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Ricoh GR Digital III vs Sigma SD15

Portability
92
Imaging
34
Features
35
Overall
34
Ricoh GR Digital III front
 
Sigma SD15 front
Portability
59
Imaging
44
Features
45
Overall
44

Ricoh GR Digital III vs Sigma SD15 Key Specs

Ricoh GR Digital III
(Full Review)
  • 10MP - 1/1.7" Sensor
  • 3" Fixed Screen
  • ISO 64 - 1600
  • 640 x 480 video
  • 28mm (F1.9) lens
  • 208g - 109 x 59 x 26mm
  • Released July 2009
  • Newer Model is Ricoh GR Digital IV
Sigma SD15
(Full Review)
  • 5MP - APS-C Sensor
  • 3" Fixed Display
  • ISO 100 - 1600 (Raise to 3200)
  • No Video
  • Sigma SA Mount
  • 750g - 144 x 107 x 81mm
  • Revealed February 2010
  • Succeeded the Sigma SD14
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Ricoh GR Digital III vs Sigma SD15 Overview

Let's take a more detailed look at the Ricoh GR Digital III vs Sigma SD15, one is a Small Sensor Compact and the other is a Advanced DSLR by manufacturers Ricoh and Sigma. There is a significant difference between the image resolutions of the GR Digital III (10MP) and SD15 (5MP) and the GR Digital III (1/1.7") and SD15 (APS-C) feature different sensor measurements.

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The GR Digital III was released 6 months earlier than the SD15 and they are of a similar generation. Each of the cameras offer different body type with the Ricoh GR Digital III being a Compact camera and the Sigma SD15 being a Mid-size SLR camera.

Before getting through a complete comparison, below is a short highlight of how the GR Digital III grades vs the SD15 in relation to portability, imaging, features and an overall score.

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Reasons to pick Ricoh GR Digital III over the Sigma SD15

 GR Digital III SD15 
Display resolution920k460kClearer display (+460k dot)

Reasons to pick Sigma SD15 over the Ricoh GR Digital III

 SD15 GR Digital III 

Common features in the Ricoh GR Digital III and Sigma SD15

 GR Digital III SD15 
RevealedJuly 2009February 2010Similar generation
Manually focus Very exact focusing
Display typeFixed Fixed Fixed display
Display sizing3"3"Equivalent display measurements
Selfie screen No selfie screen
Touch friendly display No Touch friendly display

Ricoh GR Digital III vs Sigma SD15 Physical Comparison

For anyone who is planning to carry around your camera, you're going to have to factor in its weight and proportions. The Ricoh GR Digital III provides external measurements of 109mm x 59mm x 26mm (4.3" x 2.3" x 1.0") and a weight of 208 grams (0.46 lbs) while the Sigma SD15 has measurements of 144mm x 107mm x 81mm (5.7" x 4.2" x 3.2") along with a weight of 750 grams (1.65 lbs).

Look at the Ricoh GR Digital III vs Sigma SD15 in the all new Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember, the weight of an Interchangeable Lens Camera will vary based on the lens you are employing during that time. The following is the front view measurements comparison of the GR Digital III compared to the SD15.

Ricoh GR Digital III vs Sigma SD15 size comparison

Considering size and weight, the portability score of the GR Digital III and SD15 is 92 and 59 respectively.

Ricoh GR Digital III vs Sigma SD15 top view buttons comparison

Ricoh GR Digital III vs Sigma SD15 Sensor Comparison

Often, its tough to picture the contrast between sensor sizes merely by reviewing specs. The picture here may provide you a much better sense of the sensor measurements in the GR Digital III and SD15.

As you can plainly see, each of these cameras enjoy different megapixels and different sensor sizes. The GR Digital III because of its tinier sensor is going to make achieving bokeh tougher and the Ricoh GR Digital III will offer you extra detail as a result of its extra 5 Megapixels. Greater resolution can also help you crop images far more aggressively.

Ricoh GR Digital III vs Sigma SD15 sensor size comparison

Ricoh GR Digital III vs Sigma SD15 Screen and ViewFinder

Ricoh GR Digital III vs Sigma SD15 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Ricoh GR Digital III Portrait photography advice
Sigma SD15 Portrait photography advice
40
you can focus manually
supports RAW files
MP count low (10MP)
sensor is small (1/1.7")
50
focusing manually
nice sensor size (APS-C)
saves RAW files
does not have liveview
megapixel count low (5 megapixels)
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Street Comparison

Street photography with Ricoh GR Digital III
Street photography with Sigma SD15
55
supports RAW files
fixed screen
no image stabilization
sensor is small (1/1.7")
52
nice sensor size (APS-C)
saves RAW files
screen does not articulate
no image stabilization
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Sports Comparison

Ricoh GR Digital III Sports photography information
Sigma SD15 Sports photography information
17
fixed focal length (28mm)
no image stabilization
MP count low (10 megapixels)
sensor is small (1/1.7")
has no phase detect AF
38
nice sensor size (APS-C)
has phase detect autofocus
does not have liveview
low fps (3.0 frames per second)
no image stabilization
megapixel count low (5MP)
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Travel Comparison

Ricoh GR Digital III Travel photography factors
Sigma SD15 Travel photography factors
63
flash built-in
great max aperture (f1.9)
MP count low (10MP)
does not offer selfie friendly screen
42
has built in flash
no Time Lapse function
megapixel count low (5MP)
doesn't posses selfie friendly screen
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Landscape Comparison

Ricoh GR Digital III as a Landscape photography camera
Sigma SD15 as a Landscape photography camera
45
you can focus manually
great max aperture (f1.9)
screen size is good (3")
supports RAW files
fixed lens (fixed lens mount)
fixed focal length (28mm)
no image stabilization
MP count low (10 megapixels)
sensor is small (1/1.7")
51
focusing manually
change lenses (Sigma SA mount)
nice screen size (3")
nice sensor size (APS-C)
saves RAW files
does not have liveview
no image stabilization
megapixel count low (5MP)
no Time Lapse function
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Vlogging Comparison

Vlogging with Ricoh GR Digital III
Vlogging with Sigma SD15
25
great max aperture (f1.9)
does not offer selfie friendly screen
no image stabilization
low res video (640 x 480 resolution)
missing external mic support
9
lack of video recording
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Ricoh GR Digital III vs Sigma SD15 Specifications

Detailed spec comparison table for Ricoh GR Digital III and Sigma SD15
 Ricoh GR Digital IIISigma SD15
General Information
Brand Name Ricoh Sigma
Model Ricoh GR Digital III Sigma SD15
Category Small Sensor Compact Advanced DSLR
Released 2009-07-27 2010-02-20
Physical type Compact Mid-size SLR
Sensor Information
Powered by GR engine III True II
Sensor type CCD CMOS (Foveon X3)
Sensor size 1/1.7" APS-C
Sensor dimensions 7.44 x 5.58mm 20.7 x 13.8mm
Sensor area 41.5mm² 285.7mm²
Sensor resolution 10MP 5MP
Anti aliasing filter
Aspect ratio 1:1, 4:3 and 3:2 3:2
Maximum resolution 3648 x 2736 2640 x 1760
Maximum native ISO 1600 1600
Maximum boosted ISO - 3200
Minimum native ISO 64 100
RAW format
Minimum boosted ISO - 50
Autofocusing
Manual focus
Touch focus
AF continuous
AF single
Tracking AF
Selective AF
Center weighted AF
Multi area AF
AF live view
Face detection focusing
Contract detection focusing
Phase detection focusing
Lens
Lens mounting type fixed lens Sigma SA
Lens focal range 28mm (1x) -
Max aperture f/1.9 -
Macro focus range 1cm -
Number of lenses - 76
Crop factor 4.8 1.7
Screen
Type of screen Fixed Type Fixed Type
Screen diagonal 3 inch 3 inch
Resolution of screen 920 thousand dots 460 thousand dots
Selfie friendly
Liveview
Touch capability
Viewfinder Information
Viewfinder Optical (optional) Optical (pentaprism)
Viewfinder coverage - 96%
Viewfinder magnification - 0.6x
Features
Slowest shutter speed 1 secs 30 secs
Maximum shutter speed 1/2000 secs 1/4000 secs
Continuous shooting rate - 3.0fps
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Change WB
Image stabilization
Integrated flash
Flash range 3.00 m -
Flash options Auto, On, Off, Red-Eye, Slow Sync, Manual -
Hot shoe
AE bracketing
WB bracketing
Maximum flash synchronize - 1/180 secs
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Supported video resolutions 640 x 480 (30, 15 fps), 320 x 240 (30, 15 fps) -
Maximum video resolution 640x480 None
Mic 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
Environment sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 208g (0.46 lb) 750g (1.65 lb)
Dimensions 109 x 59 x 26mm (4.3" x 2.3" x 1.0") 144 x 107 x 81mm (5.7" x 4.2" x 3.2")
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
Self timer Yes (2 or 10 sec) Yes (10 sec)
Time lapse feature
Storage type SD/SDHC, Internal SD/SDHC card
Card slots 1 1
Launch price $399 $1,500