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Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP2s

Portability
88
Imaging
52
Features
37
Overall
46
Ricoh GXR GR Lens A12 28mm F2.5 front
 
Sigma DP2s front
Portability
86
Imaging
44
Features
31
Overall
38

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP2s 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
  • Launched September 2010
Sigma DP2s
(Full Review)
  • 5MP - APS-C Sensor
  • 2.5" Fixed Screen
  • ISO 50 - 3200
  • 320 x 240 video
  • 41mm (F) lens
  • 280g - 113 x 60 x 56mm
  • Revealed February 2010
  • Earlier Model is Sigma DP2
  • New Model is Sigma DP2x
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Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP2s Overview

Let's take a more detailed look at the Ricoh GXR GR Lens A12 28mm F2.5 and Sigma DP2s, one being a Advanced Mirrorless and the latter is a Large Sensor Compact by brands Ricoh and Sigma. There exists a significant gap between the image resolutions of the GXR GR Lens A12 28mm F2.5 (12MP) and DP2s (5MP) but both cameras offer the same sensor sizes (APS-C).

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The GXR GR Lens A12 28mm F2.5 was announced 8 months later than the DP2s so they are both of a similar generation. The two cameras have different body design with the Ricoh GXR GR Lens A12 28mm F2.5 being a Rangefinder-style mirrorless camera and the Sigma DP2s being a Large Sensor Compact camera.

Before going straight to a in-depth comparison, here is a brief highlight of how the GXR GR Lens A12 28mm F2.5 matches up vs the DP2s in regards to portability, imaging, features and an overall grade.

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Reasons to pick Ricoh GXR GR Lens A12 28mm F2.5 over the Sigma DP2s

 GXR GR Lens A12 28mm F2.5 DP2s 
RevealedSeptember 2010February 2010More recent by 8 months
Screen dimensions3"2.5"Bigger screen (+0.5")
Screen resolution920k230kSharper screen (+690k dot)

Reasons to pick Sigma DP2s over the Ricoh GXR GR Lens A12 28mm F2.5

 DP2s GXR GR Lens A12 28mm F2.5 

Common features in the Ricoh GXR GR Lens A12 28mm F2.5 and Sigma DP2s

 GXR GR Lens A12 28mm F2.5 DP2s 
Manual focus Dial precise focus
Screen typeFixed Fixed Fixed screen
Selfie screen Lack of selfie screen
Touch friendly screen Lack of Touch friendly screen

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP2s Physical Comparison

If you're aiming to lug around your camera, you will need to think about its weight and volume. The Ricoh GXR GR Lens A12 28mm F2.5 offers outside dimensions of 113mm x 70mm x 56mm (4.4" x 2.8" x 2.2") having a weight of 140 grams (0.31 lbs) whilst the Sigma DP2s has sizing 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 and Sigma DP2s in the new Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Always remember, the weight of an Interchangeable Lens Camera will vary depending on the lens you have attached during that time. Below is a front view size comparison of the GXR GR Lens A12 28mm F2.5 vs the DP2s.

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP2s size comparison

Taking into consideration dimensions and weight, the portability grade of the GXR GR Lens A12 28mm F2.5 and DP2s is 88 and 86 respectively.

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP2s top view buttons comparison

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP2s Sensor Comparison

Sometimes, it's hard to envision the gap between sensor measurements purely by looking at specs. The photograph here might offer you a more clear sense of the sensor dimensions in the GXR GR Lens A12 28mm F2.5 and DP2s.

As you can plainly see, both of these cameras have the same sensor dimensions albeit not the same MP. You should count on the Ricoh GXR GR Lens A12 28mm F2.5 to resolve more detail with its extra 7 Megapixels. Higher resolution can also make it easier to crop photographs a bit more aggressively. The newer GXR GR Lens A12 28mm F2.5 is going to have an edge with regard to sensor innovation.

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP2s sensor size comparison

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP2s Screen and ViewFinder

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP2s Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Ricoh GXR GR Lens A12 28mm F2.5 Portrait photography advice
Sigma DP2s Portrait photography advice
57
has manual focus
sensor size is nice (APS-C)
supports face detection autofocus
exports RAW formats
no liveview feature
sensor resolution low (12 megapixels)
56
focusing manually
decent sensor size (APS-C)
supports RAW files
low megapixels (5 megapixels)
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Street Comparison

Ricoh GXR GR Lens A12 28mm F2.5 Street photography features
Sigma DP2s Street photography features
70
sensor size is nice (APS-C)
exports RAW formats
lighter than competitors (140g)
no moving screen
does not have image stabilization
67
decent sensor size (APS-C)
supports RAW files
lighter than average in class (280g)
no moving screen
lack of image stabilization
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Sports Comparison

Ricoh GXR GR Lens A12 28mm F2.5 as a Sports photography camera
Sigma DP2s as a Sports photography camera
32
sensor size is nice (APS-C)
fixed focal length (28mm)
no liveview feature
continuous shooting slow (5.0 frames per second)
does not have image stabilization
sensor resolution low (12MP)
low battery power (320 per charge)
lacks phase detect autofocus
30
decent sensor size (APS-C)
can't change focal length (41mm)
very slow continuous shooting (3.0 frames/s)
lack of image stabilization
low megapixels (5MP)
lack of phase detect AF
Photography Glossary

Travel Comparison

Ricoh GXR GR Lens A12 28mm F2.5 Travel photography information
Sigma DP2s Travel photography information
58
lighter than competitors (140 grams)
built-in flash
low battery power (320 per charge)
sensor resolution low (12 megapixels)
screen is not selfie friendly
somewhat slow max aperture (f2.5)
67
lighter than average in class (280 grams)
flash built-in
great max aperture (f)
low megapixels (5 megapixels)
display isn't selfie friendly
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Landscape Comparison

Landscape photography with Ricoh GXR GR Lens A12 28mm F2.5
Landscape photography with Sigma DP2s
47
has manual focus
decent sized screen (3")
sensor size is nice (APS-C)
exports RAW formats
lens is fixed (fixed lens mount)
fixed focal length (28mm)
somewhat slow max aperture (f2.5)
no liveview feature
does not have image stabilization
sensor resolution low (12 megapixels)
low battery power (320 per charge)
48
focusing manually
great max aperture (f)
decent sensor size (APS-C)
supports RAW files
lens is fixed (fixed lens mount)
can't change focal length (41mm)
screen is small (2.5 inch)
lack of image stabilization
low megapixels (5MP)
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Vlogging Comparison

Ricoh GXR GR Lens A12 28mm F2.5 Vlogging information
Sigma DP2s Vlogging information
28
supports face detection autofocus
lighter than competitors (140 grams)
somewhat slow max aperture (f2.5)
screen is not selfie friendly
does not have image stabilization
video res low (1280 x 720 resolution)
lack of external microphone support
28
great max aperture (f)
lighter than average in class (280 grams)
display isn't selfie friendly
lack of image stabilization
video quality not great (320 x 240 pxls)
lack of microphone support
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Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP2s Specifications

Detailed spec comparison table for Ricoh GXR GR Lens A12 28mm F2.5 and Sigma DP2s
 Ricoh GXR GR Lens A12 28mm F2.5Sigma DP2s
General Information
Company Ricoh Sigma
Model Ricoh GXR GR Lens A12 28mm F2.5 Sigma DP2s
Type Advanced Mirrorless Large Sensor Compact
Launched 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 measurements 23.6 x 15.7mm 20.7 x 13.8mm
Sensor 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 and 16:9
Max resolution 4288 x 2848 2640 x 1760
Max native ISO 3200 3200
Minimum native ISO 200 50
RAW pictures
Autofocusing
Manual focus
AF touch
Continuous AF
Single AF
AF tracking
Selective AF
Center weighted AF
AF multi area
AF live view
Face detect focusing
Contract detect focusing
Phase detect focusing
Lens
Lens mount fixed lens fixed lens
Lens focal range 28mm (1x) 41mm (1x)
Maximal aperture f/2.5 -
Focal length multiplier 1.5 1.7
Screen
Type of display Fixed Type Fixed Type
Display size 3" 2.5"
Display resolution 920k dots 230k dots
Selfie friendly
Liveview
Touch function
Display tech TFT color LCD -
Viewfinder Information
Viewfinder type Electronic (optional) None
Features
Min shutter speed 180s 15s
Max shutter speed 1/3200s 1/2000s
Continuous shutter rate 5.0 frames per sec 3.0 frames per sec
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Set WB
Image stabilization
Inbuilt flash
Flash range - 4.30 m
Flash settings Auto, On, Off, Red-Eye, Slow Sync, Manual Forced Flash, Red-Eye Reduction, Slow Synchro
Hot shoe
Auto exposure bracketing
White balance bracketing
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Supported video resolutions 1280 x 720 (24 fps), 640 x 480 (24 fps), 320 x 240 (24 fps) 320 x 240
Max video resolution 1280x720 320x240
Video data format MPEG-4 Motion JPEG
Microphone support
Headphone support
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 proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 140 gr (0.31 lbs) 280 gr (0.62 lbs)
Physical 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 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 images -
Battery style Battery Pack -
Battery model DB-90 -
Self timer Yes (2 or 10 sec, 10 sec (3 images) ) Yes (2 or 10 sec)
Time lapse shooting
Storage type SD/SDHC, Internal SD/SDHC/MMC card
Card slots One One
Pricing at release $566 $940