Fujifilm GFX 100S vs Panasonic S1
The Fujifilm GFX 100S and the Panasonic Lumix DC-S1 are two digital cameras that were announced, respectively, in January 2021 and February 2019. Both the GFX 100S and the S1 are mirrorless interchangeable lens cameras that are based on a medium format (GFX 100S) and a full frame (S1) sensor. The Fujifilm has a resolution of 101.8 megapixels, whereas the Panasonic provides 24 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-S1? 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 Fujifilm GFX 100S and the Panasonic S1 is provided 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 dimensions are rounded to the nearest millimeter.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic S1 is somewhat larger (5 percent) than the Fujifilm GFX 100S. Moreover, the S1 is markedly heavier (13 percent) than the GFX 100S. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.
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 S1 can take 400 images on a single charge of its DMW-BLJ31 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 S1||149 mm||110 mm||97 mm||1017 g||400||Y||Feb 2019||2,499|
|3.||Canon R5||138 mm||98 mm||88 mm||738 g||320||Y||Jul 2020||3,899|
|4.||Canon R6||138 mm||98 mm||88 mm||680 g||360||Y||Jul 2020||2,499|
|5.||Fujifilm X-T4||135 mm||93 mm||64 mm||607 g||500||Y||Feb 2020||1,699|
|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 GFX 50S||148 mm||94 mm||91 mm||740 g||400||Y||Sep 2016||6,499|
|9.||Hasselblad X1D II||148 mm||97 mm||70 mm||766 g||..||Y||Jun 2019||5,750|
|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 S5||133 mm||98 mm||82 mm||714 g||440||Y||Sep 2020||1,999|
|13.||Panasonic S1R||149 mm||110 mm||97 mm||1016 g||380||Y||Feb 2019||3,699|
|14.||Panasonic S1H||151 mm||114 mm||110 mm||1052 g||400||Y||May 2019||3,999|
|15.||Pentax K-3 III||135 mm||104 mm||74 mm||820 g||800||Y||Mar 2021||1,999|
|16.||Sony A1||129 mm||97 mm||81 mm||737 g||530||Y||Jan 2021||6,499|
|17.||Sony A900||156 mm||117 mm||82 mm||895 g||880||Y||Sep 2008||2,999|
|Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
Any camera decision will obviously take relative prices into account. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The S1 was launched at a markedly lower price (by 58 percent) than the GFX 100S, 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.
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 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. 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 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 S1 a full frame sensor. The sensor area in the S1 is 41 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 0.79 and 1.0. The sensor in the GFX 100S has a native 4:3 aspect ratio, while the one in the S1 offers a 3:2 aspect.
With 101.8MP, the GFX 100S offers a higher resolution than the S1 (24MP), but the GFX 100S has smaller individual pixels (pixel pitch of 3.76μm versus 5.94μm for the S1). However, the GFX 100S is a somewhat more recent model (by 1 year and 11 months) than the S1, and its sensor might have benefitted from technological advances during this time that 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 S1 are 30 x 20 inches or 76.2 x 50.8 cm for good quality, 24 x 16 inches or 61 x 40.6 cm for very good quality, and 20 x 13.3 inches or 50.8 x 33.9 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.
Both cameras have the capacity to capture high quality composite images by combining multiple shots after shifting the sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).
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-S1 are ISO 100 to ISO 51200, with the possibility to increase the ISO range to 50-204800.
Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
| DXO |
|1.||Fujifilm GFX 100S||Medium Format||101.8||11648||8736||4K/30p||..||..||..||..|
|2.||Panasonic S1||Full Frame||24.0||6000||4000||4K/60p||25.2||14.5||3333||95|
|3.||Canon R5||Full Frame||44.8||8192||5464||8k/30p||25.3||14.6||3042||95|
|4.||Canon R6||Full Frame||20.0||5472||3648||4k/60p||24.2||14.3||3394||90|
|6.||Fujifilm GFX 100||Medium Format||101.8||11648||8736||4K/30p||..||..||..||..|
|7.||Fujifilm GFX 50R||Medium Format||51.1||8256||6192||1080/30p||..||..||..||..|
|8.||Fujifilm GFX 50S||Medium Format||51.1||8256||6192||1080/30p||..||..||..||..|
|9.||Hasselblad X1D II||Medium Format||51.3||8272||6200||none||..||..||..||..|
|10.||Leica SL2-S||Full Frame||24.0||6000||4000||4K/60p||25.2||14.1||3504||95|
|11.||Leica SL2||Full Frame||46.7||8368||5584||4K/60p||..||..||..||..|
|12.||Panasonic S5||Full Frame||24.0||6000||4000||4K/60p||..||..||..||..|
|13.||Panasonic S1R||Full Frame||46.7||8368||5584||4K/60p||26.4||14.1||3525||100|
|14.||Panasonic S1H||Full Frame||24.0||6000||4000||6K/30p||..||..||..||..|
|15.||Pentax K-3 III||APS-C||25.6||6192||4128||4K/30p||..||..||..||..|
|16.||Sony A1||Full Frame||49.8||8640||5760||8k/30p||..||..||..||..|
|17.||Sony A900||Full Frame||24.4||6048||4032||none||23.7||12.3||1431||79|
Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the S1 provides a faster frame rate than the GFX 100S. It can shoot movie footage at 4K/60p, while the Fujifilm is limited to 4K/30p.
Apart from body and sensor, cameras can and do differ across a range of features. The two cameras under review are similar with respect to both having an electronic viewfinder. However, the one in the S1 offers a substantially higher resolution than the one in the GFX 100S (5760k vs 3690k dots). The following table reports on some other key feature differences and similarities of the Fujifilm GFX 100S, the Panasonic S1, and comparable cameras.
|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|
|8.||Fujifilm GFX 50S||optional||Y||3.2||2360||full-flex||Y||1/4000s||3.0||n||n|
|9.||Hasselblad X1D II||3690||n||3.6||2360||fixed||Y||1/2000s||2.7||n||n|
|15.||Pentax K-3 III||optical||Y||3.2||1620||fixed||Y||1/8000s||12.0||n||Y|
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 S1 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.
The GFX 100S writes its imaging data to SDXC cards, while the S1 uses SDHC or XQD cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails. Both cameras support UHS-II cards, which provide for Ultra High Speed data transfer of up to 312 MB/s.
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-S1 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|
|8.||Fujifilm GFX 50S||Y||stereo||mono||Y||Y||micro||3.0||Y||-||-|
|9.||Hasselblad X1D II||Y||stereo||mono||Y||Y||-||3.0||Y||-||-|
|15.||Pentax K-3 III||Y||stereo||mono||Y||Y||micro||3.2||Y||-||Y|
Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.
Both the GFX 100S and the S1 are recent models that are part of the current product line-up. The GFX 100S replaced the earlier Fujifilm GFX 100, while the S1 does not have a direct predecessor. 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 how do things add up? Is the Fujifilm GFX 100S better than the Panasonic S1 or vice versa? A synthesis of the relative strong points of each of the models is listed below.
Reasons to prefer the Fujifilm GFX 100S:
- More detail: Offers more megapixels (101.8 vs 24MP) with a 102% 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.
- More detailed LCD: Has a higher resolution rear screen (2360k vs 2100k dots).
- Less heavy: Is lighter (by 117g or 12 percent) and hence easier to carry around.
- Longer lasting: Can take more shots (460 versus 400) on a single battery charge.
- Faster data transfer: Supports a more advanced USB protocol (3.2 vs 3.1).
- More modern: Is somewhat more recent (announced 1 year and 11 months after the S1).
Arguments in favor of the Panasonic Lumix DC-S1:
- Better video: Provides higher movie framerates (4K/60p versus 4K/30p).
- More detailed viewfinder: Has higher resolution electronic viewfinder (5760k vs 3690k dots).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.77x).
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (9 vs 5 flaps/sec) to capture the decisive moment.
- More solid recording: Has a full-sized HDMI port for a sturdy connection to an external recorder.
- More affordable: Was introduced into a lower priced category (58 percent cheaper at launch).
- More heavily discounted: Has been on the market for longer (launched in February 2019).
If the number of relative strengths (bullet points above) is taken as a guide, the GFX 100S emerges as the winner of the contest (11 : 8 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 sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape 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 S1 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 the spec-sheets of cameras can offer a general idea of their imaging potential, it says little about, for example, the shooting experience and imaging performance of the GFX 100S and the S1 in practical situations. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.
This is why hands-on reviews by experts are important. The adjacent summary-table relays the overall verdicts of several of the most popular camera 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||5/5||..||90/100||..||5/5||Jan 2021||5,999|
|2.||Panasonic S1||4.5/5||+ +||88/100||4.5/5||4/5||Feb 2019||2,499|
|3.||Canon R5||4.5/5||..||91/100||4.5/5||4.5/5||Jul 2020||3,899|
|4.||Canon R6||5/5||+ +||90/100||4.5/5||5/5||Jul 2020||2,499|
|5.||Fujifilm X-T4||5/5||+ +||..||5/5||5/5||Feb 2020||1,699|
|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 GFX 50S||..||..||85/100||5/5||4.5/5||Sep 2016||6,499|
|9.||Hasselblad X1D II||..||..||..||4/5||4/5||Jun 2019||5,750|
|10.||Leica SL2-S||4/5||..||..||4.5/5||4.5/5||Dec 2020||4,895|
|11.||Leica SL2||4/5||..||..||4.5/5||4/5||Nov 2019||5,999|
|12.||Panasonic S5||4.5/5||+ +||88/100||4.5/5||4.5/5||Sep 2020||1,999|
|13.||Panasonic S1R||4.5/5||..||89/100||4.5/5||4.5/5||Feb 2019||3,699|
|14.||Panasonic S1H||..||..||90/100||..||..||May 2019||3,999|
|15.||Pentax K-3 III||..||..||..||..||..||Mar 2021||1,999|
|16.||Sony A1||5/5||o||93/100||4.5/5||5/5||Jan 2021||6,499|
|17.||Sony A900||..||+ +||+ +||4.5/5||5/5||Sep 2008||2,999|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The above review scores should be interpreted 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 comparing ratings of very distinct cameras or ones that are far apart in terms of their release date 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? In case you are interested in seeing how other cameras pair up, just make a corresponding selection in the search boxes 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 S1
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 S1|
|Camera Type||Mirrorless system camera||Mirrorless system camera|
|Camera Lens||Fujifilm G mount lenses||Leica L mount lenses|
|Launch Date||January 2021||February 2019|
|Launch Price||USD 5,999||USD 2,499|
|Sensor Specs||Fujifilm GFX 100S||Panasonic S1|
|Sensor Format||Medium Format Sensor||Full Frame Sensor|
|Sensor Size||43.8 x 32.9 mm||35.6 x 23.8 mm|
|Sensor Area||1441.02 mm2||847.28 mm2|
|Sensor Diagonal||54.8 mm||42.8 mm|
|Sensor Resolution||101.8 Megapixels||24 Megapixels|
|Image Resolution||11648 x 8736 pixels||6000 x 4000 pixels|
|Pixel Pitch||3.76 μm||5.94 μm|
|Pixel Density||7.06 MP/cm2||2.83 MP/cm2|
|Moiré control||no AA filter||no AA filter|
|Movie Capability||4K/30p Video||4K/60p Video|
|ISO Setting||100 - 12,800 ISO||100 - 51,200 ISO|
|ISO Boost||50 - 102,400 ISO||50 - 204,800 ISO|
|Image Processor||X-Processor 4||Venus|
|DXO Sensor Quality (score)||..||95|
|DXO Color Depth (bits)||..||25.2|
|DXO Dynamic Range (EV)||..||14.5|
|DXO Low Light (ISO)||..||3333|
|Screen Specs||Fujifilm GFX 100S||Panasonic S1|
|Viewfinder Type||Electronic viewfinder||Electronic viewfinder|
|Viewfinder Field of View||100%||100%|
|Viewfinder Resolution||3690k dots||5760k dots|
|Top-Level Screen||Control Panel||Control Panel|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.2inch||3.2inch|
|LCD Resolution||2360k dots||2100k dots|
|LCD Attachment||Fully flexible screen||Fully flexible screen|
|Shooting Specs||Fujifilm GFX 100S||Panasonic S1|
|Focus System||On-Sensor Phase-detect||Contrast-detect AF|
|Manual Focusing Aid||Focus Peaking||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/8000s|
|Continuous Shooting||5 shutter flaps/s||9 shutter flaps/s|
|Electronic Shutter||up to 1/16000s||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||no On-Board Flash|
|Storage Medium||SDXC cards||SDXC or XQD cards|
|Second Storage Option||Dual card slots||Dual card slots|
|UHS card support||Dual UHS-II||UHS-II|
|Connectivity Specs||Fujifilm GFX 100S||Panasonic S1|
|Studio Flash||PC Sync socket||PC Sync socket|
|USB Connector||USB 3.2||USB 3.1|
|HDMI Port||micro HDMI||full HDMI|
|Microphone Port||External MIC port||External MIC port|
|Headphone Socket||Headphone port||Headphone port|
|Wifi Support||Wifi built-in||Wifi built-in|
|Bluetooth Support||Bluetooth built-in||Bluetooth built-in|
|Body Specs||Fujifilm GFX 100S||Panasonic S1|
|Environmental Sealing||Weathersealed body||Weathersealed body|
|Battery Life (CIPA)||460 shots per charge||400 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)
149 x 110 x 97 mm
(5.9 x 4.3 x 3.8 in)
|Camera Weight||900 g (31.7 oz)||1017 g (35.9 oz)|
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