Sony A7 III Comparison Review
The Sony Alpha A7 III is a mirrorless interchangeable lens camera that was announced in February 2018 and is equipped with a full frame sensor. It offers a resolution of 24 megapixel.
The Sony A7 III has a Camera Elo of 3191. This very strong rating puts it among the elite group of camera grand masters. The A7 III ranks among the top 10 percent of all mirrorless interchangeable lens cameras. In terms of its sensor size category (full frame cameras), the A7 III falls among the top 20 percent.
|Sony A7 III|
|Mirrorless system camera|
|Sony E mount lenses|
|24 MP, Full Frame Sensor|
|ISO 100-51200 (50-204800)|
|Electronic viewfinder (2359k dots)|
|3.0" LCD, 922k dots|
|10 shutter flaps per second|
|610 shots per battery charge|
|127 x 96 x 74 mm, 650 g|
Read on to find out more about the camera's size, sensor, features, reception by expert reviewers, and how it compares to other digital cameras.
Body comparison with a credit card
The side-by-side display below illustrates the physical size of the Sony A7 III vis-à-vis a credit card. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth dimensions are rounded to the nearest millimeter.
The table below summarizes the key physical specs of the Sony A7 III alongside a set of comparators. If you want to review a camera pair side-by-side, just select a right-side comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible comparisons there.
|Sony A7 III||5.0 in||3.8 in||2.9 in||22.9 oz||610||Y||Feb 2018||1,999||Sony A7 III|
|Canon 6D Mark II« »||5.7 in||4.4 in||3.0 in||27.0 oz||1200||Y||Jun 2017||1,999||Canon 6D Mark II|
|Nikon Z6« »||5.3 in||4.0 in||2.6 in||23.8 oz||310||Y||Aug 2018||1,999||Nikon Z6|
|Panasonic GH5« »||5.5 in||3.9 in||3.4 in||25.6 oz||410||Y||Jan 2017||1,999||Panasonic GH5|
|Sony A7R III« »||5.0 in||3.8 in||2.9 in||22.9 oz||650||Y||Oct 2017||3,199||Sony A7R III|
|Sony A9« »||5.0 in||3.8 in||2.5 in||23.7 oz||650||Y||Apr 2017||4,499||Sony A9|
|Sony A7R II« »||5.0 in||3.8 in||2.4 in||22.0 oz||290||Y||Jun 2015||3,199||-||Sony A7R II|
|Sony A7S II« »||5.0 in||3.8 in||2.4 in||22.1 oz||370||Y||Sep 2015||2,999||Sony A7S II|
|Sony A7 II« »||5.0 in||3.8 in||2.4 in||21.1 oz||350||Y||Nov 2014||1,999||-||Sony A7 II|
|Sony A7« »||5.0 in||3.7 in||1.9 in||16.7 oz||340||Y||Oct 2013||1,699||-||Sony A7|
|Sony A850« »||6.1 in||4.6 in||3.2 in||31.6 oz||880||Y||Aug 2009||1,999||-||Sony A850|
The listed prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The Sony A7 III was launched in the US market at a price of $1,999. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.
Sensor comparison with a 35mm slide
The imaging sensor is at the core of digital cameras and its size is one of the main determining factors of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units in a sensor of the same technological generation. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better isolate a subject from the background. On the downside, larger sensors tend to be associated with larger, more expensive camera bodies and lenses.
The Sony A7 III features a full frame sensor and has a format factor (sometimes also referred to as "crop factor") of 1.0. Within the spectrum of camera sensors, this places the Sony A7 III among the large-sensor cameras that aim for top notch image quality.
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
|Sony A7 III||Full Frame||24.0||6000||4000||4K/30p||25.0||14.7||3730||96||Sony A7 III|
|Canon 6D Mark II« »||Full Frame||26.0||6240||4160||1080/60p||24.4||11.9||2862||85||Canon 6D Mark II|
|Nikon Z6« »||Full Frame||24.3||6048||4024||4K/30p||-||-||-||-||Nikon Z6|
|Panasonic GH5« »||Four Thirds||20.2||5184||3888||4K/60p||23.9||13.0||807||77||Panasonic GH5|
|Sony A7R III« »||Full Frame||42.2||7952||5304||4K/30p||26.0||14.7||3523||100||Sony A7R III|
|Sony A9« »||Full Frame||24.0||6000||4000||4K/30p||24.9||13.3||3517||92||Sony A9|
|Sony A7R II« »||Full Frame||42.2||7952||5304||4K/30p||26.0||13.9||3434||98||Sony A7R II|
|Sony A7S II« »||Full Frame||12.0||4240||2832||4K/30p||23.6||13.3||2993||85||Sony A7S II|
|Sony A7 II« »||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90||Sony A7 II|
|Sony A7« »||Full Frame||24.0||6000||4000||1080/60p||24.8||14.2||2248||90||Sony A7|
|Sony A850« »||Full Frame||24.4||6048||4032||-||23.8||12.2||1415||79||Sony A850|
Many modern cameras are not only capable of taking still images, but can also record movies. The A7 III indeed provides movie recording capabilities. The highest resolution format that the A7 III can use is 4K/30p.
Apart from body and sensor, cameras can and do differ across a variety of features. The adjacent tables list some of the other core features of the Sony A7 III along with similar information for a selection of comparators.
|Sony A7 III||2359||n||3.0||922||tilting||Y||8000||10.0||n||Y||Sony A7 III|
|Canon 6D Mark II« »||optical||Y||3.0||1040||swivel||Y||4000||6.5||n||n||Canon 6D Mark II|
|Nikon Z6« »||3690||Y||3.2||2100||tilting||Y||8000||12.0||n||Y||Nikon Z6|
|Panasonic GH5« »||3680||n||3.2||1620||swivel||Y||8000||12.0||n||Y||Panasonic GH5|
|Sony A7R III« »||3686||n||3.0||1440||tilting||Y||8000||10.0||n||Y||Sony A7R III|
|Sony A9« »||3686||n||3.0||1440||tilting||Y||8000||20.0||n||Y||Sony A9|
|Sony A7R II« »||2400||n||3.0||1229||tilting||n||8000||5.0||n||Y||Sony A7R II|
|Sony A7S II« »||2400||n||3.0||1229||tilting||n||8000||5.0||n||Y||Sony A7S II|
|Sony A7 II« »||2400||n||3.0||1230||tilting||n||8000||5.0||n||Y||Sony A7 II|
|Sony A7« »||2400||n||3.0||1230||tilting||n||8000||5.0||n||n||Sony A7|
|Sony A850« »||optical||Y||3.0||922||fixed||n||8000||3.0||n||Y||Sony A850|
One feature that differentiates the A7 III from many other cameras is in-body image stabilization (IBIS). The A7 III reduces the risk of handshake-induced blur with all attached lenses, while cameras without IBIS have to rely on optical image stabilization in OIS-equipped lenses to achieve the same effect.
For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Sony Alpha A7 III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Sony A7 III||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y||Sony A7 III|
|Canon 6D Mark II« »||Y||stereo||mono||Y||-||mini||2.0||Y||Y||Y||Canon 6D Mark II|
|Nikon Z6« »||Y||stereo||mono||Y||Y||micro||3.1||Y||-||Y||Nikon Z6|
|Panasonic GH5« »||Y||stereo||mono||Y||Y||full||3.1||Y||-||Y||Panasonic GH5|
|Sony A7R III« »||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y||Sony A7R III|
|Sony A9« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||Y||Sony A9|
|Sony A7R II« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7R II|
|Sony A7S II« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7S II|
|Sony A7 II« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7 II|
|Sony A7« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7|
|Sony A850« »||Y||-||-||-||-||mini||2.0||-||-||-||Sony A850|
It is notable that the A7 III has a microphone port. Such an external microphone input can help to substantially improve the quality of audio recordings when a good external microphone is used.
While the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains partial and cannot reveal, for example, the handling experience and imaging performance when actually working with the A7 III. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable. This is why expert reviews are important. The adjacent table relays the overall verdicts of several of the most popular camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). The full reviews are available by clicking on the site logo in the table header.
|Sony A7 III||HiRec||89/100||5/5||5/5||5/5||Feb 2018||1,999||Sony A7 III|
|Canon 6D Mark II« »||Rec||80/100||4.5/5||4/5||4/5||Jun 2017||1,999||Canon 6D Mark II|
|Nikon Z6« »||-||-||4.5/5||-||5/5||Aug 2018||1,999||Nikon Z6|
|Panasonic GH5« »||HiRec||85/100||4.5/5||5/5||5/5||Jan 2017||1,999||Panasonic GH5|
|Sony A7R III« »||HiRec||90/100||4.5/5||5/5||5/5||Oct 2017||3,199||Sony A7R III|
|Sony A9« »||HiRec||89/100||5/5||5/5||5/5||Apr 2017||4,499||Sony A9|
|Sony A7R II« »||HiRec||90/100||5/5||4.5/5||5/5||Jun 2015||3,199||-||Sony A7R II|
|Sony A7S II« »||Rec||-||4.5/5||5/5||5/5||Sep 2015||2,999||Sony A7S II|
|Sony A7 II« »||Rec||82/100||4.5/5||5/5||5/5||Nov 2014||1,999||-||Sony A7 II|
|Sony A7« »||HiRec||80/100||5/5||4.5/5||5/5||Oct 2013||1,699||-||Sony A7|
|Sony A850« »||-||75/100||-||4/5||4.5/5||Aug 2009||1,999||-||Sony A850|
Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.
Sony A7 III FAQ
Below are some additional questions and answers concerning some particular features of the A7 III.
What type of imaging sensor is used in the A7 III?
The camera features a BSI-CMOS (Backside Illuminated Complementary Metal–Oxide–Semiconductor) sensor.
Which image processing chip is used to convert the raw signal into an image file and perform noise reduction and image sharpening?
Sony equipped the A7 III with the BIONZ X image processor.
What is the ISO sensitivity range of the A7 III?
The camera has a native sensitivity range from ISO 100 to ISO 51200, which can be extended to ISO 50-204800.
Does the Sony A7 III offer an option for completely silent shooting?
Yes, the camera has an electronic shutter that can be activated to make silent picture taking possible.
Does the Sony A7 III feature an autofocus assist light?
Yes, the camera has a lamp built-in that can illuminate the subject and improve autofocus in low-light settings.
What is the fastest shutter speed that can be used with flash?
The A7 III's flash sync speed is 1/250 sec.
Which battery does the A7 III use?
The camera gets its power from the NP-FZ100 (here at amazon), which is a rechargeable Lithium-Ion power pack.
Is there a vertical grip available for the A7 III?
Yes, Sony offers the VG-C3EM as an optional accessory to facilitate shooting in portrait orientation and to provide additional battery power.
Where can I find the best deals for the A7 III?
Camera to camera comparisons
If you would like to see a side-by-side review of this and another camera, just use the search menu below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
- Canon 100D vs Canon 20D
- Canon 5D Mark II vs Panasonic G80
- Canon 750D vs Nikon D7000
- Canon G9 X vs Leica Q Typ 116
- Fujifilm X-E2S vs Fujifilm X-M1
- Fujifilm X-Pro2 vs Hasselblad X1D
- Leica M9 vs Leica X1
- Nikon D7000 vs Fujifilm X-T3
- Panasonic GX8 vs Leica S-E Typ 006
- Panasonic GX80 vs Fujifilm X100S
- Panasonic LX10 vs Nikon D4S
- Sony A6000 vs Leica V-LUX Typ 114
|Camera Model||Sony A7 III|
|Camera Type||Mirrorless system camera|
|Camera Lens||Sony E mount lenses|
|Launch Date||February 2018|
|Launch Price||USD 1999|
|Sensor Format||Full Frame Sensor|
|Sensor Size||35.6 x 23.8 mm|
|Sensor Area||847.28 mm2|
|Sensor Diagonal||42.8 mm|
|Sensor Resolution||24 Megapixels|
|Image Resolution||6000 x 4000 pixels|
|Pixel Pitch||5.94 μm|
|Pixel Density||2.83 MP/cm2|
|Moiré control||no AA filter|
|Movie Capability||4K/30p Video|
|ISO Setting||100-51200 ISO|
|ISO Boost||50-204800 ISO|
|Image Processor||BIONZ X|
|DXO Sensor Quality (score)||96|
|DXO Color Depth (bits)||25.0|
|DXO Dynamic Range (EV)||14.7|
|DXO Low Light (ISO)||3730|
|Viewfinder Type||Electronic viewfinder|
|Viewfinder Field of View||100%|
|Viewfinder Resolution||2359k dots|
|LCD Framing||Live View|
|Rear LCD Size||3.0 inch|
|LCD Resolution||922k dots|
|LCD Attachment||Tilting screen|
|Autofocus System||On-Sensor Phase-detect|
|Maximum Shutter Speed||1/8000s|
|Continuous Shooting||10 shutter flaps/s|
|Silent Shooting||Electronic Shutter|
|Image Stabilization||In-body stabilization|
|Fill Flash||no On-Board Flash|
|Storage Medium||MS or SDXC cards|
|Second Storage Option||Single card slot|
|USB Connector||USB 3.1|
|HDMI Port||micro HDMI|
|Microphone Port||External MIC port|
|Headphone Socket||Headphone port|
|Wifi Support||Wifi built-in|
|Near-Field Communication||NFC built-in|
|Bluetooth Support||Bluetooth built-in|
|Environmental Sealing||Weathersealed body|
|Battery Type||NP-FZ100 power pack|
|Battery Life (CIPA)||610 shots per charge|
|In-Camera Charging||USB charging|
127 x 96 x 74 mm
(5.0 x 3.8 x 2.9 in)
|Camera Weight||650 g (22.9 oz)|
Did you notice an error on this page? If so, please get in touch, so that we can correct the information.