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Panasonic GX9 versus Fujifilm X-A3

The Panasonic Lumix DC-GX9 and the Fujifilm X-A3 are two digital cameras that were announced, respectively, in February 2018 and August 2016. Both the GX9 and the X-A3 are mirrorless interchangeable lens cameras that are based on a Four Thirds (GX9) and an APS-C (X-A3) sensor. The Panasonic has a resolution of 20.2 megapixel, whereas the Fujifilm provides 24 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: Panasonic GX9 vs Fujifilm X-A3

The physical size and weight of the Panasonic GX9 and the Fujifilm X-A3 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 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 GX9 – represents the basis or 100 percent across all the size and weight measures).

Compare Panasonic GX9 vs Fujifilm X-A3
Compare GX9 versus X-A3 top
Compare GX9 and X-A3 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Fujifilm X-A3 is notably smaller (12 percent) than the Panasonic GX9. Moreover, the X-A3 is markedly lighter (17 percent) than the GX9. In this context, it is worth noting that neither the GX9 nor the X-A3 are weather-sealed.

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 Micro Four Thirds Lens Catalog (GX9) and the Fujinon X Lens Catalog (X-A3). 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 DMW-BLG10 battery, while the X-A3 can take 410 images on a single charge of its NP-W126S 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
Panasonic GX9» 4.9 in 2.8 in 1.9 in 14.4 oz 260 n Feb 2018 849 i i Panasonic GX9
Fujifilm X-A3« 4.6 in 2.6 in 1.6 in 12.0 oz 410 n Aug 2016 399- i Fujifilm X-A3
Fujifilm X-E3« » 4.8 in 2.9 in 1.7 in 11.9 oz 350 n Sep 2017 899 i i Fujifilm X-E3
Fujifilm X-T20« » 4.6 in 3.3 in 1.6 in 13.5 oz 350 n Jan 2017 899 i i Fujifilm X-T20
Fujifilm X-A10« » 4.6 in 2.6 in 1.6 in 11.7 oz 410 n Dec 2016 399- i Fujifilm X-A10
Fujifilm X-A2« » 4.6 in 2.6 in 1.6 in 12.3 oz 410 n Jan 2015 399- i Fujifilm X-A2
Fujifilm X-A1« » 4.6 in 2.6 in 1.5 in 11.6 oz 350 n Sep 2013 399- i Fujifilm X-A1
Olympus E-PL9« » 4.6 in 2.7 in 1.5 in 13.4 oz 350 n Feb 2018 549 i i Olympus E-PL9
Olympus E-M10 III« » 4.8 in 3.3 in 2.0 in 14.5 oz 330 n Aug 2017 649 i i Olympus E-M10 III
Olympus PEN-F« » 4.9 in 2.8 in 1.5 in 15.1 oz 330 n Jan 2016 1,199 i i Olympus PEN-F
Olympus E-M10 II« » 4.7 in 3.3 in 1.9 in 13.8 oz 320 n Aug 2015 799- i Olympus E-M10 II
Panasonic LX100 II« » 4.5 in 2.6 in 2.6 in 13.8 oz 300 n Aug 2018 999 i i Panasonic LX100 II
Panasonic ZS200« » 4.4 in 2.6 in 1.8 in 12.0 oz 370 n Feb 2018 799 i i Panasonic ZS200
Panasonic G9« » 5.4 in 3.8 in 3.6 in 23.2 oz 400 Y Nov 2017 1,699 i i Panasonic G9
Panasonic GX85« » 4.8 in 2.8 in 1.7 in 15.0 oz 290 n Apr 2016 799 i i Panasonic GX85
Panasonic GX8« » 5.2 in 3.1 in 2.5 in 17.2 oz 330 Y Jul 2015 1,199- i Panasonic GX8
Panasonic GX7« » 4.8 in 2.8 in 2.2 in 14.2 oz 350 n Aug 2013 999- i Panasonic GX7

The camera’s price is obviously a critical decision-making factor. 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 X-A3 was launched at a markedly lower price (by 53 percent) than the GX9, 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.

 

Sensor comparison: Panasonic GX9 vs Fujifilm X-A3

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. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the 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 Fujifilm X-A3 an APS-C sensor. The sensor area in the X-A3 is 64 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 1.5. The sensor in the GX9 has a native 4:3 aspect ratio, while the one in the X-A3 offers a 3:2 aspect.

Panasonic GX9 and Fujifilm X-A3 sensor measures

With 24MP, the X-A3 offers a higher resolution than the GX9 (20.2MP), but the X-A3 nevertheless has larger individual pixels (pixel pitch of 3.92μm versus 3.34μm for the GX9) due to its larger sensor. However, the GX9 is a somewhat more recent model (by 1 year and 5 months) than the X-A3, and its sensor might 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.

GX9 versus X-A3 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 adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
Panasonic GX9» Four Thirds 20.2 5184 38884K/30p----Panasonic GX9
Fujifilm X-A3« APS-C 24.0 6000 40001080/60p----Fujifilm X-A3
Fujifilm X-E3« » APS-C 24.0 6000 40004K/30p----Fujifilm X-E3
Fujifilm X-T20« » APS-C 24.0 6000 40004K/30p----Fujifilm X-T20
Fujifilm X-A10« » APS-C 16.0 4896 32641080/30p----Fujifilm X-A10
Fujifilm X-A2« » APS-C 16.0 4896 32641080/30p----Fujifilm X-A2
Fujifilm X-A1« » APS-C 16.0 4896 32641080/30p----Fujifilm X-A1
Olympus E-PL9« » Four Thirds 15.9 4608 34564K/30p----Olympus E-PL9
Olympus E-M10 III« » Four Thirds 15.9 4608 34564K/30p----Olympus E-M10 III
Olympus PEN-F« » Four Thirds 20.2 5184 38881080/60p23.112.489474Olympus PEN-F
Olympus E-M10 II« » Four Thirds 15.9 4608 34561080/60p23.112.584273Olympus E-M10 II
Panasonic LX100 II« » Four Thirds 16.8 4736 35524K/30p----Panasonic LX100 II
Panasonic ZS200« » 1-inch 20.0 5472 36484K/30p----Panasonic ZS200
Panasonic G9« » Four Thirds 20.2 5184 38884K/60p----Panasonic G9
Panasonic GX85« » Four Thirds 15.8 4592 34484K/30p22.912.666271Panasonic GX85
Panasonic GX8« » Four Thirds 20.2 5184 38884K/30p23.512.680675Panasonic GX8
Panasonic GX7« » Four Thirds 15.8 4592 34481080/60p22.612.271870Panasonic GX7

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 GX9 provides a higher video resolution than the X-A3. It can shoot video footage at 4K/30p, while the Fujifilm is limited to 1080/60p.

 

Feature comparison: Panasonic GX9 vs Fujifilm X-A3

Beyond body and sensor, cameras can and do differ across a range of features. For example, the GX9 has an electronic viewfinder (2760k dots), which can be very helpful when shooting in bright sunlight. In contrast, the X-A3 relies on live view and the rear LCD for framing. The following table reports on some other key feature differences and similarities of the Panasonic GX9, the Fujifilm X-A3, and comparable cameras. If you need more detail on the specs, you can find comprehensive listings, for example, 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
Panasonic GX9»2760 n 3.0 1240 tilting Y 4000 9.0 Y Y Panasonic GX9
Fujifilm X-A3«- n 3.0 1040 tilting Y 4000 6.0 Y n Fujifilm X-A3
Fujifilm X-E3« »2360 n 3.0 1040 fixed Y 4000 8.0 n n Fujifilm X-E3
Fujifilm X-T20« »2360 n 3.0 1040 tilting Y 4000 8.0 Y n Fujifilm X-T20
Fujifilm X-A10« »- n 3.0 1040 tilting n 4000 6.0 Y n Fujifilm X-A10
Fujifilm X-A2« »- n 3.0 920 tilting n 4000 5.6 Y n Fujifilm X-A2
Fujifilm X-A1« »- n 3.0 920 tilting n 4000 5.6 Y n Fujifilm X-A1
Olympus E-PL9« »- n 3.0 1040 tilting Y 4000 8.6 Y Y Olympus E-PL9
Olympus E-M10 III« »2360 n 3.0 1040 tilting Y 4000 8.6 Y Y Olympus E-M10 III
Olympus PEN-F« »2360 n 3.0 1037 swivel Y 8000 10.0 n Y Olympus PEN-F
Olympus E-M10 II« »2360 n 3.0 1040 tilting Y 4000 8.0 Y Y Olympus E-M10 II
Panasonic LX100 II« »2764 n 3.0 1240 fixed n 4000 11.0 n Y Panasonic LX100 II
Panasonic ZS200« »2330 n 3.0 1240 fixed Y 2000 10.0 Y Y Panasonic ZS200
Panasonic G9« »3680 Y 3.0 1040 swivel Y 8000 20.0 n Y Panasonic G9
Panasonic GX85« »2765 n 3.0 1040 tilting Y 4000 8.0 Y Y Panasonic GX85
Panasonic GX8« »2360 n 3.0 1040 swivel Y 8000 10.0 n Y Panasonic GX8
Panasonic GX7« »2760 n 3.0 1040 tilting Y 8000 5.0 Y Y Panasonic GX7

One feature that differentiates the GX9 and the X-A3 is in-body image stabilization (IBIS). The GX9 reduces the risk of handshake-induced blur with all attached lenses, while the X-A3 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, the GX9 features 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).

Both the GX9 and the X-A3 write their imaging data to SDXC cards.

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
Panasonic GX9»Ystereomono--micro2.0Y-YPanasonic GX9
Fujifilm X-A3«Ystereomono--micro2.0Y--Fujifilm X-A3
Fujifilm X-E3« »YstereomonoY-micro2.0Y-YFujifilm X-E3
Fujifilm X-T20« »YstereomonoY-micro2.0Y--Fujifilm X-T20
Fujifilm X-A10« »-stereomono--mini2.0Y--Fujifilm X-A10
Fujifilm X-A2« »Ystereomono--mini2.0Y--Fujifilm X-A2
Fujifilm X-A1« »Ystereomono--mini2.0Y--Fujifilm X-A1
Olympus E-PL9« »Ystereomono--micro2.0Y-YOlympus E-PL9
Olympus E-M10 III« »Ystereomono--micro2.0Y--Olympus E-M10 III
Olympus PEN-F« »Ystereomono--micro2.0Y--Olympus PEN-F
Olympus E-M10 II« »Ystereomono--micro2.0Y--Olympus E-M10 II
Panasonic LX100 II« »Ystereomono--micro2.0Y-YPanasonic LX100 II
Panasonic ZS200« »-stereomono--micro2.0Y--Panasonic ZS200
Panasonic G9« »YstereomonoYYfull3.0Y-YPanasonic G9
Panasonic GX85« »Ystereomono--micro2.0YY-Panasonic GX85
Panasonic GX8« »YstereomonoY-micro2.0YY-Panasonic GX8
Panasonic GX7« »Ystereomono--mini2.0YY-Panasonic GX7

The GX9 is a recent model that features in the current product line-up of Panasonic. In contrast, the X-A3 has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the X-A3 was succeeded by the Fujifilm X-A5.

Review summary: Panasonic GX9 vs Fujifilm X-A3

So what conclusions can be drawn? Which of the two cameras – the Panasonic GX9 or the Fujifilm X-A3 – has the upper hand? 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:

  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
  • Easier framing: Has an electronic viewfinder for image framing and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1240k vs 1040k dots).
  • Faster burst: Shoots at higher frequency (9 vs 6 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Sharper images: Has hand-shake reducing image stabilization build-in.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • More modern: Is somewhat more recent (announced 1 year and 5 months after the X-A3).

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Reasons to prefer the Fujifilm X-A3:

  • More detail: Has more megapixels (24 vs 20.2MP), which boosts linear resolution by 11%.
  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better image quality: Features bigger pixels on a larger sensor for higher quality imaging.
  • Richer colors: Larger pixels generate images with better, more accurate colors.
  • More dynamic range: Capable of capturing a wider spectrum of light and dark details.
  • Better low-light sensitivity: Can be used in poorly lit environments and still produce good images.
  • More compact: Is smaller (117x67mm vs 124x72mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 68g or 17 percent) and is thus easier to take along.
  • Longer lasting: Gets more shots (410 versus 260) out of a single battery charge.
  • More affordable: Was introduced into a lower priced category (53 percent cheaper at launch).
  • More heavily discounted: Has been on the market for longer (launched in August 2016).

If the number of relative strengths (bullet points above) is taken as a guide, the X-A3 emerges as the winner of the match-up (11 : 9 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.

GX9 09:11 X-A3

In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it says nothing about, for example, the handling, responsiveness, and overall imaging quality of the GX9 and the X-A3 in practical situations. 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 expert reviews are important. The table below summarizes the assessments of some of the best known camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). You can find the full text of the reviews 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
Panasonic GX9»Rec84/1004.5/54.5/54.5/5 Feb 2018 849 i i Panasonic GX9
Fujifilm X-A3«-74/1004.5/5-4/5 Aug 2016 399- i Fujifilm X-A3
Fujifilm X-E3« »Rec84/1004.5/54.5/54.5/5 Sep 2017 899 i i Fujifilm X-E3
Fujifilm X-T20« »HiRec82/1005/5-4.5/5 Jan 2017 899 i i Fujifilm X-T20
Fujifilm X-A10« »--4/5-4/5 Dec 2016 399- i Fujifilm X-A10
Fujifilm X-A2« »--4.5/54/54.5/5 Jan 2015 399- i Fujifilm X-A2
Fujifilm X-A1« »--4.5/5-4.5/5 Sep 2013 399- i Fujifilm X-A1
Olympus E-PL9« »Rec-4.5/5-4/5 Feb 2018 549 i i Olympus E-PL9
Olympus E-M10 III« »Rec80/1004.5/54/54.5/5 Aug 2017 649 i i Olympus E-M10 III
Olympus PEN-F« »-82/1004.5/54.5/55/5 Jan 2016 1,199 i i Olympus PEN-F
Olympus E-M10 II« »HiRec80/1005/55/55/5 Aug 2015 799- i Olympus E-M10 II
Panasonic LX100 II« »--4.5/5-4.5/5 Aug 2018 999 i i Panasonic LX100 II
Panasonic ZS200« »HiRec81/1004.5/5-4.5/5 Feb 2018 799 i i Panasonic ZS200
Panasonic G9« »HiRec85/1005/55/55/5 Nov 2017 1,699 i i Panasonic G9
Panasonic GX85« »HiRec82/1005/54.5/55/5 Apr 2016 799 i i Panasonic GX85
Panasonic GX8« »Rec82/1004.5/55/54.5/5 Jul 2015 1,199- i Panasonic GX8
Panasonic GX7« »Rec79/1005/54.5/55/5 Aug 2013 999- i Panasonic GX7

The review scores listed above should be treated 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. 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 send me an email, and I will try to update the database with the necessary infos.

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