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Panasonic GX9 vs Sony A900

The Panasonic Lumix DC-GX9 and the Sony Alpha A900 are two digital cameras that were revealed to the public, respectively, in February 2018 and September 2008. The GX9 is a mirrorless interchangeable lens camera, while the A900 is a DSLR. The cameras are based on a Four Thirds (GX9) and a full frame (A900) sensor. The Panasonic has a resolution of 20.2 megapixels, whereas the Sony provides 24.4 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 A900
Panasonic GX9   Sony A900
Mirrorless system camera Digital single lens reflex
Micro Four Thirds lenses Sony A mount lenses
20.2 MP – Four Thirds sensor 24.4 MP – Full Frame sensor
4K/30p Video no Video
ISO 200-25,600 ISO 200-3,200 (100 - 6,400)
Electronic viewfinder (2760k dots) Optical viewfinder
3.0" LCD – 1240k dots 3.0" LCD – 922k dots
Tilting touchscreen Fixed screen (not touch-sensitive)
9 shutter flaps per second 5 shutter flaps per second
In-body stabilizationIn-body stabilization
not weather sealedWeathersealed body
260 shots per battery charge880 shots per battery charge
124 x 72 x 47 mm, 407 g 156 x 117 x 82 mm, 895 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 A900? 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

The physical size and weight of the Panasonic GX9 and the Sony A900 are illustrated 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 GX9 can be obtained in two different colors (black, silver), while the A900 is only available in black.

Size Panasonic GX9 vs Sony A900
Compare GX9 versus A900 top
Comparison GX9 or A900 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A900 is considerably larger (104 percent) than the Panasonic GX9. Moreover, the A900 is substantially heavier (120 percent) than the GX9. It is noteworthy in this context that the A900 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. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.

Concerning battery life, the GX9 gets 260 shots out of its Panasonic DMW-BLG10 battery, while the A900 can take 880 images on a single charge of its Sony NP-FM500H power pack. The power pack in the GX9 can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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
  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 A900 156 mm 117 mm 82 mm 895 g 880 Y Sep 2008 US$ 2 999ebay.com
3.
 
Olympus E-M10 II 120 mm 83 mm 47 mm 390 g 320 n Aug 2015 US$ 649ebay.com
4.
 
Olympus E-M10 III 122 mm 84 mm 50 mm 410 g 330 n Aug 2017 US$ 649ebay.com
5.
 
Olympus E-M10 IV 122 mm 84 mm 49 mm 383 g 360 n Aug 2020 US$ 699 amazon.com
6.
 
Olympus E-P7 118 mm 69 mm 38 mm 337 g 360 n Jun 2021 US$ 799 amazon.com
7.
 
Panasonic G95 130 mm 94 mm 77 mm 536 g 290 Y Apr 2019 US$ 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 GX85 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 ZS200 111 mm 65 mm 45 mm 340 g 370 n Feb 2018 US$ 799 amazon.com
13.
 
Sony A7S II 127 mm 96 mm 60 mm 627 g 370 Y Sep 2015 US$ 2 999ebay.com
14.
 
Sony A9 127 mm 96 mm 63 mm 673 g 650 Y Apr 2017 US$ 4 499ebay.com
15.
 
Sony A99 147 mm 111 mm 78 mm 812 g 500 Y Sep 2012 US$ 2 799ebay.com
16.
 
Sony A99 II 143 mm 104 mm 76 mm 849 g 490 Y Sep 2016 US$ 3 199ebay.com
17.
 
Sony A850 156 mm 117 mm 82 mm 895 g 880 Y Aug 2009 US$ 1 999ebay.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 obviously take relative prices into account. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The GX9 was launched at a markedly lower price (by 72 percent) than the A900, which puts it into a different market segment. 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

The size of the sensor inside a digital camera is one of the key determinants 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. 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 more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Panasonic GX9 features a Four Thirds sensor and the Sony A900 a full frame sensor. The sensor area in the A900 is 283 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 A900 offers a 3:2 aspect.

Panasonic GX9 and Sony A900 sensor measures

With 24.4MP, the A900 offers a higher resolution than the GX9 (20.2MP), but the A900 nevertheless has larger individual pixels (pixel pitch of 5.94μm versus 3.34μm for the GX9) due to its larger sensor. However, the GX9 is a much more recent model (by 9 years and 5 months) than the A900, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the GX9 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Sony A900 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A900 for good quality output (200 dots per inch) amounts to 30.2 x 20.2 inches or 76.8 x 51.2 cm, for very good quality (250 dpi) 24.2 x 16.1 inches or 61.4 x 41 cm, and for excellent quality (300 dpi) 20.2 x 13.4 inches or 51.2 x 34.1 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 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 A900 are ISO 200 to ISO 3200, with the possibility to increase the ISO range to 100-6400.

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. 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 A900 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. 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 A900 Full Frame 24.4 6048 4032none23.712.3143179
3.
 
Olympus E-M10 II Four Thirds 15.9 4608 34561080/60p23.112.584273
4.
 
Olympus E-M10 III Four Thirds 15.9 4608 34564K/30p23.112.8112074
5.
 
Olympus E-M10 IV Four Thirds 20.2 5184 38884K/30p23.313.2140276
6.
 
Olympus E-P7 Four Thirds 20.2 5184 38884K/30p23.413.3149477
7.
 
Panasonic G95 Four Thirds 20.2 5184 38884K/30p23.213.0127375
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 GX85 Four Thirds 15.8 4592 34484K/30p22.912.666271
11.
 
Panasonic LX100 II Four Thirds 16.8 4736 35524K/30p22.812.797972
12.
 
Panasonic ZS200 1-inch 20.0 5472 36484K/30p22.012.244964
13.
 
Sony A7S II Full Frame 12.0 4240 28324K/30p23.613.3299385
14.
 
Sony A9 Full Frame 24.0 6000 40004K/30p24.913.3351792
15.
 
Sony A99 Full Frame 24.0 6000 40001080/60p25.014.0155589
16.
 
Sony A99 II Full Frame 42.2 7952 53044K/30p25.413.4231792
17.
 
Sony A850 Full Frame 24.4 6048 4032none23.812.2141579
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 can also record movies. The GX9 indeed provides movie recording capabilities, while the A900 does not. The highest resolution format that the GX9 can use is 4K/30p.

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Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the GX9 has an electronic viewfinder (2760k dots), while the A900 has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The viewfinders of both cameras offer the same field of view (100%), but the viewfinder of the A900 has a higher magnification than the one of the GX9 (0.74x vs 0.70x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Panasonic GX9, the Sony A900, and comparable cameras.

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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 A900optical Y3.0 / 922 fixed n 1/8000s 5.0/s n Y
3.
 
Olympus E-M10 II2360 n3.0 / 1040 tilting Y 1/4000s 8.0/s Y Y
4.
 
Olympus E-M10 III2360 n3.0 / 1040 tilting Y 1/4000s 8.6/s Y Y
5.
 
Olympus E-M10 IV2360 n3.0 / 1040 tilting Y 1/4000s 15.0/s Y Y
6.
 
Olympus E-P7none n3.0 / 1040 tilting Y 1/4000s 8.7/s Y Y
7.
 
Panasonic G952360 n3.0 / 1240 swivel Y 1/4000s 9.0/s Y 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 GX852765 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 ZS2002330 n3.0 / 1240 fixed Y 1/2000s 10.0/s Y Y
13.
 
Sony A7S II2400 n3.0 / 1229 tilting n 1/8000s 5.0/s n Y
14.
 
Sony A93686 n3.0 / 1440 tilting Y 1/8000s 20.0/s n Y
15.
 
Sony A992359 Y3.0 / 1229 full-flex n 1/8000s 6.0/s n Y
16.
 
Sony A99 II2400 Y3.0 / 1229 full-flex n 1/8000s 12.0/s n Y
17.
 
Sony A850optical Y3.0 / 922 fixed n 1/8000s 3.0/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 A900 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 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, the GX9 is one of those camera that have an additional 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 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 GX9 writes its imaging data to SDXC cards, while the A900 uses Compact Flash or Memory Stick PRO Duo cards. The A900 features dual card slots, which can be very useful in case a memory card fails. In contrast, the GX9 only has one slot.

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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 A900 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 A900Y- / ---mini2.0---
3.
 
Olympus E-M10 IIYstereo / mono--micro2.0Y--
4.
 
Olympus E-M10 IIIYstereo / mono--micro2.0Y--
5.
 
Olympus E-M10 IVYstereo / mono--micro2.0Y-Y
6.
 
Olympus E-P7Ystereo / mono--micro2.0Y-Y
7.
 
Panasonic G95Ystereo / monoYYmicro2.0Y-Y
8.
 
Panasonic GX7Ystereo / mono--mini2.0YY-
9.
 
Panasonic GX8Ystereo / monoY-micro2.0YY-
10.
 
Panasonic GX85Ystereo / mono--micro2.0Y--
11.
 
Panasonic LX100 IIYstereo / mono--micro2.0Y-Y
12.
 
Panasonic ZS200-stereo / mono--micro2.0Y-Y
13.
 
Sony A7S IIYstereo / monoYYmicro2.0YY-
14.
 
Sony A9Ystereo / monoYYmicro2.0YYY
15.
 
Sony A99Ystereo / monoYYmini2.0---
16.
 
Sony A99 IIYstereo / monoYYmicro2.0YYY
17.
 
Sony A850Y- / ---mini2.0---

It is notable that the GX9 offers wifi support, while the A900 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

Studio photographers will appreciate that the Sony A900 (unlike the GX9) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the GX9 and the A900 have been discontinued, but can regularly be found used on ebay. The A900 was replaced by the Sony A99, while the GX9 does not have a direct successor. Further information on the features and operation of the GX9 and A900 can be found, respectively, in the Panasonic GX9 Manual (free pdf) or the online Sony A900 Manual.

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Review summary

So what conclusions can be drawn? Which of the two cameras – the Panasonic GX9 or the Sony A900 – has the upper hand? Is one clearly better than the other? Below is a summary of the relative strengths of each of the two contestants.

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Reasons to prefer the Panasonic Lumix DC-GX9:

  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Broader imaging potential: Can record not only still images but also 4K/30p movies.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • More detailed LCD: Has a higher resolution rear screen (1240k vs 922k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • Faster burst: Shoots at higher frequency (9 vs 5 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • More compact: Is smaller (124x72mm vs 156x117mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 488g or 55 percent) and hence easier to carry around.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • More affordable: Was introduced into a lower priced category (72 percent cheaper at launch).
  • More modern: Reflects 9 years and 5 months of technical progress since the A900 launch.

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Arguments in favor of the Sony Alpha A900:

  • More detail: Has more megapixels (24.4 vs 20.2MP), which boosts linear resolution by 12%.
  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.74x vs 0.70x).
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Longer lasting: Gets more shots (880 versus 260) out of a single battery charge.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • More heavily discounted: Has been around for much longer (launched in September 2008).

If the number of relative strengths (bullet points above) is taken as a guide, the GX9 is the clear winner of the match-up (18 : 11 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision 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 18:11 A900

How about other alternatives? Do the specifications of the Panasonic GX9 and the Sony A900 place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best DSLR Camera listings whether the two cameras rank among the cream of the crop.

In any case, while the specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the GX9 or the A900. 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 expert reviews are important. The table below provides a synthesis of the camera assessments of some of the best known photo-gear 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 A900..+ +..+ +4.5/55/5 Sep 2008 US$ 2 999ebay.com
3.
 
Olympus E-M10 II4.5/5+ +..80/1005/55/5 Aug 2015 US$ 649ebay.com
4.
 
Olympus E-M10 III..+5/580/1004.5/54.5/5 Aug 2017 US$ 649ebay.com
5.
 
Olympus E-M10 IV4.5/5..5/581/1004.5/54.5/5 Aug 2020 US$ 699 amazon.com
6.
 
Olympus E-P74/5..4.5/5....4.5/5 Jun 2021 US$ 799 amazon.com
7.
 
Panasonic G954.5/5+4.5/583/1004.5/54.5/5 Apr 2019 US$ 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 GX854.5/5+ +..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 ZS200..+ +4.5/581/1004.5/54.5/5 Feb 2018 US$ 799 amazon.com
13.
 
Sony A7S II5/5+....4.5/55/5 Sep 2015 US$ 2 999ebay.com
14.
 
Sony A95/5+ +4.8/589/1005/55/5 Apr 2017 US$ 4 499ebay.com
15.
 
Sony A995/5....84/1004.5/54.5/5 Sep 2012 US$ 2 799ebay.com
16.
 
Sony A99 II....4.5/585/1004.5/54.5/5 Sep 2016 US$ 3 199ebay.com
17.
 
Sony A8503/5....75/100..4.5/5 Aug 2009 US$ 1 999ebay.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 comparisons of ratings among very different cameras or across long time periods 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 a corresponding selection in the search boxes below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Panasonic GX9 vs Sony A900

    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 A900
    Camera Type Mirrorless system camera Digital single lens reflex
    Camera Lens Micro Four Thirds lenses Sony A mount lenses
    Launch Date February 2018 September 2008
    Launch Price USD 849 USD 2,999
    Sensor Specs Panasonic GX9 Sony A900
    Sensor Technology CMOS CMOS
    Sensor Format Four Thirds Sensor Full Frame Sensor
    Sensor Size 17.3 x 13.0 mm 35.9 x 24.0 mm
    Sensor Area 224.9 mm2 861.6 mm2
    Sensor Diagonal 21.6 mm 43.2 mm
    Crop Factor 2.0x 1.0x
    Sensor Resolution 20.2 Megapixels 24.4 Megapixels
    Image Resolution 5184 x 3888 pixels 6048 x 4032 pixels
    Pixel Pitch 3.34 μm 5.94 μm
    Pixel Density 8.96 MP/cm2 2.83 MP/cm2
    Moiré control no AA filter Anti-Alias filter
    Movie Capability 4K/30p Video no Video
    ISO Setting 200 - 25,600 ISO 200 - 3,200 ISO
    ISO Boost 100 - 25,600 ISO 100 - 6,400 ISO
    Image Processor Venus BIONZ
    DXO Sensor Quality (score) .. 79
    DXO Color Depth (bits) .. 23.7
    DXO Dynamic Range (EV) .. 12.3
    DXO Low Light (ISO) .. 1431
    Screen Specs Panasonic GX9 Sony A900
    Viewfinder Type Electronic viewfinder Optical viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.70x 0.74x
    Viewfinder Resolution 2760k dots
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 1240k dots 922k dots
    LCD Attachment Tilting screen Fixed screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Panasonic GX9 Sony A900
    Focus System Contrast-detect AF Phase-detect AF
    Manual Focusing AidFocus Peakingno Peaking Feature
    Continuous Shooting 9 shutter flaps/s 5 shutter flaps/s
    Electronic Shutterup to 1/16000sno E-Shutter
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium SDXC cards CF or MS cards
    Single or Dual Card Slots Single card slot Dual card slots
    Connectivity Specs Panasonic GX9 Sony A900
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 2.0 USB 2.0
    HDMI Port micro HDMI mini HDMI
    Wifi Support Wifi built-in no Wifi
    Bluetooth Support Bluetooth built-in no Bluetooth
    Body Specs Panasonic GX9 Sony A900
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type Panasonic DMW-BLG10 Sony NP-FM500H
    Battery Life (CIPA)260 shots per charge880 shots per charge
    In-Camera Charging USB charging no USB charging
    Body Dimensions 124 x 72 x 47 mm
    (4.9 x 2.8 x 1.9 in)
    156 x 117 x 82 mm
    (6.1 x 4.6 x 3.2 in)
    Camera Weight 407 g (14.4 oz) 895 g (31.6 oz)
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    Check GX9 offers at
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    Check A900 offers at
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