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Fujifilm GFX 100S vs Sony A7S III

The Fujifilm GFX 100S and the Sony Alpha 7S III are two professional cameras that were revealed to the public, respectively, in January 2021 and July 2020. Both the GFX 100S and the A7S III are mirrorless interchangeable lens cameras that are based on a medium format (GFX 100S) and a full frame (A7S III) sensor. The Fujifilm has a resolution of 101.8 megapixels, whereas the Sony provides 12 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications
Fujifilm GFX 100S
versus
Sony A7S III
Fujifilm GFX 100S   Sony A7S III
Mirrorless system camera Mirrorless system camera
Fujifilm G mount lenses Sony E mount lenses
101.8 MP – Medium Format sensor 12 MP – Full Frame sensor
4K/30p Video 4K/120p Video
ISO 100-12,800 (50 - 102,400) ISO 80-102,400 (40 - 409,600)
Electronic viewfinder (3690k dots) Electronic viewfinder (9440k dots)
3.2" LCD – 2360k dots 3.0" LCD – 1440k dots
Fully flexible touchscreen Swivel touchscreen
5 shutter flaps per second 10 shutter flaps per second
In-body stabilizationIn-body stabilization
Weathersealed bodyWeathersealed body
460 shots per battery charge600 shots per battery charge
150 x 104 x 87 mm, 900 g 127 x 97 x 81 mm, 699 g
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Check GFX 100S price at
amazon.com
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Check A7S III price at
amazon.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Fujifilm GFX 100S and the Sony Alpha 7S III? 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.

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Body comparison

The side-by-side display below illustrates the physical size and weight of the Fujifilm GFX 100S and the Sony A7S III. 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 measures are rounded to the nearest millimeter.

Size Fujifilm GFX 100S vs Sony A7S III
Compare GFX 100S versus A7S III top
Comparison GFX 100S or A7S III rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7S III is notably smaller (21 percent) than the Fujifilm GFX 100S. Moreover, the A7S III is markedly lighter (22 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 Fujifilm NP-W235 battery, while the A7S III can take 600 images on a single charge of its Sony NP-FZ100 power pack. The battery packs of both cameras can be charged via USB, which can be very convenient when travelling.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.

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Body Specifications
# image Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Fujifilm GFX 100S 150 mm 104 mm 87 mm 900 g 460 Y Jan 2021 5,999 amazon.com
2.
 
Sony A7S III 127 mm 97 mm 81 mm 699 g 600 Y Jul 2020 3,499 amazon.com
3.
 
Canon R3 150 mm 143 mm 87 mm 1015 g 760 Y Sep 2021 5,999 amazon.com
4.
 
Fujifilm GFX 100 II 152 mm 117 mm 99 mm 1030 g 540 Y Sep 2023 7,499 amazon.com
5.
 
Fujifilm GFX 50S II 150 mm 104 mm 87 mm 900 g 440 Y Sep 2021 3,999 amazon.com
6.
 
Fujifilm GFX 100 156 mm 144 mm 75 mm 1320 g 800 Y May 2019 9,999ebay.com
7.
 
Fujifilm GFX 50R 161 mm 97 mm 66 mm 775 g 400 Y Sep 2018 4,499ebay.com
8.
 
Fujifilm GFX 50S 148 mm 94 mm 91 mm 740 g 400 Y Sep 2016 6,499ebay.com
9.
 
Hasselblad X2D 100C 149 mm 106 mm 75 mm 895 g 420 Y Sep 2022 8,199 amazon.com
10.
 
Hasselblad X1D II 148 mm 97 mm 70 mm 766 g .. Y Jun 2019 5,750ebay.com
11.
 
Leica SL2 146 mm 107 mm 42 mm 953 g 370 Y Nov 2019 5,999 amazon.com
12.
 
Sony A1 129 mm 97 mm 81 mm 737 g 530 Y Jan 2021 6,499 amazon.com
13.
 
Sony A7R IVA 129 mm 96 mm 78 mm 665 g 670 Y Apr 2021 3,499 amazon.com
14.
 
Sony A9 II 129 mm 96 mm 76 mm 678 g 690 Y Oct 2019 4,499 amazon.com
15.
 
Sony A7R IV 129 mm 96 mm 78 mm 665 g 670 Y Jul 2019 3,499ebay.com
16.
 
Sony A7R III 127 mm 96 mm 74 mm 650 g 650 Y Oct 2017 3,199ebay.com
17.
 
Sony A7S II 127 mm 96 mm 60 mm 627 g 370 Y Sep 2015 2,999ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
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The price is, of course, an important factor in any camera decision. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The A7S III was launched at a markedly lower price (by 42 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.

Sensor comparison

The size of the imaging sensor is a crucial determinant 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 Sony A7S III a full frame sensor. The sensor area in the A7S III 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 A7S III offers a 3:2 aspect.

Fujifilm GFX 100S and Sony A7S III sensor measures

With 101.8MP, the GFX 100S offers a higher resolution than the A7S III (12MP), but the GFX 100S has smaller individual pixels (pixel pitch of 3.76μm versus 8.40μm for the A7S III). However, the GFX 100S is a somewhat more recent model (by 6 months) than the A7S III, 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 the GFX 100S has no anti-alias filter installed, so that it can capture all the detail its 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 Sony A7S III are 21.2 x 14.2 inches or 53.8 x 36 cm for good quality, 17 x 11.3 inches or 43.1 x 28.8 cm for very good quality, and 14.1 x 9.4 inches or 35.9 x 24 cm for excellent quality prints.

Unlike the A7S III, the GFX 100S has the capacity to capture high quality composite images (YESMP) 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 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 Sony Alpha 7S III are ISO 80 to ISO 102400, with the possibility to increase the ISO range to 40-409600.

Technology-wise, both cameras are equipped with BSI-CMOS (Backside Illuminated Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

GFX 100S versus A7S III MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

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Sensor Characteristics
# image Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Fujifilm GFX 100S Medium Format 101.8 11648 87364K/30p25.814.73391100
2.
 
Sony A7S III Full Frame 12.0 4240 28324K/120p23.713.9252086
3.
 
Canon R3 Full Frame 24.0 6000 40006K/60p25.014.7408696
4.
 
Fujifilm GFX 100 II Medium Format 101.8 11648 87368K/30p25.915.03651101
5.
 
Fujifilm GFX 50S II Medium Format 51.1 8256 61921080/30p25.914.83456100
6.
 
Fujifilm GFX 100 Medium Format 101.8 11648 87364K/30p25.714.5322799
7.
 
Fujifilm GFX 50R Medium Format 51.1 8256 61921080/30p25.714.4316998
8.
 
Fujifilm GFX 50S Medium Format 51.1 8256 61921080/30p25.414.1297796
9.
 
Hasselblad X2D 100C Medium Format 102.1 11656 8762none25.914.93550101
10.
 
Hasselblad X1D II Medium Format 51.3 8272 62001080/25p25.714.5323499
11.
 
Leica SL2 Full Frame 46.7 8368 55844K/60p25.314.3286695
12.
 
Sony A1 Full Frame 49.8 8640 57608k/30p25.914.5316398
13.
 
Sony A7R IVA Full Frame 60.2 9504 63364K/30p26.014.8334499
14.
 
Sony A9 II Full Frame 24.0 6000 40004K/30p25.014.0343493
15.
 
Sony A7R IV Full Frame 60.2 9504 63364K/30p26.014.8334499
16.
 
Sony A7R III Full Frame 42.2 7952 53044K/30p26.014.73523100
17.
 
Sony A7S II Full Frame 12.0 4240 28324K/30p23.613.3299385
Note: DXO values in italics represent estimates based on sensor size and age.
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Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the A7S III provides a faster frame rate than the GFX 100S. It can shoot movie footage at 4K/120p, while the Fujifilm is limited to 4K/30p.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. The two cameras under review are similar with respect to both having an electronic viewfinder. However, the one in the A7S III offers a substantially higher resolution than the one in the GFX 100S (9440k vs 3690k dots). The table below summarizes some of the other core capabilities of the Fujifilm GFX 100S and Sony A7S III in connection with corresponding information for a sample of similar cameras.

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Core Features
# image Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Specifications
(inch/000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Max
Shutter
Speed *
Max
Shutter
Flaps *
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Fujifilm GFX 100S3690 Y3.2 / 2360 full-flex Y 1/4000s 5.0/s n Y
2.
 
Sony A7S III9440 n3.0 / 1440 swivel Y 1/8000s 10.0/s n Y
3.
 
Canon R35760 Y3.2 / 4150 swivel Y 1/8000s 12.0/s n Y
4.
 
Fujifilm GFX 100 II9440 Y3.2 / 2360 full-flex Y 1/4000s 8.0/s n Y
5.
 
Fujifilm GFX 50S II3690 Y3.2 / 2360 full-flex Y 1/4000s 3.0/s n Y
6.
 
Fujifilm GFX 100optional Y3.2 / 2360 full-flex Y 1/4000s 5.0/s n Y
7.
 
Fujifilm GFX 50R3690 n3.2 / 2360 tilting Y 1/4000s 3.0/s n n
8.
 
Fujifilm GFX 50Soptional Y3.2 / 2360 full-flex Y 1/4000s 3.0/s n n
9.
 
Hasselblad X2D 100C5760 Y3.6 / 2360 tilting Y 1/4000s 3.3/s n Y
10.
 
Hasselblad X1D II3690 n3.6 / 2360 fixed Y 1/2000s 2.7/s n n
11.
 
Leica SL25760 Y3.2 / 2100 fixed Y 1/8000s 10.0/s n Y
12.
 
Sony A19437 n3.0 / 1440 tilting Y 1/8000s 10.0/s n Y
13.
 
Sony A7R IVA5760 n3.0 / 2340 tilting Y 1/8000s 10.0/s n Y
14.
 
Sony A9 II3686 n3.0 / 1440 tilting Y 1/8000s 20.0/s n Y
15.
 
Sony A7R IV5760 n3.0 / 1440 tilting Y 1/8000s 10.0/s n Y
16.
 
Sony A7R III3686 n3.0 / 1440 tilting Y 1/8000s 10.0/s n Y
17.
 
Sony A7S II2400 n3.0 / 1229 tilting n 1/8000s 5.0/s n Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
padding

One feature that is present on the GFX 100S, but is missing on the A7S III 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 A7S III has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the GFX 100S 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 Fujifilm GFX 100S has 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 A7S III uses CFexpress (type A) or SDXC cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails. Moreover, both the GFX 100S and the A7S III support UHS-II cards, which provide for Ultra High Speed data transfer of up to 312 MB/s, on both slots.

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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 Fujifilm GFX 100S and Sony Alpha 7S III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
# image Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Fujifilm GFX 100SYstereo / monoYYmicro3.2Y-Y
2.
 
Sony A7S IIIYstereo / monoYYfull3.2Y-Y
3.
 
Canon R3Ystereo / monoYYmicro3.2Y-Y
4.
 
Fujifilm GFX 100 IIYstereo / monoYYfull3.2Y-Y
5.
 
Fujifilm GFX 50S IIYstereo / monoYYmicro3.2Y--
6.
 
Fujifilm GFX 100Ystereo / monoYYmicro3.1Y-Y
7.
 
Fujifilm GFX 50RYstereo / monoYYmicro3.0Y-Y
8.
 
Fujifilm GFX 50SYstereo / monoYYmicro3.0Y--
9.
 
Hasselblad X2D 100CYstereo / mono---3.2Y--
10.
 
Hasselblad X1D IIYstereo / monoYY-3.0Y--
11.
 
Leica SL2Ystereo / monoYYfull3.1Y-Y
12.
 
Sony A1Ystereo / monoYYfull3.2Y-Y
13.
 
Sony A7R IVAYstereo / monoYYmicro3.2YYY
14.
 
Sony A9 IIYstereo / monoYYmicro3.1YYY
15.
 
Sony A7R IVYstereo / monoYYmicro3.1YYY
16.
 
Sony A7R IIIYstereo / monoYYmicro3.1YYY
17.
 
Sony A7S IIYstereo / monoYYmicro2.0YY-
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Studio photographers will appreciate that the Fujifilm GFX 100S (unlike the A7S III) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the GFX 100S and the A7S III are recent models that are part of the current product line-up. The A7S III replaced the earlier Sony A7S II, while the GFX 100S followed on from the Fujifilm GFX 100. Further information on the features and operation of the GFX 100S and A7S III can be found, respectively, in the Fujifilm GFX 100S Manual (free pdf) or the online Sony A7S III Manual.

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Review summary

So what conclusions can be drawn? Is the Fujifilm GFX 100S better than the Sony A7S III or vice versa? A synthesis of the relative strong points of each of the models is listed below.

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Reasons to prefer the Fujifilm GFX 100S:

  • More detail: Offers more megapixels (101.8 vs 12MP) with a 186% 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 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.
  • 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 1440k dots).
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • More modern: Is somewhat more recent (announced 6 months after the A7S III).

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Advantages of the Sony Alpha 7S III:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better video: Provides higher movie framerates (4K/120p versus 4K/30p).
  • More detailed viewfinder: Has higher resolution electronic viewfinder (9440k vs 3690k dots).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.91x vs 0.77x).
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (10 vs 5 flaps/sec) to capture the decisive moment.
  • More compact: Is smaller (127x97mm vs 150x104mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 201g or 22 percent) and is thus easier to take along.
  • Longer lasting: Gets more shots (600 versus 460) out of a single battery charge.
  • 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 (42 percent cheaper at launch).
  • More heavily discounted: Has been on the market for longer (launched in July 2020).

If the count of relative strengths (bullet points above) is taken as a measure, the match-up finishes in a tie (13 points each). 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 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.

GFX 100S 13:13 A7S III

How about other alternatives? Do the specifications of the Fujifilm GFX 100S and the Sony A7S III 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 specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it says little about, for example, the shooting experience and imaging performance of the GFX 100S and the A7S III in practical situations. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.

Expert reviews

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 (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
# image  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Fujifilm GFX 100S5/5+ +5/590/1005/55/5 Jan 2021 5,999 amazon.com
2.
 
Sony A7S III4.5/5+ +5/591/1004.5/55/5 Jul 2020 3,499 amazon.com
3.
 
Canon R35/5o4.5/5..5/54.5/5 Sep 2021 5,999 amazon.com
4.
 
Fujifilm GFX 100 II5/5+5/5....4.5/5 Sep 2023 7,499 amazon.com
5.
 
Fujifilm GFX 50S II5/5..5/587/100..5/5 Sep 2021 3,999 amazon.com
6.
 
Fujifilm GFX 1004.5/5+ +4.8/590/1005/54.5/5 May 2019 9,999ebay.com
7.
 
Fujifilm GFX 50R5/5..5/584/1004.5/54.5/5 Sep 2018 4,499ebay.com
8.
 
Fujifilm GFX 50S....4.5/585/1005/54.5/5 Sep 2016 6,499ebay.com
9.
 
Hasselblad X2D 100C4/5..5/5...... Sep 2022 8,199 amazon.com
10.
 
Hasselblad X1D II....4/5..4/54/5 Jun 2019 5,750ebay.com
11.
 
Leica SL24/5..4.5/5..4.5/54/5 Nov 2019 5,999 amazon.com
12.
 
Sony A15/5o4.5/593/1004.5/55/5 Jan 2021 6,499 amazon.com
13.
 
Sony A7R IVA5/5+4.5/591/1004.5/55/5 Apr 2021 3,499 amazon.com
14.
 
Sony A9 II....5/590/1005/55/5 Oct 2019 4,499 amazon.com
15.
 
Sony A7R IV5/5+4.5/591/1004.5/55/5 Jul 2019 3,499ebay.com
16.
 
Sony A7R III..+ +4/590/1004.5/55/5 Oct 2017 3,199ebay.com
17.
 
Sony A7S II5/5+....4.5/55/5 Sep 2015 2,999ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
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Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

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Check GFX 100S price at
amazon.com
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Check A7S III price at
amazon.com

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.

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    Specifications: Fujifilm GFX 100S vs Sony A7S III

    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 Fujifilm GFX 100S Sony A7S III
    Camera Type Mirrorless system camera Mirrorless system camera
    Camera Lens Fujifilm G mount lenses Sony E mount lenses
    Launch Date January 2021 July 2020
    Launch Price USD 5,999 USD 3,499
    Sensor Specs Fujifilm GFX 100S Sony A7S III
    Sensor Technology BSI-CMOS BSI-CMOS
    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
    Crop Factor 0.79x 1.0x
    Sensor Resolution 101.8 Megapixels 12 Megapixels
    Image Resolution 11648 x 8736 pixels 4240 x 2832 pixels
    Pixel Pitch 3.76 μm 8.40 μm
    Pixel Density 7.06 MP/cm2 1.42 MP/cm2
    Moiré control no AA filter Anti-Alias filter
    Movie Capability 4K/30p Video 4K/120p Video
    ISO Setting 100 - 12,800 ISO 80 - 102,400 ISO
    ISO Boost 50 - 102,400 ISO 40 - 409,600 ISO
    Image Processor X-Processor 4 BIONZ XR
    DXO Sensor Quality (score) .. 86
    DXO Color Depth (bits) .. 23.7
    DXO Dynamic Range (EV) .. 13.9
    DXO Low Light (ISO) .. 2520
    Screen Specs Fujifilm GFX 100S Sony A7S III
    Viewfinder Type Electronic viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.77x 0.91x
    Viewfinder Resolution 3690k dots 9440k 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 1440k dots
    LCD Attachment Fully flexible screen Swivel screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs Fujifilm GFX 100S Sony A7S III
    Focus System On-Sensor Phase-detect On-Sensor Phase-detect
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/8000s
    Continuous Shooting 5 shutter flaps/s 10 shutter flaps/s
    Electronic Shutterup to 1/16000sYES
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium SDXC cards CFexA or SDXC cards
    Single or Dual Card Slots Dual card slots Dual card slots
    UHS card support Dual UHS-II Dual UHS-II
    Connectivity Specs Fujifilm GFX 100S Sony A7S III
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 3.2 USB 3.2
    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 Sony A7S III
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type Fujifilm NP-W235 Sony NP-FZ100
    Battery Life (CIPA)460 shots per charge600 shots per charge
    In-Camera Charging USB charging USB charging
    Body Dimensions 150 x 104 x 87 mm
    (5.9 x 4.1 x 3.4 in)
    127 x 97 x 81 mm
    (5.0 x 3.8 x 3.2 in)
    Camera Weight 900 g (31.7 oz) 699 g (24.7 oz)
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