Fujifilm GFX 100S vs Panasonic GX9
The Fujifilm GFX 100S and the Panasonic Lumix DC-GX9 are two digital cameras that were announced, respectively, in January 2021 and February 2018. Both the GFX 100S and the GX9 are mirrorless interchangeable lens cameras that are based on a medium format (GFX 100S) and a Four Thirds (GX9) sensor. The Fujifilm has a resolution of 101.8 megapixels, whereas the Panasonic provides 20.2 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 Fujifilm GFX 100S and the Panasonic Lumix DC-GX9? 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.
The physical size and weight of the Fujifilm GFX 100S and the Panasonic GX9 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.
The GX9 can be obtained in two different colors (black, silver), while the GFX 100S 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 GX9 is considerably smaller (43 percent) than the Fujifilm GFX 100S. Moreover, the GX9 is substantially lighter (55 percent) than the GFX 100S. It is worth mentioning in this context that the GFX 100S is splash and dust resistant, 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 GFX 100S gets 460 shots out of its NP-W235 battery, while the GX9 can take 260 images on a single charge of its DMW-BLG10 power pack. The battery packs of both cameras can be charged via USB, which can be very convenient when travelling.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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.
|1.||Fujifilm GFX 100S||150 mm||104 mm||87 mm||900 g||460||Y||Jan 2021||5,999|
|2.||Panasonic GX9||124 mm||72 mm||47 mm||407 g||260||n||Feb 2018||849|
|3.||Canon R5||138 mm||98 mm||88 mm||738 g||320||Y||Jul 2020||3,899|
|4.||Fujifilm X-T4||135 mm||93 mm||64 mm||607 g||500||Y||Feb 2020||1,699|
|5.||Fujifilm X-S10||126 mm||85 mm||65 mm||465 g||325||n||Oct 2020||999|
|6.||Fujifilm GFX 100||156 mm||144 mm||75 mm||1320 g||800||Y||May 2019||9,999|
|7.||Fujifilm GFX 50R||161 mm||97 mm||66 mm||775 g||400||Y||Sep 2018||4,499|
|8.||Fujifilm XP130||110 mm||71 mm||28 mm||207 g||240||n||Jan 2018||229|
|9.||Fujifilm GFX 50S||148 mm||94 mm||91 mm||740 g||400||Y||Sep 2016||6,499|
|10.||Leica SL2-S||146 mm||107 mm||83 mm||931 g||510||Y||Dec 2020||4,895|
|11.||Leica SL2||146 mm||107 mm||42 mm||953 g||370||Y||Nov 2019||5,999|
|12.||Panasonic LX100 II||115 mm||66 mm||65 mm||392 g||300||n||Aug 2018||999|
|13.||Panasonic TZ200||111 mm||65 mm||45 mm||340 g||370||n||Feb 2018||799|
|14.||Panasonic GX80||122 mm||71 mm||44 mm||426 g||290||n||Apr 2016||799|
|15.||Panasonic GX8||133 mm||78 mm||63 mm||487 g||330||Y||Jul 2015||1,199|
|16.||Panasonic GX7||123 mm||71 mm||55 mm||402 g||350||n||Aug 2013||999|
|17.||Sony A1||129 mm||97 mm||81 mm||737 g||530||Y||Jan 2021||6,499|
|Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
Any camera decision will naturally be influenced heavily by the price. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The GX9 was launched at a markedly lower price (by 86 percent) than the GFX 100S, 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.
The imaging sensor is at the core of digital cameras and its size is one of the main determining factors of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixels in a sensor of the same technological generation. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors tend to be more expensive and lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Fujifilm GFX 100S features a medium format sensor and the Panasonic GX9 a Four Thirds sensor. The sensor area in the GX9 is 84 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 0.79 and 2.0. Both cameras feature a native aspect ratio (sensor width to sensor height) of 4:3.
With 101.8MP, the GFX 100S offers a higher resolution than the GX9 (20.2MP), but the GFX 100S nevertheless has larger individual pixels (pixel pitch of 3.76μm versus 3.34μm for the GX9) due to its larger sensor. Moreover, the GFX 100S is a much more recent model (by 2 years and 11 months) than the GX9, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels. 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 Fujifilm GFX 100S implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the GFX 100S for good quality output (200 dots per inch) amounts to 58.2 x 43.7 inches or 147.9 x 110.9 cm, for very good quality (250 dpi) 46.6 x 34.9 inches or 118.3 x 88.8 cm, and for excellent quality (300 dpi) 38.8 x 29.1 inches or 98.6 x 74 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 GFX 100S has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Fujifilm GFX 100S has a native sensitivity range from ISO 100 to ISO 12800, which can be extended to ISO 50-102400. The corresponding ISO settings for the Panasonic Lumix DC-GX9 are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 100-25600.
Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
| DXO |
|1.||Fujifilm GFX 100S||Medium Format||101.8||11648||8736||4K/30p||..||..||..||..|
|2.||Panasonic GX9||Four Thirds||20.2||5184||3888||4K/30p||..||..||..||..|
|3.||Canon R5||Full Frame||44.8||8192||5464||8k/30p||25.3||14.6||3042||95|
|6.||Fujifilm GFX 100||Medium Format||101.8||11648||8736||4K/30p||..||..||..||..|
|7.||Fujifilm GFX 50R||Medium Format||51.1||8256||6192||1080/30p||..||..||..||..|
|9.||Fujifilm GFX 50S||Medium Format||51.1||8256||6192||1080/30p||..||..||..||..|
|10.||Leica SL2-S||Full Frame||24.0||6000||4000||4K/60p||..||..||..||..|
|11.||Leica SL2||Full Frame||46.7||8368||5584||4K/60p||..||..||..||..|
|12.||Panasonic LX100 II||Four Thirds||16.8||4736||3552||4K/30p||..||..||..||..|
|14.||Panasonic GX80||Four Thirds||15.8||4592||3448||4K/30p||22.9||12.6||662||71|
|15.||Panasonic GX8||Four Thirds||20.2||5184||3888||4K/30p||23.5||12.6||806||75|
|16.||Panasonic GX7||Four Thirds||15.8||4592||3448||1080/60p||22.6||12.2||718||70|
|17.||Sony A1||Full Frame||49.8||8640||5760||8k/30p||..||..||..||..|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, and both provide the same movie specifications (4K/30p).
Apart from body and sensor, cameras can and do differ across a variety of features. The two cameras under consideration are similar with respect to both having an electronic viewfinder. However, the one in the GFX 100S offers a substantially higher resolution than the one in the GX9 (3690k vs 2760k dots). The adjacent table lists some of the other core features of the Fujifilm GFX 100S and Panasonic GX9 along with similar information for a selection of comparators.
|1.||Fujifilm GFX 100S||3690||Y||3.2||2360||full-flex||Y||1/4000s||5.0||n||Y|
|6.||Fujifilm GFX 100||optional||Y||3.2||2360||tilting||Y||1/4000s||5.0||n||Y|
|7.||Fujifilm GFX 50R||3690||n||3.2||2360||tilting||Y||1/4000s||3.0||n||n|
|9.||Fujifilm GFX 50S||optional||Y||3.2||2360||full-flex||Y||1/4000s||3.0||n||n|
|12.||Panasonic LX100 II||2764||n||3.0||1240||fixed||Y||1/4000s||11.0||n||Y|
One feature that is present on the GFX 100S, but is missing on the GX9 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 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 Fujifilm GFX 100S and the Panasonic GX9 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 GFX 100S and the GX9 write their files to SDXC cards. The GFX 100S features dual card slots, which can be very useful in case a memory card fails. In contrast, the GX9 only has one slot. The GFX 100S supports UHS-II cards (on both slots), while the GX9 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 Fujifilm GFX 100S and Panasonic Lumix DC-GX9 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
|1.||Fujifilm GFX 100S||Y||stereo||mono||Y||Y||micro||3.2||Y||-||Y|
|6.||Fujifilm GFX 100||Y||stereo||mono||Y||Y||micro||3.1||Y||-||Y|
|7.||Fujifilm GFX 50R||Y||stereo||mono||Y||Y||micro||3.0||Y||-||Y|
|9.||Fujifilm GFX 50S||Y||stereo||mono||Y||Y||micro||3.0||Y||-||-|
|12.||Panasonic LX100 II||Y||stereo||mono||-||-||micro||2.0||Y||-||Y|
It is notable that the GFX 100S has a microphone port, which is missing on the GX9. 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 Fujifilm GFX 100S (unlike the GX9) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the GFX 100S and the GX9 are recent models that are part of the current product line-up. The GX9 replaced the earlier Panasonic GX8, while the GFX 100S followed on from the Fujifilm GFX 100. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Fujifilm and Panasonic websites.
So what conclusions can be drawn? Is the Fujifilm GFX 100S better than the Panasonic GX9 or vice versa? The listing below highlights the relative strengths of the two models.
Advantages of the Fujifilm GFX 100S:
- More detail: Offers more megapixels (101.8 vs 20.2MP) with a 125% higher linear resolution.
- Better image quality: Features a larger and more technologically advanced imaging sensor.
- Richer colors: The sensor size advantage translates into images with better, more accurate colors.
- More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
- Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- Better sound: Can connect to an external microphone for higher quality sound recording.
- Better sound control: Has a headphone port that enables audio monitoring while recording.
- More detailed viewfinder: Has higher resolution electronic viewfinder (3690k vs 2760k dots).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.77x vs 0.70x).
- Easier setting verification: Features an LCD display on top to control shooting parameters.
- Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (2360k vs 1240k dots).
- More flexible LCD: Has a full-flex screen for odd-angle shots in portrait or landscape orientation.
- Longer lasting: Can take more shots (460 versus 260) on a single battery charge.
- Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
- Faster data transfer: Supports a more advanced USB protocol (3.2 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.
- Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
- More modern: Reflects 2 years and 11 months of technical progress since the GX9 launch.
Arguments in favor of the Panasonic Lumix DC-GX9:
- Faster burst: Shoots at higher frequency (9 vs 5 flaps/sec) to capture the decisive moment.
- More compact: Is smaller (124x72mm vs 150x104mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 493g or 55 percent) and is thus easier to take along.
- Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
- More affordable: Was introduced into a lower priced category (86 percent cheaper at launch).
- More heavily discounted: Has been around for much longer (launched in February 2018).
If the number of relative strengths (bullet points above) is taken as a guide, the GFX 100S is the clear winner of the match-up (21 : 6 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. 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 Fujifilm GFX 100S and the Panasonic GX9 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 says little about, for example, the shooting experience and imaging performance of the GFX 100S and the GX9 in practical situations. 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.
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], 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.
|1.||Fujifilm GFX 100S||..||..||..||..||..||Jan 2021||5,999|
|2.||Panasonic GX9||4/5||+||84/100||4.5/5||4.5/5||Feb 2018||849|
|3.||Canon R5||4.5/5||..||91/100||4.5/5||4.5/5||Jul 2020||3,899|
|4.||Fujifilm X-T4||5/5||+ +||..||5/5||5/5||Feb 2020||1,699|
|5.||Fujifilm X-S10||5/5||..||86/100||4.5/5||4.5/5||Oct 2020||999|
|6.||Fujifilm GFX 100||4.5/5||+ +||90/100||5/5||4.5/5||May 2019||9,999|
|7.||Fujifilm GFX 50R||5/5||..||84/100||4.5/5||4.5/5||Sep 2018||4,499|
|8.||Fujifilm XP130||..||o||..||3.5/5||4/5||Jan 2018||229|
|9.||Fujifilm GFX 50S||..||..||85/100||5/5||4.5/5||Sep 2016||6,499|
|10.||Leica SL2-S||4/5||..||..||..||4.5/5||Dec 2020||4,895|
|11.||Leica SL2||4/5||..||..||4.5/5||4/5||Nov 2019||5,999|
|12.||Panasonic LX100 II||4.5/5||+||82/100||4.5/5||4.5/5||Aug 2018||999|
|13.||Panasonic TZ200||..||+ +||81/100||4.5/5||4.5/5||Feb 2018||799|
|14.||Panasonic GX80||4.5/5||+ +||82/100||5/5||5/5||Apr 2016||799|
|15.||Panasonic GX8||5/5||+||82/100||4.5/5||4.5/5||Jul 2015||1,199|
|16.||Panasonic GX7||4/5||+||79/100||5/5||5/5||Aug 2013||999|
|17.||Sony A1||..||..||..||..||..||Jan 2021||6,499|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The review scores listed above should be treated with care, though. The assessments were made in relation to similar cameras of the same technological generation. 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. Also, please note that some of the review sites have changed their methodology and reporting over time.
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.
Specifications: Fujifilm GFX 100S vs Panasonic GX9
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||Fujifilm GFX 100S||Panasonic GX9|
|Camera Type||Mirrorless system camera||Mirrorless system camera|
|Camera Lens||Fujifilm G mount lenses||Micro Four Thirds lenses|
|Launch Date||January 2021||February 2018|
|Launch Price||USD 5,999||USD 849|
|Sensor Specs||Fujifilm GFX 100S||Panasonic GX9|
|Sensor Format||Medium Format Sensor||Four Thirds Sensor|
|Sensor Size||43.8 x 32.9 mm||17.3 x 13.0 mm|
|Sensor Area||1441.02 mm2||224.9 mm2|
|Sensor Diagonal||54.8 mm||21.6 mm|
|Sensor Resolution||101.8 Megapixels||20.2 Megapixels|
|Image Resolution||11648 x 8736 pixels||5184 x 3888 pixels|
|Pixel Pitch||3.76 μm||3.34 μm|
|Pixel Density||7.06 MP/cm2||8.96 MP/cm2|
|Moiré control||no AA filter||no AA filter|
|Movie Capability||4K/30p Video||4K/30p Video|
|ISO Setting||100 - 12,800 ISO||200 - 25,600 ISO|
|ISO Boost||50 - 102,400 ISO||100 - 25,600 ISO|
|Image Processor||X-Processor 4||Venus|
|Screen Specs||Fujifilm GFX 100S||Panasonic GX9|
|Viewfinder Type||Electronic viewfinder||Electronic viewfinder|
|Viewfinder Field of View||100%||100%|
|Viewfinder Resolution||3690k dots||2760k dots|
|Top-Level Screen||Control Panel||no Top Display|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.2inch||3.0inch|
|LCD Resolution||2360k dots||1240k dots|
|LCD Attachment||Fully flexible screen||Tilting screen|
|Shooting Specs||Fujifilm GFX 100S||Panasonic GX9|
|Focus System||On-Sensor Phase-detect||Contrast-detect AF|
|Manual Focusing Aid||Focus Peaking||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/4000s|
|Continuous Shooting||5 shutter flaps/s||9 shutter flaps/s|
|Electronic Shutter||up to 1/16000s||up to 1/16000s|
|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||Fujifilm GFX 100S||Panasonic GX9|
|Studio Flash||PC Sync socket||no PC Sync|
|USB Connector||USB 3.2||USB 2.0|
|HDMI Port||micro HDMI||micro HDMI|
|Microphone Port||External MIC port||no MIC socket|
|Headphone Socket||Headphone port||no Headphone port|
|Wifi Support||Wifi built-in||Wifi built-in|
|Bluetooth Support||Bluetooth built-in||Bluetooth built-in|
|Body Specs||Fujifilm GFX 100S||Panasonic GX9|
|Environmental Sealing||Weathersealed body||not weather sealed|
|Battery Life (CIPA)||460 shots per charge||260 shots per charge|
|In-Camera Charging||USB charging||USB charging|
150 x 104 x 87 mm
(5.9 x 4.1 x 3.4 in)
124 x 72 x 47 mm
(4.9 x 2.8 x 1.9 in)
|Camera Weight||900 g (31.7 oz)||407 g (14.4 oz)|
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