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Ricoh GR Digital IV vs Sigma SD15

Portability
92
Imaging
35
Features
47
Overall
39
Ricoh GR Digital IV front
 
Sigma SD15 front
Portability
59
Imaging
44
Features
45
Overall
44

Ricoh GR Digital IV vs Sigma SD15 Key Specs

Ricoh GR Digital IV
(Full Review)
  • 10MP - 1/1.7" Sensor
  • 3" Fixed Screen
  • ISO 80 - 3200
  • Sensor-shift Image Stabilization
  • 640 x 480 video
  • 28mm (F1.9) lens
  • 190g - 109 x 59 x 33mm
  • Revealed September 2011
  • Old Model is Ricoh GR Digital III
Sigma SD15
(Full Review)
  • 5MP - APS-C Sensor
  • 3" Fixed Screen
  • ISO 100 - 1600 (Boost to 3200)
  • No Video
  • Sigma SA Mount
  • 750g - 144 x 107 x 81mm
  • Released February 2010
  • Superseded the Sigma SD14
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Ricoh GR Digital IV vs Sigma SD15 Overview

Let's look a bit more in depth at the Ricoh GR Digital IV versus Sigma SD15, former being a Small Sensor Compact while the latter is a Advanced DSLR by companies Ricoh and Sigma. There exists a substantial gap among the resolutions of the GR Digital IV (10MP) and SD15 (5MP) and the GR Digital IV (1/1.7") and SD15 (APS-C) provide totally different sensor measurements.

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The GR Digital IV was manufactured 20 months later than the SD15 which makes them a generation apart from one another. Both the cameras have different body design with the Ricoh GR Digital IV being a Compact camera and the Sigma SD15 being a Mid-size SLR camera.

Before delving into a thorough comparison, here is a brief introduction of how the GR Digital IV matches up versus the SD15 in the way of portability, imaging, features and an overall rating.

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Reasons to pick Ricoh GR Digital IV over the Sigma SD15

 GR Digital IV SD15 
ReleasedSeptember 2011February 2010Fresher by 20 months
Screen resolution1230k460kClearer screen (+770k dot)

Reasons to pick Sigma SD15 over the Ricoh GR Digital IV

 SD15 GR Digital IV 

Common features in the Ricoh GR Digital IV and Sigma SD15

 GR Digital IV SD15 
Manually focus Very accurate focusing
Screen typeFixed Fixed Fixed screen
Screen dimensions3"3"Equal screen measurements
Selfie screen Neither features selfie screen
Touch friendly screen Neither features Touch friendly screen

Ricoh GR Digital IV vs Sigma SD15 Physical Comparison

When you are going to carry your camera, you're going to have to consider its weight and measurements. The Ricoh GR Digital IV enjoys external measurements of 109mm x 59mm x 33mm (4.3" x 2.3" x 1.3") accompanied by a weight of 190 grams (0.42 lbs) and the Sigma SD15 has proportions of 144mm x 107mm x 81mm (5.7" x 4.2" x 3.2") along with a weight of 750 grams (1.65 lbs).

Check out the Ricoh GR Digital IV versus Sigma SD15 in our completely new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Keep in mind, the weight of an ILC will change based on the lens you choose at the time. The following is a front view scale comparison of the GR Digital IV against the SD15.

Ricoh GR Digital IV vs Sigma SD15 size comparison

Using dimensions and weight, the portability rating of the GR Digital IV and SD15 is 92 and 59 respectively.

Ricoh GR Digital IV vs Sigma SD15 top view buttons comparison

Ricoh GR Digital IV vs Sigma SD15 Sensor Comparison

Typically, its tough to envision the difference in sensor sizing purely by seeing specs. The photograph here will help give you a clearer sense of the sensor measurements in the GR Digital IV and SD15.

As you can plainly see, both of those cameras provide different megapixels and different sensor sizing. The GR Digital IV featuring a smaller sensor will make achieving shallower DOF more challenging and the Ricoh GR Digital IV will provide extra detail due to its extra 5 Megapixels. Higher resolution will also let you crop pictures more aggressively. The younger GR Digital IV is going to have a benefit when it comes to sensor tech.

Ricoh GR Digital IV vs Sigma SD15 sensor size comparison

Ricoh GR Digital IV vs Sigma SD15 Screen and ViewFinder

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

Portrait Comparison

Ricoh GR Digital IV as a Portrait photography camera
Sigma SD15 as a Portrait photography camera
41
manual focus
supports RAW formats
megapixel count low (10 megapixels)
sensor is very small (1/1.7")
50
you can focus manually
good sensor size (APS-C)
saves RAW files
no liveview
sensor resolution low (5MP)
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Street Comparison

Street photography with Ricoh GR Digital IV
Street photography with Sigma SD15
65
image stabilization (Sensor-shift)
supports RAW formats
screen does not articulate
sensor is very small (1/1.7")
52
good sensor size (APS-C)
saves RAW files
no moving screen
does not have image stabilization
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Sports Comparison

Ricoh GR Digital IV Sports photography information
Sigma SD15 Sports photography information
34
image stabilization (Sensor-shift)
great battery pack (390 per charge)
fixed focal length (28mm)
megapixel count low (10MP)
sensor is very small (1/1.7")
does not have phase detect AF
38
good sensor size (APS-C)
supports phase detect AF
no liveview
slow frames per second (3.0 fps)
does not have image stabilization
sensor resolution low (5MP)
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Travel Comparison

Ricoh GR Digital IV Travel photography details
Sigma SD15 Travel photography details
67
great battery pack (390 shots)
flash built-in
fast max aperture (f1.9)
megapixel count low (10MP)
does not have a selfie friendly display
42
has built in flash
lack of Timelapse mode
sensor resolution low (5 megapixels)
screen isn't selfie friendly
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Landscape Comparison

Ricoh GR Digital IV Landscape photography highlights
Sigma SD15 Landscape photography highlights
53
manual focus
fast max aperture (f1.9)
pretty good screen size (3")
image stabilization (Sensor-shift)
supports RAW formats
great battery pack (390 CIPA)
fixed lens (fixed lens mount)
fixed focal length (28mm)
megapixel count low (10 megapixels)
sensor is very small (1/1.7")
51
you can focus manually
swap lenses (Sigma SA mount)
screen size is decent (3 inches)
good sensor size (APS-C)
saves RAW files
no liveview
does not have image stabilization
sensor resolution low (5 megapixels)
lack of Timelapse mode
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Vlogging Comparison

Ricoh GR Digital IV Vlogging highlights
Sigma SD15 Vlogging highlights
29
fast max aperture (f1.9)
image stabilization (Sensor-shift)
does not have a selfie friendly display
video res low (640 x 480 resolution)
lack of microphone socket
9
no video recording
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Ricoh GR Digital IV vs Sigma SD15 Specifications

Detailed spec comparison table for Ricoh GR Digital IV and Sigma SD15
 Ricoh GR Digital IVSigma SD15
General Information
Manufacturer Ricoh Sigma
Model Ricoh GR Digital IV Sigma SD15
Type Small Sensor Compact Advanced DSLR
Revealed 2011-09-15 2010-02-20
Physical type Compact Mid-size SLR
Sensor Information
Processor - True II
Sensor type CCD CMOS (Foveon X3)
Sensor size 1/1.7" APS-C
Sensor measurements 7.44 x 5.58mm 20.7 x 13.8mm
Sensor surface 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 3200 1600
Maximum boosted ISO - 3200
Min native ISO 80 100
RAW pictures
Min boosted ISO - 50
Autofocusing
Focus manually
Touch focus
Autofocus continuous
Single autofocus
Autofocus tracking
Autofocus selectice
Center weighted autofocus
Multi area autofocus
Live view autofocus
Face detection autofocus
Contract detection autofocus
Phase detection autofocus
Lens
Lens mounting type fixed lens Sigma SA
Lens focal range 28mm (1x) -
Maximal aperture f/1.9 -
Macro focus range 1cm -
Available lenses - 76
Crop factor 4.8 1.7
Screen
Type of screen Fixed Type Fixed Type
Screen diagonal 3" 3"
Resolution of screen 1,230k dots 460k dots
Selfie friendly
Liveview
Touch screen
Viewfinder Information
Viewfinder Optical (optional) Optical (pentaprism)
Viewfinder coverage - 96 percent
Viewfinder magnification - 0.6x
Features
Slowest shutter speed 1 seconds 30 seconds
Maximum shutter speed 1/2000 seconds 1/4000 seconds
Continuous shooting rate - 3.0 frames per sec
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Change white balance
Image stabilization
Integrated flash
Flash range 3.00 m -
Flash modes Auto, On, Off, Red-Eye, Slow Sync, Manual -
Hot shoe
AEB
White balance bracketing
Maximum flash synchronize - 1/180 seconds
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Supported video resolutions 640 x 480 (30, 15 fps), 320 x 240 (30, 15 fps) -
Maximum video resolution 640x480 None
Video data format Motion JPEG -
Microphone port
Headphone port
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 190 grams (0.42 pounds) 750 grams (1.65 pounds)
Physical dimensions 109 x 59 x 33mm (4.3" x 2.3" x 1.3") 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
Battery life 390 photographs -
Form of battery Battery Pack -
Battery model DB65 -
Self timer Yes (2 or 10 sec) Yes (10 sec)
Time lapse recording
Storage type SD/SDHC, Internal SD/SDHC card
Card slots 1 1
Price at launch $599 $1,500