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Fujifilm X100F versus Sony A7R III

The Fujifilm X100F and the Sony Alpha A7R III are two enthusiast cameras that were revealed to the public, respectively, in January 2017 and October 2017. The X100F is a fixed lens compact, while the A7R III is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (X100F) and a full frame (A7R III) sensor. The Fujifilm has a resolution of 24 megapixel, whereas the Sony provides 42.2 MP. Read on to find out how these two cameras compare with respect to their size, their sensors, their features, and their reception by expert reviewers.

Body comparison: Fujifilm X100F vs Sony A7R III

An illustration of the physical size and weight of the Fujifilm X100F and the Sony A7R III 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 you prefer, you can also use the toggle button to switch to a comparison in percentage terms (in this case, the camera on the left side – the X100F – represents the basis for the calculations across all the size and weight measures).

Compare Fujifilm X100F vs Sony A7R III
Compare X100F versus A7R III top
Compare X100F and A7R III rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7R III is notably larger (28 percent) than the Fujifilm X100F. It is noteworthy in this context that the A7R III is splash and dust-proof, while the X100F does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the X100F has a lens build in, whereas the A7R III is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can find an overview of optics for the A7R III and their specifications in the Sony FE Lens Catalog.

Concerning battery life, the X100F gets 390 shots out of its NP-W126S battery, while the A7R III can take 650 images on a single charge of its NP-FZ100 power pack.

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, just click on the right or left arrow next to the camera that you would like to inspect. Alternatively, you can also use the CAM-parator to select your camera combination among a larger number of options.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
Fujifilm X100F» 5.0 in 3.0 in 2.0 in 16.5 oz 390 n Jan 2017 1,299 i i Fujifilm X100F
Sony A7R III« 5.0 in 3.8 in 2.9 in 22.9 oz 650 Y Oct 2017 3,199 i i Sony A7R III
Canon 77D« » 5.2 in 3.9 in 3.0 in 19.0 oz 600 n Feb 2017 899 i i Canon 77D
Canon G1 X Mark III« » 4.5 in 3.1 in 2.0 in 14.1 oz 200 Y Oct 2017 1,299 i i Canon G1 X Mark III
Fujifilm XF10« » 4.4 in 2.5 in 1.6 in 9.8 oz 330 n Jul 2018 499 i i Fujifilm XF10
Fujifilm X-T3« » 5.2 in 3.7 in 2.3 in 19.0 oz 390 Y Sep 2018 1,499 i i Fujifilm X-T3
Fujifilm X-T100« » 4.8 in 3.3 in 1.9 in 15.8 oz 430 n May 2018 599 i i Fujifilm X-T100
Fujifilm X100T« » 5.0 in 2.9 in 2.0 in 15.5 oz 330 n Sep 2014 1,299- i Fujifilm X100T
Fujifilm X100S« » 5.0 in 2.9 in 2.1 in 15.7 oz 330 n Jan 2013 1,299- i Fujifilm X100S
Fujifilm X100« » 5.0 in 3.0 in 2.1 in 15.7 oz 300 n Sep 2010 1,199- i Fujifilm X100
Panasonic FZ2000« » 5.4 in 4.0 in 5.3 in 32.3 oz 350 n Sep 2016 1,199 i i Panasonic FZ2000
Sony A7 III« » 5.0 in 3.8 in 2.9 in 22.9 oz 610 Y Feb 2018 1,999 i i Sony A7 III
Sony RX100 VI« » 4.0 in 2.3 in 1.7 in 10.6 oz 240 n Jun 2018 1,199 i i Sony RX100 VI
Sony A9« » 5.0 in 3.8 in 2.5 in 23.7 oz 650 Y Apr 2017 4,499 i i Sony A9
Sony A99 II« » 5.6 in 4.1 in 3.0 in 29.9 oz 490 Y Sep 2016 3,199 i i Sony A99 II
Sony A7R II« » 5.0 in 3.8 in 2.4 in 22.0 oz 290 Y Jun 2015 3,199- i Sony A7R II
Sony A7S II« » 5.0 in 3.8 in 2.4 in 22.1 oz 370 Y Sep 2015 2,999 i i Sony A7S II

Any camera purchase will naturally be influenced heavily by the price. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The X100F was launched at a lower price than the A7R III, despite having a lens build in. 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.

 

Sensor comparison: Fujifilm X100F vs Sony A7R III

The size of the sensor inside a digital camera is one of the key determinants 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 X100F features an APS-C sensor and the Sony A7R III a full frame sensor. The sensor area in the A7R III is 134 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Fujifilm X100F and Sony A7R III sensor measures

With 42.2MP, the A7R III offers a higher resolution than the X100F (24MP), but the A7R III nevertheless has larger individual pixels (pixel pitch of 4.52μm versus 3.92μm for the X100F) due to its larger sensor. Moreover, the A7R III is a somewhat more recent model (by 9 months) than the X100F, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units. 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.

Unlike the X100F, the A7R III has the capacity to capture high quality composite images 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).

X100F versus A7R 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 following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
Fujifilm X100F» APS-C 24.0 6000 40001080/60p----Fujifilm X100F
Sony A7R III« Full Frame 42.2 7952 53044K/30p26.014.73523100Sony A7R III
Canon 77D« » APS-C 24.0 6000 40001080/60p23.613.397178Canon 77D
Canon G1 X Mark III« » APS-C 24.0 6000 40001080/60p----Canon G1 X Mark III
Fujifilm XF10« » APS-C 24.0 6000 40004K/15p----Fujifilm XF10
Fujifilm X-T3« » APS-C 26.0 6240 41604K/60p----Fujifilm X-T3
Fujifilm X-T100« » APS-C 24.0 6000 40004K/15p----Fujifilm X-T100
Fujifilm X100T« » APS-C 16.0 4896 32641080/60p----Fujifilm X100T
Fujifilm X100S« » APS-C 16.0 4896 32641080/60p----Fujifilm X100S
Fujifilm X100« » APS-C 12.2 4288 2848720/30p22.912.4100173Fujifilm X100
Panasonic FZ2000« » 1-inch 20.0 5472 36484K/30p----Panasonic FZ2000
Sony A7 III« » Full Frame 24.0 6000 40004K/30p25.014.7373096Sony A7 III
Sony RX100 VI« » 1-inch 20.0 5472 36484K/30p----Sony RX100 VI
Sony A9« » Full Frame 24.0 6000 40004K/30p24.913.3351792Sony A9
Sony A99 II« » Full Frame 42.2 7952 53044K/30p25.413.4231792Sony A99 II
Sony A7R II« » Full Frame 42.2 7952 53044K/30p26.013.9343498Sony A7R II
Sony A7S II« » Full Frame 12.0 4240 28324K/30p23.613.3299385Sony A7S II

Many modern cameras are not only capable of taking still images, but also of capturing video footage. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the A7R III provides a better video resolution than the X100F. It can shoot movie footage at 4K/30p, while the Fujifilm is limited to 1080/60p.

 

Feature comparison: Fujifilm X100F vs Sony A7R III

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 A7R III offers a substantially higher resolution than the one in the X100F (3686k vs 2360k dots). The following table reports on some other key feature differences and similarities of the Fujifilm X100F, the Sony A7R III, and comparable cameras. If needed, the dpreview camera hub, for example, contains further detail on the cameras' specs.

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)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec)
Build-in
Flash
(yes/no)
Build-in
Image
Stab
Camera
Model
Fujifilm X100F»2360 n 3.0 1040 fixed n 4000 8.0 Y n Fujifilm X100F
Sony A7R III«3686 n 3.0 1440 tilting Y 8000 10.0 n Y Sony A7R III
Canon 77D« »optical Y 3.0 1040 swivel Y 4000 6.0 Y n Canon 77D
Canon G1 X Mark III« »2360 n 3.0 1040 swivel Y 2000 9.0 Y Y Canon G1 X Mark III
Fujifilm XF10« »- n 3.0 1040 fixed Y 4000 6.0 Y n Fujifilm XF10
Fujifilm X-T3« »3690 n 3.2 1040 tilting Y 8000 11.0 n n Fujifilm X-T3
Fujifilm X-T100« »2360 n 3.0 1040 full-flex Y 4000 6.0 Y n Fujifilm X-T100
Fujifilm X100T« »2360 n 3.0 1040 fixed n 4000 6.0 Y n Fujifilm X100T
Fujifilm X100S« »2360 n 2.8 460 fixed n 4000 6.0 Y n Fujifilm X100S
Fujifilm X100« »1440 n 2.8 460 fixed n 4000 5.0 Y n Fujifilm X100
Panasonic FZ2000« »2360 n 3.0 1040 swivel Y 4000 12.0 Y Y Panasonic FZ2000
Sony A7 III« »2359 n 3.0 922 tilting Y 8000 10.0 n Y Sony A7 III
Sony RX100 VI« »2359 n 3.0 1229 tilting Y 2000 24.0 Y Y Sony RX100 VI
Sony A9« »3686 n 3.0 1440 tilting Y 8000 20.0 n Y Sony A9
Sony A99 II« »2400 Y 3.0 1229 full-flex n 8000 12.0 n Y Sony A99 II
Sony A7R II« »2400 n 3.0 1229 tilting n 8000 5.0 n Y Sony A7R II
Sony A7S II« »2400 n 3.0 1229 tilting n 8000 5.0 n Y Sony A7S II

One difference between the cameras concerns the presence of an on-board flash. The X100F has one, while the A7R III does not. While the build-in flash of the X100F is not very powerful, it can at times be useful as a fill-in light.

The reported shutter speed and shutter burst refer to the use of the mechanical shutter. In addition, the A7R III features an electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (rolling shutter) or shooting under artificial light sources (flickering).

The X100F writes its imaging data to SDXC cards, while the A7R III uses SDXC or Memory Stick PRO Duo cards. The A7R III features dual card slots, which can be very useful in case a memory card fails. In contrast, the X100F only has one slot.

Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Type
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
Fujifilm X100F»YstereomonoY-micro2.0Y--Fujifilm X100F
Sony A7R III«YstereomonoYYmicro3.1YYYSony A7R III
Canon 77D« »YstereomonoY-mini2.0YYYCanon 77D
Canon G1 X Mark III« »Ystereomono--micro2.0YYYCanon G1 X Mark III
Fujifilm XF10« »-stereomonoY-micro2.0Y-YFujifilm XF10
Fujifilm X-T3« »YstereomonoYYmicro3.1Y-YFujifilm X-T3
Fujifilm X-T100« »YstereomonoY-micro2.0Y-YFujifilm X-T100
Fujifilm X100T« »YstereomonoY-micro2.0Y--Fujifilm X100T
Fujifilm X100S« »Ystereomono--micro2.0---Fujifilm X100S
Fujifilm X100« »Ystereo---mini2.0---Fujifilm X100
Panasonic FZ2000« »YstereomonoYYmicro2.0Y--Panasonic FZ2000
Sony A7 III« »YstereomonoYYmicro3.1YYYSony A7 III
Sony RX100 VI« »-stereomono--micro2.0YYYSony RX100 VI
Sony A9« »YstereomonoYYmicro2.0YYYSony A9
Sony A99 II« »YstereomonoYYmicro2.0YYYSony A99 II
Sony A7R II« »YstereomonoYYmicro2.0YY-Sony A7R II
Sony A7S II« »YstereomonoYYmicro2.0YY-Sony A7S II

Both the X100F and the A7R III are current models that good online retailers will have in stock. You can check the latest prices, for example, at amazon. The X100F replaced the earlier Fujifilm X100T, while the A7R III followed on from the Sony A7R II.

Review summary: Fujifilm X100F vs Sony A7R III

So what is the bottom line? Is the Fujifilm X100F better than the Sony A7R 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 X100F:

  • Ready to shoot: Has a lens build-in, whereas the A7R III requires a separate lens.
  • More compact: Is smaller (127x75mm vs 127x96mm) and thus needs less room in the bag.
  • Less heavy: Is lighter even though it comes with a build-in lens (unlike the A7R III).
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More affordable: Was introduced at a lower price, despite coming with a build-in lens.
  • More heavily discounted: Has been on the market for longer (launched in January 2017).

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Arguments in favor of the Sony Alpha A7R III:

  • More detail: Has more megapixels (42.2 vs 24MP), which boosts linear resolution by 33%.
  • High quality composites: Can combine several shots after pixel-shifting its sensor.
  • Better image quality: Is equipped with a larger and more technologically advanced sensor.
  • Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • More detailed viewfinder: Has higher resolution electronic viewfinder (3686k vs 2360k dots).
  • More detailed LCD: Has a higher resolution rear screen (1440k vs 1040k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • Faster shutter: Has higher mechanical shutter speed (8000/sec vs 4000/sec) to freeze action.
  • Faster burst: Shoots at higher frequency (10 vs 8 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • More flexible: Takes interchangeable lenses and can thus be used with specialty optics.
  • Longer lasting: Gets more shots (650 versus 390) out of a single battery charge.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Sharper images: Has stabilization technology build-in to reduce the impact of hand-shake.
  • Faster data transfer: Supports a more advanced USB protocol (3.1 vs 2.0).
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • More modern: Was introduced somewhat (9 months) more recently.

If the number of relative strengths (bullet points above) is taken as a guide, the A7R III is the clear winner of the contest (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.

X100F 06:21 A7R III

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 handling experience and imaging performance when actually working with the X100F or the A7R III. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased. This is why expert reviews are important. The following table reports the overall rankings of the cameras as published by some of the major camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). The detailed reviews can be accessed by clicking on the site logo in the table header.

Review Scores
  Camera
Model
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
Fujifilm X100F»Rec83/1004.5/5-4.5/5 Jan 2017 1,299 i i Fujifilm X100F
Sony A7R III«HiRec90/1004.5/55/55/5 Oct 2017 3,199 i i Sony A7R III
Canon 77D« »-82/1004.5/54.5/54/5 Feb 2017 899 i i Canon 77D
Canon G1 X Mark III« »Rec79/1004.5/5-4.5/5 Oct 2017 1,299 i i Canon G1 X Mark III
Fujifilm XF10« »--4/5-4.5/5 Jul 2018 499 i i Fujifilm XF10
Fujifilm X-T3« »----5/5 Sep 2018 1,499 i i Fujifilm X-T3
Fujifilm X-T100« »Rec79/1004/5-4.5/5 May 2018 599 i i Fujifilm X-T100
Fujifilm X100T« »Rec81/1004.5/54.5/55/5 Sep 2014 1,299- i Fujifilm X100T
Fujifilm X100S« »HiRec81/1004.5/54/55/5 Jan 2013 1,299- i Fujifilm X100S
Fujifilm X100« »-75/1004/54/55/5 Sep 2010 1,199- i Fujifilm X100
Panasonic FZ2000« »Rec82/1004.5/54.5/55/5 Sep 2016 1,199 i i Panasonic FZ2000
Sony A7 III« »HiRec89/1005/55/55/5 Feb 2018 1,999 i i Sony A7 III
Sony RX100 VI« »HiRec83/1004/5-4.5/5 Jun 2018 1,199 i i Sony RX100 VI
Sony A9« »HiRec89/1005/55/55/5 Apr 2017 4,499 i i Sony A9
Sony A99 II« »-85/1004.5/54.5/54.5/5 Sep 2016 3,199 i i Sony A99 II
Sony A7R II« »HiRec90/1005/54.5/55/5 Jun 2015 3,199- i Sony A7R II
Sony A7S II« »Rec-4.5/55/55/5 Sep 2015 2,999 i i Sony A7S II

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 comparisons of ratings among very different cameras or across long time periods have little meaning. 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? In case you would like to check on the differences and similarities of other camera models, just use the search menu below. An an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool. If the camera you are interested in is not available, kindly get in touch, and I will try to update the database with the necessary infos.

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