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Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP1s

Portability
88
Imaging
53
Features
37
Overall
46
Ricoh GXR GR Lens A12 28mm F2.5 front
 
Sigma DP1s front
Portability
90
Imaging
44
Features
30
Overall
38

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP1s 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 DP1s
(Full Review)
  • 5MP - APS-C Sensor
  • 2.5" Fixed Screen
  • ISO 100 - 800
  • No Video
  • 28mm (F) lens
  • 270g - 109 x 60 x 31mm
  • Released October 2009
  • Earlier Model is Sigma DP1
  • Successor is Sigma DP1x
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Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP1s Overview

Below is a detailed assessment of the Ricoh GXR GR Lens A12 28mm F2.5 versus Sigma DP1s, former being a Advanced Mirrorless while the latter is a Large Sensor Compact by rivals Ricoh and Sigma. There exists a sizable gap among the sensor resolutions of the GXR GR Lens A12 28mm F2.5 (12MP) and DP1s (5MP) but they feature the same exact sensor size (APS-C).

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The GXR GR Lens A12 28mm F2.5 was launched 12 months later than the DP1s which means that they are both of a similar age. Each of these cameras offer different body type with the Ricoh GXR GR Lens A12 28mm F2.5 being a Rangefinder-style mirrorless camera and the Sigma DP1s being a Large Sensor Compact camera.

Before getting through a full comparison, below is a short introduction of how the GXR GR Lens A12 28mm F2.5 scores vs the DP1s when it comes 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 DP1s

 GXR GR Lens A12 28mm F2.5 DP1s 
ReleasedSeptember 2010October 2009More recent by 12 months
Screen sizing3"2.5"Bigger screen (+0.5")
Screen resolution920k230kClearer screen (+690k dot)

Reasons to pick Sigma DP1s over the Ricoh GXR GR Lens A12 28mm F2.5

 DP1s GXR GR Lens A12 28mm F2.5 

Common features in the Ricoh GXR GR Lens A12 28mm F2.5 and Sigma DP1s

 GXR GR Lens A12 28mm F2.5 DP1s 
Manual focus More precise focusing
Screen typeFixed Fixed Fixed screen
Selfie screen Neither features selfie screen
Touch screen Missing Touch screen

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP1s Physical Comparison

If you are aiming to lug around your camera, you'll need to consider its weight and proportions. The Ricoh GXR GR Lens A12 28mm F2.5 enjoys outside 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 DP1s has measurements of 109mm x 60mm x 31mm (4.3" x 2.4" x 1.2") along with a weight of 270 grams (0.60 lbs).

Check out the Ricoh GXR GR Lens A12 28mm F2.5 versus Sigma DP1s in our brand new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember that, the weight of an ILC will change dependant on the lens you have at that moment. Underneath is the front view dimension comparison of the GXR GR Lens A12 28mm F2.5 against the DP1s.

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP1s size comparison

Considering dimensions and weight, the portability score of the GXR GR Lens A12 28mm F2.5 and DP1s is 88 and 90 respectively.

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP1s top view buttons comparison

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP1s Sensor Comparison

Sometimes, it is very hard to visualize the difference in sensor measurements just by checking out technical specs. The visual underneath will provide you a better sense of the sensor sizes in the GXR GR Lens A12 28mm F2.5 and DP1s.

As you have seen, both of these cameras offer the same exact sensor sizing albeit different MP. You can count on the Ricoh GXR GR Lens A12 28mm F2.5 to show greater detail utilizing its extra 7 Megapixels. Higher resolution will also allow you to crop shots a little more aggressively. The more modern GXR GR Lens A12 28mm F2.5 provides an edge with regard to sensor technology.

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP1s sensor size comparison

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP1s Screen and ViewFinder

Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP1s Screen and Viewfinder comparison
Photography Glossary

Photography Type Scores

Portrait Comparison

Ricoh GXR GR Lens A12 28mm F2.5 Portrait photography highlights
Sigma DP1s Portrait photography highlights
58
manual focus
sensor size is good (APS-C)
comes with face detect autofocus
delivers RAW files
doesn't have liveview
low megapixels (12MP)
56
has manual focus
sensor size is decent (APS-C)
delivers RAW formats
sensor resolution not great (5 megapixels)
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Street Comparison

Ricoh GXR GR Lens A12 28mm F2.5 as a Street photography camera
Sigma DP1s as a Street photography camera
70
sensor size is good (APS-C)
delivers RAW files
lighter than competitors in class (140 grams)
fixed screen
does not have image stabilization
66
sensor size is decent (APS-C)
delivers RAW formats
lighter than others (270 grams)
fixed screen
no image stabilization
low maximum ISO (800)
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Sports Comparison

Ricoh GXR GR Lens A12 28mm F2.5 as a Sports photography camera
Sigma DP1s as a Sports photography camera
32
sensor size is good (APS-C)
can't change focal length (28mm)
doesn't have liveview
continuous shooting slow (5.0 frames per second)
does not have image stabilization
low megapixels (12 megapixels)
not so great battery life (320 per charge)
no phase detect autofocus
32
sensor size is decent (APS-C)
can't change focal length (28mm)
no image stabilization
sensor resolution not great (5 megapixels)
no phase detect AF
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Travel Comparison

Ricoh GXR GR Lens A12 28mm F2.5 Travel photography info
Sigma DP1s Travel photography info
59
lighter than competitors in class (140 grams)
built-in flash
not so great battery life (320 shots)
low megapixels (12MP)
display isn't selfie friendly
slow max aperture (f2.5)
64
lighter than others (270g)
has built in flash
fast max aperture (f)
lack of Time Lapse mode
sensor resolution not great (5MP)
screen is not selfie friendly
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Landscape Comparison

Ricoh GXR GR Lens A12 28mm F2.5 Landscape photography info
Sigma DP1s Landscape photography info
48
manual focus
nice screen size (3")
sensor size is good (APS-C)
delivers RAW files
lens is fixed (fixed lens mount)
can't change focal length (28mm)
slow max aperture (f2.5)
doesn't have liveview
does not have image stabilization
low megapixels (12MP)
not so great battery life (320 CIPA)
44
has manual focus
fast max aperture (f)
sensor size is decent (APS-C)
delivers RAW formats
fixed lens (fixed lens mount)
can't change focal length (28mm)
tiny screen (2.5")
no image stabilization
sensor resolution not great (5MP)
low maximum ISO (800)
lack of Time Lapse mode
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Vlogging Comparison

Ricoh GXR GR Lens A12 28mm F2.5 Vlogging info
Sigma DP1s Vlogging info
28
comes with face detect autofocus
lighter than competitors in class (140 grams)
slow max aperture (f2.5)
display isn't selfie friendly
does not have image stabilization
video resolution low (1280 x 720 resolution)
no microphone socket
9
no video shooting
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Ricoh GXR GR Lens A12 28mm F2.5 vs Sigma DP1s Specifications

Detailed spec comparison table for Ricoh GXR GR Lens A12 28mm F2.5 and Sigma DP1s
 Ricoh GXR GR Lens A12 28mm F2.5Sigma DP1s
General Information
Brand Ricoh Sigma
Model type Ricoh GXR GR Lens A12 28mm F2.5 Sigma DP1s
Category Advanced Mirrorless Large Sensor Compact
Launched 2010-09-21 2009-10-02
Physical type Rangefinder-style mirrorless Large Sensor Compact
Sensor Information
Processor GR Engine III -
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 megapixels 5 megapixels
Anti alias filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 3:2
Max resolution 4288 x 2848 2640 x 1760
Max native ISO 3200 800
Lowest native ISO 200 100
RAW support
Autofocusing
Manual focusing
Autofocus touch
Autofocus continuous
Autofocus single
Autofocus tracking
Selective autofocus
Center weighted autofocus
Multi area autofocus
Autofocus live view
Face detection focus
Contract detection focus
Phase detection focus
Lens
Lens support fixed lens fixed lens
Lens zoom range 28mm (1x) 28mm (1x)
Maximum aperture f/2.5 -
Focal length multiplier 1.5 1.7
Screen
Screen type Fixed Type Fixed Type
Screen size 3" 2.5"
Resolution of screen 920 thousand dots 230 thousand dots
Selfie friendly
Liveview
Touch functionality
Screen technology TFT color LCD -
Viewfinder Information
Viewfinder Electronic (optional) None
Features
Minimum shutter speed 180 secs 30 secs
Fastest shutter speed 1/3200 secs 1/4000 secs
Continuous shutter rate 5.0fps -
Shutter priority
Aperture priority
Manual mode
Exposure compensation Yes Yes
Change white balance
Image stabilization
Integrated flash
Flash modes Auto, On, Off, Red-Eye, Slow Sync, Manual -
External flash
AEB
White balance bracketing
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Supported video resolutions 1280 x 720 (24 fps), 640 x 480 (24 fps), 320 x 240 (24 fps) -
Max video resolution 1280x720 None
Video data format MPEG-4 Motion JPEG
Mic port
Headphone port
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 proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 140g (0.31 lbs) 270g (0.60 lbs)
Dimensions 113 x 70 x 56mm (4.4" x 2.8" x 2.2") 109 x 60 x 31mm (4.3" x 2.4" x 1.2")
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 pictures -
Battery type Battery Pack -
Battery ID DB-90 -
Self timer Yes (2 or 10 sec, 10 sec (3 images) ) Yes (10 sec)
Time lapse shooting
Storage type SD/SDHC, Internal SD/MMC card
Card slots One One
Launch pricing $566 $0