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Pentax K-x vs Ricoh GR Digital III

Portability
69
Imaging
52
Features
47
Overall
50
Pentax K-x front
 
Ricoh GR Digital III front
Portability
92
Imaging
34
Features
35
Overall
34

Pentax K-x vs Ricoh GR Digital III Key Specs

Pentax K-x
(Full Review)
  • 12MP - APS-C Sensor
  • 2.7" Fixed Screen
  • ISO 100 - 6400 (Push to 12800)
  • Sensor based Image Stabilization
  • 1/6000s Maximum Shutter
  • 1280 x 720 video
  • Pentax KAF2 Mount
  • 580g - 123 x 92 x 68mm
  • Introduced December 2009
Ricoh GR Digital III
(Full Review)
  • 10MP - 1/1.7" Sensor
  • 3" Fixed Display
  • ISO 64 - 1600
  • 640 x 480 video
  • 28mm (F1.9) lens
  • 208g - 109 x 59 x 26mm
  • Revealed July 2009
  • Refreshed by Ricoh GR Digital IV
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Pentax K-x vs Ricoh GR Digital III Overview

Lets look a little more closely at the Pentax K-x and Ricoh GR Digital III, one being a Entry-Level DSLR and the other is a Small Sensor Compact by competitors Pentax and Ricoh. The image resolution of the K-x (12MP) and the GR Digital III (10MP) is fairly similar but the K-x (APS-C) and GR Digital III (1/1.7") have totally different sensor sizes.

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The K-x was announced 5 months later than the GR Digital III and they are both of a similar generation. Both of these cameras feature different body design with the Pentax K-x being a Compact SLR camera and the Ricoh GR Digital III being a Compact camera.

Before getting into a comprehensive comparison, here is a brief synopsis of how the K-x matches up vs the GR Digital III in the way of portability, imaging, features and an overall rating.

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Reasons to pick Pentax K-x over the Ricoh GR Digital III

 K-x GR Digital III 

Reasons to pick Ricoh GR Digital III over the Pentax K-x

 GR Digital III K-x 
Display size3"2.7"Larger display (+0.3")
Display resolution920k230kCrisper display (+690k dot)

Common features in the Pentax K-x and Ricoh GR Digital III

 K-x GR Digital III 
RevealedDecember 2009July 2009Similar generation
Manually focus More exact focus
Display typeFixed Fixed Fixed display
Selfie screen Lack of selfie screen
Touch friendly display Neither provides Touch friendly display

Pentax K-x vs Ricoh GR Digital III Physical Comparison

In case you're aiming to carry your camera regularly, you need to consider its weight and measurements. The Pentax K-x provides outside measurements of 123mm x 92mm x 68mm (4.8" x 3.6" x 2.7") having a weight of 580 grams (1.28 lbs) whilst the Ricoh GR Digital III has proportions of 109mm x 59mm x 26mm (4.3" x 2.3" x 1.0") accompanied by a weight of 208 grams (0.46 lbs).

Take a look at the Pentax K-x and Ricoh GR Digital III in the latest Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Don't forget, the weight of an Interchangeable Lens Camera will differ depending on the lens you are using at the time. Underneath is a front view overall size comparison of the K-x versus the GR Digital III.

Pentax K-x vs Ricoh GR Digital III size comparison

Taking into consideration dimensions and weight, the portability score of the K-x and GR Digital III is 69 and 92 respectively.

Pentax K-x vs Ricoh GR Digital III top view buttons comparison

Pentax K-x vs Ricoh GR Digital III Sensor Comparison

More often than not, its tough to see the contrast between sensor sizing only by going over specs. The graphic here will help offer you a far better sense of the sensor measurements in the K-x and GR Digital III.

As you can plainly see, each of these cameras feature different resolutions and different sensor sizing. The K-x having a larger sensor will make shooting bokeh easier and the Pentax K-x will offer extra detail with its extra 2 Megapixels. Greater resolution will also make it easier to crop pics way more aggressively.

Pentax K-x vs Ricoh GR Digital III sensor size comparison

Pentax K-x vs Ricoh GR Digital III Screen and ViewFinder

Pentax K-x vs Ricoh GR Digital III Screen and Viewfinder comparison
Photography Glossary

Photography Type Scores

Portrait Comparison

Portrait photography with Pentax K-x
Portrait photography with Ricoh GR Digital III
63
you can focus manually
sensor size is decent (APS-C)
offers face detection focus
exports RAW formats
megapixel count low (12MP)
40
has manual focus
supports RAW files
low MP (10MP)
very small sensor size (1/1.7")
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Street Comparison

Pentax K-x Street photography info
Ricoh GR Digital III Street photography info
67
image stabilization (Sensor based)
sensor size is decent (APS-C)
exports RAW formats
no moving screen
55
supports RAW files
screen is fixed
no image stabilization
very small sensor size (1/1.7")
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Sports Comparison

Pentax K-x Sports photography information
Ricoh GR Digital III Sports photography information
61
maximum shutter speed is high (1/6,000s)
image stabilization (Sensor based)
sensor size is decent (APS-C)
good battery power (1,900 per charge)
comes with phase detect auto focus
continuous shooting slow (5.0 frames/s)
megapixel count low (12 megapixels)
17
focal length is fixed (28mm)
no image stabilization
low MP (10 megapixels)
very small sensor size (1/1.7")
has no phase detect autofocus
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Travel Comparison

Travel photography with Pentax K-x
Travel photography with Ricoh GR Digital III
54
good battery power (1,900 shots)
flash built-in
does not have Time Lapse recording
megapixel count low (12MP)
display is not selfie friendly
63
has built in flash
good maximum aperture (f1.9)
low MP (10 megapixels)
screen isn't selfie friendly
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Landscape Comparison

Pentax K-x Landscape photography information
Ricoh GR Digital III Landscape photography information
61
you can focus manually
switch lenses (Pentax KAF2 mount)
image stabilization (Sensor based)
sensor size is decent (APS-C)
exports RAW formats
good battery power (1,900 shots)
screen is small (2.7 inches)
megapixel count low (12MP)
does not have Time Lapse recording
45
has manual focus
good maximum aperture (f1.9)
screen is a decent size (3 inch)
supports RAW files
fixed lens (fixed lens mount)
focal length is fixed (28mm)
no image stabilization
low MP (10 megapixels)
very small sensor size (1/1.7")
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Vlogging Comparison

Pentax K-x as a Vlogging camera
Ricoh GR Digital III as a Vlogging camera
27
image stabilization (Sensor based)
offers face detection focus
display is not selfie friendly
video quality not great (1280 x 720 pixels)
does not have external mic jack
25
good maximum aperture (f1.9)
screen isn't selfie friendly
no image stabilization
video res low (640 x 480 pxls)
does not have external mic jack
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Pentax K-x vs Ricoh GR Digital III Specifications

Detailed spec comparison table for Pentax K-x and Ricoh GR Digital III
 Pentax K-xRicoh GR Digital III
General Information
Brand Name Pentax Ricoh
Model Pentax K-x Ricoh GR Digital III
Category Entry-Level DSLR Small Sensor Compact
Introduced 2009-12-23 2009-07-27
Body design Compact SLR Compact
Sensor Information
Powered by Prime GR engine III
Sensor type CMOS CCD
Sensor size APS-C 1/1.7"
Sensor dimensions 23.6 x 15.8mm 7.44 x 5.58mm
Sensor surface area 372.9mm² 41.5mm²
Sensor resolution 12 megapixel 10 megapixel
Anti aliasing filter
Aspect ratio 3:2 1:1, 4:3 and 3:2
Max resolution 4288 x 2848 3648 x 2736
Max native ISO 6400 1600
Max enhanced ISO 12800 -
Lowest native ISO 100 64
RAW pictures
Autofocusing
Focus manually
AF touch
Continuous AF
AF single
AF tracking
AF selectice
Center weighted AF
AF multi area
Live view AF
Face detection focusing
Contract detection focusing
Phase detection focusing
Number of focus points 11 -
Lens
Lens mounting type Pentax KAF2 fixed lens
Lens focal range - 28mm (1x)
Maximal aperture - f/1.9
Macro focus range - 1cm
Number of lenses 151 -
Focal length multiplier 1.5 4.8
Screen
Screen type Fixed Type Fixed Type
Screen size 2.7" 3"
Resolution of screen 230k dot 920k dot
Selfie friendly
Liveview
Touch capability
Screen technology TFT LCD monitor -
Viewfinder Information
Viewfinder type Optical (pentamirror) Optical (optional)
Viewfinder coverage 96 percent -
Viewfinder magnification 0.57x -
Features
Min shutter speed 30s 1s
Max shutter speed 1/6000s 1/2000s
Continuous shutter speed 5.0 frames/s -
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Change WB
Image stabilization
Inbuilt flash
Flash range 16.00 m 3.00 m
Flash modes Auto, On, Off, Red-Eye, Slow Sync, Rear curtain, Wireless Auto, On, Off, Red-Eye, Slow Sync, Manual
Hot shoe
AEB
White balance bracketing
Max flash sync 1/180s -
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Video resolutions 1280 x 720 (24 fps), 640 x 416 (24 fps) 640 x 480 (30, 15 fps), 320 x 240 (30, 15 fps)
Max video resolution 1280x720 640x480
Video data format Motion JPEG -
Mic input
Headphone input
Connectivity
Wireless None None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environmental seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 580 grams (1.28 lbs) 208 grams (0.46 lbs)
Physical dimensions 123 x 92 x 68mm (4.8" x 3.6" x 2.7") 109 x 59 x 26mm (4.3" x 2.3" x 1.0")
DXO scores
DXO Overall score 72 not tested
DXO Color Depth score 22.8 not tested
DXO Dynamic range score 12.5 not tested
DXO Low light score 811 not tested
Other
Battery life 1900 photos -
Battery format Battery Pack -
Battery model 4 x AA -
Self timer Yes (2 or 12 sec) Yes (2 or 10 sec)
Time lapse feature
Type of storage SD/SDHC card SD/SDHC, Internal
Storage slots 1 1
Cost at release $600 $399