Size and weight is a big decision factor when you are trying to find the ideal camera for your needs.
In this section, We are going to illustrate Sony A7R III and Sigma Quattro side-by-side from the front, back and top in their relative dimensions. Sony A7R III has external dimensions of 127 x 96 x 74 mm (5 x 3.78 x 2.91″) and weighs 657 g (1.45 lb / 23.17 oz) (including batteries). Sigma Quattro has external dimensions of 147 x 95 x 91 mm (5.79 x 3.74 x 3.58″) and weighs 625 g (1.38 lb / 22.05 oz) (including batteries).
Below you can see the front view size comparison of Sony A7R III and Sigma Quattro. Sony A7R III is 20mm narrower and 17mm thinner than Sigma Quattro but it is also 1mm taller.
![Sony A7R III vs Sigma Quattro Camera Size Comparison - Front View]()
Comparison image of Sony A7R III and Sigma Quattro Size, Weight and External Dimensions - Front View
Here is the back view size comparison of Sony A7R III and Sigma Quattro.
![Sony A7R III vs Sigma Quattro Camera Size Comparison - Back View]()
Comparison image of Sony A7R III and Sigma Quattro Size and Weight - Back View
Now lets look at the top view comparison of Sony A7R III and Sigma Quattro.
![Sony A7R III vs Sigma Quattro Camera Size Comparison - Top View]()
Top View Comparison image of Sony A7R III and Sigma Quattro Size
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Sigma Quattro is 32g lighter than the Sony A7R III but we don't think this will make a significant difference.
Also keep in mind that body weight is not the only deciding factor when comparing two interchangeable camera bodies, you have to also take into account the lenses that you will be using with these bodies. Since Sony A7R III has a Full frame sensor and Sigma Quattro has a smaller APS-C sensor, Sigma Quattro's lenses for a similar focal length and aperture will generally be lighter and smaller than the Sony A7R III lenses.
Weight Comparison
Mirrorless Cameras
Thickness Comparison
Mirrorless Cameras
Weather Sealing
Both A7R III and Quattro have weather sealings in their body, making them resistant to water and dust.
LCD Screen Size and Features
Sony A7R III and Sigma Quattro's LCD screens has the same diagonal size of 3.
On the other hand, Sony A7R III features a
Tilting screen where you can change the angle of the screen to make it easier to shoot from waist or over the head levels whereas the Sigma Quattro has a fixed type screen which provides less flexibility in shooting positions compared to A7R III.
Sony A7R III has a 42.0MP Full frame (35.9 x 24 mm ) sized BSI-CMOS sensor and features Bionz X processor. On the other hand, Sigma Quattro has a 29.0MP APS-C (23.5 x 15.6 mm ) sized CMOS (Foveon X3) sensor and features Dual TRUE III processor.
Sony A7R III's sensor provides 13MP more than Sigma Quattro's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely.
On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.
Another difference between these two cameras is that Sony A7R III's sensor lacks anti-alias (Low-Pass) filter. Removing anti-alias filter increases the sharpness and level of detail but at the same time, it increases the chance of moire occurring in certain scenes.
Below you can see the A7R III and Quattro sensor size comparison.
![Sony A7R III vs Sigma Quattro Sensor Size Comparison]()
Sensor Size and Resolution Comparison image of Sony A7R III and Sigma Quattro Cameras
As seen above, Sony A7R III has a 2.4x Larger sensor area than Sigma Quattro. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in same focal length and aperture.
Number of available lenses is a big decision factor while choosing your interchangeable lens camera. When we look at the available lenses for these two cameras, we see that Sony A7R III has an advantage over Sigma Quattro. There are 123 lenses for Sony A7R III's Sony E mount, on the other hand there are only 76 lenses for Sigma Quattro's Sigma SA Bayonet lens mount.
Another important factor is the availability of image stabilization. Sony A7R III has a big advantage in this regard because it has a sensor based image stabilization (IS) which means that all the lenses mounted to this body will be stabilized. A7R III's built-in Image stabilization system is effective to compensate vibration up to 5.0-stops according to CIPA standards.28 lenses for Sigma SA Bayonet mount with Optical Image Stabilization features.
| Lens Type |
# of Sony A7R III Lenses |
# of Sigma Quattro Lenses |
| Standard Zoom |
12 (9 Full Frame) |
9 |
| Standard Prime |
18 (9 Full Frame) |
5 |
| Wideangle Zoom |
7 (6 Full Frame) |
8 |
| Wideangle Prime |
39 (23 Full Frame) |
8 |
| Telephoto Zoom |
9 (7 Full Frame) |
18 |
| Telephoto Prime |
18 (14 Full Frame) |
8 |
| SuperZoom |
8 (1 Full Frame) |
9 |
| Wideangle Fisheye Prime |
2 (0 Full Frame) |
4 |
| Macro Prime |
8 (7 Full Frame) |
7 |
| Perspective Control Prime |
2 (2 Full Frame) |
n/a |
| Telephoto Mirror Prime |
n/a |
n/a |
| TOTAL |
123 (78 Full Frame) |
76 |
In this section, we rank and compare Sony A7R III and Sigma Quattro for five different photography types in order to make your decision process easier in case you are specifically interested in one or more of these areas.
Sony A7R III for Portrait Photography
Sigma Quattro for Portrait Photography
Large Full frame (35.9 x 24 mm) sensor
Very High Resolution Sensor: 42.0MP
Image Stabilization
Electronic Built-in Viewfinder
Good Ergonomics&Handling
Read the details
Large APS-C (23.5 x 15.6 mm) sensor
Very High Resolution Sensor: 29.0MP
Electronic Built-in Viewfinder
Average Ergonomics&Handling
No Image Stabilization
Read the details
Sony A7R III for Street Photography
Sigma Quattro for Street Photography
Large Full frame (35.9 x 24 mm) sensor
Image Stabilization
Electronic Built-in Viewfinder
Live-view
Face-Detection Focusing
Tilting LCD Screen
Medium sized Body
Read the details
Large APS-C (23.5 x 15.6 mm) sensor
Electronic Built-in Viewfinder
Live-view
Face-Detection Focusing
Medium sized Body
No Image Stabilization
Read the details
Sony A7R III for Sports Photography
Sigma Quattro for Sports Photography
Image Stabilization
Electronic Built-in Viewfinder
Good Ergonomics&Handling
Fast Continuous Shooting: 10.0fps
Anti Flicker feature
Environmental Sealings
Fast Max shutter speed: 1/8000s
425 Focus Points
Good Battery Life: 650 shots
Good Low Light ISO
Wireless Connection
Read the details
Electronic Built-in Viewfinder
Environmental Sealings
Fast Max shutter speed: 1/4000s
Average Ergonomics&Handling
Average Continuous Shooting: 3.8fps
No Image Stabilization
Slow Continuous Shooting: 3.8fps
9 Focus Points
Read the details
Sony A7R III for Daily Photography
Sigma Quattro for Daily Photography
Large Full frame (35.9 x 24 mm) sensor
Anti Flicker feature
Environmental Sealings
Medium size Body
657g
Body Thickness 74mm
Read the details
Large APS-C (23.5 x 15.6 mm) sensor
Environmental Sealings
Medium size Body
625g
Body Thickness 91mm
Read the details
Sony A7R III for Landscape Photography
Sigma Quattro for Landscape Photography
Large Full frame (35.9 x 24 mm) sensor
Very High Resolution Sensor: 42.0MP
Environmental Sealings
Live-view
Read the details
Large APS-C (23.5 x 15.6 mm) sensor
Very High Resolution Sensor: 29.0MP
Environmental Sealings
Live-view
Read the details
You may have already made your decision about which camera suits better for your needs and your budget so far but in case you wonder how we rated Sony A7R III and Sigma Quattro, below you can find their scores in five different aspects.
Our Decision Algorithm dynamically scores cameras using 63 different specs, current price and DxO Mark scores (where possible) in order to make a more objective and consistent comparison.
Here is a summary of how Sony A7R III and Sigma Quattro scores compare:
Sony A7R III
Ranked
#4 out of 85 in SLR-style mirrorless cameras
Ranked
#4 out of 1219 in all Cameras
Sigma Quattro
Ranked
#88 out of 126 in Rangefinder-style mirrorless cameras
Ranked
#384 out of 1219 in all Cameras
Sony A7R III is the clear winner of this comparison. It has a higher Overall Score and beats Sigma Quattro in all criteria. It has better general image quality, more features, more compact body and offers more value for the money
| General |
Sony Alpha A7R III |
Sigma sd Quattro |
| Brand |
Sony |
Sigma |
| Announced |
2017-10-25 |
2016-02-23 |
| Body Type |
SLR-style mirrorless |
Rangefinder-style mirrorless |
Sensor |
|
|
| Type |
BSI-CMOS |
CMOS (Foveon X3) |
| Size |
Full frame |
APS-C |
| Dimensions |
35.9 x 24 mm |
23.5 x 15.6 mm |
| Area |
861.60mm2 |
366.60mm2 |
| Megapixels |
42 megapixels |
29 megapixels |
| Max Resolution |
7952 x 5304 |
5424 x 3616 |
| Max Native Light sensitivity |
32,000 ISO |
6,400 ISO |
| Max Boosted Light Sensitivity |
102400 ISO |
- |
| Min Native Light sensitivity |
100 ISO |
100 ISO |
| Min Boosted Light Sensitivity |
50 ISO |
- |
| RAW Support |
|
|
Autofocus |
|
|
| AF Touch |
|
|
| AF Continuous |
|
|
| AF Single |
|
|
| AF Tracking |
|
|
| AF Selective |
|
|
| AF Center |
|
|
| AF Multi Area |
|
|
| AF Live View |
|
|
| AF Face Detection |
|
|
| AF Contrast Detection |
|
|
| AF Phase Detection |
|
|
| Number of Focus Points |
425 |
9 |
Lens |
|
|
| Manual Focus |
|
|
| Lens Mount |
Sony E |
Sigma SA Bayonet |
| Number of Available Lenses |
123 |
76 |
Screen |
|
|
| Type |
Tilting |
Fixed type |
| Size |
3 |
3" |
| Resolution |
1,440k dots |
1,620k dots |
| Touch Screen |
|
|
Viewfinder |
|
|
| Viewfinder |
Electronic |
Electronic |
| Viewfinder Resolution |
3,686k dots |
2,360k dots |
| Viewfinder Coverage |
100% |
100% |
| Viewfinder Magnification |
0.78x |
0.73x |
Photography Features |
|
|
| Max Mechanical Shutter |
1/8000s |
1/4000s |
| Shutter Priority |
|
|
| Aperture Priority |
|
|
| Manual Exposure Mode |
|
|
| Custom White Balance |
|
|
| Image Stabilization |
Sensor-shift |
No |
| Built-in Flash |
|
|
| External Flash |
|
|
| Continuous Shooting |
10.0 fps |
3.8 fps |
| Multi-Segment |
|
|
| Average |
|
|
| Spot |
|
|
| Partial |
|
|
| AF-Area |
|
|
| Center Weighted |
|
|
| AE Bracketing |
|
|
| WB Bracketing |
|
|
Video Features |
|
|
| Max Video Resolution |
3840 x 2160 |
n/a |
| Video Formats |
MPEG-4, AVCHD, XAVC S |
n/a |
| Microphone Port |
|
|
| Headphone Port |
|
|
Connectivity |
|
|
| Wireless Connectivity |
Built-In |
None |
| HDMI |
|
|
Physical |
|
|
| Environmental Sealing |
|
|
| Weight |
657g |
625g |
| Dimensions |
127 x 96 x 74mm |
147 x 95 x 91mm |
| Battery Life |
650 shots |
n/a |
Other Features |
|
|
| Timelapse Recording |
|
|
| GPS |
None |
None |
DxO Sensor Scores |
|
|
| DxO Overall Score |
100 |
not tested |
| DxO Color Depth |
26.0 |
not tested |
| DxO Dynamic Range |
14.7 |
not tested |
| DxO Low Light ISO |
3523 |
not tested |
|
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