PW

Fujifilm X-A3 versus Sony RX100 III

The Fujifilm X-A3 and the Sony Cyber-shot DSC-RX100 III are two digital cameras that were announced, respectively, in August 2016 and May 2014. The X-A3 is a mirrorless interchangeable lens camera, while the RX100 III is a fixed lens compact. The cameras are based on an APS-C (X-A3) and an one-inch (RX100 III) sensor. The Fujifilm has a resolution of 24 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 X-A3 vs Sony RX100 III

The side-by-side display below illustrates the physical size and weight of the Fujifilm X-A3 and the Sony RX100 III. 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. 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 side – the X-A3 – represents the basis for the calculations across all the size and weight measures).

Compare Fujifilm X-A3 vs Sony RX100 III
Compare X-A3 versus RX100 III top
Compare X-A3 and RX100 III rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony RX100 III is notably smaller (25 percent) than the Fujifilm X-A3. In this context, it is worth noting that neither the X-A3 nor the RX100 III are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the RX100 III has a lens build in, whereas the X-A3 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 X-A3 and their specifications in the Fujinon X Lens Catalog.

Concerning battery life, the X-A3 gets 410 shots out of its NP-W126S battery, while the RX100 III can take 320 images on a single charge of its NP-BX1 power pack.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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 X-A3» 4.6 in 2.6 in 1.6 in 12.0 oz 410 n Aug 2016 399 i i Fujifilm X-A3
Sony RX100 III« 4.0 in 2.3 in 1.6 in 10.2 oz 320 n May 2014 799- i Sony RX100 III
Canon SX730« » 4.3 in 2.5 in 1.6 in 10.6 oz 250 n Apr 2017 399- i Canon SX730
Canon G5 X« » 4.4 in 3.0 in 1.7 in 12.5 oz 210 n Oct 2015 799 i i Canon G5 X
Canon G7 X« » 4.1 in 2.4 in 1.6 in 10.7 oz 210 n Sep 2014 699- i Canon G7 X
Fujifilm X-A5« » 4.6 in 2.7 in 1.6 in 12.7 oz 450 n Jan 2018 399 i i Fujifilm X-A5
Fujifilm X-E3« » 4.8 in 2.9 in 1.7 in 11.9 oz 350 n Sep 2017 899 i i Fujifilm X-E3
Fujifilm X-T20« » 4.6 in 3.3 in 1.6 in 13.5 oz 350 n Jan 2017 899 i i Fujifilm X-T20
Fujifilm X-E2S« » 5.1 in 3.0 in 1.5 in 12.3 oz 350 n Jan 2016 699- i Fujifilm X-E2S
Fujifilm X-A10« » 4.6 in 2.6 in 1.6 in 11.7 oz 410 n Dec 2016 399 i i Fujifilm X-A10
Fujifilm X-T10« » 4.6 in 3.3 in 1.6 in 13.4 oz 350 n May 2015 799- i Fujifilm X-T10
Fujifilm X-A2« » 4.6 in 2.6 in 1.6 in 12.3 oz 410 n Jan 2015 399- i Fujifilm X-A2
Fujifilm X-A1« » 4.6 in 2.6 in 1.5 in 11.6 oz 350 n Sep 2013 399- i Fujifilm X-A1
Panasonic FZ1000« » 5.4 in 3.9 in 5.2 in 29.3 oz 360 n Jun 2014 899- i Panasonic FZ1000
Sony RX100 IV« » 4.0 in 2.3 in 1.6 in 10.5 oz 280 n Jun 2015 999- i Sony RX100 IV
Sony RX100 II« » 4.0 in 2.3 in 1.5 in 9.9 oz 350 n Jun 2013 749- i Sony RX100 II
YI M1« » 4.5 in 2.5 in 1.3 in 9.9 oz 450 n Sep 2016 349 i i YI M1

The price is, of course, an important factor in any camera decision. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. 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 X-A3 vs Sony RX100 III

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. 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 X-A3 features an APS-C sensor and the Sony RX100 III an one-inch sensor. The sensor area in the RX100 III 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 X-A3 and Sony RX100 III sensor measures

With 24MP, the X-A3 offers a higher resolution than the RX100 III (20MP), but the X-A3 nevertheless has larger individual pixels (pixel pitch of 3.92μm versus 2.41μm for the RX100 III) due to its larger sensor. Moreover, the X-A3 is a somewhat more recent model (by 2 years and 3 months) than the RX100 III, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels.

X-A3 versus RX100 III MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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 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
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
Fujifilm X-A3» APS-C 24.0 6000 40001080/60p----Fujifilm X-A3
Sony RX100 III« 1-inch 20.0 5472 36481080/60p22.412.349567Sony RX100 III
Canon SX730« » 1/2.3 20.2 5184 38881080/60p----Canon SX730
Canon G5 X« » 1-inch 20.0 5472 36481080/60p----Canon G5 X
Canon G7 X« » 1-inch 20.0 5472 36481080/60p23.012.755671Canon G7 X
Fujifilm X-A5« » APS-C 24.0 6000 40004K/15p----Fujifilm X-A5
Fujifilm X-E3« » APS-C 24.0 6000 40004K/30p----Fujifilm X-E3
Fujifilm X-T20« » APS-C 24.0 6000 40004K/30p----Fujifilm X-T20
Fujifilm X-E2S« » APS-C 16.0 4896 32641080/60p----Fujifilm X-E2S
Fujifilm X-A10« » APS-C 16.0 4896 32641080/30p----Fujifilm X-A10
Fujifilm X-T10« » APS-C 16.0 4896 32641080/60p----Fujifilm X-T10
Fujifilm X-A2« » APS-C 16.0 4896 32641080/30p----Fujifilm X-A2
Fujifilm X-A1« » APS-C 16.0 4896 32641080/30p----Fujifilm X-A1
Panasonic FZ1000« » 1-inch 20.0 5472 36484K/30p22.111.751764Panasonic FZ1000
Sony RX100 IV« » 1-inch 20.0 5472 36484K/30p22.812.659170Sony RX100 IV
Sony RX100 II« » 1-inch 20.0 5472 36481080/60p22.512.448367Sony RX100 II
YI M1« » Four Thirds 20.2 5184 38884K/30p----YI M1

Many modern cameras cannot only take still pictures, but also record videos. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, and both provide the same movie specifications (1080/60p).

 

Feature comparison: Fujifilm X-A3 vs Sony RX100 III

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the RX100 III has an electronic viewfinder (1440k dots), which can be very helpful when shooting in bright sunlight. In contrast, the X-A3 relies on live view and the rear LCD for framing. The adjacent table lists some of the other core features of the Fujifilm X-A3 and Sony RX100 III along with similar information for a selection of comparators. 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 X-A3»- n 3.0 1040 tilting Y 4000 6.0 Y n Fujifilm X-A3
Sony RX100 III«1440 n 3.0 1229 tilting n 2000 10.0 Y Y Sony RX100 III
Canon SX730« »- n 3.0 922 tilting n 3200 5.9 Y Y Canon SX730
Canon G5 X« »2360 n 3.0 1040 swivel Y 2000 5.9 Y Y Canon G5 X
Canon G7 X« »- n 3.0 1040 tilting Y 2000 6.5 Y Y Canon G7 X
Fujifilm X-A5« »- n 3.0 1040 tilting Y 4000 6.0 Y n Fujifilm X-A5
Fujifilm X-E3« »2360 n 3.0 1040 fixed Y 4000 8.0 n n Fujifilm X-E3
Fujifilm X-T20« »2360 n 3.0 1040 tilting Y 4000 8.0 Y n Fujifilm X-T20
Fujifilm X-E2S« »2360 n 3.0 1040 fixed n 4000 7.0 Y n Fujifilm X-E2S
Fujifilm X-A10« »- n 3.0 1040 tilting n 4000 6.0 Y n Fujifilm X-A10
Fujifilm X-T10« »2360 n 3.0 920 tilting n 4000 8.0 Y n Fujifilm X-T10
Fujifilm X-A2« »- n 3.0 920 tilting n 4000 5.6 Y n Fujifilm X-A2
Fujifilm X-A1« »- n 3.0 920 tilting n 4000 5.6 Y n Fujifilm X-A1
Panasonic FZ1000« »2359 n 3.0 921 swivel n 4000 12.0 Y Y Panasonic FZ1000
Sony RX100 IV« »2359 n 3.0 1228 tilting n 2000 16.0 Y Y Sony RX100 IV
Sony RX100 II« »- n 3.0 1229 tilting n 2000 10.0 Y Y Sony RX100 II
YI M1« »- n 3.0 1040 fixed Y 4000 5.0 n n YI M1

The X-A3 is a current model that online retailers, such as amazon, will have in stock. In contrast, the RX100 III has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the RX100 III was succeeded by the Sony RX100 IV.

Review summary: Fujifilm X-A3 vs Sony RX100 III

So how do things add up? Which of the two cameras – the Fujifilm X-A3 or the Sony RX100 III – has the upper hand? A synthesis of the relative strong points of each of the models is listed below.

ilogo

Arguments in favor of the Fujifilm X-A3:

  • More detail: Offers more megapixels (24 vs 20MP) with a 10% higher linear resolution.
  • Better image quality: Features a larger and more technologically advanced imaging sensor.
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • Faster shutter: Has higher mechanical shutter speed (4000/sec vs 2000/sec) to freeze action.
  • More flexible: Accepts interchangeable lenses, so that lens characteristics can be altered.
  • Longer lasting: Can take more shots (410 versus 320) on a single battery charge.
  • More modern: Reflects 2 years and 3 months of technical progress since the RX100 III launch.

ilogo

Advantages of the Sony Cyber-shot DSC-RX100 III:

  • Easier framing: Has an electronic viewfinder for image framing and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1229k vs 1040k dots).
  • Faster burst: Shoots at higher frequency (10 vs 6 flaps/sec) to capture the decisive moment.
  • Ready to shoot: Has an integrated lens, whereas the X-A3 necessitates an extra lens.
  • More compact: Is smaller (102x58mm vs 117x67mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight even though it has a lens build in (unlike the X-A3).
  • Sharper images: Has stabilization technology build-in to reduce the impact of hand-shake.
  • More heavily discounted: Has been around for much longer (launched in May 2014).

If the count of individual advantages (bullet points above) is taken as a guide, the RX100 III comes out slightly ahead of the X-A3 (8 : 7 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.

X-A3 07:08 RX100 III

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it says nothing about, for example, the handling, responsiveness, and overall imaging quality of the X-A3 and the RX100 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. 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). 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 X-A3»-74/1004.5/5-4/5 Aug 2016 399 i i Fujifilm X-A3
Sony RX100 III«HiRec82/1004.5/54.5/55/5 May 2014 799- i Sony RX100 III
Canon SX730« »Rec-4/5-4/5 Apr 2017 399- i Canon SX730
Canon G5 X« »HiRec78/1004.5/54/54.5/5 Oct 2015 799 i i Canon G5 X
Canon G7 X« »HiRec77/1004.5/53.5/54.5/5 Sep 2014 699- i Canon G7 X
Fujifilm X-A5« »Rec-4/54/53.5/5 Jan 2018 399 i i Fujifilm X-A5
Fujifilm X-E3« »Rec84/1004.5/54.5/54.5/5 Sep 2017 899 i i Fujifilm X-E3
Fujifilm X-T20« »HiRec82/1005/5-4.5/5 Jan 2017 899 i i Fujifilm X-T20
Fujifilm X-E2S« »-77/1004.5/5-4.5/5 Jan 2016 699- i Fujifilm X-E2S
Fujifilm X-A10« »--4/5-4/5 Dec 2016 399 i i Fujifilm X-A10
Fujifilm X-T10« »HiRec80/1005/54/55/5 May 2015 799- i Fujifilm X-T10
Fujifilm X-A2« »--4.5/54/54.5/5 Jan 2015 399- i Fujifilm X-A2
Fujifilm X-A1« »--4.5/5-4.5/5 Sep 2013 399- i Fujifilm X-A1
Panasonic FZ1000« »HiRec82/1004.5/54.5/54.5/5 Jun 2014 899- i Panasonic FZ1000
Sony RX100 IV« »HiRec85/1004/54.5/54.5/5 Jun 2015 999- i Sony RX100 IV
Sony RX100 II« »HiRec79/1004.5/55/54.5/5 Jun 2013 749- i Sony RX100 II
YI M1« »-69/100-2.5/5- Sep 2016 349 i i YI M1

The above review scores should be interpreted with care, though. The ratings are only valid when refering to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. 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? In case you are interested in seeing how other cameras pair up, just make your choice using the following search menu. 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, please contact me, and I will try to locate and add the respective data to the application.

vs

    You are here  »   »