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Fujifilm GFX 100 vs Olympus E-M1 III

The Fujifilm GFX 100 and the Olympus OM-D E-M1 Mark III are two digital cameras that were officially introduced, respectively, in May 2019 and February 2020. Both the GFX 100 and the E-M1 III are mirrorless interchangeable lens cameras that are based on a medium format (GFX 100) and a Four Thirds (E-M1 III) sensor. The Fujifilm has a resolution of 101.8 megapixels, whereas the Olympus provides 20.2 MP.

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

Headline Specifications
Fujifilm GFX 100
versus
Olympus E-M1 III
Fujifilm GFX 100 Olympus E-M1 III
Mirrorless system camera Mirrorless system camera
Fujifilm G mount lenses Micro Four Thirds lenses
101.8 MP, Medium Format Sensor 20.2 MP, Four Thirds Sensor
4K/30p Video 4K/30p Video
ISO 100-12,800 (50 - 102,400) ISO 200-25,600
Viewfinder optional Electronic viewfinder (2360k dots)
3.2 LCD, 2360k dots 3.0 LCD, 1037k dots
Tilting touchscreen Swivel touchscreen
5 shutter flaps per second 18 shutter flaps per second
In-body stabilizationIn-body stabilization
Weathersealed bodyWeathersealed body
800 shots per battery charge420 shots per battery charge
156 x 144 x 75 mm, 1320 g 134 x 91 x 69 mm, 580 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Fujifilm GFX 100 and the Olympus OM-D E-M1 Mark 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.

Body comparison

The physical size and weight of the Fujifilm GFX 100 and the Olympus E-M1 III are illustrated 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 dimensions are rounded to the nearest millimeter.

Size Fujifilm GFX 100 vs Olympus E-M1 III
Compare GFX 100 versus E-M1 III top
Comparison GFX 100 or E-M1 III rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-M1 III is considerably smaller (46 percent) than the Fujifilm GFX 100. Moreover, the E-M1 III is substantially lighter (56 percent) than the GFX 100. 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 100 gets 800 shots out of its NP-T125 battery, while the E-M1 III can take 420 images on a single charge of its BLH-1 power pack. As can be seen in the images above, the GFX 100 has a battery grip built in. This facilitates image-taking in portrait orientation and gives it additional battery power. In order to provide similar functionality for the E-M1 III, Olympus provides the HLD-9 vertical grip as an optional accessory (see here on eBay). 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 want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

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Body Specifications
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Fujifilm GFX 100 156 mm 144 mm 75 mm 1320 g 800 Y May 2019 9,999 i
2.
 
Olympus E-M1 III 134 mm 91 mm 69 mm 580 g 420 Y Feb 2020 1,799 i
3.
 
Fujifilm GFX 100S 150 mm 104 mm 87 mm 900 g 460 Y Jan 2021 5,999 i
4.
 
Fujifilm X-T4 135 mm 93 mm 64 mm 607 g 500 Y Feb 2020 1,699 i
5.
 
Fujifilm XP140 110 mm 71 mm 28 mm 207 g 240 Y Feb 2019 229 i
6.
 
Fujifilm X-H1 140 mm 97 mm 86 mm 673 g 310 Y Feb 2018 1,899 i
7.
 
Fujifilm GFX 50R 161 mm 97 mm 66 mm 775 g 400 Y Sep 2018 4,499 i
8.
 
Fujifilm GFX 50S 148 mm 94 mm 91 mm 740 g 400 Y Sep 2016 6,499 i
9.
 
Olympus E-M5 III 125 mm 85 mm 50 mm 414 g 310 Y Oct 2019 1,199 i
10.
 
Olympus E-M1X 144 mm 147 mm 75 mm 997 g 870 Y Jan 2019 2,999 i
11.
 
Olympus E-M1 II 134 mm 91 mm 67 mm 574 g 440 Y Sep 2016 1,999 i
12.
 
Panasonic G95 130 mm 94 mm 77 mm 536 g 290 Y Apr 2019 999 i
13.
 
Panasonic G9 137 mm 97 mm 92 mm 658 g 400 Y Nov 2017 1,699 i
14.
 
Pentax K-1 II 137 mm 110 mm 86 mm 1010 g 670 Y Feb 2018 1,999 i
15.
 
Pentax 645Z 156 mm 117 mm 123 mm 1550 g 650 Y Apr 2014 8,499 i
16.
 
Pentax 645D 156 mm 117 mm 119 mm 1480 g 800 Y Mar 2010 9,995 i
17.
 
Sony A7 III 127 mm 96 mm 74 mm 650 g 610 Y Feb 2018 1,999 i
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

The price is, of course, an important factor in any camera decision. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The E-M1 III was launched at a markedly lower price (by 82 percent) than the GFX 100, 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.

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Sensor comparison

The size of the sensor inside a digital camera is one of the key determinants 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. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the background. On the downside, larger sensors are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Fujifilm GFX 100 features a medium format sensor and the Olympus E-M1 III a Four Thirds sensor. The sensor area in the E-M1 III 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.

Fujifilm GFX 100 and Olympus E-M1 III sensor measures

With 101.8MP, the GFX 100 offers a higher resolution than the E-M1 III (20.2MP), but the GFX 100 nevertheless has larger individual pixels (pixel pitch of 3.76μm versus 3.34μm for the E-M1 III) due to its larger sensor. However, the E-M1 III is a somewhat more recent model (by 8 months) than the GFX 100, 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 100 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the GFX 100 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 Olympus E-M1 III are 25.9 x 19.4 inches or 65.8 x 49.4 cm for good quality, 20.7 x 15.6 inches or 52.7 x 39.5 cm for very good quality, and 17.3 x 13 inches or 43.9 x 32.9 cm for excellent quality prints.

Unlike the GFX 100, the E-M1 III has the capacity to capture high quality composite images (80MP) 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 100 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 Olympus OM-D E-M1 Mark III are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 64-25600.

GFX 100 versus E-M1 III MP

For many cameras, data on sensor performance has been reported by DXO Mark. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

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Sensor Characteristics
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Fujifilm GFX 100 Medium Format 101.8 11648 87364K/30p...... ..
2.
 
Olympus E-M1 III Four Thirds 20.2 5184 38884K/30p...... ..
3.
 
Fujifilm GFX 100S Medium Format 101.8 11648 87364K/30p...... ..
4.
 
Fujifilm X-T4 APS-C 26.0 6240 41604K/60p...... ..
5.
 
Fujifilm XP140 1/2.3 15.9 4608 34564K/15p...... ..
6.
 
Fujifilm X-H1 APS-C 24.0 6000 40004K/30p...... ..
7.
 
Fujifilm GFX 50R Medium Format 51.1 8256 61921080/30p...... ..
8.
 
Fujifilm GFX 50S Medium Format 51.1 8256 61921080/30p...... ..
9.
 
Olympus E-M5 III Four Thirds 20.2 5184 38884K/30p...... ..
10.
 
Olympus E-M1X Four Thirds 20.2 5184 38884K/30p...... ..
11.
 
Olympus E-M1 II Four Thirds 20.2 5184 38884K/30p23.712.81312 80
12.
 
Panasonic G95 Four Thirds 20.2 5184 38884K/30p...... ..
13.
 
Panasonic G9 Four Thirds 20.2 5184 38884K/60p...... ..
14.
 
Pentax K-1 II Full Frame 36.2 7360 49121080/60i...... ..
15.
 
Pentax 645Z Medium Format 51.1 8256 61921080/60i26.014.74505 101
16.
 
Pentax 645D Medium Format 39.5 7264 5440none24.612.61262 82
17.
 
Sony A7 III Full Frame 24.0 6000 40004K/30p25.014.73730 96

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, and both provide the same movie specifications (4K/30p).

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Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the E-M1 III has an electronic viewfinder (2360k dots), which can be very helpful when shooting in bright sunlight. In contrast, the GFX 100 relies on live view and the rear LCD for framing. That said, the GFX 100 can be equipped with an optional viewfinder – the EVF-GFX2. The following table reports on some other key feature differences and similarities of the Fujifilm GFX 100, the Olympus E-M1 III, and comparable cameras.

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Core Features
    Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
(000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Fujifilm GFX 100optional Y 3.2 2360 tilting Y 1/4000s 5.0 n Y
2.
 
Olympus E-M1 III2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
3.
 
Fujifilm GFX 100S3690 Y 3.2 2360 full-flex Y 1/4000s 5.0 n Y
4.
 
Fujifilm X-T43690 n 3.0 1620 swivel Y 1/8000s 15.0 n Y
5.
 
Fujifilm XP140none n 3.0 920 fixed n 1/2000s 10.0 Y Y
6.
 
Fujifilm X-H13690 Y 3.0 1040 full-flex Y 1/8000s 14.0 n Y
7.
 
Fujifilm GFX 50R3690 n 3.2 2360 tilting Y 1/4000s 3.0 n n
8.
 
Fujifilm GFX 50Soptional Y 3.2 2360 full-flex Y 1/4000s 3.0 n n
9.
 
Olympus E-M5 III2360 n 3.0 1040 swivel Y 1/8000s 10.0 n Y
10.
 
Olympus E-M1X2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
11.
 
Olympus E-M1 II2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
12.
 
Panasonic G952360 n 3.0 1240 swivel Y 1/4000s 9.0 Y Y
13.
 
Panasonic G93680 Y 3.0 1040 swivel Y 1/8000s 20.0 n Y
14.
 
Pentax K-1 IIoptical Y 3.2 1037 full-flex n 1/8000s 4.4 n Y
15.
 
Pentax 645Zoptical Y 3.2 1037 tilting n 1/4000s 3.0 n n
16.
 
Pentax 645Doptical Y 3.0 921 fixed n 1/4000s 1.1 n n
17.
 
Sony A7 III2359 n 3.0 922 tilting Y 1/8000s 10.0 n Y

One feature that is present on the GFX 100, but is missing on the E-M1 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 E-M1 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 100 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 100 and the Olympus E-M1 III 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 100 and the E-M1 III write their files to SDXC cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails. However, while the GFX 100 supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s) on both slots, the E-M1 III supports UHS-II only on its first slot and UHS-I (data transfer speed up to 104 MB/s) on the second one.

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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 100 and Olympus OM-D E-M1 Mark 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
    Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Fujifilm GFX 100YstereomonoYYmicro3.1Y-Y
2.
 
Olympus E-M1 IIIYstereomonoYYmicro3.1Y-Y
3.
 
Fujifilm GFX 100SYstereomonoYYmicro3.2Y-Y
4.
 
Fujifilm X-T4YstereomonoY-micro3.1Y-Y
5.
 
Fujifilm XP140-monomono--micro2.0Y-Y
6.
 
Fujifilm X-H1YstereomonoY-micro3.0Y--
7.
 
Fujifilm GFX 50RYstereomonoYYmicro3.0Y-Y
8.
 
Fujifilm GFX 50SYstereomonoYYmicro3.0Y--
9.
 
Olympus E-M5 IIIYstereomonoY-micro2.0Y-Y
10.
 
Olympus E-M1XYstereomonoYYmicro3.0Y-Y
11.
 
Olympus E-M1 IIYstereomonoYYmicro3.0Y--
12.
 
Panasonic G95YstereomonoYYmicro2.0Y-Y
13.
 
Panasonic G9YstereomonoYYfull3.0Y-Y
14.
 
Pentax K-1 IIYstereomonoYYmicro2.0Y--
15.
 
Pentax 645ZYstereomonoY-mini3.0---
16.
 
Pentax 645DYstereo----2.0---
17.
 
Sony A7 IIIYstereomonoYYmicro3.1YYY

Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.

Both the GFX 100 and the E-M1 III are recent models that are part of the current product line-up. The E-M1 III replaced the earlier Olympus E-M1 II, while the GFX 100 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 Olympus websites.

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Review summary

So how do things add up? Is the Fujifilm GFX 100 better than the Olympus E-M1 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 100:

  • More detail: Offers more megapixels (101.8 vs 20.2MP) with a 125% higher linear resolution.
  • Better image quality: Features bigger pixels on a larger sensor for higher quality imaging.
  • Richer colors: The pixel size advantage translates into images with better, more accurate colors.
  • More dynamic range: Larger pixels capture a wider spectrum of light and dark details.
  • Better low-light sensitivity: Larger pixels means good image quality even under poor lighting.
  • 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 1037k dots).
  • More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
  • Longer lasting: Can take more shots (800 versus 420) on a single battery charge.
  • More heavily discounted: Has been on the market for longer (launched in May 2019).

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Arguments in favor of the Olympus OM-D E-M1 Mark III:

  • High quality composites: Can combine several shots after pixel-shifting its sensor.
  • Easier framing: Has an electronic viewfinder for image composition and settings control.
  • 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 shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (18 vs 5 flaps/sec) to capture the decisive moment.
  • More compact: Is smaller (134x91mm vs 156x144mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 740g or 56 percent) and is thus easier to take along.
  • More affordable: Was introduced into a lower priced category (82 percent cheaper at launch).
  • More modern: Was introduced somewhat (8 months) more recently.

If the number of relative strengths (bullet points above) is taken as a guide, the GFX 100 comes out slightly ahead of the E-M1 III (11 : 10 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision 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.

GFX 100 11:10 E-M1 III

How about other alternatives? Do the specifications of the Fujifilm GFX 100 and the Olympus E-M1 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 comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the GFX 100 or the E-M1 III. 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 expert reviews 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], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.

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Expert Camera Reviews
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Fujifilm GFX 1004.5/5+ +90/1005/54.5/5 May 2019 9,999 i
2.
 
Olympus E-M1 III5/5..83/1004.5/54/5 Feb 2020 1,799 i
3.
 
Fujifilm GFX 100S5/5..90/100..5/5 Jan 2021 5,999 i
4.
 
Fujifilm X-T45/5+ +..5/55/5 Feb 2020 1,699 i
5.
 
Fujifilm XP140..+..3.5/54/5 Feb 2019 229 i
6.
 
Fujifilm X-H1..+86/1004.5/54.5/5 Feb 2018 1,899 i
7.
 
Fujifilm GFX 50R5/5..84/1004.5/54.5/5 Sep 2018 4,499 i
8.
 
Fujifilm GFX 50S....85/1005/54.5/5 Sep 2016 6,499 i
9.
 
Olympus E-M5 III5/5+82/1004.5/54.5/5 Oct 2019 1,199 i
10.
 
Olympus E-M1X4.5/5o..4.5/5.. Jan 2019 2,999 i
11.
 
Olympus E-M1 II5/5+ +85/1004.5/54.5/5 Sep 2016 1,999 i
12.
 
Panasonic G954.5/5+83/1004.5/54.5/5 Apr 2019 999 i
13.
 
Panasonic G9..+ +85/1005/55/5 Nov 2017 1,699 i
14.
 
Pentax K-1 II....79/1004.5/54.5/5 Feb 2018 1,999 i
15.
 
Pentax 645Z5/5....4.5/55/5 Apr 2014 8,499 i
16.
 
Pentax 645D5/5........ Mar 2010 9,995 i
17.
 
Sony A7 III..+ +89/1005/55/5 Feb 2018 1,999 i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. 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.

Fujifilm GFX 100:
Check Amazon price
Olympus E-M1 III:
Check Amazon price

Other camera comparisons

Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just use the search menu below. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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    Specifications: Fujifilm GFX 100 vs Olympus E-M1 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 100 Olympus E-M1 III
    Camera Type Mirrorless system camera Mirrorless system camera
    Camera Lens Fujifilm G mount lenses Micro Four Thirds lenses
    Launch Date May 2019 February 2020
    Launch Price USD 9,999 USD 1,799
    Sensor Specs Fujifilm GFX 100 Olympus E-M1 III
    Sensor Technology BSI-CMOS CMOS
    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
    Crop Factor 0.79x 2.0x
    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 64 - 25,600 ISO
    Image Processor X-Processor 4 TruePic IX
    Screen Specs Fujifilm GFX 100 Olympus E-M1 III
    Viewfinder Type Viewfinder optional Electronic viewfinder
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.74x
    Viewfinder Resolution 2360k 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 1037k dots
    LCD Attachment Tilting screen Swivel screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs Fujifilm GFX 100 Olympus E-M1 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 18 shutter flaps/s
    Electronic Shutterup to 1/16000sup to 1/32000s
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium SDXC cards SDXC cards
    Second Storage Option Dual card slots Dual card slots
    UHS card support Dual UHS-II Single UHS-II
    Connectivity Specs Fujifilm GFX 100 Olympus E-M1 III
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket PC Sync socket
    USB Connector USB 3.1 USB 3.1
    HDMI Port micro HDMI micro 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 100 Olympus E-M1 III
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type NP-T125 BLH-1
    Battery Life (CIPA)800 shots per charge420 shots per charge
    In-Camera Charging USB charging USB charging
    Body Dimensions 156 x 144 x 75 mm
    (6.1 x 5.7 x 3.0 in)
    134 x 91 x 69 mm
    (5.3 x 3.6 x 2.7 in)
    Camera Weight 1320 g (46.6 oz) 580 g (20.5 oz)

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