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Ricoh GR Digital III vs Sigma SD1

Portability
92
Imaging
34
Features
35
Overall
34
Ricoh GR Digital III front
 
Sigma SD1 front
Portability
77
Imaging
55
Features
43
Overall
50

Ricoh GR Digital III vs Sigma SD1 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
  • Launched July 2009
  • Later Model is Ricoh GR Digital IV
Sigma SD1
(Full Review)
  • 15MP - APS-C Sensor
  • 3" Fixed Display
  • ISO 0 - 0
  • No Video
  • Sigma SA Mount
  • n/ag - 146 x 113 x 80mm
  • Announced September 2010
  • Successor is Sigma SD1 Merrill
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Ricoh GR Digital III vs Sigma SD1 Overview

Here is a complete assessment of the Ricoh GR Digital III versus Sigma SD1, one being a Small Sensor Compact and the other is a Advanced DSLR by manufacturers Ricoh and Sigma. There exists a significant gap between the sensor resolutions of the GR Digital III (10MP) and SD1 (15MP) and the GR Digital III (1/1.7") and SD1 (APS-C) use different sensor size.

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The GR Digital III was unveiled 14 months prior to the SD1 making the cameras a generation apart from one another. The two cameras come with different body type with the Ricoh GR Digital III being a Compact camera and the Sigma SD1 being a Mid-size SLR camera.

Before we go straight into a complete comparison, below is a concise summary of how the GR Digital III scores vs the SD1 with respect to portability, imaging, features and an overall rating.

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Reasons to pick Ricoh GR Digital III over the Sigma SD1

 GR Digital III SD1 
Display resolution920k460kClearer display (+460k dot)

Reasons to pick Sigma SD1 over the Ricoh GR Digital III

 SD1 GR Digital III 
AnnouncedSeptember 2010July 2009Fresher by 14 months

Common features in the Ricoh GR Digital III and Sigma SD1

 GR Digital III SD1 
Focus manually Very precise focus
Display typeFixed Fixed Fixed display
Display dimension3"3"Identical display size
Selfie screen Missing selfie screen
Touch friendly display Neither offers Touch friendly display

Ricoh GR Digital III vs Sigma SD1 Physical Comparison

When you are aiming to carry your camera frequently, you need to factor in its weight and dimensions. The Ricoh GR Digital III offers external dimensions of 109mm x 59mm x 26mm (4.3" x 2.3" x 1.0") accompanied by a weight of 208 grams (0.46 lbs) and the Sigma SD1 has dimensions of 146mm x 113mm x 80mm (5.7" x 4.4" x 3.1") and a weight of n/a grams (0.00 lbs).

Analyze the Ricoh GR Digital III versus Sigma SD1 in the new Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember that, the weight of an Interchangeable Lens Camera will differ dependant on the lens you are employing at that time. The following is the front view physical size comparison of the GR Digital III against the SD1.

Ricoh GR Digital III vs Sigma SD1 size comparison

Looking at dimensions and weight, the portability grade of the GR Digital III and SD1 is 92 and 77 respectively.

Ricoh GR Digital III vs Sigma SD1 top view buttons comparison

Ricoh GR Digital III vs Sigma SD1 Sensor Comparison

More often than not, it is very tough to imagine the gap between sensor sizing just by reading through specs. The visual here will provide you a far better sense of the sensor sizes in the GR Digital III and SD1.

As you can plainly see, both of these cameras posses different resolutions and different sensor sizing. The GR Digital III having a tinier sensor is going to make achieving bokeh harder and the Sigma SD1 will give extra detail having an extra 5MP. Greater resolution can also let you crop photos somewhat more aggressively. The older GR Digital III is going to be behind when it comes to sensor technology.

Ricoh GR Digital III vs Sigma SD1 sensor size comparison

Ricoh GR Digital III vs Sigma SD1 Screen and ViewFinder

Ricoh GR Digital III vs Sigma SD1 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Ricoh GR Digital III Portrait photography highlights
Sigma SD1 Portrait photography highlights
40
has manual focus
saves RAW formats
MP count low (10MP)
very small sensor size (1/1.7")
65
has manual focus
decent sensor resolution (15MP)
decent sensor size (APS-C)
delivers RAW formats
no liveview
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Street Comparison

Street photography with Ricoh GR Digital III
Street photography with Sigma SD1
55
saves RAW formats
fixed screen
no image stabilization
very small sensor size (1/1.7")
62
decent sensor size (APS-C)
delivers RAW formats
weather sealing
fixed screen
lack of image stabilization
low max ISO (0)
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Sports Comparison

Ricoh GR Digital III Sports photography details
Sigma SD1 Sports photography details
17
focal length is fixed (28mm)
no image stabilization
MP count low (10MP)
very small sensor size (1/1.7")
does not have phase detect AF
56
decent sensor resolution (15 megapixels)
decent sensor size (APS-C)
weather sealing
sensor has phase detect autofocus
no liveview
max frames per second very slow (5.0 frames/s)
lack of image stabilization
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Travel Comparison

Ricoh GR Digital III Travel photography advice
Sigma SD1 Travel photography advice
63
built-in flash
good maximum aperture (f1.9)
MP count low (10MP)
display is not selfie friendly
65
weather sealing
decent sensor resolution (15 megapixels)
flash built-in
no Timelapse function
does not contain selfie friendly screen
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Landscape Comparison

Ricoh GR Digital III as a Landscape photography camera
Sigma SD1 as a Landscape photography camera
45
has manual focus
good maximum aperture (f1.9)
screen is a good size (3 inches)
saves RAW formats
can't swap lens (fixed lens mount)
focal length is fixed (28mm)
no image stabilization
MP count low (10MP)
very small sensor size (1/1.7")
61
has manual focus
change lenses (Sigma SA mount)
nice screen size (3 inch)
decent sensor resolution (15MP)
decent sensor size (APS-C)
delivers RAW formats
weather sealing
no liveview
lack of image stabilization
low max ISO (0)
no Timelapse function
Photography Glossary

Vlogging Comparison

Vlogging with Ricoh GR Digital III
Vlogging with Sigma SD1
25
good maximum aperture (f1.9)
display is not selfie friendly
no image stabilization
video resolution low (640 x 480 pixels)
missing external microphone jack
9
no video
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Ricoh GR Digital III vs Sigma SD1 Specifications

Detailed spec comparison table for Ricoh GR Digital III and Sigma SD1
 Ricoh GR Digital IIISigma SD1
General Information
Manufacturer Ricoh Sigma
Model type Ricoh GR Digital III Sigma SD1
Type Small Sensor Compact Advanced DSLR
Launched 2009-07-27 2010-09-21
Body design Compact Mid-size SLR
Sensor Information
Processor Chip GR engine III Dual True II
Sensor type CCD CMOS (Foveon X3)
Sensor size 1/1.7" APS-C
Sensor measurements 7.44 x 5.58mm 24 x 16mm
Sensor surface area 41.5mm² 384.0mm²
Sensor resolution 10 megapixel 15 megapixel
Anti alias filter
Aspect ratio 1:1, 4:3 and 3:2 -
Max resolution 3648 x 2736 4800 x 3200
Max native ISO 1600 -
Lowest native ISO 64 -
RAW photos
Autofocusing
Focus manually
Touch to focus
Continuous AF
Single AF
Tracking AF
AF selectice
Center weighted AF
AF multi area
Live view AF
Face detection AF
Contract detection AF
Phase detection AF
Total focus points - 11
Cross type focus points - 2
Lens
Lens support fixed lens Sigma SA
Lens zoom range 28mm (1x) -
Largest aperture f/1.9 -
Macro focusing distance 1cm -
Total lenses - 76
Crop factor 4.8 1.5
Screen
Screen type Fixed Type Fixed Type
Screen diagonal 3" 3"
Screen resolution 920k dot 460k dot
Selfie friendly
Liveview
Touch function
Viewfinder Information
Viewfinder type Optical (optional) Optical (pentaprism)
Viewfinder coverage - 96 percent
Viewfinder magnification - 0.64x
Features
Minimum shutter speed 1 secs 15 secs
Fastest shutter speed 1/2000 secs 1/2000 secs
Continuous shutter speed - 5.0 frames/s
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Set WB
Image stabilization
Inbuilt flash
Flash distance 3.00 m -
Flash modes Auto, On, Off, Red-Eye, Slow Sync, Manual -
External flash
Auto exposure bracketing
White balance bracketing
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Video resolutions 640 x 480 (30, 15 fps), 320 x 240 (30, 15 fps) -
Max video resolution 640x480 None
Microphone jack
Headphone jack
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 seal
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 208 gr (0.46 lb) -
Dimensions 109 x 59 x 26mm (4.3" x 2.3" x 1.0") 146 x 113 x 80mm (5.7" x 4.4" x 3.1")
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
Self timer Yes (2 or 10 sec) Yes
Time lapse shooting
Type of storage SD/SDHC, Internal Compact Flash (Type I, UDMA compatible)
Storage slots 1 1
Pricing at release $399 $2,339