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Sigma SD15 vs Sony A7S III

Portability
59
Imaging
44
Features
45
Overall
44
Sigma SD15 front
 
Sony Alpha A7S III front
Portability
61
Imaging
65
Features
92
Overall
75

Sigma SD15 vs Sony A7S III Key Specs

Sigma SD15
(Full Review)
  • 5MP - APS-C Sensor
  • 3" Fixed Display
  • ISO 100 - 1600 (Boost to 3200)
  • No Video
  • Sigma SA Mount
  • 750g - 144 x 107 x 81mm
  • Released February 2010
  • Earlier Model is Sigma SD14
Sony A7S III
(Full Review)
  • 12MP - Full frame Sensor
  • 3" Fully Articulated Screen
  • ISO 80 - 102400 (Raise to 409600)
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Max Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 699g - 129 x 97 x 81mm
  • Released July 2020
  • Previous Model is Sony A7S II
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Sigma SD15 vs Sony A7S III Overview

The following is a extended overview of the Sigma SD15 versus Sony A7S III, one is a Advanced DSLR and the latter is a Pro Mirrorless by brands Sigma and Sony. There exists a big gap among the image resolutions of the SD15 (5MP) and A7S III (12MP) and the SD15 (APS-C) and A7S III (Full frame) enjoy totally different sensor measurements.

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The SD15 was launched 11 years prior to the A7S III which is a fairly big gap as far as camera technology is concerned. Both cameras come with different body type with the Sigma SD15 being a Mid-size SLR camera and the Sony A7S III being a SLR-style mirrorless camera.

Before we go in to a step-by-step comparison, below is a brief summation of how the SD15 matches up versus the A7S III when considering portability, imaging, features and an overall mark.

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Reasons to pick Sigma SD15 over the Sony A7S III

 SD15 A7S III 

Reasons to pick Sony A7S III over the Sigma SD15

 A7S III SD15 
ReleasedJuly 2020February 2010Newer by 126 months
Screen typeFully articulatedFixed Fully Articulating screen
Screen resolution1440k460kSharper screen (+980k dot)
Selfie screen Easy selfies
Touch friendly screen Quickly navigate

Common features in the Sigma SD15 and Sony A7S III

 SD15 A7S III 
Focus manually More accurate focusing
Screen dimension3"3"Identical screen measurements

Sigma SD15 vs Sony A7S III Physical Comparison

In case you're intending to travel with your camera regularly, you'll need to think about its weight and volume. The Sigma SD15 enjoys external 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) while the Sony A7S III has sizing of 129mm x 97mm x 81mm (5.1" x 3.8" x 3.2") having a weight of 699 grams (1.54 lbs).

Take a look at the Sigma SD15 versus Sony A7S III in the new Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into consideration, the weight of an Interchangeable Lens Camera will differ depending on the lens you are utilising at that moment. Below is the front view dimension comparison of the SD15 compared to the A7S III.

Sigma SD15 vs Sony A7S III size comparison

Taking into account dimensions and weight, the portability rating of the SD15 and A7S III is 59 and 61 respectively.

Sigma SD15 vs Sony A7S III top view buttons comparison

Sigma SD15 vs Sony A7S III Sensor Comparison

Typically, its hard to see the gap in sensor dimensions just by looking through specs. The picture underneath should offer you a stronger sense of the sensor sizing in the SD15 and A7S III.

All in all, both of the cameras have got different megapixels and different sensor dimensions. The SD15 due to its smaller sensor will make getting bokeh harder and the Sony A7S III will result in extra detail utilizing its extra 7MP. Higher resolution will also allow you to crop shots much more aggressively. The more aged SD15 will be disadvantaged with regard to sensor technology.

Sigma SD15 vs Sony A7S III sensor size comparison

Sigma SD15 vs Sony A7S III Screen and ViewFinder

Sigma SD15 vs Sony A7S III Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Sigma SD15 Portrait photography factors
Sony A7S III Portrait photography factors
50
manual focus
sensor size is nice (APS-C)
supports RAW files
no liveview feature
low MP (5MP)
71
focusing manually
great sensor size (Full frame)
offers face detect focus
exports RAW formats
low resolution (12MP)
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Street Comparison

Sigma SD15 Street photography features
Sony A7S III Street photography features
52
sensor size is nice (APS-C)
supports RAW files
no articulating screen
no image stabilization
76
has image stabilization (Sensor based 5-axis)
great sensor size (Full frame)
exports RAW formats
supports touch focus
weather sealing
great high ISO (102,400)
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Sports Comparison

Sigma SD15 Sports photography details
Sony A7S III Sports photography details
38
sensor size is nice (APS-C)
sensor has phase detect auto focus
no liveview feature
low frames per second (3.0 frames/s)
no image stabilization
low MP (5 megapixels)
76
great max shutter speed (1/8,000s)
has image stabilization (Sensor based 5-axis)
great sensor size (Full frame)
offers tracking focus
weather sealing
great battery power (600 CIPA)
supports phase detect auto focus
low resolution (12MP)
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Travel Comparison

Sigma SD15 as a Travel photography camera
Sony A7S III as a Travel photography camera
42
flash built-in
doesn't have Timelapse recording
low MP (5MP)
display isn't selfie friendly
70
great battery power (600 per charge)
weather sealing
supports bluetooth
supports touch focus
selfie friendly screen
low resolution (12 megapixels)
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Landscape Comparison

Landscape photography with Sigma SD15
Landscape photography with Sony A7S III
51
manual focus
switch lenses (Sigma SA mount)
pretty good screen size (3 inch)
sensor size is nice (APS-C)
supports RAW files
no liveview feature
no image stabilization
low MP (5 megapixels)
doesn't have Timelapse recording
77
focusing manually
switch lenses (Sony E mount)
screen size is good (3 inch)
has image stabilization (Sensor based 5-axis)
great sensor size (Full frame)
great high ISO (102,400)
exports RAW formats
weather sealing
great battery power (600 shots)
2 card slots
low resolution (12 megapixels)
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Vlogging Comparison

Sigma SD15 Vlogging highlights
Sony A7S III Vlogging highlights
9
no video
77
selfie friendly screen
has touchscreen
has image stabilization (Sensor based 5-axis)
offers face detect focus
video res high (3840 x 2160 pixels)
comes with microphone support
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Sigma SD15 vs Sony A7S III Specifications

Detailed spec comparison table for Sigma SD15 and Sony A7S III
 Sigma SD15Sony Alpha A7S III
General Information
Brand Name Sigma Sony
Model type Sigma SD15 Sony Alpha A7S III
Category Advanced DSLR Pro Mirrorless
Released 2010-02-20 2020-07-21
Physical type Mid-size SLR SLR-style mirrorless
Sensor Information
Processor True II Bionz XR
Sensor type CMOS (Foveon X3) BSI-CMOS
Sensor size APS-C Full frame
Sensor measurements 20.7 x 13.8mm 35.6 x 23.8mm
Sensor area 285.7mm² 847.3mm²
Sensor resolution 5MP 12MP
Anti alias filter
Aspect ratio 3:2 3:2 and 16:9
Highest resolution 2640 x 1760 4240 x 2832
Highest native ISO 1600 102400
Highest boosted ISO 3200 409600
Minimum native ISO 100 80
RAW files
Minimum boosted ISO 50 50
Autofocusing
Focus manually
Touch focus
Continuous autofocus
Single autofocus
Tracking autofocus
Selective autofocus
Center weighted autofocus
Autofocus multi area
Autofocus live view
Face detect autofocus
Contract detect autofocus
Phase detect autofocus
Total focus points - 759
Lens
Lens mount type Sigma SA Sony E
Available lenses 76 121
Crop factor 1.7 1
Screen
Display type Fixed Type Fully articulated
Display diagonal 3 inch 3 inch
Display resolution 460k dots 1,440k dots
Selfie friendly
Liveview
Touch functionality
Viewfinder Information
Viewfinder Optical (pentaprism) Electronic
Viewfinder resolution - 9,440k dots
Viewfinder coverage 96 percent 100 percent
Viewfinder magnification 0.6x 0.91x
Features
Lowest shutter speed 30 seconds 30 seconds
Highest shutter speed 1/4000 seconds 1/8000 seconds
Continuous shooting rate 3.0fps 10.0fps
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Change white balance
Image stabilization
Built-in flash
Flash distance - no built-in flash
Flash settings - no built-in flash
Hot shoe
Auto exposure bracketing
WB bracketing
Highest flash synchronize 1/180 seconds -
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Video resolutions - 3840 x 2160 @ 120p / 280 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 100p / 280 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 60p / 200 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 50p / 200 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 30p / 140 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 25p / 140 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 24p / 100 Mbps, XAVC S, MP4, H.265, Linear PCM 1920 x 1080 @ 120p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 100p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 60p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 50p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 25p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 24p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM
Highest video resolution None 3840x2160
Video data format - MPEG-4, XAVC S, XAVC HS, XAVC S-1, H.264, H.265
Microphone support
Headphone support
Connectivity
Wireless None Built-In
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 3.2 Gen 1 (5 GBit/sec)
GPS None None
Physical
Environment sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 750 gr (1.65 lbs) 699 gr (1.54 lbs)
Dimensions 144 x 107 x 81mm (5.7" x 4.2" x 3.2") 129 x 97 x 81mm (5.1" x 3.8" x 3.2")
DXO scores
DXO All around rating not tested 85
DXO Color Depth rating not tested 23.6
DXO Dynamic range rating not tested 13.3
DXO Low light rating not tested 2993
Other
Battery life - 600 images
Battery style - Battery Pack
Battery ID - NP-FZ100
Self timer Yes (10 sec) Yes (2 or 10 sec; continuous (3 or 5 exposures))
Time lapse recording With downloadable app
Type of storage SD/SDHC card Dual SD/CFexpress Type A slots
Card slots One Two
Retail price $1,500 $3,499