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Ricoh GR Digital III vs Sigma DP3 Merrill

Portability
92
Imaging
34
Features
35
Overall
34
Ricoh GR Digital III front
 
Sigma DP3 Merrill front
Portability
83
Imaging
56
Features
33
Overall
46

Ricoh GR Digital III vs Sigma DP3 Merrill 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
  • Introduced July 2009
  • Later Model is Ricoh GR Digital IV
Sigma DP3 Merrill
(Full Review)
  • 15MP - APS-C Sensor
  • 3" Fixed Display
  • ISO 100 - 6400
  • 640 x 480 video
  • 75mm (F2.8) lens
  • 330g - 122 x 67 x 59mm
  • Revealed January 2013
  • Replaced the Sigma DP2 Merrill
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Ricoh GR Digital III vs Sigma DP3 Merrill Overview

Its time to look a little more in depth at the Ricoh GR Digital III vs Sigma DP3 Merrill, former is a Small Sensor Compact while the other is a Large Sensor Compact by competitors Ricoh and Sigma. There exists a considerable gap among the resolutions of the GR Digital III (10MP) and DP3 Merrill (15MP) and the GR Digital III (1/1.7") and DP3 Merrill (APS-C) provide totally different sensor dimensions.

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The GR Digital III was revealed 4 years before the DP3 Merrill which is a fairly large difference as far as camera technology is concerned. Both the cameras have different body design with the Ricoh GR Digital III being a Compact camera and the Sigma DP3 Merrill being a Large Sensor Compact camera.

Before diving straight to a complete comparison, here is a simple overview of how the GR Digital III scores against the DP3 Merrill in the way of portability, imaging, features and an overall mark.

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Reasons to pick Ricoh GR Digital III over the Sigma DP3 Merrill

 GR Digital III DP3 Merrill 

Reasons to pick Sigma DP3 Merrill over the Ricoh GR Digital III

 DP3 Merrill GR Digital III 
RevealedJanuary 2013July 2009Newer by 42 months

Common features in the Ricoh GR Digital III and Sigma DP3 Merrill

 GR Digital III DP3 Merrill 
Manual focus More precise focus
Display typeFixed Fixed Fixed display
Display dimensions3"3"Equal display sizing
Display resolution920k920kIdentical display resolution
Selfie screen Neither comes with selfie screen
Touch friendly display Neither comes with Touch friendly display

Ricoh GR Digital III vs Sigma DP3 Merrill Physical Comparison

If you're aiming to travel with your camera regularly, you need to factor in its weight and volume. The Ricoh GR Digital III comes with outside measurements of 109mm x 59mm x 26mm (4.3" x 2.3" x 1.0") with a weight of 208 grams (0.46 lbs) whilst the Sigma DP3 Merrill has sizing of 122mm x 67mm x 59mm (4.8" x 2.6" x 2.3") and a weight of 330 grams (0.73 lbs).

Look at the Ricoh GR Digital III vs Sigma DP3 Merrill in our completely new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Do not forget, the weight of an ILC will change based on the lens you are utilizing at that moment. Underneath is a front view over all size comparison of the GR Digital III compared to the DP3 Merrill.

Ricoh GR Digital III vs Sigma DP3 Merrill size comparison

Considering dimensions and weight, the portability grade of the GR Digital III and DP3 Merrill is 92 and 83 respectively.

Ricoh GR Digital III vs Sigma DP3 Merrill top view buttons comparison

Ricoh GR Digital III vs Sigma DP3 Merrill Sensor Comparison

Typically, it is very difficult to visualise the contrast in sensor dimensions purely by viewing specs. The pic underneath will help offer you a much better sense of the sensor sizing in the GR Digital III and DP3 Merrill.

As you can plainly see, both of the cameras have different megapixels and different sensor dimensions. The GR Digital III using its smaller sensor will make getting shallower depth of field more difficult and the Sigma DP3 Merrill will result in extra detail because of its extra 5 Megapixels. Greater resolution will also allow you to crop photos a bit more aggressively. The more aged GR Digital III will be disadvantaged in sensor technology.

Ricoh GR Digital III vs Sigma DP3 Merrill sensor size comparison

Ricoh GR Digital III vs Sigma DP3 Merrill Screen and ViewFinder

Ricoh GR Digital III vs Sigma DP3 Merrill Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Ricoh GR Digital III Portrait photography advice
Sigma DP3 Merrill Portrait photography advice
40
manual focus
saves RAW files
megapixel count low (10MP)
very small sensor size (1/1.7")
73
manual focus
decent MP (15MP)
sensor size is decent (APS-C)
saves RAW formats
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Street Comparison

Ricoh GR Digital III Street photography advice
Sigma DP3 Merrill Street photography advice
55
saves RAW files
screen is fixed
no image stabilization
very small sensor size (1/1.7")
65
sensor size is decent (APS-C)
saves RAW formats
no articulating screen
no image stabilization
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Sports Comparison

Ricoh GR Digital III Sports photography information
Sigma DP3 Merrill Sports photography information
17
focal length is fixed (28mm)
no image stabilization
megapixel count low (10MP)
very small sensor size (1/1.7")
lacks phase detect auto focus
44
decent MP (15 megapixels)
sensor size is decent (APS-C)
focal length is fixed (75mm)
max fps very slow (4.0 frames per second)
no image stabilization
has no phase detect AF
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Travel Comparison

Ricoh GR Digital III Travel photography highlights
Sigma DP3 Merrill Travel photography highlights
63
has built in flash
very good max aperture (f1.9)
megapixel count low (10MP)
doesn't have selfie friendly screen
54
decent MP (15MP)
no Timelapse function
doesn't contain selfie friendly screen
sluggish maximum aperture (f2.8)
Photography Glossary

Landscape Comparison

Ricoh GR Digital III as a Landscape photography camera
Sigma DP3 Merrill as a Landscape photography camera
45
manual focus
very good max aperture (f1.9)
screen size is decent (3")
saves RAW files
fixed lens (fixed lens mount)
focal length is fixed (28mm)
no image stabilization
megapixel count low (10 megapixels)
very small sensor size (1/1.7")
55
manual focus
screen size is decent (3 inches)
decent MP (15 megapixels)
sensor size is decent (APS-C)
saves RAW formats
lens is fixed (fixed lens mount)
focal length is fixed (75mm)
sluggish maximum aperture (f2.8)
no image stabilization
no Timelapse function
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Vlogging Comparison

Vlogging with Ricoh GR Digital III
Vlogging with Sigma DP3 Merrill
25
very good max aperture (f1.9)
doesn't have selfie friendly screen
no image stabilization
low res video (640 x 480 pixels)
doesn't have external mic port
22
sluggish maximum aperture (f2.8)
doesn't contain selfie friendly screen
no image stabilization
low res video (640 x 480 pixels)
no microphone port
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Ricoh GR Digital III vs Sigma DP3 Merrill Specifications

Detailed spec comparison table for Ricoh GR Digital III and Sigma DP3 Merrill
 Ricoh GR Digital IIISigma DP3 Merrill
General Information
Manufacturer Ricoh Sigma
Model type Ricoh GR Digital III Sigma DP3 Merrill
Type Small Sensor Compact Large Sensor Compact
Introduced 2009-07-27 2013-01-08
Body design Compact Large Sensor Compact
Sensor Information
Processor GR engine III Dual TRUE II engine
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 10MP 15MP
Anti alias filter
Aspect ratio 1:1, 4:3 and 3:2 -
Full resolution 3648 x 2736 4704 x 3136
Max native ISO 1600 6400
Lowest native ISO 64 100
RAW pictures
Autofocusing
Focus manually
AF touch
AF continuous
Single AF
AF tracking
AF selectice
AF center weighted
Multi area AF
Live view AF
Face detection AF
Contract detection AF
Phase detection AF
Cross type focus points - -
Lens
Lens support fixed lens fixed lens
Lens zoom range 28mm (1x) 75mm (1x)
Highest aperture f/1.9 f/2.8
Macro focusing range 1cm -
Focal length multiplier 4.8 1.5
Screen
Screen type Fixed Type Fixed Type
Screen diagonal 3" 3"
Resolution of screen 920 thousand dot 920 thousand dot
Selfie friendly
Liveview
Touch function
Viewfinder Information
Viewfinder type Optical (optional) None
Features
Slowest shutter speed 1s -
Maximum shutter speed 1/2000s -
Continuous shooting speed - 4.0fps
Shutter priority
Aperture priority
Manual exposure
Exposure compensation Yes Yes
Set WB
Image stabilization
Inbuilt flash
Flash distance 3.00 m no built-in flash
Flash modes Auto, On, Off, Red-Eye, Slow Sync, Manual no built-in flash
Hot shoe
Auto exposure bracketing
WB bracketing
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Video resolutions 640 x 480 (30, 15 fps), 320 x 240 (30, 15 fps) 640 x 480
Max video resolution 640x480 640x480
Video format - Motion JPEG
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
Environmental seal
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 208g (0.46 pounds) 330g (0.73 pounds)
Physical dimensions 109 x 59 x 26mm (4.3" x 2.3" x 1.0") 122 x 67 x 59mm (4.8" x 2.6" x 2.3")
DXO scores
DXO All around 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) -
Time lapse shooting
Type of storage SD/SDHC, Internal -
Storage slots One One
Cost at launch $399 $1,353