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Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP2x

Portability
88
Imaging
52
Features
37
Overall
46
Ricoh GXR GR Lens A12 28mm F2.5 front
 
Sigma DP2x front
Portability
86
Imaging
45
Features
31
Overall
39

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP2x Key Specs

Ricoh GXR GR Lens A12 28mm F2.5
(Full Review)
  • 12MP - APS-C Sensor
  • 3" Fixed Screen
  • ISO 200 - 3200
  • 1280 x 720 video
  • 28mm (F2.5) lens
  • 140g - 113 x 70 x 56mm
  • Launched September 2010
Sigma DP2x
(Full Review)
  • 5MP - APS-C Sensor
  • 2.5" Fixed Screen
  • ISO 100 - 3200
  • 320 x 240 video
  • 41mm (F) lens
  • 280g - 113 x 60 x 56mm
  • Announced February 2011
  • Old Model is Sigma DP2s
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Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP2x Overview

Lets take a closer look at the Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP2x, one is a Advanced Mirrorless and the latter is a Large Sensor Compact by rivals Ricoh and Sigma. There exists a big gap among the resolutions of the GXR GR Lens A12 28mm F2.5 (12MP) and DP2x (5MP) but they enjoy the exact same sensor sizes (APS-C).

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The GXR GR Lens A12 28mm F2.5 was released 4 months prior to the DP2x which means that they are of a similar generation. Each of the cameras come with different body type with the Ricoh GXR GR Lens A12 28mm F2.5 being a Rangefinder-style mirrorless camera and the Sigma DP2x being a Large Sensor Compact camera.

Before diving in to a comprehensive comparison, below is a simple summary of how the GXR GR Lens A12 28mm F2.5 grades versus the DP2x for portability, imaging, features and an overall score.

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Reasons to pick Ricoh GXR GR Lens A12 28mm F2.5 over the Sigma DP2x

 GXR GR Lens A12 28mm F2.5 DP2x 
Screen dimension3"2.5"Bigger screen (+0.5")
Screen resolution920k230kClearer screen (+690k dot)

Reasons to pick Sigma DP2x over the Ricoh GXR GR Lens A12 28mm F2.5

 DP2x GXR GR Lens A12 28mm F2.5 

Common features in the Ricoh GXR GR Lens A12 28mm F2.5 and Sigma DP2x

 GXR GR Lens A12 28mm F2.5 DP2x 
AnnouncedSeptember 2010February 2011Same generation
Focus manually More precise focusing
Screen typeFixed Fixed Fixed screen
Selfie screen Neither includes selfie screen
Touch friendly screen Neither includes Touch friendly screen

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP2x Physical Comparison

When you are intending to carry around your camera regularly, you need to think about its weight and proportions. The Ricoh GXR GR Lens A12 28mm F2.5 features external dimensions of 113mm x 70mm x 56mm (4.4" x 2.8" x 2.2") along with a weight of 140 grams (0.31 lbs) and the Sigma DP2x has measurements of 113mm x 60mm x 56mm (4.4" x 2.4" x 2.2") with a weight of 280 grams (0.62 lbs).

Examine the Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP2x in the new Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Don't forget, the weight of an Interchangeable Lens Camera will change dependant on the lens you choose at the time. Below is the front view measurement comparison of the GXR GR Lens A12 28mm F2.5 vs the DP2x.

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP2x size comparison

Taking into consideration dimensions and weight, the portability rating of the GXR GR Lens A12 28mm F2.5 and DP2x is 88 and 86 respectively.

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP2x top view buttons comparison

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP2x Sensor Comparison

Typically, it can be tough to visualize the difference in sensor sizes only by viewing a spec sheet. The pic below will offer you a far better sense of the sensor dimensions in the GXR GR Lens A12 28mm F2.5 and DP2x.

Clearly, each of these cameras posses the exact same sensor measurements albeit different resolution. You should expect the Ricoh GXR GR Lens A12 28mm F2.5 to render more detail as a result of its extra 7 Megapixels. Higher resolution can also help you crop pictures somewhat more aggressively.

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP2x sensor size comparison

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP2x Screen and ViewFinder

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP2x Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Ricoh GXR GR Lens A12 28mm F2.5 Portrait photography info
Sigma DP2x Portrait photography info
57
manual focus
sensor size is nice (APS-C)
includes face detect focus
saves RAW files
doesn't have liveview
low MP (12 megapixels)
57
you can focus manually
good sensor size (APS-C)
delivers RAW formats
sensor resolution low (5MP)
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Street Comparison

Ricoh GXR GR Lens A12 28mm F2.5 Street photography highlights
Sigma DP2x Street photography highlights
70
sensor size is nice (APS-C)
saves RAW files
lighter than competition (140g)
screen is fixed
lack of image stabilization
68
good sensor size (APS-C)
delivers RAW formats
lighter than competition in class (280 grams)
screen does not articulate
lack of image stabilization
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Sports Comparison

Ricoh GXR GR Lens A12 28mm F2.5 Sports photography information
Sigma DP2x Sports photography information
32
sensor size is nice (APS-C)
can't change focal length (28mm)
doesn't have liveview
low fps (5.0 frames per second)
lack of image stabilization
low MP (12MP)
not so great battery (320 shots)
doesn't have phase detect auto focus
30
good sensor size (APS-C)
fixed focal length (41mm)
continuous shooting slow (3.0 frames/s)
lack of image stabilization
sensor resolution low (5 megapixels)
no phase detect AF
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Travel Comparison

Ricoh GXR GR Lens A12 28mm F2.5 Travel photography info
Sigma DP2x Travel photography info
58
lighter than competition (140g)
flash built-in
not so great battery (320 shots)
low MP (12 megapixels)
screen isn't selfie friendly
slow maximum aperture (f2.5)
67
lighter than competition in class (280g)
flash built-in
fast max aperture (f)
sensor resolution low (5 megapixels)
does not posses selfie friendly screen
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Landscape Comparison

Ricoh GXR GR Lens A12 28mm F2.5 Landscape photography advice
Sigma DP2x Landscape photography advice
47
manual focus
decent sized screen (3 inch)
sensor size is nice (APS-C)
saves RAW files
fixed lens (fixed lens mount)
can't change focal length (28mm)
slow maximum aperture (f2.5)
doesn't have liveview
lack of image stabilization
low MP (12MP)
not so great battery (320 per charge)
48
you can focus manually
fast max aperture (f)
good sensor size (APS-C)
delivers RAW formats
can't swap lenses (fixed lens mount)
fixed focal length (41mm)
screen is small (2.5 inches)
lack of image stabilization
sensor resolution low (5 megapixels)
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Vlogging Comparison

Ricoh GXR GR Lens A12 28mm F2.5 Vlogging information
Sigma DP2x Vlogging information
28
includes face detect focus
lighter than competition (140 grams)
slow maximum aperture (f2.5)
screen isn't selfie friendly
lack of image stabilization
low quality video (1280 x 720 pxls)
lack of microphone jack
28
fast max aperture (f)
lighter than competition in class (280 grams)
does not posses selfie friendly screen
lack of image stabilization
low video resolution (320 x 240 pixels)
doesn't have microphone socket
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Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP2x Specifications

Detailed spec comparison table for Ricoh GXR GR Lens A12 28mm F2.5 and Sigma DP2x
 Ricoh GXR GR Lens A12 28mm F2.5Sigma DP2x
General Information
Manufacturer Ricoh Sigma
Model type Ricoh GXR GR Lens A12 28mm F2.5 Sigma DP2x
Category Advanced Mirrorless Large Sensor Compact
Launched 2010-09-21 2011-02-08
Physical type Rangefinder-style mirrorless Large Sensor Compact
Sensor Information
Processor GR Engine III True II
Sensor type CMOS CMOS (Foveon X3)
Sensor size APS-C APS-C
Sensor measurements 23.6 x 15.7mm 20.7 x 13.8mm
Sensor area 370.5mm² 285.7mm²
Sensor resolution 12MP 5MP
Anti alias filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 3:2 and 16:9
Highest Possible resolution 4288 x 2848 2640 x 1760
Maximum native ISO 3200 3200
Min native ISO 200 100
RAW data
Autofocusing
Focus manually
Autofocus touch
Continuous autofocus
Single autofocus
Tracking autofocus
Selective autofocus
Center weighted autofocus
Autofocus multi area
Autofocus live view
Face detection autofocus
Contract detection autofocus
Phase detection autofocus
Cross type focus points - -
Lens
Lens support fixed lens fixed lens
Lens zoom range 28mm (1x) 41mm (1x)
Largest aperture f/2.5 -
Focal length multiplier 1.5 1.7
Screen
Type of screen Fixed Type Fixed Type
Screen diagonal 3 inches 2.5 inches
Resolution of screen 920 thousand dots 230 thousand dots
Selfie friendly
Liveview
Touch friendly
Screen tech TFT color LCD -
Viewfinder Information
Viewfinder type Electronic (optional) None
Features
Minimum shutter speed 180 secs 15 secs
Fastest shutter speed 1/3200 secs 1/2000 secs
Continuous shutter rate 5.0fps 3.0fps
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Custom white balance
Image stabilization
Built-in flash
Flash distance - 4.30 m
Flash options Auto, On, Off, Red-Eye, Slow Sync, Manual Forced Flash, Red-Eye Reduction, Slow Synchro
Hot shoe
AEB
WB bracketing
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Video resolutions 1280 x 720 (24 fps), 640 x 480 (24 fps), 320 x 240 (24 fps) 320 x 240
Maximum video resolution 1280x720 320x240
Video file format MPEG-4 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 None None
Physical
Environmental sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 140g (0.31 lbs) 280g (0.62 lbs)
Dimensions 113 x 70 x 56mm (4.4" x 2.8" x 2.2") 113 x 60 x 56mm (4.4" x 2.4" x 2.2")
DXO scores
DXO Overall rating not tested not tested
DXO Color Depth rating not tested not tested
DXO Dynamic range rating not tested not tested
DXO Low light rating not tested not tested
Other
Battery life 320 photos -
Type of battery Battery Pack -
Battery ID DB-90 -
Self timer Yes (2 or 10 sec, 10 sec (3 images) ) Yes (2 or 10 sec)
Time lapse shooting
Type of storage SD/SDHC, Internal SD/SDHC/MMC
Card slots One One
Launch cost $566 $699