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Ricoh GXR Mount A12 vs Sigma DP1s

Portability
84
Imaging
53
Features
39
Overall
47
Ricoh GXR Mount A12 front
 
Sigma DP1s front
Portability
90
Imaging
44
Features
30
Overall
38

Ricoh GXR Mount A12 vs Sigma DP1s Key Specs

Ricoh GXR Mount A12
(Full Review)
  • 12MP - APS-C Sensor
  • 3" Fixed Display
  • ISO 200 - 3200
  • 1/9000s Maximum Shutter
  • 1280 x 720 video
  • ()mm (F) lens
  • 370g - 120 x 70 x 45mm
  • Revealed August 2011
Sigma DP1s
(Full Review)
  • 5MP - APS-C Sensor
  • 2.5" Fixed Display
  • ISO 100 - 800
  • No Video
  • 28mm (F) lens
  • 270g - 109 x 60 x 31mm
  • Introduced October 2009
  • Superseded the Sigma DP1
  • Refreshed by Sigma DP1x
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Ricoh GXR Mount A12 vs Sigma DP1s Overview

In this write-up, we are reviewing the Ricoh GXR Mount A12 versus Sigma DP1s, former is a Entry-Level Mirrorless while the other is a Large Sensor Compact by brands Ricoh and Sigma. There is a sizable difference between the sensor resolutions of the GXR Mount A12 (12MP) and DP1s (5MP) but they feature the same exact sensor sizing (APS-C).

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The GXR Mount A12 was released 23 months after the DP1s making the cameras a generation away from each other. Both of the cameras offer different body type with the Ricoh GXR Mount A12 being a Rangefinder-style mirrorless camera and the Sigma DP1s being a Large Sensor Compact camera.

Before getting through a comprehensive comparison, below is a brief view of how the GXR Mount A12 grades vs the DP1s in the way of portability, imaging, features and an overall mark.

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Reasons to pick Ricoh GXR Mount A12 over the Sigma DP1s

 GXR Mount A12 DP1s 
IntroducedAugust 2011October 2009Newer by 23 months
Display sizing3"2.5"Larger display (+0.5")
Display resolution920k230kClearer display (+690k dot)

Reasons to pick Sigma DP1s over the Ricoh GXR Mount A12

 DP1s GXR Mount A12 

Common features in the Ricoh GXR Mount A12 and Sigma DP1s

 GXR Mount A12 DP1s 
Manual focus Dial exact focusing
Display typeFixed Fixed Fixed display
Selfie screen Neither has selfie screen
Touch friendly display Missing Touch friendly display

Ricoh GXR Mount A12 vs Sigma DP1s Physical Comparison

When you are looking to travel with your camera frequently, you have to factor in its weight and dimensions. The Ricoh GXR Mount A12 has outer dimensions of 120mm x 70mm x 45mm (4.7" x 2.8" x 1.8") and a weight of 370 grams (0.82 lbs) whilst the Sigma DP1s has dimensions of 109mm x 60mm x 31mm (4.3" x 2.4" x 1.2") accompanied by a weight of 270 grams (0.60 lbs).

Look at the Ricoh GXR Mount A12 versus Sigma DP1s in our brand new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into consideration, the weight of an ILC will vary depending on the lens you select at that moment. Following is the front view dimensions comparison of the GXR Mount A12 versus the DP1s.

Ricoh GXR Mount A12 vs Sigma DP1s size comparison

Factoring in size and weight, the portability score of the GXR Mount A12 and DP1s is 84 and 90 respectively.

Ricoh GXR Mount A12 vs Sigma DP1s top view buttons comparison

Ricoh GXR Mount A12 vs Sigma DP1s Sensor Comparison

Often, it is difficult to visualise the difference between sensor dimensions merely by reading through a spec sheet. The picture here will provide you a stronger sense of the sensor dimensions in the GXR Mount A12 and DP1s.

Clearly, both of the cameras offer the same exact sensor sizing but not the same MP. You can anticipate the Ricoh GXR Mount A12 to give you greater detail as a result of its extra 7 Megapixels. Greater resolution will help you crop photos a little more aggressively. The younger GXR Mount A12 is going to have an edge with regard to sensor tech.

Ricoh GXR Mount A12 vs Sigma DP1s sensor size comparison

Ricoh GXR Mount A12 vs Sigma DP1s Screen and ViewFinder

Ricoh GXR Mount A12 vs Sigma DP1s Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Ricoh GXR Mount A12 as a Portrait photography camera
Sigma DP1s as a Portrait photography camera
55
focusing manually
decent sensor size (APS-C)
delivers RAW formats
no liveview feature
megapixel count low (12 megapixels)
56
focusing manually
good sensor size (APS-C)
saves RAW files
sensor resolution low (5 megapixels)
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Street Comparison

Ricoh GXR Mount A12 Street photography features
Sigma DP1s Street photography features
65
decent sensor size (APS-C)
delivers RAW formats
screen does not articulate
lack of image stabilization
66
good sensor size (APS-C)
saves RAW files
lighter than average (270g)
screen is fixed
lack of image stabilization
low max ISO (800)
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Sports Comparison

Ricoh GXR Mount A12 as a Sports photography camera
Sigma DP1s as a Sports photography camera
39
great max shutter speed (1/9,000 seconds)
decent sensor size (APS-C)
focal length is fixed (()mm)
no liveview feature
slow fps (3.0 fps)
lack of image stabilization
megapixel count low (12MP)
does not have phase detect AF
32
good sensor size (APS-C)
can't change focal length (28mm)
lack of image stabilization
sensor resolution low (5MP)
no phase detect auto focus
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Travel Comparison

Ricoh GXR Mount A12 as a Travel photography camera
Sigma DP1s as a Travel photography camera
60
flash built-in
very good maximum aperture (f)
doesn't have Time Lapse function
megapixel count low (12MP)
does not feature selfie friendly display
64
lighter than average (270g)
built-in flash
great maximum aperture (f)
doesn't have Timelapse function
sensor resolution low (5 megapixels)
display isn't selfie friendly
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Landscape Comparison

Ricoh GXR Mount A12 as a Landscape photography camera
Sigma DP1s as a Landscape photography camera
52
focusing manually
very good maximum aperture (f)
screen size is good (3 inches)
decent sensor size (APS-C)
delivers RAW formats
fixed lens (fixed lens mount)
focal length is fixed (()mm)
no liveview feature
lack of image stabilization
megapixel count low (12MP)
doesn't have Time Lapse function
44
focusing manually
great maximum aperture (f)
good sensor size (APS-C)
saves RAW files
fixed lens (fixed lens mount)
can't change focal length (28mm)
tiny screen (2.5 inch)
lack of image stabilization
sensor resolution low (5 megapixels)
low max ISO (800)
doesn't have Timelapse function
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Vlogging Comparison

Ricoh GXR Mount A12 Vlogging info
Sigma DP1s Vlogging info
26
very good maximum aperture (f)
does not feature selfie friendly display
lack of image stabilization
low res video (1280 x 720 pxls)
doesn't have mic port
9
no video
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Ricoh GXR Mount A12 vs Sigma DP1s Specifications

Detailed spec comparison table for Ricoh GXR Mount A12 and Sigma DP1s
 Ricoh GXR Mount A12Sigma DP1s
General Information
Make Ricoh Sigma
Model Ricoh GXR Mount A12 Sigma DP1s
Class Entry-Level Mirrorless Large Sensor Compact
Revealed 2011-08-05 2009-10-02
Physical type Rangefinder-style mirrorless Large Sensor Compact
Sensor Information
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 surface area 370.5mm² 285.7mm²
Sensor resolution 12 megapixels 5 megapixels
Anti aliasing filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 3:2
Full resolution 4288 x 2848 2640 x 1760
Max native ISO 3200 800
Min native ISO 200 100
RAW photos
Autofocusing
Focus manually
Touch focus
Continuous autofocus
Single autofocus
Autofocus tracking
Selective autofocus
Autofocus center weighted
Autofocus multi area
Autofocus live view
Face detect autofocus
Contract detect autofocus
Phase detect autofocus
Lens
Lens mount fixed lens fixed lens
Lens focal range () 28mm (1x)
Crop factor 1.5 1.7
Screen
Display type Fixed Type Fixed Type
Display diagonal 3 inch 2.5 inch
Resolution of display 920k dots 230k dots
Selfie friendly
Liveview
Touch friendly
Viewfinder Information
Viewfinder Electronic (optional) None
Features
Slowest shutter speed 1s 30s
Maximum shutter speed 1/9000s 1/4000s
Continuous shooting rate 3.0 frames per second -
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Custom white balance
Image stabilization
Built-in flash
Flash range 9.60 m -
Flash options Auto, On, Off, Red-Eye, Slow Sync, Manual -
External flash
AEB
WB bracketing
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 480 (24 fps), 320 x 240 (24 fps) -
Max video resolution 1280x720 None
Video format Motion JPEG Motion JPEG
Microphone 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
Environment sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 370g (0.82 pounds) 270g (0.60 pounds)
Dimensions 120 x 70 x 45mm (4.7" x 2.8" x 1.8") 109 x 60 x 31mm (4.3" x 2.4" x 1.2")
DXO scores
DXO All around 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 330 images -
Battery style Battery Pack -
Battery model DB-90 -
Self timer Yes (5 sec, custom) Yes (10 sec)
Time lapse shooting
Type of storage SD/SDHC, Internal SD/MMC card
Card slots One One
Retail pricing $349 $0