alias filter
Aspect ratio 3:2 4:3, 3:2 and 16:9
Full resolution 4928 x 3264 3648 x 2736
Max native ISO 12800 3200
Max boosted ISO 51200 -
Minimum native ISO 80 80
RAW photos
Autofocusing
Manual focusing
Touch focus
Continuous AF
AF single
Tracking AF
AF selectice
Center weighted AF
AF multi area
Live view AF
Face detection focusing
Contract detection focusing
Phase detection focusing
Total focus points 11 9
Cross type focus points 9 -
Lens
Lens support Pentax KAF2 fixed lens
Lens zoom range - 35-140mm (4.0x)
Maximum aperture - f/3.5-10.0
Amount of lenses 151 -
Crop factor 1.5 5.8
Screen
Type of screen Fixed Type Fixed Type
Screen sizing 3 inches 3.5 inches
Screen resolution 921 thousand dots 921 thousand dots
Selfie friendly
Liveview
Touch screen
Screen tech TFT LCD monitor -
Viewfinder Information
Viewfinder Optical (pentaprism) None
Viewfinder coverage 100% -
Viewfinder magnification 0.61x -
Features
Lowest shutter speed 30s 1s
Highest shutter speed 1/8000s 1/1000s
Continuous shooting rate 7.0fps 2.0fps
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes -
Custom WB
Image stabilization
Built-in flash
Flash distance 13.00 m (at ISO 100) 4.30 m (Auto ISO)
Flash settings Auto, On, Off, Red-eye, Slow sync, High speed, Rear curtain and Wireless Auto, On, Off, Red-Eye reduction, Slow Sync
Hot shoe
Auto exposure bracketing
White balance bracketing
Highest flash synchronize 1/180s -
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Supported video resolutions 1920 x 1080 (25 fps), 1280 x 720 (25, 30 fps), 640 x 424 (25, 30 fps) 640 x 480 (30, 15 fps), 320 x 240 (30, 15 fps)
Max video resolution 1920x1080 640x480
Video format Motion JPEG Motion JPEG
Microphone port
Headphone port
Connectivity
Wireless None None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS Optional None
Physical
Environment sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 740 gr (1.63 lb) 185 gr (0.41 lb)
Physical dimensions 131 x 97 x 73mm (5.2" x 3.8" x 2.9") 97 x 59 x 22mm (3.8" x 2.3" x 0.9")
DXO scores
DXO All around rating 82 not tested
DXO Color Depth rating 23.7 not tested
DXO Dynamic range rating 14.1 not tested
DXO Low light rating 1162 not tested
Other
Battery life 980 pictures -
Style of battery Battery Pack -
Battery ID D-LI90 -
Self timer Yes ( 2 or 12 seconds) Yes (2 or 10 sec)
Time lapse feature
Storage type SD/SDHC/SDXC Memory Stick Duo/Pro Duo, Internal
Card slots 1 1
Cost at launch $800 $200