Panasonic G9 vs GX7
The Panasonic Lumix DC-G9 and the Panasonic Lumix DMC-GX7 are two enthusiast cameras that were officially introduced, respectively, in November 2017 and August 2013. Both the G9 and the GX7 are mirrorless interchangeable lens cameras that are equipped with a Four Thirds sensor. The G9 has a resolution of 20.2 megapixels, whereas the GX7 provides 15.8 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
Going beyond this snapshot of core features and characteristics, what are the differences between the Panasonic Lumix DC-G9 and the Panasonic Lumix DMC-GX7? 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.
An illustration of the physical size and weight of the Panasonic G9 and the Panasonic GX7 is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth measures are rounded to the nearest millimeter.
The GX7 can be obtained in two different colors (black, silver), while the G9 is only available in black.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic GX7 is considerably smaller (34 percent) than the Panasonic G9. Moreover, the GX7 is substantially lighter (39 percent) than the G9. It is worth mentioning in this context that the G9 is splash and dust resistant, while the GX7 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. In this particular case, both cameras feature the same lens mount, so that they can use the same lenses. You can compare the optics available in the Micro Four Thirds Lens Catalog. 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 G9 gets 400 shots out of its DMW-BLF19 battery, while the GX7 can take 350 images on a single charge of its DMW-BLG10 power pack. The power pack in the G9 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 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.
|Panasonic G9||5.4 in||3.8 in||3.6 in||23.2 oz||400||Y||Nov 2017||1,699|
|Panasonic GX7||4.8 in||2.8 in||2.2 in||14.2 oz||350||n||Aug 2013||999|
|Fujifilm X-H1||5.5 in||3.8 in||3.4 in||23.7 oz||310||Y||Feb 2018||1,899|
|Olympus E-M1 III||5.3 in||3.6 in||2.7 in||20.5 oz||420||Y||Feb 2020||1,799|
|Olympus E-M1 II||5.3 in||3.6 in||2.6 in||20.2 oz||440||Y||Sep 2016||1,999|
|Olympus E-M10||4.7 in||3.2 in||1.8 in||14.0 oz||320||n||Jan 2014||699|
|Olympus E-PL7||4.5 in||2.6 in||1.5 in||12.6 oz||350||n||Aug 2014||599|
|Olympus E-P5||4.8 in||2.7 in||1.5 in||14.8 oz||330||n||May 2013||999|
|Panasonic GH5s||5.5 in||3.9 in||3.4 in||23.3 oz||440||Y||Jan 2018||2,499|
|Panasonic GX9||4.9 in||2.8 in||1.9 in||14.4 oz||260||n||Feb 2018||849|
|Panasonic GH5||5.5 in||3.9 in||3.4 in||25.6 oz||410||Y||Jan 2017||1,999|
|Panasonic G85||5.0 in||3.5 in||2.9 in||17.8 oz||330||Y||Sep 2016||899|
|Panasonic GX85||4.8 in||2.8 in||1.7 in||15.0 oz||290||n||Apr 2016||799|
|Panasonic GX8||5.2 in||3.1 in||2.5 in||17.2 oz||330||Y||Jul 2015||1,199|
|Panasonic GH4||5.2 in||3.7 in||3.3 in||19.8 oz||500||Y||Feb 2014||1,499|
|Panasonic GH2||4.9 in||3.5 in||3.0 in||15.6 oz||330||n||Sep 2010||899|
|Sony A7 III||5.0 in||3.8 in||2.9 in||22.9 oz||610||Y||Feb 2018||1,999|
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
(1) Number of images that can be taken on a full battery charge according to the CIPA-standard; (2) Official announcement.
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 GX7 was launched at a markedly lower price (by 41 percent) than the G9, 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.
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. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better isolate a subject from the background. On the downside, larger sensors are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.
Both cameras under consideration feature a Four Thirds sensor and have a format factor (sometimes also referred to as "crop factor") of 2.0. Within the spectrum of camera sensors, this places the review cameras among the medium-sized sensor cameras that aim to strike a balance between image quality and portability. Both cameras feature a native aspect ratio (sensor width to sensor height) of 4:3.
While the two cameras under review share the same sensor size, the G9 offers a higher resolution of 20.2 megapixels, compared with 15.8 MP of the GX7. This megapixels advantage translates into a 13 percent gain in linear resolution. On the other hand, these sensor specs imply that the G9 has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.34μm versus 3.77μm for the GX7). In this context, it should be noted, however, that the G9 is much more recent (by 4 years and 3 months) than the GX7, and its sensor will have benefitted from technological advances during this time that compensate for the smaller pixel size. Coming back to sensor resolution, it should be mentioned that the G9 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Panasonic G9 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the G9 for good quality output (200 dots per inch) amounts to 25.9 x 19.4 inches or 65.8 x 49.4 cm, for very good quality (250 dpi) 20.7 x 15.6 inches or 52.7 x 39.5 cm, and for excellent quality (300 dpi) 17.3 x 13 inches or 43.9 x 32.9 cm. The corresponding values for the Panasonic GX7 are 23 x 17.2 inches or 58.3 x 43.8 cm for good quality, 18.4 x 13.8 inches or 46.7 x 35 cm for very good quality, and 15.3 x 11.5 inches or 38.9 x 29.2 cm for excellent quality prints.
Unlike the GX7, the G9 has the capacity to capture high quality composite images (80.6MP) 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-G9 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 Panasonic Lumix DMC-GX7 are ISO 125 to ISO 25600 (no boost).
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.
|Panasonic G9||Four Thirds||20.2||5184||3888||4K/60p||..||..||..||..|
|Panasonic GX7||Four Thirds||15.8||4592||3448||1080/60p||22.6||12.2||718||70|
|Olympus E-M1 III||Four Thirds||20.2||5184||3888||4K/30p||..||..||..||..|
|Olympus E-M1 II||Four Thirds||20.2||5184||3888||4K/30p||23.7||12.8||1312||80|
|Olympus E-M10||Four Thirds||15.9||4608||3456||1080/30p||22.8||12.3||884||72|
|Olympus E-PL7||Four Thirds||15.9||4608||3456||1080/30p||22.7||12.4||873||72|
|Olympus E-P5||Four Thirds||15.9||4608||3456||1080/30p||22.8||12.4||895||72|
|Panasonic GH5s||Four Thirds||9.9||3680||2700||4K/60p||..||..||..||..|
|Panasonic GX9||Four Thirds||20.2||5184||3888||4K/30p||..||..||..||..|
|Panasonic GH5||Four Thirds||20.2||5184||3888||4K/60p||23.9||13.0||807||77|
|Panasonic G85||Four Thirds||15.8||4592||3448||4K/30p||22.8||12.5||656||71|
|Panasonic GX85||Four Thirds||15.8||4592||3448||4K/30p||22.9||12.6||662||71|
|Panasonic GX8||Four Thirds||20.2||5184||3888||4K/30p||23.5||12.6||806||75|
|Panasonic GH4||Four Thirds||15.9||4608||3456||4K/30p||23.2||12.8||791||74|
|Panasonic GH2||Four Thirds||15.9||4608||3456||1080/60i||21.2||11.3||655||60|
|Sony A7 III||Full Frame||24.0||6000||4000||4K/30p||25.0||14.7||3730||96|
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 G9 provides a higher video resolution than the GX7. It can shoot video footage at 4K/60p, while the GX7 is limited to 1080/60p.
Apart from 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 G9 offers a substantially higher resolution than the one in the GX7 (3680k vs 2760k dots). The table below summarizes some of the other core capabilities of the Panasonic G9 and Panasonic GX7 in connection with corresponding information for a sample of similar cameras.
|Olympus E-M1 III||2360||n||3.0||1037||swivel||Y||1/8000s||18.0||n||Y|
|Olympus E-M1 II||2360||n||3.0||1037||swivel||Y||1/8000s||18.0||n||Y|
|Sony A7 III||2359||n||3.0||922||tilting||Y||1/8000s||10.0||n||Y|
One feature that is present on the G9, but is missing on the GX7 is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.The G9 has an articulated LCD that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in snapping selfies. In contrast, the GX7 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 G9 and the Panasonic GX7 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 G9 and the GX7 write their files to SDXC cards. The G9 features dual card slots, which can be very useful in case a memory card fails. In contrast, the GX7 only has one slot. The G9 supports UHS-II cards (on both slots), while the GX7 can use UHS-I cards.
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-G9 and Panasonic Lumix DMC-GX7 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
|Olympus E-M1 III||Y||stereo||mono||Y||Y||micro||3.1||Y||-||Y|
|Olympus E-M1 II||Y||stereo||mono||Y||Y||micro||3.0||Y||-||-|
|Sony A7 III||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y|
It is notable that the G9 has a microphone port, which is missing on the GX7. Such an external microphone input can help to substantially improve the quality of audio recordings when a good external microphone is used.
Studio photographers will appreciate that the Panasonic G9 (unlike the GX7) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
The G9 is a recent model that features in the current product line-up of Panasonic. In contrast, the GX7 has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the GX7 was succeeded by the Panasonic GX85. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Panasonic website.
So what conclusions can be drawn? Is the Panasonic G9 better than the Panasonic GX7 or vice versa? The listing below highlights the relative strengths of the two models.
Advantages of the Panasonic Lumix DC-G9:
- More detail: Offers more megapixels (20.2 vs 15.8MP) with a 13% higher linear resolution.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- High quality composites: Can combine several shots after pixel-shifting its sensor.
- Better video: Provides higher definition movie capture (4K/60p vs 1080/60p).
- 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 detailed viewfinder: Has higher resolution electronic viewfinder (3680k vs 2760k dots).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.83x vs 0.70x).
- Easier setting verification: Features an LCD display on top to control shooting parameters.
- 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.
- Faster burst: Shoots at higher frequency (20 vs 5 flaps/sec) to capture the decisive moment.
- Longer lasting: Can take more shots (400 versus 350) on a single battery charge.
- Easier travel charging: Can be conveniently charged via its USB port.
- Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
- Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
- More solid recording: Has a full-sized HDMI port for a sturdy connection to an external recorder.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- 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.
- Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
- More modern: Reflects 4 years and 3 months of technical progress since the GX7 launch.
Reasons to prefer the Panasonic Lumix DMC-GX7:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- More compact: Is smaller (123x71mm vs 137x97mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 256g or 39 percent) and is thus easier to take along.
- Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- More affordable: Was introduced into a lower priced category (41 percent cheaper at launch).
- More heavily discounted: Has been around for much longer (launched in August 2013).
If the number of relative strengths (bullet points above) is taken as a guide, the G9 is the clear winner of the match-up (22 : 7 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 wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro shooter. Hence, the decision which camera is best and worth buying is often a very personal one.
How about other alternatives? Do the specifications of the Panasonic G9 and the Panasonic GX7 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 technical specifications can provide a useful overview of the capabilities of different cameras, it remains incomplete and does no justice, for example, to the way the G9 or the GX7 perform in practice. 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 hands-on reviews by experts are important. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.
|Panasonic G9||+ +||85/100||5/5||5/5||5/5||Nov 2017||1,699|
|Panasonic GX7||+||79/100||5/5||4.5/5||5/5||Aug 2013||999|
|Fujifilm X-H1||+||86/100||4.5/5||..||4.5/5||Feb 2018||1,899|
|Olympus E-M1 III||..||83/100||4.5/5||..||4/5||Feb 2020||1,799|
|Olympus E-M1 II||+ +||85/100||4.5/5||5/5||4.5/5||Sep 2016||1,999|
|Olympus E-M10||..||80/100||5/5||4.5/5||5/5||Jan 2014||699|
|Olympus E-PL7||+||..||5/5||4.5/5||4/5||Aug 2014||599|
|Olympus E-P5||+ +||78/100||4.5/5||4.5/5||5/5||May 2013||999|
|Panasonic GH5s||..||84/100||4.5/5||5/5||4.5/5||Jan 2018||2,499|
|Panasonic GX9||+||84/100||4.5/5||4.5/5||4.5/5||Feb 2018||849|
|Panasonic GH5||+ +||85/100||4.5/5||5/5||5/5||Jan 2017||1,999|
|Panasonic G85||+ +||84/100||5/5||4.5/5||4.5/5||Sep 2016||899|
|Panasonic GX85||+ +||82/100||5/5||4.5/5||5/5||Apr 2016||799|
|Panasonic GX8||+||82/100||4.5/5||5/5||4.5/5||Jul 2015||1,199|
|Panasonic GH4||+ +||85/100||5/5||5/5||5/5||Feb 2014||1,499|
|Panasonic GH2||+ +||79/100||4.5/5||4.5/5||5/5||Sep 2010||899|
|Sony A7 III||+ +||89/100||5/5||5/5||5/5||Feb 2018||1,999|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The above review scores should be interpreted with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, 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.
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. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
- Canon 1D Mark II vs Panasonic GX7
- Canon SL2 vs Panasonic GX7
- Canon SX50 vs Panasonic GX7
- Canon SX70 vs Panasonic GX7
- Fujifilm X-Pro3 vs Panasonic G9
- Leica M Typ 262 vs Panasonic G9
- Nikon D5200 vs Panasonic G9
- Nikon D5300 vs Panasonic GX7
- Olympus E-300 vs Panasonic G9
- Olympus E-PL8 vs Panasonic G9
- Panasonic G9 vs Panasonic GH4
- Panasonic GX7 vs Sony RX100
Specifications: Panasonic G9 vs Panasonic GX7
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 Model||Panasonic G9||Panasonic GX7|
|Camera Type||Mirrorless system camera||Mirrorless system camera|
|Camera Lens||Micro Four Thirds lenses||Micro Four Thirds lenses|
|Launch Date||November 2017||August 2013|
|Launch Price||USD 1,699||USD 999|
|Sensor Specs||Panasonic G9||Panasonic GX7|
|Sensor Format||Four Thirds Sensor||Four Thirds Sensor|
|Sensor Size||17.3 x 13.0 mm||17.3 x 13.0 mm|
|Sensor Area||224.9 mm2||224.9 mm2|
|Sensor Diagonal||21.6 mm||21.6 mm|
|Sensor Resolution||20.2 Megapixels||15.8 Megapixels|
|Image Resolution||5184 x 3888 pixels||4592 x 3448 pixels|
|Pixel Pitch||3.34 μm||3.77 μm|
|Pixel Density||8.96 MP/cm2||7.04 MP/cm2|
|Moiré control||no AA filter||Anti-Alias filter|
|Movie Capability||4K/60p Video||1080/60p Video|
|ISO Setting||200 - 25,600 ISO||125 - 25,600 ISO|
|ISO Boost||100 - 25,600 ISO||no Enhancement|
|Image Processor||Venus 10||Venus|
|DXO Sensor Quality (score)||..||70|
|DXO Color Depth (bits)||..||22.6|
|DXO Dynamic Range (EV)||..||12.2|
|DXO Low Light (ISO)||..||718|
|Screen Specs||Panasonic G9||Panasonic GX7|
|Viewfinder Type||Electronic viewfinder||Electronic viewfinder|
|Viewfinder Field of View||100%||100%|
|Viewfinder Resolution||3680k dots||2760k dots|
|Top-Level Screen||Control Panel||no Top Display|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||1040k dots||1040k dots|
|LCD Attachment||Swivel screen||Tilting screen|
|Shooting Specs||Panasonic G9||Panasonic GX7|
|Focus System||Contrast-detect AF||Contrast-detect AF|
|Manual Focusing Aid||Focus Peaking||Focus Peaking|
|Max Shutter Speed (mechanical)||1/8000s||1/8000s|
|Continuous Shooting||20 shutter flaps/s||5 shutter flaps/s|
|Electronic Shutter||up to 1/32000s||up to 1/8000s|
|Time-Lapse Photography||Intervalometer built-in||Intervalometer built-in|
|Image Stabilization||In-body stabilization||In-body stabilization|
|Fill Flash||no On-Board Flash||Build-in Flash|
|Storage Medium||SDXC cards||SDXC cards|
|Second Storage Option||Dual card slots||Single card slot|
|UHS card support||Dual UHS-II||UHS-I|
|Connectivity Specs||Panasonic G9||Panasonic GX7|
|Studio Flash||PC Sync socket||no PC Sync|
|USB Connector||USB 3.0||USB 2.0|
|HDMI Port||full HDMI||mini HDMI|
|Microphone Port||External MIC port||no MIC socket|
|Headphone Socket||Headphone port||no Headphone port|
|Wifi Support||Wifi built-in||Wifi built-in|
|Near-Field Communication||no NFC||NFC built-in|
|Bluetooth Support||Bluetooth built-in||no Bluetooth|
|Body Specs||Panasonic G9||Panasonic GX7|
|Environmental Sealing||Weathersealed body||not weather sealed|
|Battery Life (CIPA)||400 shots per charge||350 shots per charge|
|In-Camera Charging||USB charging||no USB charging|
137 x 97 x 92 mm
(5.4 x 3.8 x 3.6 in)
123 x 71 x 55 mm
(4.8 x 2.8 x 2.2 in)
|Camera Weight||658 g (23.2 oz)||402 g (14.2 oz)|
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