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Panasonic GX9 vs Sony A7C II

The Panasonic Lumix DC-GX9 and the Sony Alpha A7C II are two enthusiast cameras that were revealed to the public, respectively, in February 2018 and August 2023. Both the GX9 and the A7C II are mirrorless interchangeable lens cameras that are based on a Four Thirds (GX9) and a full frame (A7C II) sensor. The Panasonic has a resolution of 20.2 megapixels, whereas the Sony provides 32.7 MP.

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

Headline Specifications
Panasonic GX9
versus
Sony A7C II
Panasonic GX9   Sony A7C II
Mirrorless system camera Mirrorless system camera
Micro Four Thirds lenses Sony E mount lenses
20.2 MP – Four Thirds sensor 32.7 MP – Full Frame sensor
4K/30p Video 4K/60p Video
ISO 200-25,600 ISO 100-51,200 (50 - 204,800)
Electronic viewfinder (2760k dots) Electronic viewfinder (2360k dots)
3.0" LCD – 1240k dots 3.0" LCD – 1037k dots
Tilting touchscreen Swivel touchscreen
9 shutter flaps per second 10 shutter flaps per second
In-body stabilizationIn-body stabilization
not weather sealedWeathersealed body
260 shots per battery charge540 shots per battery charge
124 x 72 x 47 mm, 407 g 124 x 71 x 63 mm, 514 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Panasonic Lumix DC-GX9 and the Sony Alpha A7C II? 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.

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Body comparison

An illustration of the physical size and weight of the Panasonic GX9 and the Sony A7C II is provided 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.

Both cameras are available in two different colors (black, silver).

Size Panasonic GX9 vs Sony A7C II
Compare GX9 versus A7C II top
Comparison GX9 or A7C II rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7C II is somewhat smaller (1 percent) than the Panasonic GX9. However, the A7C II is markedly heavier (26 percent) than the GX9. It is noteworthy in this context that the A7C II is splash and dust-proof, while the GX9 does not feature any corresponding weather-sealing.

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 (GX9) and the Sony FE Lens Catalog (A7C II). 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 GX9 gets 260 shots out of its Panasonic DMW-BLG10 battery, while the A7C II can take 540 images on a single charge of its Sony NP-FZ100 power pack. The battery packs of both cameras can be charged via USB, which can be very convenient when travelling.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.

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Body Specifications
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price
Street
Price
1.
 
Panasonic GX9 124 mm 72 mm 47 mm 407 g 260 n Feb 2018 US$ 849ebay.com
2.
 
Sony A7C II 124 mm 71 mm 63 mm 514 g 540 Y Aug 2023 US$ 2 199 amazon.com
3.
 
Canon M6 112 mm 68 mm 45 mm 390 g 295 n Feb 2017 US$ 779ebay.com
4.
 
Olympus E-M10 IV 122 mm 84 mm 49 mm 383 g 360 n Aug 2020 US$ 699 amazon.com
5.
 
Olympus E-P7 118 mm 69 mm 38 mm 337 g 360 n Jun 2021 US$ 799 amazon.com
6.
 
Panasonic G90 130 mm 94 mm 77 mm 536 g 290 Y Apr 2019 US$ 999ebay.com
7.
 
Panasonic GH5 139 mm 98 mm 87 mm 725 g 410 Y Jan 2017 US$ 1 999ebay.com
8.
 
Panasonic GX7 123 mm 71 mm 55 mm 402 g 350 n Aug 2013 US$ 999ebay.com
9.
 
Panasonic GX8 133 mm 78 mm 63 mm 487 g 330 Y Jul 2015 US$ 1 199ebay.com
10.
 
Panasonic GX80 122 mm 71 mm 44 mm 426 g 290 n Apr 2016 US$ 799 amazon.com
11.
 
Panasonic LX100 II 115 mm 66 mm 65 mm 392 g 300 n Aug 2018 US$ 999ebay.com
12.
 
Panasonic TZ200 111 mm 65 mm 45 mm 340 g 370 n Feb 2018 US$ 799 amazon.com
13.
 
Sony A7 II 127 mm 96 mm 60 mm 599 g 350 Y Nov 2014 US$ 1 999ebay.com
14.
 
Sony A7 IV 131 mm 96 mm 80 mm 659 g 580 Y Oct 2021 US$ 2 499 amazon.com
15.
 
Sony A7C 124 mm 71 mm 60 mm 509 g 740 Y Sep 2020 US$ 1 799 amazon.com
16.
 
Sony A7R 127 mm 94 mm 48 mm 465 g 340 Y Oct 2013 US$ 2 299ebay.com
17.
 
Sony ZV-E1 121 mm 72 mm 54 mm 483 g 570 Y Mar 2023 US$ 2 199 amazon.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

Any camera decision will naturally be influenced heavily by the price. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The GX9 was launched at a markedly lower price (by 61 percent) than the A7C II, 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.

Sensor comparison

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 tend to be associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Panasonic GX9 features a Four Thirds sensor and the Sony A7C II a full frame sensor. The sensor area in the A7C II is 281 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 GX9 has a native 4:3 aspect ratio, while the one in the A7C II offers a 3:2 aspect.

Panasonic GX9 and Sony A7C II sensor measures

With 32.7MP, the A7C II offers a higher resolution than the GX9 (20.2MP), but the A7C II nevertheless has larger individual pixels (pixel pitch of 5.12μm versus 3.34μm for the GX9) due to its larger sensor. Moreover, the A7C II is a much more recent model (by 5 years and 6 months) than the GX9, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units. 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 resolution advantage of the Sony A7C II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7C II for good quality output (200 dots per inch) amounts to 35 x 23.4 inches or 89 x 59.3 cm, for very good quality (250 dpi) 28 x 18.7 inches or 71.2 x 47.5 cm, and for excellent quality (300 dpi) 23.4 x 15.6 inches or 59.3 x 39.6 cm. The corresponding values for the Panasonic GX9 are 25.9 x 19.4 inches or 65.8 x 49.4 cm for good quality, 20.7 x 15.6 inches or 52.7 x 39.5 cm for very good quality, and 17.3 x 13 inches or 43.9 x 32.9 cm for excellent quality prints.

The A7C II has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Panasonic Lumix DC-GX9 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 A7C II are ISO 100 to ISO 51200, with the possibility to increase the ISO range to 50-204800.

In terms of underlying technology, the GX9 is build around a CMOS sensor, while the A7C II uses a BSI-CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

GX9 versus A7C II MP

For many cameras, data on sensor performance has been reported by DXO Mark. 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.

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Sensor Characteristics
  empty Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Panasonic GX9 Four Thirds 20.2 5184 38884K/30p23.112.8116374
2.
 
Sony A7C II Full Frame 32.7 7008 46724K/60p25.414.7323796
3.
 
Canon M6 APS-C 24.0 6000 40001080/60p23.412.6131778
4.
 
Olympus E-M10 IV Four Thirds 20.2 5184 38884K/30p23.313.2140276
5.
 
Olympus E-P7 Four Thirds 20.2 5184 38884K/30p23.413.3149477
6.
 
Panasonic G90 Four Thirds 20.2 5184 38884K/30p23.213.0127375
7.
 
Panasonic GH5 Four Thirds 20.2 5184 38884K/60p23.913.080777
8.
 
Panasonic GX7 Four Thirds 15.8 4592 34481080/60p22.612.271870
9.
 
Panasonic GX8 Four Thirds 20.2 5184 38884K/30p23.512.680675
10.
 
Panasonic GX80 Four Thirds 15.8 4592 34484K/30p22.912.666271
11.
 
Panasonic LX100 II Four Thirds 16.8 4736 35524K/30p22.812.797972
12.
 
Panasonic TZ200 1-inch 20.0 5472 36484K/30p22.012.244964
13.
 
Sony A7 II Full Frame 24.0 6000 40001080/60p24.913.6244990
14.
 
Sony A7 IV Full Frame 32.7 7008 46724K/60p25.414.7337997
15.
 
Sony A7C Full Frame 24.0 6000 40004K/30p25.014.7340795
16.
 
Sony A7R Full Frame 36.2 7360 49121080/60p25.614.1274695
17.
 
Sony ZV-E1 Full Frame 12.0 4240 28324K/60p25.414.6318196
Note: DXO values in italics represent estimates based on sensor size and age.

Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the A7C II provides a faster frame rate than the GX9. It can shoot movie footage at 4K/60p, 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 consideration are similar with respect to both having an electronic viewfinder. However, the one in the GX9 offers a higher resolution than the one in the A7C II (2760k vs 2360k dots). The adjacent table lists some of the other core features of the Panasonic GX9 and Sony A7C II along with similar information for a selection of comparators.

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Core Features
  empty Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Specifications
(inch/000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Max
Shutter
Speed *
Max
Shutter
Flaps *
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Panasonic GX92760 n3.0 / 1240 tilting Y 1/4000s 9.0/s Y Y
2.
 
Sony A7C II2360 n3.0 / 1037 swivel Y 1/4000s 10.0/s n Y
3.
 
Canon M6optional n3.0 / 1040 tilting Y 1/4000s 9.0/s Y n
4.
 
Olympus E-M10 IV2360 n3.0 / 1040 tilting Y 1/4000s 15.0/s Y Y
5.
 
Olympus E-P7none n3.0 / 1040 tilting Y 1/4000s 8.7/s Y Y
6.
 
Panasonic G902360 n3.0 / 1240 swivel Y 1/4000s 9.0/s Y Y
7.
 
Panasonic GH53680 n3.2 / 1620 swivel Y 1/8000s 12.0/s n Y
8.
 
Panasonic GX72760 n3.0 / 1040 tilting Y 1/8000s 5.0/s Y Y
9.
 
Panasonic GX82360 n3.0 / 1040 swivel Y 1/8000s 10.0/s n Y
10.
 
Panasonic GX802765 n3.0 / 1040 tilting Y 1/4000s 8.0/s Y Y
11.
 
Panasonic LX100 II2764 n3.0 / 1240 fixed Y 1/4000s 11.0/s n Y
12.
 
Panasonic TZ2002330 n3.0 / 1240 fixed Y 1/2000s 10.0/s Y Y
13.
 
Sony A7 II2400 n3.0 / 1230 tilting n 1/8000s 5.0/s n Y
14.
 
Sony A7 IV3686 n3.0 / 1037 swivel Y 1/8000s 10.0/s n Y
15.
 
Sony A7C2360 n3.0 / 922 swivel Y 1/4000s 10.0/s n Y
16.
 
Sony A7R2400 n3.0 / 1230 tilting n 1/8000s 4.0/s n n
17.
 
Sony ZV-E1none n3.0 / 1037 swivel Y 1/8000s 10.0/s n Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One difference between the cameras concerns the presence of an on-board flash. The GX9 has one, while the A7C II does not. While the built-in flash of the GX9 is not very powerful, it can at times be useful as a fill-in light.

The A7C II has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the GX9 does not have a selfie-screen.

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 GX9 and the Sony A7C II both have 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 GX9 writes its imaging data to SDXC cards, while the A7C II uses SDXC or Memory Stick PRO Duo cards. The A7C II supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the GX9 can use UHS-I cards (up to 104 MB/s).

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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 DC-GX9 and Sony Alpha A7C II and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
  empty Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Panasonic GX9Ystereo / mono--micro2.0Y-Y
2.
 
Sony A7C IIYstereo / monoYYmicro3.2Y-Y
3.
 
Canon M6Ystereo / monoY-mini2.0YYY
4.
 
Olympus E-M10 IVYstereo / mono--micro2.0Y-Y
5.
 
Olympus E-P7Ystereo / mono--micro2.0Y-Y
6.
 
Panasonic G90Ystereo / monoYYmicro2.0Y-Y
7.
 
Panasonic GH5Ystereo / monoYYfull3.1Y-Y
8.
 
Panasonic GX7Ystereo / mono--mini2.0YY-
9.
 
Panasonic GX8Ystereo / monoY-micro2.0YY-
10.
 
Panasonic GX80Ystereo / mono--micro2.0Y--
11.
 
Panasonic LX100 IIYstereo / mono--micro2.0Y-Y
12.
 
Panasonic TZ200-stereo / mono--micro2.0Y-Y
13.
 
Sony A7 IIYstereo / monoYYmicro2.0YY-
14.
 
Sony A7 IVYstereo / monoYYfull3.2Y-Y
15.
 
Sony A7CYstereo / monoYYmicro3.2YYY
16.
 
Sony A7RYstereo / monoYYmicro2.0YY-
17.
 
Sony ZV-E1Ystereo / monoYYmicro3.2Y-Y

It is notable that the A7C II has a headphone jack, which makes it possible to attach external headphones and monitor the quality of sound during the recording process. The GX9 lacks such a headphone port.

The A7C II is a recent model that features in the current product line-up of Sony. In contrast, the GX9 has been discontinued (but can be found pre-owned on ebay). There has not been a direct replacement model for the GX9 from Panasonic. Further information on the features and operation of the GX9 and A7C II can be found, respectively, in the Panasonic GX9 Manual (free pdf) or the online Sony A7C II Manual.

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Review summary

So what is the bottom line? Is the Panasonic GX9 better than the Sony A7C II or vice versa? A synthesis of the relative strong points of each of the models is listed below.

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Arguments in favor of the Panasonic Lumix DC-GX9:

  • More detailed viewfinder: Has higher resolution electronic viewfinder (2760k vs 2360k dots).
  • More detailed LCD: Has a higher resolution rear screen (1240k vs 1037k dots).
  • Less heavy: Is lighter (by 107g or 21 percent) and hence easier to carry around.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More affordable: Was introduced into a lower priced category (61 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in February 2018).

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Advantages of the Sony Alpha A7C II:

  • More detail: Has more megapixels (32.7 vs 20.2MP), which boosts linear resolution by 30%.
  • Better image quality: Is equipped with a larger and more technologically advanced sensor.
  • Richer colors: The sensor size advantage translates into images with better, more accurate colors.
  • More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
  • Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
  • Better video: Provides higher movie framerates (4K/60p versus 4K/30p).
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • Better sound: Can connect to an external microphone for higher quality sound recording.
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Longer lasting: Gets more shots (540 versus 260) out of a single battery charge.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Faster data transfer: Supports a more advanced USB protocol (3.2 vs 2.0).
  • Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
  • More modern: Reflects 5 years and 6 months of technical progress since the GX9 launch.

If the count of relative strengths (bullet points above) is taken as a measure, the A7C II is the clear winner of the contest (16 : 6 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding on a new camera. A professional wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

GX9 06:16 A7C II

How about other alternatives? Do the specifications of the Panasonic GX9 and the Sony A7C II 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 GX9 or the A7C II 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 why hands-on reviews by experts are important. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], 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
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price
Street
Price
1.
 
Panasonic GX94/5+4/584/1004.5/54.5/5 Feb 2018 US$ 849ebay.com
2.
 
Sony A7C II4/5..4/587/1004.5/54.5/5 Aug 2023 US$ 2 199 amazon.com
3.
 
Canon M6......80/1004/54/5 Feb 2017 US$ 779ebay.com
4.
 
Olympus E-M10 IV4.5/5..5/581/1004.5/54.5/5 Aug 2020 US$ 699 amazon.com
5.
 
Olympus E-P74/5..4.5/5....4.5/5 Jun 2021 US$ 799 amazon.com
6.
 
Panasonic G904.5/5+4.5/583/1004.5/54.5/5 Apr 2019 US$ 999ebay.com
7.
 
Panasonic GH54.5/5+ +..85/1004.5/55/5 Jan 2017 US$ 1 999ebay.com
8.
 
Panasonic GX74/5+..79/1005/55/5 Aug 2013 US$ 999ebay.com
9.
 
Panasonic GX85/5+..82/1004.5/54.5/5 Jul 2015 US$ 1 199ebay.com
10.
 
Panasonic GX804.5/5+ +..82/1005/55/5 Apr 2016 US$ 799 amazon.com
11.
 
Panasonic LX100 II4.5/5+4.2/582/1004.5/54.5/5 Aug 2018 US$ 999ebay.com
12.
 
Panasonic TZ200..+ +4.5/581/1004.5/54.5/5 Feb 2018 US$ 799 amazon.com
13.
 
Sony A7 II5/5+4/582/1004.5/55/5 Nov 2014 US$ 1 999ebay.com
14.
 
Sony A7 IV5/5+ +4.5/589/1004.5/54.5/5 Oct 2021 US$ 2 499 amazon.com
15.
 
Sony A7C3.5/5..3.5/586/1004/54/5 Sep 2020 US$ 1 799 amazon.com
16.
 
Sony A7R5/5+ +..82/1004.5/55/5 Oct 2013 US$ 2 299ebay.com
17.
 
Sony ZV-E1..+4/5....4.5/5 Mar 2023 US$ 2 199 amazon.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

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Other camera comparisons

Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make your choice using the following search menu. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Panasonic GX9 vs Sony A7C II

    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 GX9 Sony A7C II
    Camera Type Mirrorless system camera Mirrorless system camera
    Camera Lens Micro Four Thirds lenses Sony E mount lenses
    Launch Date February 2018 August 2023
    Launch Price USD 849 USD 2,199
    Sensor Specs Panasonic GX9 Sony A7C II
    Sensor Technology CMOS BSI-CMOS
    Sensor Format Four Thirds Sensor Full Frame Sensor
    Sensor Size 17.3 x 13.0 mm 35.9 x 23.9 mm
    Sensor Area 224.9 mm2 858.01 mm2
    Sensor Diagonal 21.6 mm 43.1 mm
    Crop Factor 2.0x 1.0x
    Sensor Resolution 20.2 Megapixels 32.7 Megapixels
    Image Resolution 5184 x 3888 pixels 7008 x 4672 pixels
    Pixel Pitch 3.34 μm 5.12 μm
    Pixel Density 8.96 MP/cm2 3.82 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability 4K/30p Video 4K/60p Video
    ISO Setting 200 - 25,600 ISO 100 - 51,200 ISO
    ISO Boost 100 - 25,600 ISO 50 - 204,800 ISO
    Image Processor Venus BIONZ XR
    Screen Specs Panasonic GX9 Sony A7C II
    Viewfinder Type Electronic viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.70x 0.7x
    Viewfinder Resolution 2760k dots 2360k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 1240k dots 1037k dots
    LCD Attachment Tilting screen Swivel screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs Panasonic GX9 Sony A7C II
    Focus System Contrast-detect AF On-Sensor Phase-detect
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/4000s
    Continuous Shooting 9 shutter flaps/s 10 shutter flaps/s
    Electronic Shutterup to 1/16000sup to 1/8000s
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium SDXC cards MS or SDXC cards
    Single or Dual Card Slots Single card slot Single card slot
    UHS card support UHS-I UHS-II
    Connectivity Specs Panasonic GX9 Sony A7C II
    External Flash Hotshoe Hotshoe
    USB Connector USB 2.0 USB 3.2
    HDMI Port micro HDMI micro HDMI
    Microphone Port no MIC socket External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support Wifi built-in Wifi built-in
    Bluetooth Support Bluetooth built-in Bluetooth built-in
    Body Specs Panasonic GX9 Sony A7C II
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type Panasonic DMW-BLG10 Sony NP-FZ100
    Battery Life (CIPA)260 shots per charge540 shots per charge
    In-Camera Charging USB charging USB charging
    Body Dimensions 124 x 72 x 47 mm
    (4.9 x 2.8 x 1.9 in)
    124 x 71 x 63 mm
    (4.9 x 2.8 x 2.5 in)
    Camera Weight 407 g (14.4 oz) 514 g (18.1 oz)
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