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Fujifilm X100 versus Sony RX100 IV

The Fujifilm FinePix X100 and the Sony Cyber-shot DSC-RX100 IV are two digital cameras that were announced, respectively, in September 2010 and June 2015. Both the X100 and the RX100 IV are fixed lens compact cameras that are based on an APS-C (X100) and an one-inch (RX100 IV) sensor. The Fujifilm has a resolution of 12.2 megapixel, whereas the Sony provides 20 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 X100 vs Sony RX100 IV

An illustration of the physical size and weight of the Fujifilm X100 and the Sony RX100 IV is provided in the side-by-side display below. Three consecutive perspectives from the front, the top, and the back are presented. All width, height and depth dimensions 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 X100 – represents the basis or 100 percent across all the size and weight measures).

Snapsort Fujifilm X100 vs Sony RX100 IV
Compare X100 versus RX100 IV top
Compare X100 and RX100 IV rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony RX100 IV is considerably smaller (37 percent) than the Fujifilm X100. Moreover, the RX100 IV is markedly lighter (33 percent) than the X100. In this context, it is worth noting that neither the X100 nor the RX100 IV are weather-sealed.

Concerning battery life, the X100 gets 300 shots out of its NP-95 battery, while the RX100 IV can take 280 images on a single charge of its NP-BX1 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 camera comparisons there.

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)
Fujifilm X100» 5.0 in 3.0 in 2.1 in 15.7 oz 300 n Sep 2010 1,199- i
Sony RX100 IV« 4.0 in 2.3 in 1.6 in 10.5 oz 280 n Jun 2015 999- i
Canon G7 X« » 4.1 in 2.4 in 1.6 in 10.7 oz 210 n Sep 2014 699- i
Canon G1 X« » 4.6 in 3.2 in 2.6 in 18.8 oz 250 n Jan 2012 799- i
Canon T3« » 5.1 in 3.9 in 3.1 in 17.5 oz 700 n Feb 2011 449- i
Fujifilm X30« » 4.7 in 2.8 in 2.4 in 14.9 oz 470 n Aug 2014 599 i i
Fujifilm X100S« » 5.0 in 2.9 in 2.1 in 15.7 oz 330 n Jan 2013 1,299- i
Fujifilm X10« » 4.6 in 2.8 in 2.2 in 12.3 oz 270 n Sep 2011 599- i
Leica D-LUX Typ 109« » 4.6 in 2.6 in 2.2 in 14.3 oz 300 n Sep 2014 1,195 i i
Nikon D3100« » 4.9 in 3.8 in 3.0 in 17.8 oz 550 n Aug 2010 599- i
Nikon D3000« » 5.0 in 3.8 in 2.5 in 18.9 oz 500 n Jul 2009 599- i
Panasonic FZ1000« » 5.4 in 3.9 in 5.2 in 29.3 oz 360 n Jun 2014 899- i
Panasonic LX100« » 4.5 in 2.6 in 2.2 in 13.9 oz 300 n Sep 2014 899 i i
Panasonic GH1« » 4.9 in 3.5 in 1.8 in 13.6 oz 300 n Mar 2009 1,499- i
Sony RX100 V« » 4.0 in 2.3 in 1.6 in 10.5 oz 220 n Oct 2016 999 i i
Sony A6000« » 4.7 in 2.6 in 1.8 in 12.1 oz 360 n Feb 2014 599- i
Sony RX100 II« » 4.0 in 2.3 in 1.5 in 9.9 oz 350 n Jun 2013 749- i

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 RX100 IV was launched at a somewhat lower price (by 17 percent) than the X100, which makes it more attractive for photographers on a tight budget. 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: Fujifilm X100 vs Sony RX100 IV

The size of the sensor inside a digital camera is one of the key determinants of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color depth than smaller pixel-units 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 tend to be associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Fujifilm X100 features an APS-C sensor and the Sony RX100 IV an one-inch sensor. The sensor area in the RX100 IV is 69 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 2.7. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Fujifilm X100 and Sony RX100 IV sensor measures

Despite having a smaller sensor, the RX100 IV offers a higher resolution of 20 megapixel, compared with 12.2 MP of the X100. This megapixel advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 2.41μm versus 5.53μm for the X100). However, it should be noted that the RX100 IV is much more recent (by 4 years and 8 months) than the X100, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently. Coming back to sensor resolution, it should be mentioned that the X100 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

X100 versus RX100 IV MP

For most cameras, data on sensor performance has been reported by DXO Mark. 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 Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar image quality. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

Sensor Characteristics
  Camera Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Fujifilm X100» APS-C 12.2 4288 2848720/30p22.912.4100173
Sony RX100 IV« 1-inch 20.0 5472 36484K/30p22.812.659170
Canon G7 X« » 1-inch 20.0 5472 36481080/60p23.012.755671
Canon G1 X« » 1.5-inch 14.2 4352 32641080/24p21.710.864460
Canon T3« » APS-C 12.2 4272 2848720/30p21.911.075562
Fujifilm X30« » 2/3 12.0 4000 30001080/60p----
Fujifilm X100S« » APS-C 16.0 4896 32641080/60p----
Fujifilm X10« » 2/3 12.0 4000 30001080/30p20.511.324550
Leica D-LUX Typ 109« » Four Thirds 12.7 4112 30884K/30p----
Nikon D3100« » APS-C 14.2 4608 30721080/24p22.511.391967
Nikon D3000« » APS-C 10.0 3872 2592-22.311.156362
Panasonic FZ1000« » 1-inch 20.0 5472 36484K/30p22.111.751764
Panasonic LX100« » Four Thirds 12.7 4112 30884K/30p22.312.555367
Panasonic GH1« » Four Thirds 12.0 4000 30001080/24p21.611.677264
Sony RX100 V« » 1-inch 20.0 5472 36484K/30p22.812.458670
Sony A6000« » APS-C 24.0 6000 40001080/60p24.113.1134782
Sony RX100 II« » 1-inch 20.0 5472 36481080/60p22.512.448367

Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the RX100 IV provides a better video resolution than the X100. It can shoot movie footage at 4K/30p, while the Fujifilm is limited to 720/30p.

 

Feature comparison: Fujifilm X100 vs Sony RX100 IV

Beyond 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 RX100 IV offers a substantially higher resolution than the one in the X100 (2359k vs 1440k dots). The following table reports on some other key feature differences and similarities of the Fujifilm X100, the Sony RX100 IV, and comparable cameras. If you need more detail on the specs, you can find comprehensive listings, for example, in the dpreview camera hub.

Core Features
  Camera 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
Fujifilm X100»1440 n 2.8 460 fixed n 4000 5.0 Y n
Sony RX100 IV«2359 n 3.0 1228 tilting n 2000 16.0 Y Y
Canon G7 X« »- n 3.0 1040 tilting Y 2000 6.5 Y Y
Canon G1 X« »optical n 3.0 922 Swivel n 4000 1.9 Y Y
Canon T3« »optical n 2.7 230 fixed n 4000 3.0 Y n
Fujifilm X30« »2360 n 3.0 920 tilting n 4000 12.0 Y Y
Fujifilm X100S« »2360 n 2.8 460 fixed n 4000 6.0 Y n
Fujifilm X10« »optical n 2.8 460 fixed n 4000 10.0 Y Y
Leica D-LUX Typ 109« »2764 n 3.0 921 fixed n 4000 11.0 n Y
Nikon D3100« »optical n 3.0 230 fixed n 4000 3.0 Y n
Nikon D3000« »optical n 3.0 230 fixed n 4000 3.0 Y n
Panasonic FZ1000« »2359 n 3.0 921 swivel n 4000 12.0 Y Y
Panasonic LX100« »2764 n 3.0 921 fixed n 4000 11.0 n Y
Panasonic GH1« »1440 n 3.0 460 swivel n 4000 3.0 Y n
Sony RX100 V« »2359 n 3.0 1229 tilting n 2000 24.0 Y Y
Sony A6000« »1440 n 3.0 922 tilting n 4000 11.0 Y n
Sony RX100 II« »- n 3.0 1229 tilting n 2000 10.0 Y Y

The RX100 IV is equipped with a zoom lens, while the X100 comes with a build-in prime. The RX100 IV has a 24-70mm f/1.8-2.8 optic and the X100 offers a 35mm f/2.0 (focal lengths in full frame equivalent terms). Hence, the Sony provides a wider angle of view at the short end, as well as more tele-photo reach at the long end than the Fujifilm. The RX100 IV offers the faster maximum aperture.

Both the X100 and the RX100 IV have been discontinued, but can regularly be found used on eBay. The X100 was replaced by the Fujifilm X100S, while the RX100 IV was followed by the Sony RX100 IV.

Review summary: Fujifilm X100 vs Sony RX100 IV

So what conclusions can be drawn? Which of the two cameras – the Fujifilm X100 or the Sony RX100 IV – has the upper hand? A synthesis of the relative strong points of each of the models is listed below.

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Arguments in favor of the Fujifilm FinePix X100:

  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better low-light sensitivity: Requires less light for good images (0.8 stops ISO advantage).
  • Faster shutter: Has higher mechanical shutter speed (4000/sec vs 2000/sec) to freeze action.
  • More heavily discounted: Has been available for much longer (launched in September 2010).

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Reasons to prefer the Sony Cyber-shot DSC-RX100 IV:

  • More detail: Has more megapixels (20 vs 12.2MP), which boosts linear resolution by 28%.
  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better video: Provides higher definition movie capture (4K/30p vs 720/30p).
  • More detailed viewfinder: Has higher resolution electronic viewfinder (2359k vs 1440k dots).
  • Larger screen: Has a bigger rear LCD (3.0" vs 2.8") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1228k vs 460k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Faster burst: Shoots at higher frequency (16 vs 5 flaps/sec) to capture the decisive moment.
  • Better light gathering: Has a lens with a wider maximum aperture (f/1.8 vs f/2.0).
  • Wider view: Has a wider-angle lens that facilitates landscape or interior shots.
  • More compact: Is smaller (102x58mm vs 126x75mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 147g or 33 percent) and is thus easier to take along.
  • Sharper images: Has stabilization technology build-in to reduce the impact of hand-shake.
  • More affordable: Was released into a lower priced segment (17 percent cheaper at launch).
  • More modern: Reflects 4 years and 8 months of technical progress since the X100 launch.

If the number of relative strengths (bullet points above) is taken as a guide, the RX100 IV is the clear winner of the contest (15 : 4 points). 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.

X100 04:15 RX100 IV

In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it says nothing about, for example, the handling, responsiveness, and overall imaging quality of the X100 and the RX100 IV 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. This is why expert reviews are important. The table below summarizes the assessments of some of the best known camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). You can find the full text of the reviews by clicking on the site logo in the table header.

Review scores
  Camera cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Fujifilm X100»-75/1004/54/55/5 Sep 2010 1,199- i
Sony RX100 IV«HiRec85/1004/54.5/54.5/5 Jun 2015 999- i
Canon G7 X« »HiRec77/1004.5/53.5/54.5/5 Sep 2014 699- i
Canon G1 X« »Rec76/1004/54/54.5/5 Jan 2012 799- i
Canon T3« »80/10069/1004/54/54.5/5 Feb 2011 449- i
Fujifilm X30« »-76/1004.5/54/54.5/5 Aug 2014 599 i i
Fujifilm X100S« »HiRec81/1004.5/54/55/5 Jan 2013 1,299- i
Fujifilm X10« »-76/1004/53.5/54.5/5 Sep 2011 599- i
Leica D-LUX Typ 109« »--4.5/5-4.5/5 Sep 2014 1,195 i i
Nikon D3100« »HiRec72/1004.5/55/54.5/5 Aug 2010 599- i
Nikon D3000« »Rec72/1004/53.5/54.5/5 Jul 2009 599- i
Panasonic FZ1000« »HiRec82/1004.5/54.5/54.5/5 Jun 2014 899- i
Panasonic LX100« »HiRec85/1005/54/55/5 Sep 2014 899 i i
Panasonic GH1« »HiRec72/1004.5/55/54.5/5 Mar 2009 1,499- i
Sony RX100 V« »HiRec83/1004/55/54.5/5 Oct 2016 999 i i
Sony A6000« »Rec80/1004.5/55/55/5 Feb 2014 599- i
Sony RX100 II« »HiRec79/1004.5/55/54.5/5 Jun 2013 749- i

The review scores listed above should be treated 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 rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. 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? If you would like to see a different side-by-side camera review, just use the search menu below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored. If the camera you are interested in is not available, please send me an email, and I will try to update the database with the necessary infos.

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