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Panasonic GX8 vs Sony A7S III

The Panasonic Lumix DMC-GX8 and the Sony Alpha 7S III are two digital cameras that were announced, respectively, in July 2015 and July 2020. Both the GX8 and the A7S III are mirrorless interchangeable lens cameras that are based on a Four Thirds (GX8) and a full frame (A7S III) sensor. The Panasonic has a resolution of 20.2 megapixels, whereas the Sony provides 12 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications
Panasonic GX8
versus
Sony A7S III
Panasonic GX8 Sony A7S III
Mirrorless system camera Mirrorless system camera
Micro Four Thirds lenses Sony E mount lenses
20.2 MP, Four Thirds Sensor 12 MP, Full Frame Sensor
4K/30p Video 4K/120p Video
ISO 200-25,600 ISO 80-102,400 (40 - 409,600)
Electronic viewfinder (2360k dots) Electronic viewfinder (9440k dots)
3.0 LCD, 1040k dots 3.0 LCD, 1440k dots
Swivel touchscreen Swivel touchscreen
10 shutter flaps per second 10 shutter flaps per second
In-body stabilizationIn-body stabilization
Weathersealed bodyWeathersealed body
330 shots per battery charge600 shots per battery charge
133 x 78 x 63 mm, 487 g 127 x 97 x 81 mm, 699 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Panasonic Lumix DMC-GX8 and the Sony Alpha 7S III? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.

Body comparison

An illustration of the physical size and weight of the Panasonic GX8 and the Sony A7S III is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All width, height and depth measures are rounded to the nearest millimeter.

The GX8 can be obtained in two different colors (black, silver), while the A7S III is only available in black.

Size Panasonic GX8 vs Sony A7S III
Compare GX8 versus A7S III top
Comparison GX8 or A7S III rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7S III is notably larger (19 percent) than the Panasonic GX8. Moreover, the A7S III is substantially heavier (44 percent) than the GX8. 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 compare the optics available for the two cameras in the Micro Four Thirds Lens Catalog (GX8) and the Sony FE Lens Catalog (A7S III). 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 GX8 gets 330 shots out of its DMW-BLC12 battery, while the A7S III can take 600 images on a single charge of its NP-FZ100 power pack. The power pack in the A7S III can be charged via the USB port, which can be very convenient when travelling.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.

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Body Specifications
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Panasonic GX8 133 mm 78 mm 63 mm 487 g 330 Y Jul 2015 1,199 i
2.
 
Sony A7S III 127 mm 97 mm 81 mm 699 g 600 Y Jul 2020 3,499 i
3.
 
Olympus E-M1 II 134 mm 91 mm 67 mm 574 g 440 Y Sep 2016 1,999 i
4.
 
Olympus PEN-F 125 mm 72 mm 37 mm 427 g 330 n Jan 2016 1,199 i
5.
 
Olympus E-M5 II 124 mm 85 mm 45 mm 469 g 310 Y Feb 2015 1,099 i
6.
 
Olympus E-M1 130 mm 94 mm 63 mm 497 g 350 Y Sep 2013 1,399 i
7.
 
Panasonic G95 130 mm 94 mm 77 mm 536 g 290 Y Apr 2019 999 i
8.
 
Panasonic GX9 124 mm 72 mm 47 mm 407 g 260 n Feb 2018 849 i
9.
 
Panasonic G85 128 mm 89 mm 74 mm 505 g 330 Y Sep 2016 899 i
10.
 
Panasonic GH4 133 mm 93 mm 84 mm 560 g 500 Y Feb 2014 1,499 i
11.
 
Panasonic GX7 123 mm 71 mm 55 mm 402 g 350 n Aug 2013 999 i
12.
 
Sony A7R IV 129 mm 96 mm 78 mm 665 g 670 Y Jul 2019 3,499 i
13.
 
Sony A7R III 127 mm 96 mm 74 mm 650 g 650 Y Oct 2017 3,199 i
14.
 
Sony A9 127 mm 96 mm 63 mm 673 g 650 Y Apr 2017 4,499 i
15.
 
Sony A6500 120 mm 67 mm 53 mm 453 g 350 Y Oct 2016 1,399 i
16.
 
Sony A7R II 127 mm 96 mm 60 mm 625 g 290 Y Jun 2015 3,199 i
17.
 
Sony A7S II 127 mm 96 mm 60 mm 627 g 370 Y Sep 2015 2,999 i
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

Any camera decision will obviously take relative prices into account. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The GX8 was launched at a markedly lower price (by 66 percent) than the A7S III, which puts it into a different market segment. 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

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Sensor comparison

The size of the sensor inside a digital camera is one of the key determinants of image quality. A large sensor will generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have richer color-depth than smaller pixels 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 more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Panasonic GX8 features a Four Thirds sensor and the Sony A7S III a full frame sensor. The sensor area in the A7S III is 276 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 1.0. The sensor in the GX8 has a native 4:3 aspect ratio, while the one in the A7S III offers a 3:2 aspect.

Panasonic GX8 and Sony A7S III sensor measures

Despite having a smaller sensor, the Panasonic GX8 offers a higher resolution of 20.2 megapixels, compared with 12 MP of the Sony A7S III. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.34μm versus 8.40μm for the A7S III). Moreover, it should be noted that the A7S III is much more recent (by 5 years) than the GX8, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units.

The resolution advantage of the Panasonic GX8 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the GX8 for good quality output (200 dots per inch) amounts to 25.9 x 19.4 inches or 65.8 x 49.4 cm, for very good quality (250 dpi) 20.7 x 15.6 inches or 52.7 x 39.5 cm, and for excellent quality (300 dpi) 17.3 x 13 inches or 43.9 x 32.9 cm. The corresponding values for the Sony A7S III are 21.2 x 14.2 inches or 53.8 x 36 cm for good quality, 17 x 11.3 inches or 43.1 x 28.8 cm for very good quality, and 14.1 x 9.4 inches or 35.9 x 24 cm for excellent quality prints.

The Panasonic Lumix DMC-GX8 has a native sensitivity range from ISO 200 to ISO 25600, which can be extended to ISO 100-25600. The corresponding ISO settings for the Sony Alpha 7S III are ISO 80 to ISO 102400, with the possibility to increase the ISO range to 40-409600.

GX8 versus A7S III MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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. Of the two cameras under consideration, the A7S III offers substantially better image quality than the GX8 (overall score 11 points higher). The advantage is based on 0.2 bits higher color depth, 1.3 EV in additional dynamic range, and 1.6 stops in additional low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

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Sensor Characteristics
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Panasonic GX8 Four Thirds 20.2 5184 38884K/30p23.512.6806 75
2.
 
Sony A7S III Full Frame 12.0 4240 28324K/120p23.713.92520 86
3.
 
Olympus E-M1 II Four Thirds 20.2 5184 38884K/30p23.712.81312 80
4.
 
Olympus PEN-F Four Thirds 20.2 5184 38881080/60p23.112.4894 74
5.
 
Olympus E-M5 II Four Thirds 15.9 4608 34561080/60p23.012.5842 73
6.
 
Olympus E-M1 Four Thirds 15.9 4608 34561080/30p23.012.7757 73
7.
 
Panasonic G95 Four Thirds 20.2 5184 38884K/30p...... ..
8.
 
Panasonic GX9 Four Thirds 20.2 5184 38884K/30p...... ..
9.
 
Panasonic G85 Four Thirds 15.8 4592 34484K/30p22.812.5656 71
10.
 
Panasonic GH4 Four Thirds 15.9 4608 34564K/30p23.212.8791 74
11.
 
Panasonic GX7 Four Thirds 15.8 4592 34481080/60p22.612.2718 70
12.
 
Sony A7R IV Full Frame 60.2 9504 63364K/30p26.014.83344 99
13.
 
Sony A7R III Full Frame 42.2 7952 53044K/30p26.014.73523 100
14.
 
Sony A9 Full Frame 24.0 6000 40004K/30p24.913.33517 92
15.
 
Sony A6500 APS-C 24.0 6000 40004K/30p24.513.71405 85
16.
 
Sony A7R II Full Frame 42.2 7952 53044K/30p26.013.93434 98
17.
 
Sony A7S II Full Frame 12.0 4240 28324K/30p23.613.32993 85

Many modern cameras are not only capable of taking still images, but can also record movies. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the A7S III provides a faster frame rate than the GX8. It can shoot movie footage at 4K/120p, while the Panasonic is limited to 4K/30p.

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Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. The two cameras under review are similar with respect to both having an electronic viewfinder. However, the one in the A7S III offers a substantially higher resolution than the one in the GX8 (9440k vs 2360k dots). The table below summarizes some of the other core capabilities of the Panasonic GX8 and Sony A7S III in connection with corresponding information for a sample of similar cameras.

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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)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Panasonic GX82360 n 3.0 1040 swivel Y 1/8000s 10.0 n Y
2.
 
Sony A7S III9440 n 3.0 1440 swivel Y 1/8000s 10.0 n Y
3.
 
Olympus E-M1 II2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
4.
 
Olympus PEN-F2360 n 3.0 1037 swivel Y 1/8000s 10.0 n Y
5.
 
Olympus E-M5 II2360 n 3.0 1037 swivel Y 1/8000s 10.0 n Y
6.
 
Olympus E-M12360 n 3.0 1037 tilting Y 1/8000s 10.0 n Y
7.
 
Panasonic G952360 n 3.0 1240 swivel Y 1/4000s 9.0 Y Y
8.
 
Panasonic GX92760 n 3.0 1240 tilting Y 1/4000s 9.0 Y Y
9.
 
Panasonic G852360 n 3.0 1040 swivel Y 1/4000s 9.0 Y Y
10.
 
Panasonic GH42359 n 3.0 1036 swivel Y 1/8000s 12.0 Y n
11.
 
Panasonic GX72760 n 3.0 1040 tilting Y 1/8000s 5.0 Y Y
12.
 
Sony A7R IV5760 n 3.0 1440 tilting Y 1/8000s 10.0 n Y
13.
 
Sony A7R III3686 n 3.0 1440 tilting Y 1/8000s 10.0 n Y
14.
 
Sony A93686 n 3.0 1440 tilting Y 1/8000s 20.0 n Y
15.
 
Sony A65002359 n 3.0 922 tilting Y 1/4000s 11.0 Y Y
16.
 
Sony A7R II2400 n 3.0 1229 tilting n 1/8000s 5.0 n Y
17.
 
Sony A7S II2400 n 3.0 1229 tilting n 1/8000s 5.0 n Y
Both cameras have an articulated rear screen that can be turned to be front-facing. This feature will be particularly appreciated by vloggers and photographers who are interested in taking selfies.

The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, both cameras under consideration feature an electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).

The Panasonic GX8 has an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.

The GX8 writes its imaging data to SDXC cards, while the A7S III uses CFexpress or SDXC cards. The A7S III features dual card slots, which can be very useful in case a memory card fails. In contrast, the GX8 only has one slot. The A7S III supports UHS-II cards (on both slots), while the GX8 can use UHS-I cards.

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Connectivity comparison

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 Panasonic Lumix DMC-GX8 and Sony Alpha 7S III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
    Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Panasonic GX8YstereomonoY-micro2.0YY-
2.
 
Sony A7S IIIYstereomonoYYfull3.2Y-Y
3.
 
Olympus E-M1 IIYstereomonoYYmicro3.0Y--
4.
 
Olympus PEN-FYstereomono--micro2.0Y--
5.
 
Olympus E-M5 IIYstereomonoY-micro2.0Y--
6.
 
Olympus E-M1YstereomonoY-micro2.0Y--
7.
 
Panasonic G95YstereomonoYYmicro2.0Y-Y
8.
 
Panasonic GX9Ystereomono--micro2.0Y-Y
9.
 
Panasonic G85YstereomonoY-micro2.0Y--
10.
 
Panasonic GH4YstereomonoYYmicro2.0YY-
11.
 
Panasonic GX7Ystereomono--mini2.0YY-
12.
 
Sony A7R IVYstereomonoYYmicro3.1YYY
13.
 
Sony A7R IIIYstereomonoYYmicro3.1YYY
14.
 
Sony A9YstereomonoYYmicro2.0YYY
15.
 
Sony A6500YstereomonoY-micro2.0YY-
16.
 
Sony A7R IIYstereomonoYYmicro2.0YY-
17.
 
Sony A7S IIYstereomonoYYmicro2.0YY-

It is notable that the A7S III has a headphone jack, which makes it possible to attach external headphones and monitor the quality of sound during the recording process. The GX8 lacks such a headphone port.

The A7S III is a recent model that features in the current product line-up of Sony. In contrast, the GX8 has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the GX8 was succeeded by the Panasonic GX9. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Panasonic and Sony websites.

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Review summary

So how do things add up? Is there a clear favorite between the Panasonic GX8 and the Sony A7S III? Which camera is better? The listing below highlights the relative strengths of the two models.

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Reasons to prefer the Panasonic Lumix DMC-GX8:

  • More detail: Offers more megapixels (20.2 vs 12MP) with a 27% higher linear resolution.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • More compact: Is smaller (133x78mm vs 127x97mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 212g or 30 percent) and hence easier to carry around.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • More affordable: Was introduced into a lower priced category (66 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in July 2015).

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Advantages of the Sony Alpha 7S III:

  • Better image quality: Scores substantially higher (11 points) in the DXO overall evaluation.
  • More dynamic range: Captures a broader range of light and dark details (1.3 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (1.6 stops ISO advantage).
  • Better video: Provides higher movie framerates (4K/120p versus 4K/30p).
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • More detailed viewfinder: Has higher resolution electronic viewfinder (9440k vs 2360k dots).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.91x vs 0.77x).
  • More detailed LCD: Has a higher resolution rear screen (1440k vs 1040k dots).
  • Longer lasting: Gets more shots (600 versus 330) out of a single battery charge.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Faster data transfer: Supports a more advanced USB protocol (3.2 vs 2.0).
  • More solid recording: Has a full-sized HDMI port for a sturdy connection to an external recorder.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
  • More modern: Reflects 5 years of technical progress since the GX8 launch.

If the number of relative strengths (bullet points above) is taken as a guide, the A7S III is the clear winner of the contest (16 : 7 points). 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. A professional wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

GX8 07:16 A7S III

How about other alternatives? Do the specifications of the Panasonic GX8 and the Sony A7S III place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera listing whether the two cameras rank among the cream of the crop.

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains incomplete and does no justice, for example, to the way the GX8 or the A7S III perform in practice. 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.

Expert reviews

This is where reviews by experts come in. The table below provides a synthesis of the camera assessments of some of the best known photo-gear review sites (amateurphotographer [AP], cameralabs [CL], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.

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Expert Camera Reviews
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Panasonic GX85/5+82/1004.5/54.5/5 Jul 2015 1,199 i
2.
 
Sony A7S III..+ +91/1004.5/55/5 Jul 2020 3,499 i
3.
 
Olympus E-M1 II5/5+ +85/1004.5/54.5/5 Sep 2016 1,999 i
4.
 
Olympus PEN-F....82/1004.5/55/5 Jan 2016 1,199 i
5.
 
Olympus E-M5 II5/5+ +81/1005/55/5 Feb 2015 1,099 i
6.
 
Olympus E-M15/5+ +84/1004.5/54.5/5 Sep 2013 1,399 i
7.
 
Panasonic G954.5/5+83/1004.5/54.5/5 Apr 2019 999 i
8.
 
Panasonic GX94/5+84/1004.5/54.5/5 Feb 2018 849 i
9.
 
Panasonic G85..+ +84/1005/54.5/5 Sep 2016 899 i
10.
 
Panasonic GH45/5+ +85/1005/55/5 Feb 2014 1,499 i
11.
 
Panasonic GX74/5+79/1005/55/5 Aug 2013 999 i
12.
 
Sony A7R IV5/5+91/1004.5/55/5 Jul 2019 3,499 i
13.
 
Sony A7R III..+ +90/1004.5/55/5 Oct 2017 3,199 i
14.
 
Sony A95/5+ +89/1005/55/5 Apr 2017 4,499 i
15.
 
Sony A65005/5+ +85/1004.5/54.5/5 Oct 2016 1,399 i
16.
 
Sony A7R II5/5+ +90/1005/55/5 Jun 2015 3,199 i
17.
 
Sony A7S II5/5+..4.5/55/5 Sep 2015 2,999 i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

Panasonic GX8:
Check Ebay offers
Sony A7S III:
Check Amazon price

Other camera comparisons

Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just use the search menu below. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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    Specifications: Panasonic GX8 vs Sony A7S III

    Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.

    Camera Specifications
    Camera Model Panasonic GX8 Sony A7S III
    Camera Type Mirrorless system camera Mirrorless system camera
    Camera Lens Micro Four Thirds lenses Sony E mount lenses
    Launch Date July 2015 July 2020
    Launch Price USD 1,199 USD 3,499
    Sensor Specs Panasonic GX8 Sony A7S III
    Sensor Technology CMOS BSI-CMOS
    Sensor Format Four Thirds Sensor Full Frame Sensor
    Sensor Size 17.3 x 13.0 mm 35.6 x 23.8 mm
    Sensor Area 224.9 mm2 847.28 mm2
    Sensor Diagonal 21.6 mm 42.8 mm
    Crop Factor 2.0x 1.0x
    Sensor Resolution 20.2 Megapixels 12 Megapixels
    Image Resolution 5184 x 3888 pixels 4240 x 2832 pixels
    Pixel Pitch 3.34 μm 8.40 μm
    Pixel Density 8.96 MP/cm2 1.42 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability 4K/30p Video 4K/120p Video
    ISO Setting 200 - 25,600 ISO 80 - 102,400 ISO
    ISO Boost 100 - 25,600 ISO 40 - 409,600 ISO
    Image Processor Venus BIONZ XR
    DXO Sensor Quality (score) 75 86
    DXO Color Depth (bits) 23.5 23.7
    DXO Dynamic Range (EV) 12.6 13.9
    DXO Low Light (ISO) 806 2520
    Screen Specs Panasonic GX8 Sony A7S III
    Viewfinder Type Electronic viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.77x 0.91x
    Viewfinder Resolution 2360k dots 9440k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 1040k dots 1440k dots
    LCD Attachment Swivel screen Swivel screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs Panasonic GX8 Sony A7S III
    Focus System Contrast-detect AF Contrast-detect AF
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/8000s
    Continuous Shooting 10 shutter flaps/s 10 shutter flaps/s
    Electronic Shutterup to 1/16000sYES
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium SDXC cards CFexpress or SDXC cards
    Second Storage Option Single card slot Dual card slots
    UHS card support UHS-I Dual UHS-II
    Connectivity Specs Panasonic GX8 Sony A7S III
    External Flash Hotshoe Hotshoe
    USB Connector USB 2.0 USB 3.2
    HDMI Port micro HDMI full HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support Wifi built-in Wifi built-in
    Near-Field Communication NFC built-in no NFC
    Bluetooth Support no Bluetooth Bluetooth built-in
    Body Specs Panasonic GX8 Sony A7S III
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type DMW-BLC12 NP-FZ100
    Battery Life (CIPA)330 shots per charge600 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 133 x 78 x 63 mm
    (5.2 x 3.1 x 2.5 in)
    127 x 97 x 81 mm
    (5.0 x 3.8 x 3.2 in)
    Camera Weight 487 g (17.2 oz) 699 g (24.7 oz)

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