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Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP1x

Portability
88
Imaging
52
Features
37
Overall
46
Ricoh GXR GR Lens A12 28mm F2.5 front
 
Sigma DP1x front
Portability
88
Imaging
44
Features
27
Overall
37

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP1x Key Specs

Ricoh GXR GR Lens A12 28mm F2.5
(Full Review)
  • 12MP - APS-C Sensor
  • 3" Fixed Display
  • ISO 200 - 3200
  • 1280 x 720 video
  • 28mm (F2.5) lens
  • 140g - 113 x 70 x 56mm
  • Released September 2010
Sigma DP1x
(Full Review)
  • 5MP - APS-C Sensor
  • 2.5" Fixed Screen
  • ISO 100 - 3200
  • 320 x 240 video
  • 28mm (F4.0) lens
  • 250g - 113 x 60 x 50mm
  • Revealed February 2010
  • Old Model is Sigma DP1s
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Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP1x Overview

Following is a in depth assessment of the Ricoh GXR GR Lens A12 28mm F2.5 versus Sigma DP1x, former is a Advanced Mirrorless while the latter is a Large Sensor Compact by competitors Ricoh and Sigma. There exists a substantial gap between the sensor resolutions of the GXR GR Lens A12 28mm F2.5 (12MP) and DP1x (5MP) but both cameras have the identical sensor measurements (APS-C).

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The GXR GR Lens A12 28mm F2.5 was introduced 8 months after the DP1x which means that they are of a similar age. Each of these cameras feature different body design with the Ricoh GXR GR Lens A12 28mm F2.5 being a Rangefinder-style mirrorless camera and the Sigma DP1x being a Large Sensor Compact camera.

Before getting into a more detailed comparison, here is a simple summary of how the GXR GR Lens A12 28mm F2.5 matches up vs the DP1x with regards to 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 DP1x

 GXR GR Lens A12 28mm F2.5 DP1x 
RevealedSeptember 2010February 2010More modern by 8 months
Screen size3"2.5"Bigger screen (+0.5")
Screen resolution920k230kSharper screen (+690k dot)

Reasons to pick Sigma DP1x over the Ricoh GXR GR Lens A12 28mm F2.5

 DP1x GXR GR Lens A12 28mm F2.5 

Common features in the Ricoh GXR GR Lens A12 28mm F2.5 and Sigma DP1x

 GXR GR Lens A12 28mm F2.5 DP1x 
Manual focus Very accurate focus
Screen typeFixed Fixed Fixed screen
Selfie screen No selfie screen
Touch screen No Touch screen

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP1x Physical Comparison

For anyone who is looking to carry around your camera regularly, you're going to have to factor in its weight and size. The Ricoh GXR GR Lens A12 28mm F2.5 provides exterior dimensions of 113mm x 70mm x 56mm (4.4" x 2.8" x 2.2") having a weight of 140 grams (0.31 lbs) while the Sigma DP1x has specifications of 113mm x 60mm x 50mm (4.4" x 2.4" x 2.0") accompanied by a weight of 250 grams (0.55 lbs).

Examine the Ricoh GXR GR Lens A12 28mm F2.5 versus Sigma DP1x in our brand new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into consideration, the weight of an ILC will change depending on the lens you select at that time. Following is a front view scale comparison of the GXR GR Lens A12 28mm F2.5 compared to the DP1x.

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP1x size comparison

Using dimensions and weight, the portability rating of the GXR GR Lens A12 28mm F2.5 and DP1x is 88 and 88 respectively.

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP1x top view buttons comparison

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP1x Sensor Comparison

Sometimes, its difficult to envision the contrast between sensor sizes merely by reading specifications. The picture underneath might give you a far better sense of the sensor sizes in the GXR GR Lens A12 28mm F2.5 and DP1x.

To sum up, each of the cameras feature the identical sensor size albeit not the same MP. You can expect the Ricoh GXR GR Lens A12 28mm F2.5 to offer greater detail using its extra 7 Megapixels. Higher resolution will also help you crop photographs way more aggressively. The younger GXR GR Lens A12 28mm F2.5 will have an edge in sensor technology.

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP1x sensor size comparison

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP1x Screen and ViewFinder

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP1x Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Ricoh GXR GR Lens A12 28mm F2.5 as a Portrait photography camera
Sigma DP1x as a Portrait photography camera
57
has manual focus
sensor size is good (APS-C)
comes with face detection autofocus
supports RAW formats
no liveview feature
resolution not great (12MP)
56
manual focus
sensor size is good (APS-C)
supports RAW files
resolution not great (5MP)
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Street Comparison

Ricoh GXR GR Lens A12 28mm F2.5 as a Street photography camera
Sigma DP1x as a Street photography camera
70
sensor size is good (APS-C)
supports RAW formats
lighter than average in class (140 grams)
screen does not articulate
does not have image stabilization
68
sensor size is good (APS-C)
supports RAW files
lighter than others (250g)
screen is fixed
does not have image stabilization
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Sports Comparison

Sports photography with Ricoh GXR GR Lens A12 28mm F2.5
Sports photography with Sigma DP1x
32
sensor size is good (APS-C)
can't change focal length (28mm)
no liveview feature
max fps low (5.0 frames/s)
does not have image stabilization
resolution not great (12 megapixels)
low battery pack (320 shots)
doesn't have phase detect autofocus
32
sensor size is good (APS-C)
can't change focal length (28mm)
does not have image stabilization
resolution not great (5MP)
has no phase detect autofocus
Photography Glossary

Travel Comparison

Ricoh GXR GR Lens A12 28mm F2.5 Travel photography features
Sigma DP1x Travel photography features
58
lighter than average in class (140g)
has built in flash
low battery pack (320 per charge)
resolution not great (12MP)
display is not selfie friendly
somewhat slow maximum aperture (f2.5)
57
lighter than others (250 grams)
flash built-in
doesn't have Time Lapse mode
resolution not great (5MP)
does not offer selfie friendly display
sluggish max aperture (f4.0)
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Landscape Comparison

Ricoh GXR GR Lens A12 28mm F2.5 Landscape photography factors
Sigma DP1x Landscape photography factors
47
has manual focus
good sized screen (3")
sensor size is good (APS-C)
supports RAW formats
lens is fixed (fixed lens mount)
can't change focal length (28mm)
somewhat slow maximum aperture (f2.5)
no liveview feature
does not have image stabilization
resolution not great (12 megapixels)
low battery pack (320 per charge)
41
manual focus
sensor size is good (APS-C)
supports RAW files
cannot switch lens (fixed lens mount)
can't change focal length (28mm)
sluggish max aperture (f4.0)
tiny screen (2.5 inches)
does not have image stabilization
resolution not great (5 megapixels)
doesn't have Time Lapse mode
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Vlogging Comparison

Ricoh GXR GR Lens A12 28mm F2.5 Vlogging info
Sigma DP1x Vlogging info
28
comes with face detection autofocus
lighter than average in class (140 grams)
somewhat slow maximum aperture (f2.5)
display is not selfie friendly
does not have image stabilization
low quality video (1280 x 720 pixels)
no external microphone port
25
lighter than others (250g)
sluggish max aperture (f4.0)
does not offer selfie friendly display
does not have image stabilization
low res video (320 x 240 resolution)
doesn't have mic support
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Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP1x Specifications

Detailed spec comparison table for Ricoh GXR GR Lens A12 28mm F2.5 and Sigma DP1x
 Ricoh GXR GR Lens A12 28mm F2.5Sigma DP1x
General Information
Manufacturer Ricoh Sigma
Model Ricoh GXR GR Lens A12 28mm F2.5 Sigma DP1x
Type Advanced Mirrorless Large Sensor Compact
Released 2010-09-21 2010-02-20
Physical type Rangefinder-style mirrorless Large Sensor Compact
Sensor Information
Processor Chip GR Engine III True II
Sensor type CMOS CMOS (Foveon X3)
Sensor size APS-C APS-C
Sensor dimensions 23.6 x 15.7mm 20.7 x 13.8mm
Sensor surface area 370.5mm² 285.7mm²
Sensor resolution 12 megapixel 5 megapixel
Anti aliasing filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 3:2
Highest Possible resolution 4288 x 2848 2640 x 1760
Maximum native ISO 3200 3200
Minimum native ISO 200 100
RAW files
Autofocusing
Focus manually
AF touch
AF continuous
Single AF
AF tracking
AF selectice
AF center weighted
Multi area AF
Live view AF
Face detect AF
Contract detect AF
Phase detect AF
Lens
Lens mount fixed lens fixed lens
Lens focal range 28mm (1x) 28mm (1x)
Largest aperture f/2.5 f/4.0
Focal length multiplier 1.5 1.7
Screen
Display type Fixed Type Fixed Type
Display size 3 inches 2.5 inches
Resolution of display 920k dots 230k dots
Selfie friendly
Liveview
Touch operation
Display technology TFT color LCD -
Viewfinder Information
Viewfinder Electronic (optional) None
Features
Min shutter speed 180 seconds 30 seconds
Max shutter speed 1/3200 seconds 1/4000 seconds
Continuous shutter rate 5.0fps -
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Custom WB
Image stabilization
Integrated flash
Flash modes Auto, On, Off, Red-Eye, Slow Sync, Manual -
External flash
AE bracketing
WB bracketing
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
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 format MPEG-4 -
Mic support
Headphone support
Connectivity
Wireless None None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 1.0 (1.5 Mbit/sec)
GPS None None
Physical
Environmental sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 140 grams (0.31 lbs) 250 grams (0.55 lbs)
Physical dimensions 113 x 70 x 56mm (4.4" x 2.8" x 2.2") 113 x 60 x 50mm (4.4" x 2.4" x 2.0")
DXO scores
DXO Overall score not tested not tested
DXO Color Depth score not tested not tested
DXO Dynamic range score not tested not tested
DXO Low light score not tested not tested
Other
Battery life 320 shots -
Battery style Battery Pack -
Battery model DB-90 -
Self timer Yes (2 or 10 sec, 10 sec (3 images) ) Yes (10 sec)
Time lapse feature
Type of storage SD/SDHC, Internal SD/MMC card
Card slots 1 1
Price at release $566 $574