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Sony A7R III versus Panasonic GH5s

The Sony Alpha A7R III and the Panasonic Lumix DC-GH5s are two enthusiast cameras that were officially introduced, respectively, in October 2017 and January 2018. Both the A7R III and the GH5s are mirrorless interchangeable lens cameras that are based on a full frame (A7R III) and a Four Thirds (GH5s) sensor. The Sony has a resolution of 42.2 megapixel, whereas the Panasonic provides 9.9 MP. Read on to find out how these two cameras compare with respect to their size, their sensors, their features, and their reception by expert reviewers.

Body comparison: Sony A7R III vs Panasonic GH5s

The physical size and weight of the Sony A7R III and the Panasonic GH5s are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All size dimensions are rounded to the nearest millimeter. You can also toggle the display to switch to a percentage comparison if you prefer that the measures are being expressed in relative terms (in this case, the camera on the left – the A7R III – represents 100 percent across all the size and weight measures).

Compare Sony A7R III vs Panasonic GH5s
Compare A7R III versus GH5s top
Compare A7R III and GH5s rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic GH5s is notably larger (12 percent) than the Sony A7R III. Moreover, the GH5s is slightly heavier (2 percent) than the A7R III. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.

The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can find an overview of optics for the two cameras in the Sony FE Lens Catalog (A7R III) and the Micro Four Thirds Lens Catalog (GH5s). Mirrorless cameras, such as the two under consideration, have the additional advantage of having a short flange to focal plane distance, which makes it possible to mount many lenses from other systems onto the camera via adapters.

Concerning battery life, the A7R III gets 650 shots out of its NP-FZ100 battery, while the GH5s can take 440 images on a single charge of its DMW-BLF19 power pack.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you want to switch the focus of the display and review another camera pair, just select a new right or left 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 camera comparisons there.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
Sony A7R III» 5.0 in 3.8 in 2.9 in 22.9 oz 650 Y Oct 2017 3,199 i i Sony A7R III
Panasonic GH5s« 5.5 in 3.9 in 3.4 in 23.3 oz 440 Y Jan 2018 2,499 i i Panasonic GH5s
Nikon Z7« » 5.3 in 4.0 in 2.6 in 23.8 oz 330 Y Aug 2018 3,399 i i Nikon Z7
Panasonic GH5« » 5.5 in 3.9 in 3.4 in 25.6 oz 410 Y Jan 2017 1,999 i i Panasonic GH5
Panasonic FZ300« » 5.2 in 3.6 in 4.6 in 24.4 oz 380 Y Jul 2015 599 i i Panasonic FZ300
Panasonic GH4« » 5.2 in 3.7 in 3.3 in 19.8 oz 500 Y Feb 2014 1,499- i Panasonic GH4
Panasonic GH3« » 5.2 in 3.7 in 3.2 in 19.4 oz 540 Y Sep 2012 1,299- i Panasonic GH3
Panasonic G2« » 4.9 in 3.3 in 2.9 in 15.1 oz 360 n Mar 2010 599- i Panasonic G2
Pentax K-1« » 5.4 in 4.3 in 3.4 in 35.6 oz 760 Y Feb 2016 1,799- i Pentax K-1
Sony A7 III« » 5.0 in 3.8 in 2.9 in 22.9 oz 610 Y Feb 2018 1,999 i i Sony A7 III
Sony A9« » 5.0 in 3.8 in 2.5 in 23.7 oz 650 Y Apr 2017 4,499 i i Sony A9
Sony A99 II« » 5.6 in 4.1 in 3.0 in 29.9 oz 490 Y Sep 2016 3,199 i i Sony A99 II
Sony A7R II« » 5.0 in 3.8 in 2.4 in 22.0 oz 290 Y Jun 2015 3,199- i Sony A7R II
Sony A7S II« » 5.0 in 3.8 in 2.4 in 22.1 oz 370 Y Sep 2015 2,999 i i Sony A7S II
Sony A7 II« » 5.0 in 3.8 in 2.4 in 21.1 oz 350 Y Nov 2014 1,999- i Sony A7 II
Sony A7R« » 5.0 in 3.7 in 1.9 in 16.4 oz 340 Y Oct 2013 2,299- i Sony A7R
Sony A99« » 5.8 in 4.4 in 3.1 in 28.6 oz 500 Y Sep 2012 2,799- i Sony A99

The camera’s price is obviously a critical decision-making factor. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The GH5s was launched at a somewhat lower price (by 22 percent) than the A7R III, which makes it more attractive for photographers on a tight budget. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. 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.

 

Sensor comparison: Sony A7R III vs Panasonic GH5s

The imaging sensor is at the core of digital cameras and its size is one of the main determining factors of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixels in a sensor of the same technological generation. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Sony A7R III features a full frame sensor and the Panasonic GH5s a Four Thirds sensor. The sensor area in the GH5s is 74 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 2.0. The sensor in the A7R III has a native 3:2 aspect ratio, while the one in the GH5s offers a 4:3 aspect.

Sony A7R III and Panasonic GH5s sensor measures

With 42.2MP, the A7R III offers a higher resolution than the GH5s (9.9MP), but the A7R III has smaller individual pixels (pixel pitch of 4.52μm versus 4.77μm for the GH5s). It is noteworthy in this context that the two cameras were released in close succession, so that their sensors are from the same technological generation. Coming back to sensor resolution, it should be mentioned that neither of the two cameras has an anti-alias filter installed, so they are able to capture all the detail the sensor resolves.

The A7R III has on-sensor phase detect pixels, which results in relatively fast and reliable autofocus acquisition during video recording.

Unlike the GH5s, the A7R III has the capacity to capture high quality composite images by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).

A7R III versus GH5s MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
Sony A7R III» Full Frame 42.2 7952 53044K/30p26.014.73523100Sony A7R III
Panasonic GH5s« Four Thirds 9.9 3680 27004K/60p----Panasonic GH5s
Nikon Z7« » Full Frame 45.4 8256 55044K/30p----Nikon Z7
Panasonic GH5« » Four Thirds 20.2 5184 38884K/60p23.913.080777Panasonic GH5
Panasonic FZ300« » 1/2.3 12.0 4000 30004K/30p19.311.09738Panasonic FZ300
Panasonic GH4« » Four Thirds 15.9 4608 34564K/30p23.212.879174Panasonic GH4
Panasonic GH3« » Four Thirds 15.9 4608 34561080/60p22.712.481271Panasonic GH3
Panasonic G2« » Four Thirds 12.0 4000 3000720/30p21.210.349353Panasonic G2
Pentax K-1« » Full Frame 36.2 7360 49121080/60i25.414.6328096Pentax K-1
Sony A7 III« » Full Frame 24.0 6000 40004K/30p25.014.7373096Sony A7 III
Sony A9« » Full Frame 24.0 6000 40004K/30p24.913.3351792Sony A9
Sony A99 II« » Full Frame 42.2 7952 53044K/30p25.413.4231792Sony A99 II
Sony A7R II« » Full Frame 42.2 7952 53044K/30p26.013.9343498Sony A7R II
Sony A7S II« » Full Frame 12.0 4240 28324K/30p23.613.3299385Sony A7S II
Sony A7 II« » Full Frame 24.0 6000 40001080/60p24.913.6244990Sony A7 II
Sony A7R« » Full Frame 36.2 7360 49121080/60p25.614.1274695Sony A7R
Sony A99« » Full Frame 24.0 6000 40001080/60p25.014.0155589Sony A99

Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the GH5s provides a faster frame rate than the A7R III. It can shoot movie footage at 4K/60p, while the Sony is limited to 4K/30p.

 

Feature comparison: Sony A7R III vs Panasonic GH5s

Apart from body and sensor, cameras can and do differ across a variety of features. The two cameras under consideration are similar with respect to both having an electronic viewfinder. However, the one in the A7R III offers a slightly higher resolution than the one in the GH5s (3686k vs 3680k dots). The adjacent table lists some of the other core features of the Sony A7R III and Panasonic GH5s along with similar information for a selection of comparators. The full specs-sheets can be found in the camera manual or in the dpreview camera hub.

Core Features
  Camera
Model
Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec)
Build-in
Flash
(yes/no)
Build-in
Image
Stab
Camera
Model
Sony A7R III»3686 n 3.0 1440 tilting Y 8000 10.0 n Y Sony A7R III
Panasonic GH5s«3680 n 3.2 1620 swivel Y 8000 12.0 n n Panasonic GH5s
Nikon Z7« »3690 Y 3.2 2100 tilting Y 8000 9.0 n Y Nikon Z7
Panasonic GH5« »3680 n 3.2 1620 swivel Y 8000 12.0 n Y Panasonic GH5
Panasonic FZ300« »1440 n 3.0 1040 swivel Y 4000 12.0 Y Y Panasonic FZ300
Panasonic GH4« »2359 n 3.0 1036 swivel Y 8000 12.0 Y n Panasonic GH4
Panasonic GH3« »1746 n 3.0 614 swivel Y 4000 6.0 Y n Panasonic GH3
Panasonic G2« »1440 n 3.0 460 swivel Y 4000 2.6 Y n Panasonic G2
Pentax K-1« »optical Y 3.2 1037 full-flex n 8000 4.4 n Y Pentax K-1
Sony A7 III« »2359 n 3.0 922 tilting Y 8000 10.0 n Y Sony A7 III
Sony A9« »3686 n 3.0 1440 tilting Y 8000 20.0 n Y Sony A9
Sony A99 II« »2400 Y 3.0 1229 full-flex n 8000 12.0 n Y Sony A99 II
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 A7R« »2400 n 3.0 1230 tilting n 8000 4.0 n n Sony A7R
Sony A99« »2359 Y 3.0 1229 full-flex n 8000 6.0 n Y Sony A99

One feature that differentiates the A7R III and the GH5s is in-body image stabilization (IBIS). The A7R III reduces the risk of handshake-induced blur with all attached lenses, while the GH5s has to rely on optical image stabilization in OIS-equipped lenses to achieve the same effect.

The reported shutter speed and shutter burst refer to the use of the mechanical shutter. In addition, both cameras feature an electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (rolling shutter) or shooting under artificial light sources (flickering).

The A7R III writes its imaging data to SDXC or Memory Stick PRO Duo cards, while the GH5s uses SDXC cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails.

Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Type
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
Sony A7R III»YstereomonoYYmicro3.1YYYSony A7R III
Panasonic GH5s«YstereomonoYYfull3.1Y-YPanasonic GH5s
Nikon Z7« »YstereomonoYYmicro3.1Y-YNikon Z7
Panasonic GH5« »YstereomonoYYfull3.1Y-YPanasonic GH5
Panasonic FZ300« »YstereomonoY-mini2.0Y--Panasonic FZ300
Panasonic GH4« »YstereomonoYYmicro2.0YY-Panasonic GH4
Panasonic GH3« »YstereomonoYYmini2.0Y--Panasonic GH3
Panasonic G2« »Ystereomono--mini2.0---Panasonic G2
Pentax K-1« »YstereomonoYYmicro2.0Y--Pentax K-1
Sony A7 III« »YstereomonoYYmicro3.1YYYSony A7 III
Sony A9« »YstereomonoYYmicro2.0YYYSony A9
Sony A99 II« »YstereomonoYYmicro2.0YYYSony A99 II
Sony A7R II« »YstereomonoYYmicro2.0YY-Sony A7R II
Sony A7S II« »YstereomonoYYmicro2.0YY-Sony A7S II
Sony A7 II« »YstereomonoYYmicro2.0YY-Sony A7 II
Sony A7R« »YstereomonoYYmicro2.0YY-Sony A7R
Sony A99« »YstereomonoYYmini2.0---Sony A99

Both the A7R III and the GH5s are recent models that feature in their makers' current product line-up. The A7R III replaced the earlier Sony A7R II, while the GH5s does not have a direct predecessor.

Review summary: Sony A7R III vs Panasonic GH5s

So what is the bottom line? Is the Sony A7R III better than the Panasonic GH5s or vice versa? The listing below highlights the relative strengths of the two models.

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Advantages of the Sony Alpha A7R III:

  • More detail: Offers more megapixels (42.2 vs 9.9MP) with a 109% higher linear resolution.
  • High quality composites: Can combine several shots after pixel-shifting its sensor.
  • Better video autofocus: Features on-sensor phase-detection for more confident movie autofocus.
  • More compact: Is smaller (127x96mm vs 139x98mm) and thus needs less room in the bag.
  • Longer lasting: Can take more shots (650 versus 440) on a single battery charge.
  • Sharper images: Has hand-shake reducing image stabilization build-in.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.

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Arguments in favor of the Panasonic Lumix DC-GH5s:

  • Better video: Provides higher movie framerates (4K/60p versus 4K/30p).
  • Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1620k vs 1440k dots).
  • More flexible LCD: Has swivel screen for odd-angle shots in portrait or landscape orientation.
  • Faster burst: Shoots at higher frequency (12 vs 10 flaps/sec) to capture the decisive moment.
  • More solid recording: Has a full-sized HDMI port for a sturdy connection to an external recorder.
  • More affordable: Was released into a lower priced segment (22 percent cheaper at launch).

If the count of relative strengths (bullet points above) is taken as a measure, the match-up finishes in a tie (7 points each). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision.

A7R III 07:07 GH5s

In any case, while the specs-based evaluation of cameras is instructive in revealing their potential as photographic tools, it remains partial and cannot reveal, for example, the handling experience and imaging performance when actually working with the A7R III or the GH5s. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased. This is why hands-on reviews by experts are important. The following table reports the overall rankings of the cameras as published by some of the major camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). The full reviews are available by clicking on the site logo in the table header.

Review Scores
  Camera
Model
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
Sony A7R III»HiRec90/1004.5/55/55/5 Oct 2017 3,199 i i Sony A7R III
Panasonic GH5s«-84/1004.5/5-4.5/5 Jan 2018 2,499 i i Panasonic GH5s
Nikon Z7« »Rec89/1004.5/5-5/5 Aug 2018 3,399 i i Nikon Z7
Panasonic GH5« »HiRec85/1004.5/55/55/5 Jan 2017 1,999 i i Panasonic GH5
Panasonic FZ300« »HiRec-4.5/54.5/54.5/5 Jul 2015 599 i i Panasonic FZ300
Panasonic GH4« »HiRec85/1005/55/55/5 Feb 2014 1,499- i Panasonic GH4
Panasonic GH3« »HiRec79/1004.5/55/54.5/5 Sep 2012 1,299- i Panasonic GH3
Panasonic G2« »-72/1004/54/54.5/5 Mar 2010 599- i Panasonic G2
Pentax K-1« »-84/1005/54.5/55/5 Feb 2016 1,799- i Pentax K-1
Sony A7 III« »HiRec89/1005/55/55/5 Feb 2018 1,999 i i Sony A7 III
Sony A9« »HiRec89/1005/55/55/5 Apr 2017 4,499 i i Sony A9
Sony A99 II« »-85/1004.5/54.5/54.5/5 Sep 2016 3,199 i i Sony A99 II
Sony A7R II« »HiRec90/1005/54.5/55/5 Jun 2015 3,199- i Sony A7R II
Sony A7S II« »Rec-4.5/55/55/5 Sep 2015 2,999 i i Sony A7S II
Sony A7 II« »Rec82/1004.5/55/55/5 Nov 2014 1,999- i Sony A7 II
Sony A7R« »HiRec82/1004.5/55/55/5 Oct 2013 2,299- i Sony A7R
Sony A99« »-84/1004.5/5rev4.5/5 Sep 2012 2,799- i Sony A99

The review scores listed above should be treated with care, though. The assessments were made in relation to similar cameras of the same technological generation. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

 

Other camera comparisons

Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just use the search menu below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting. If the camera you are interested in is not available, please contact me, and I will try to locate and add the respective data to the application.

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