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Panasonic GX9 vs Pentax K-3 II

The Panasonic Lumix DC-GX9 and the Pentax K-3 II are two enthusiast cameras that were revealed to the public, respectively, in February 2018 and April 2015. The GX9 is a mirrorless interchangeable lens camera, while the K-3 II is a DSLR. The cameras are based on a Four Thirds (GX9) and an APS-C (K-3 II) sensor. The Panasonic has a resolution of 20.2 megapixels, whereas the Pentax provides 24.1 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
Pentax K-3 II
Panasonic GX9   Pentax K-3 II
Mirrorless system camera Digital single lens reflex
Micro Four Thirds lenses Pentax K mount lenses
20.2 MP, Four Thirds Sensor 24.1 MP, APS-C Sensor
4K/30p Video 1080/60i Video
ISO 200-25,600 ISO 100-51,200
Electronic viewfinder (2760k dots) Optical viewfinder
3.0 LCD, 1240k dots 3.2 LCD, 1037k dots
Tilting touchscreen Fixed screen (not touch-sensitive)
9 shutter flaps per second 8.3 shutter flaps per second
In-body stabilizationIn-body stabilization
not weather sealedWeathersealed body
260 shots per battery charge720 shots per battery charge
124 x 72 x 47 mm, 407 g 131 x 100 x 77 mm, 800 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Panasonic Lumix DC-GX9 and the Pentax K-3 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.

Body comparison

The physical size and weight of the Panasonic GX9 and the Pentax K-3 II are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth measures are rounded to the nearest millimeter.

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

Size Panasonic GX9 vs Pentax K-3 II
Compare GX9 versus K-3 II top
Comparison GX9 or K-3 II rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax K-3 II is considerably larger (47 percent) than the Panasonic GX9. Moreover, the K-3 II is substantially heavier (97 percent) than the GX9. It is noteworthy in this context that the K-3 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. 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 DMW-BLG10 battery, while the K-3 II can take 720 images on a single charge of its D-LI90 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 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 GX9 124 mm 72 mm 47 mm 407 g 260 n Feb 2018 849 i
2.
 
Pentax K-3 II 131 mm 100 mm 77 mm 800 g 720 Y Apr 2015 1,099i
3.
 
Canon M6 112 mm 68 mm 45 mm 390 g 295 n Feb 2017 779i
4.
 
Olympus E-P7 118 mm 69 mm 38 mm 337 g 360 n Jun 2021 799 i
5.
 
Olympus E-M10 IV 122 mm 84 mm 49 mm 383 g 360 n Aug 2020 699 i
6.
 
Panasonic G90 130 mm 94 mm 77 mm 536 g 290 Y Apr 2019 999 i
7.
 
Panasonic LX100 II 115 mm 66 mm 65 mm 392 g 300 n Aug 2018 999 i
8.
 
Panasonic TZ200 111 mm 65 mm 45 mm 340 g 370 n Feb 2018 799 i
9.
 
Panasonic GH5 139 mm 98 mm 87 mm 725 g 410 Y Jan 2017 1,999i
10.
 
Panasonic GX80 122 mm 71 mm 44 mm 426 g 290 n Apr 2016 799 i
11.
 
Panasonic GX8 133 mm 78 mm 63 mm 487 g 330 Y Jul 2015 1,199i
12.
 
Panasonic GX7 123 mm 71 mm 55 mm 402 g 350 n Aug 2013 999i
13.
 
Pentax K-3 III 135 mm 104 mm 74 mm 820 g 800 Y Mar 2021 1,999 i
14.
 
Pentax KP 132 mm 101 mm 76 mm 703 g 390 Y Jan 2017 1,099 i
15.
 
Pentax K-70 126 mm 93 mm 74 mm 688 g 410 Y Jun 2016 649 i
16.
 
Pentax K-3 131 mm 100 mm 77 mm 800 g 560 Y Oct 2013 1,299i
17.
 
Pentax K-5 131 mm 97 mm 73 mm 760 g 740 Y Sep 2010 1,099i
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

The price is, of course, an important factor in any camera decision. 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 somewhat lower price (by 23 percent) than the K-3 II, which makes it more attractive for photographers on a tight budget. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down.

Sensor comparison

The imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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. 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 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 Pentax K-3 II an APS-C sensor. The sensor area in the K-3 II is 63 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 K-3 II offers a 3:2 aspect.

In terms of underlying technology, both cameras are build around CMOS sensors.

Panasonic GX9 and Pentax K-3 II sensor measures

With 24.1MP, the K-3 II offers a higher resolution than the GX9 (20.2MP), but the K-3 II nevertheless has larger individual pixels (pixel pitch of 3.90μm versus 3.34μm for the GX9) due to its larger sensor. However, the GX9 is a much more recent model (by 2 years and 9 months) than the K-3 II, 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 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 Pentax K-3 II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the K-3 II for good quality output (200 dots per inch) amounts to 30.1 x 20 inches or 76.4 x 50.8 cm, for very good quality (250 dpi) 24.1 x 16 inches or 61.1 x 40.6 cm, and for excellent quality (300 dpi) 20.1 x 13.3 inches or 50.9 x 33.9 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.

Unlike the GX9, the K-3 II has the capacity to capture high quality composite images by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).

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 Pentax K-3 II are ISO 100 to ISO 51200 (no boost).

GX9 versus K-3 II MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-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 GX9 Four Thirds 20.2 5184 38884K/30p........
2.
 
Pentax K-3 II APS-C 24.1 6016 40001080/60i23.613.6110680
3.
 
Canon M6 APS-C 24.0 6000 40001080/60p........
4.
 
Olympus E-P7 Four Thirds 20.2 5184 38884K/30p........
5.
 
Olympus E-M10 IV Four Thirds 20.2 5184 38884K/30p........
6.
 
Panasonic G90 Four Thirds 20.2 5184 38884K/30p........
7.
 
Panasonic LX100 II Four Thirds 16.8 4736 35524K/30p........
8.
 
Panasonic TZ200 1-inch 20.0 5472 36484K/30p........
9.
 
Panasonic GH5 Four Thirds 20.2 5184 38884K/60p23.913.080777
10.
 
Panasonic GX80 Four Thirds 15.8 4592 34484K/30p22.912.666271
11.
 
Panasonic GX8 Four Thirds 20.2 5184 38884K/30p23.512.680675
12.
 
Panasonic GX7 Four Thirds 15.8 4592 34481080/60p22.612.271870
13.
 
Pentax K-3 III APS-C 25.6 6192 41284K/30p........
14.
 
Pentax KP APS-C 24.1 6016 40001080/60i........
15.
 
Pentax K-70 APS-C 24.0 6000 40001080/60i........
16.
 
Pentax K-3 APS-C 24.1 6016 40001080/60i23.713.4121680
17.
 
Pentax K-5 APS-C 16.1 4928 32641080/25p23.714.1116282

Many modern cameras cannot only take still pictures, but also record videos. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the GX9 provides a higher video resolution than the K-3 II. It can shoot video footage at 4K/30p, while the Pentax is limited to 1080/60i.

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 K-3 II 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 GX9 has a higher magnification than the one of the K-3 II (0.70x vs 0.63x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The table below summarizes some of the other core capabilities of the Panasonic GX9 and Pentax K-3 II 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
Specifications
(inch/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 GX92760 n3.0 / 1240 tilting Y 1/4000s 9.0 Y Y
2.
 
Pentax K-3 IIoptical Y3.2 / 1037 fixed n 1/8000s 8.3 n Y
3.
 
Canon M6optional n3.0 / 1040 tilting Y 1/4000s 9.0 Y n
4.
 
Olympus E-P7none n3.0 / 1040 tilting Y 1/4000s 8.7 Y Y
5.
 
Olympus E-M10 IV2360 n3.0 / 1040 tilting Y 1/4000s 15.0 Y Y
6.
 
Panasonic G902360 n3.0 / 1240 swivel Y 1/4000s 9.0 Y Y
7.
 
Panasonic LX100 II2764 n3.0 / 1240 fixed Y 1/4000s 11.0 n Y
8.
 
Panasonic TZ2002330 n3.0 / 1240 fixed Y 1/2000s 10.0 Y Y
9.
 
Panasonic GH53680 n3.2 / 1620 swivel Y 1/8000s 12.0 n Y
10.
 
Panasonic GX802765 n3.0 / 1040 tilting Y 1/4000s 8.0 Y Y
11.
 
Panasonic GX82360 n3.0 / 1040 swivel Y 1/8000s 10.0 n Y
12.
 
Panasonic GX72760 n3.0 / 1040 tilting Y 1/8000s 5.0 Y Y
13.
 
Pentax K-3 IIIoptical Y3.2 / 1620 fixed Y 1/8000s 12.0 n Y
14.
 
Pentax KPoptical n3.0 / 921 tilting n 1/6000s 7.0 Y Y
15.
 
Pentax K-70optical n3.0 / 921 swivel n 1/6000s 6.0 Y Y
16.
 
Pentax K-3optical Y3.2 / 1037 fixed n 1/8000s 8.3 Y Y
17.
 
Pentax K-5optical Y3.0 / 921 fixed n 1/8000s 7.0 Y Y

One difference between the cameras concerns the presence of an on-board flash. The GX9 has one, while the K-3 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 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 and the Pentax K-3 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.

Concerning the storage of imaging data, both the GX9 and the K-3 II write their files to SDXC cards. The K-3 II features dual card slots, which can be very useful in case a memory card fails. In contrast, the GX9 only has one slot. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.

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 Pentax K-3 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
    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.
 
Pentax K-3 IIYmono / monoYYmini3.0---
3.
 
Canon M6Ystereo / monoY-mini2.0YYY
4.
 
Olympus E-P7Ystereo / mono--micro2.0Y-Y
5.
 
Olympus E-M10 IVYstereo / mono--micro2.0Y-Y
6.
 
Panasonic G90Ystereo / monoYYmicro2.0Y-Y
7.
 
Panasonic LX100 IIYstereo / mono--micro2.0Y-Y
8.
 
Panasonic TZ200-stereo / mono--micro2.0Y-Y
9.
 
Panasonic GH5Ystereo / monoYYfull3.1Y-Y
10.
 
Panasonic GX80Ystereo / mono--micro2.0Y--
11.
 
Panasonic GX8Ystereo / monoY-micro2.0YY-
12.
 
Panasonic GX7Ystereo / mono--mini2.0YY-
13.
 
Pentax K-3 IIIYstereo / monoYYmicro3.2Y-Y
14.
 
Pentax KPYstereo / monoY--2.0Y--
15.
 
Pentax K-70Ystereo / monoY-mini2.0Y--
16.
 
Pentax K-3Ymono / monoYYmini3.0---
17.
 
Pentax K-5Ystereo / monoY-mini2.0---

It is notable that the GX9 offers wifi support, while the K-3 II does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

Studio photographers will appreciate that the Pentax K-3 II (unlike the GX9) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Travel and landscape photographers will find it useful that the K-3 II has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

The GX9 is a recent model that features in the current product line-up of Panasonic. In contrast, the K-3 II has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the K-3 II was succeeded by the Pentax K-3 III. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Panasonic and Pentax websites.

Review summary

So what conclusions can be drawn? Is the Panasonic GX9 better than the Pentax K-3 II or vice versa? The listing below highlights the relative strengths of the two models.

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Reasons to prefer the Panasonic Lumix DC-GX9:

  • Better video: Provides higher definition movie capture (4K/30p vs 1080/60i).
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.70x vs 0.63x).
  • More detailed LCD: Has a higher resolution rear screen (1240k vs 1037k 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.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • More compact: Is smaller (124x72mm vs 131x100mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 393g or 49 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 segment (23 percent cheaper at launch).
  • More modern: Reflects 2 years and 9 months of technical progress since the K-3 II launch.

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Advantages of the Pentax K-3 II:

  • More detail: Has more megapixels (24.1 vs 20.2MP), which boosts linear resolution by 11%.
  • High quality composites: Can combine several shots after pixel-shifting its sensor.
  • Better image quality: Features bigger pixels on a larger sensor for higher quality imaging.
  • Richer colors: The pixel size advantage translates into images with better, more accurate colors.
  • More dynamic range: Larger pixels capture a wider spectrum of light and dark details.
  • Better low-light sensitivity: Larger pixels means good image quality even under poor lighting.
  • 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.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Longer lasting: Gets more shots (720 versus 260) out of a single battery charge.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Easier geotagging: Features an internal GPS sensor to log localization data.
  • Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
  • 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 April 2015).

If the count of individual advantages (bullet points above) is taken as a guide, the K-3 II emerges as the winner of the match-up (19 : 16 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 16:19 K-3 II

How about other alternatives? Do the specifications of the Panasonic GX9 and the Pentax K-3 II 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 comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the GX9 or the K-3 II. 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 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
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Panasonic GX94/5+4/584/1004.5/54.5/5 Feb 2018 849 i
2.
 
Pentax K-3 II4.5/5......5/55/5 Apr 2015 1,099i
3.
 
Canon M6......80/1004/54/5 Feb 2017 779i
4.
 
Olympus E-P7....4.5/5...... Jun 2021 799 i
5.
 
Olympus E-M10 IV4.5/5..5/581/1004.5/54.5/5 Aug 2020 699 i
6.
 
Panasonic G904.5/5+4.5/583/1004.5/54.5/5 Apr 2019 999 i
7.
 
Panasonic LX100 II4.5/5+4.2/582/1004.5/54.5/5 Aug 2018 999 i
8.
 
Panasonic TZ200..+ +..81/1004.5/54.5/5 Feb 2018 799 i
9.
 
Panasonic GH54.5/5+ +..85/1004.5/55/5 Jan 2017 1,999i
10.
 
Panasonic GX804.5/5+ +..82/1005/55/5 Apr 2016 799 i
11.
 
Panasonic GX85/5+..82/1004.5/54.5/5 Jul 2015 1,199i
12.
 
Panasonic GX74/5+..79/1005/55/5 Aug 2013 999i
13.
 
Pentax K-3 III............ Mar 2021 1,999 i
14.
 
Pentax KP4/5..3/582/1005/54.5/5 Jan 2017 1,099 i
15.
 
Pentax K-704.5/5....79/1004.5/54.5/5 Jun 2016 649 i
16.
 
Pentax K-34/5....83/1005/55/5 Oct 2013 1,299i
17.
 
Pentax K-54/5....83/1005/54.5/5 Sep 2010 1,099i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. Hence, a score should always be seen in the context of the camera's market launch date and its price, 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.

Panasonic GX9:
Check Amazon price
Pentax K-3 II:
Check Ebay offers

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 make a corresponding selection in the search boxes 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 GX9 vs Pentax K-3 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 Pentax K-3 II
    Camera Type Mirrorless system camera Digital single lens reflex
    Camera Lens Micro Four Thirds lenses Pentax K mount lenses
    Launch Date February 2018 April 2015
    Launch Price USD 849 USD 1,099
    Sensor Specs Panasonic GX9 Pentax K-3 II
    Sensor Technology CMOS CMOS
    Sensor Format Four Thirds Sensor APS-C Sensor
    Sensor Size 17.3 x 13.0 mm 23.5 x 15.6 mm
    Sensor Area 224.9 mm2 366.6 mm2
    Sensor Diagonal 21.6 mm 28.2 mm
    Crop Factor 2.0x 1.5x
    Sensor Resolution 20.2 Megapixels 24.1 Megapixels
    Image Resolution 5184 x 3888 pixels 6016 x 4000 pixels
    Pixel Pitch 3.34 μm 3.90 μm
    Pixel Density 8.96 MP/cm2 6.56 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability 4K/30p Video 1080/60i Video
    ISO Setting 200 - 25,600 ISO 100 - 51,200 ISO
    ISO Boost 100 - 25,600 ISO no Enhancement
    Image Processor Venus PRIME III
    DXO Sensor Quality (score) .. 80
    DXO Color Depth (bits) .. 23.6
    DXO Dynamic Range (EV) .. 13.6
    DXO Low Light (ISO) .. 1106
    Screen Specs Panasonic GX9 Pentax K-3 II
    Viewfinder Type Electronic viewfinder Optical viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.70x 0.63x
    Viewfinder Resolution 2760k dots
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.2inch
    LCD Resolution 1240k dots 1037k dots
    LCD Attachment Tilting screen Fixed screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Panasonic GX9 Pentax K-3 II
    Focus System Contrast-detect AF Phase-detect AF
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/8000s
    Continuous Shooting 9 shutter flaps/s 8.3 shutter flaps/s
    Electronic Shutterup to 1/16000sno E-Shutter
    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 SDXC cards
    Second Storage Option Single card slot Dual card slots
    UHS card support UHS-I UHS-I
    Connectivity Specs Panasonic GX9 Pentax K-3 II
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 2.0 USB 3.0
    HDMI Port micro HDMI mini HDMI
    Microphone Port no MIC socket External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support Wifi built-in no Wifi
    Bluetooth Support Bluetooth built-in no Bluetooth
    Geotagging no internal GPS GPS built-in
    Body Specs Panasonic GX9 Pentax K-3 II
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type DMW-BLG10 D-LI90
    Battery Life (CIPA)260 shots per charge720 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)
    131 x 100 x 77 mm
    (5.2 x 3.9 x 3.0 in)
    Camera Weight 407 g (14.4 oz) 800 g (28.2 oz)

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