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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 announced, 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 sensor. The Fujifilm has a resolution of 24 megapixel, whereas the Sony provides 42.2 MP.

Body comparison

The side-by-side display below illustrates the physical size and weight of the Fujifilm X100F and the Sony A7R III. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth measures are rounded to the nearest millimeter. You can also use the toggle button to switch to a percentage comparison if you prefer that the measures are being expressed in relative terms (in this case, the camera on the left – the X100F – represents the basis or 100 percent across all the size and weight measures).

Fujifilm X100F vs Sony A7R III front
X100F versus A7R III top view
X100F and A7R III rear side
Body view (X100F on the left)

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 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, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible comparisons there.

Camera Body Specifications
Camera Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(y/n)
Camera
Launch
(year)
Launch
Price
(USD)
Street
Price
(amazon)
Used
Price
(ebay)
Fujifilm X100F (⇒ rgt) 127 mm 75 mm 52 mm 469 g 390 no 2017 1,299 latest check
Sony A7R III (⇒ lft) 127 mm 96 mm 74 mm 650 g 650 YES 2017 3,199 latest check
Canon G9 X Mark II (⇒ lft | rgt) 98 mm 58 mm 31 mm 206 g 235 no 2017 529 latest check
Canon G1 X Mark III (⇒ lft | rgt) 115 mm 78 mm 51 mm 399 g 200 YES 2017 1,299 latest check
Canon G7 X Mark II (⇒ lft | rgt) 106 mm 61 mm 42 mm 319 g 265 no 2016 699 latest check
Fujifilm X-E3 (⇒ lft | rgt) 121 mm 74 mm 43 mm 337 g 350 no 2017 899 latest check
Fujifilm X70 (⇒ lft | rgt) 113 mm 64 mm 44 mm 340 g 330 no 2016 799 latest check
Fujifilm X-A3 (⇒ lft | rgt) 117 mm 67 mm 40 mm 339 g 410 no 2016 399 latest check
Fujifilm X100T (⇒ lft | rgt) 127 mm 74 mm 52 mm 440 g 330 no 2014 1,299discont. check
Fujifilm X100S (⇒ lft | rgt) 127 mm 74 mm 54 mm 445 g 330 no 2013 1,299discont. check
Fujifilm X100 (⇒ lft | rgt) 126 mm 75 mm 54 mm 445 g 300 no 2010 1,199discont. check
Panasonic FZ2000 (⇒ lft | rgt) 138 mm 102 mm 135 mm 915 g 350 no 2016 1,199 latest check
Sony A7 III (⇒ lft | rgt) 127 mm 96 mm 74 mm 650 g 610 YES 2018 1,999 latest check
Sony A99 II (⇒ lft | rgt) 143 mm 104 mm 76 mm 849 g 490 YES 2016 3,199 latest check
Sony A7R II (⇒ lft | rgt) 127 mm 96 mm 60 mm 625 g 290 YES 2015 3,199discont. check
Sony A7 II (⇒ lft | rgt) 127 mm 96 mm 60 mm 599 g 350 YES 2014 1,999discont. check
Sony A7R (⇒ lft | rgt) 127 mm 94 mm 48 mm 465 g 340 YES 2013 2,299discont. check

The listed prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

Sensor comparison

The imaging sensor is at the core of digital cameras and its size is one of the main determining factors of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color depth than smaller pixels in a sensor of the same technological generation. 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 associated with larger, more expensive camera bodies 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
Sensor size

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
Sensor resolution

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 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 Sensor
Class
Resolution
(Megapixel)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Fujifilm X100F (⇒ rgt) APS-C 24.0 6000 4000 1080/60p - - - -
Sony A7R III (⇒ lft) Full Frame 42.2 7952 5304 4K/30p 26.0 14.7 3523 100
Canon G9 X Mark II (⇒ lft | rgt) 1-inch 20.0 5472 3648 1080/60p 21.9 12.5 522 65
Canon G1 X Mark III (⇒ lft | rgt) APS-C 24.0 6000 4000 1080/60p .. .. .. ..
Canon G7 X Mark II (⇒ lft | rgt) 1-inch 20.0 5472 3648 1080/60p - - - -
Fujifilm X-E3 (⇒ lft | rgt) APS-C 24.0 6000 4000 4K/30p - - - -
Fujifilm X70 (⇒ lft | rgt) APS-C 16.0 4896 3264 1080/60p - - - -
Fujifilm X-A3 (⇒ lft | rgt) APS-C 24.0 6000 4000 1080/60p - - - -
Fujifilm X100T (⇒ lft | rgt) APS-C 16.0 4896 3264 1080/60p - - - -
Fujifilm X100S (⇒ lft | rgt) APS-C 16.0 4896 3264 1080/60p - - - -
Fujifilm X100 (⇒ lft | rgt) APS-C 12.2 4288 2848 720/30p 22.9 12.4 1001 73
Panasonic FZ2000 (⇒ lft | rgt) 1-inch 20.0 5472 3648 4K/30p .. .. .. ..
Sony A7 III (⇒ lft | rgt) Full Frame 24.0 6000 4000 4K/30p 25.0 14.7 3730 96
Sony A99 II (⇒ lft | rgt) Full Frame 42.2 7952 5304 4K/30p 25.4 13.4 2317 92
Sony A7R II (⇒ lft | rgt) Full Frame 42.2 7952 5304 4K/30p 26.0 13.9 3434 98
Sony A7 II (⇒ lft | rgt) Full Frame 24.0 6000 4000 1080/60p 24.9 13.6 2449 90
Sony A7R (⇒ lft | rgt) Full Frame 36.2 7360 4912 1080/60p 25.6 14.1 2746 95

Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration have a sensor with sufficiently fast read-out times for 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

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 table below summarizes some of the other core capabilities of the Fujifilm X100F and Sony A7R III in connection with corresponding information for a sample of similar cameras. If needed, the dpreview camera hub, for example, contains further detail on the cameras' specs.

Core Features
Camera Viewfinder
(Type or
'000 dots)
Control
Panel
(Y/n)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(Y/n)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec))
Build-in
Flash
(GN)
Build-in
Image
Stab
Fujifilm X100F (⇒ rgt) 2360 no 3.0 1040 fixed no 4000 8.0 4.6 no
Sony A7R III (⇒ lft) 3686 no 3.0 1440 tilting YES 8000 10.0 no YES
Canon G9 X Mark II (⇒ lft | rgt) no no 3.0 1040 fixed YES 2000 8.2 6 YES
Canon G1 X Mark III (⇒ lft | rgt) 2360 no 3.0 1040 swivel YES 2000 9.0 9 YES
Canon G7 X Mark II (⇒ lft | rgt) no no 3.0 1040 tilting YES 2000 8.0 7 YES
Fujifilm X-E3 (⇒ lft | rgt) 2360 no 3.0 1040 fixed YES 4000 8.0 no no
Fujifilm X70 (⇒ lft | rgt) no no 3.0 1040 tilting YES 4000 8.0 7.9 ..
Fujifilm X-A3 (⇒ lft | rgt) no no 3.0 1040 tilting YES 4000 6.0 7 no
Fujifilm X100T (⇒ lft | rgt) 2360 no 3.0 1040 fixed no 4000 6.0 9 no
Fujifilm X100S (⇒ lft | rgt) 2360 no 2.8 460 fixed no 4000 6.0 9 no
Fujifilm X100 (⇒ lft | rgt) 1440 no 2.8 460 fixed no 4000 5.0 9 no
Panasonic FZ2000 (⇒ lft | rgt) 2360 no 3.0 1040 swivel YES 4000 12.0 13.2 YES
Sony A7 III (⇒ lft | rgt) 2359 no 3.0 922 tilting YES 8000 10 no YES
Sony A99 II (⇒ lft | rgt) 2400 YES 3.0 1229 full-flex no 8000 12.0 no YES
Sony A7R II (⇒ lft | rgt) 2400 no 3.0 1229 tilting no 8000 5.0 no YES
Sony A7 II (⇒ lft | rgt) 2400 no 3.0 1230 tilting no 8000 5.0 no YES
Sony A7R (⇒ lft | rgt) 2400 no 3.0 1230 tilting no 8000 4.0 no no

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.

Summary

So what is the bottom line? Which of the two cameras – the Fujifilm X100F or the Sony A7R III – has the upper hand? A synthesis of the relative strong points of each of the models is listed below.


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Advantages of 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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Reasons to prefer 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).
  • 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.
  • 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.
  • More modern: Was introduced somewhat (9 months) more recently.

If the count of relative strengths (bullet points above) is taken as a measure, the A7R III is the clear winner of the contest (15 : 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.

X100F 06:15 A7R III

In any case, while the specs-based evaluation of cameras is instructive in revealing their potential as photographic tools, it remains incomplete and does no justice, for example, to the way the X100F or the A7R III handle or perform in practice. 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 table below summarizes the assessments of some of the best known camera review sites. You can find the full text of the reviews, respectively, at cameralabs.com, dpreview.com, ephotozine.com, imaging-resource.com, and photographyblog.com.

Review scores
Camera camera
labs
dp
review
ephoto
zine
imaging
resource
photography
blog
Camera
Launch
(year)
Launch
Price
(USD)
Street
Price
(amazon)
Used
Price
(ebay)
Fujifilm X100F (⇒ rgt) Rec 83/100 Gold 4.5/5 .. 4.5/5 2017 1,299 latest check
Sony A7R III (⇒ lft) HiRec 90/100 Gold 4.5/5 5/5 5/5 2017 3,199 latest check
Canon G9 X Mark II (⇒ lft | rgt) .. 75/100 4.5/5 4.5/5 4.5/5 2017 529 latest check
Canon G1 X Mark III (⇒ lft | rgt) Rec 79/100 4.5/5 .. 4.5/5 2017 1,299 latest check
Canon G7 X Mark II (⇒ lft | rgt) HiRec 81/100 Silver 4.5/5 4/5 4.5/5 2016 699 latest check
Fujifilm X-E3 (⇒ lft | rgt) Rec 84/100 Gold 4.5/5 .. 4.5/5 2017 899 latest check
Fujifilm X70 (⇒ lft | rgt) - 76/100 4.5/5 4/5 4.5/5 2016 799 latest check
Fujifilm X-A3 (⇒ lft | rgt) - 74/100 4.5/5 - 4/5 2016 399 latest check
Fujifilm X100T (⇒ lft | rgt) Rec 81/100 Silver 4.5/5 4.5/5 5/5 2014 1,299discont. check
Fujifilm X100S (⇒ lft | rgt) HiRec 81/100 Gold 4.5/5 4/5 5/5 2013 1,299discont. check
Fujifilm X100 (⇒ lft | rgt) - 75/100 Silver 4/5 4/5 5/5 2010 1,199discont. check
Panasonic FZ2000 (⇒ lft | rgt) Rec 82/100 Silver 4.5/5 4.5/5 5/5 2016 1,199 latest check
Sony A7 III (⇒ lft | rgt) HiRec .. 5/5 .. 5/5 2018 1,999 latest check
Sony A99 II (⇒ lft | rgt) - 85/100 Silver 4.5/5 4.5/5 4.5/5 2016 3,199 latest check
Sony A7R II (⇒ lft | rgt) HiRec 90/100 Gold 5/5 4.5/5 5/5 2015 3,199discont. check
Sony A7 II (⇒ lft | rgt) Rec 82/100 Silver 4.5/5 5/5 5/5 2014 1,999discont. check
Sony A7R (⇒ lft | rgt) HiRec 82/100 Gold 4.5/5 5/5 5/5 2013 2,299discont. check

Care should be taken when interpreting the review scores above, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. A score, therefore, has to be seen in close connection to the price and market introduction time 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. Also, please note that some of the review sites have changed their methodology and reporting over time.

Other comparisons

If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes 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 you cannot find the camera you are interested in, kindly get in touch, and I will try to update the database with the necessary infos.

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