Fujifilm X-T20 versus Sony A7R III
The Fujifilm X-T20 and the Sony Alpha A7R III are two digital cameras that were announced, respectively, in January 2017 and October 2017. Both the X-T20 and the A7R III are mirrorless interchangeable lens cameras that are based on an APS-C (X-T20) and a full frame sensor. The Fujifilm has a resolution of 24 megapixel, whereas the Sony provides 42.2 MP.
An illustration of the physical size and weight of the Fujifilm X-T20 and the Sony A7R III is provided in the side-by-side display below. 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 side – the X-T20 – represents the basis for the calculations across all the size and weight measures).
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 (24 percent) than the Fujifilm X-T20. Moreover, the A7R III is substantially heavier (70 percent) than the X-T20. It is noteworthy in this context that the A7R III is splash and dust-proof, while the X-T20 does not feature any corresponding weather-sealing.
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. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can find an overview of optics for the two cameras in the Fujinon X Lens Catalog (X-T20) and the Sony FE Lens Catalog (A7R III). Mirrorless cameras, such as the two under consideration, have the additional advantage of having a short flange to focal plane distance, which makes it possible to mount many lenses from other systems onto the camera via adapters.
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
|Fujifilm X-T20 (⇒ rgt)||118 mm||83 mm||41 mm||383 g||350||no||2017||899||latest||check|
|Sony A7R III (⇒ lft)||127 mm||96 mm||74 mm||650 g||650||YES||2017||3,199||latest||check|
|Canon 77D (⇒ lft | rgt)||131 mm||100 mm||76 mm||540 g||600||no||2017||899||latest||check|
|Canon M6 (⇒ lft | rgt)||112 mm||68 mm||45 mm||390 g||295||no||2017||779||latest||check|
|Canon T7i (⇒ lft | rgt)||131 mm||100 mm||76 mm||532 g||600||no||2017||749||latest||check|
|Canon M5 (⇒ lft | rgt)||116 mm||89 mm||61 mm||427 g||295||no||2016||979||latest||check|
|Fujifilm X100F (⇒ lft | rgt)||127 mm||75 mm||52 mm||469 g||390||no||2017||1,299||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 X-E2S (⇒ lft | rgt)||129 mm||75 mm||37 mm||350 g||350||no||2016||699||discont.||check|
|Fujifilm X-T10 (⇒ lft | rgt)||118 mm||83 mm||41 mm||381 g||350||no||2015||799||discont.||check|
|Nikon D850 (⇒ lft | rgt)||146 mm||124 mm||79 mm||1005 g||1840||YES||2017||3,299||latest||check|
|Sony A9 (⇒ lft | rgt)||127 mm||96 mm||63 mm||673 g||650||YES||2017||4,499||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||3,199||discont.||check|
|Sony A7S II (⇒ lft | rgt)||127 mm||96 mm||60 mm||627 g||370||YES||2015||2,999||latest||check|
The listed prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The X-T20 was launched at a markedly lower price (by 72 percent) than the A7R III, 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.
The imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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. 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 are more costly to manufacture and tent to lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Fujifilm X-T20 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.
With 42.2MP, the A7R III offers a higher resolution than the X-T20 (24MP), but the A7R III nevertheless has larger individual pixels (pixel pitch of 4.52μm versus 3.92μm for the X-T20) due to its larger sensor. Moreover, the A7R III is a somewhat more recent model (by 9 months) than the X-T20, 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 X-T20, 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).
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 following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
|Fujifilm X-T20 (⇒ rgt)||APS-C||24.0||6000||4000||4K/30p||-||-||-||-|
|Sony A7R III (⇒ lft)||Full Frame||42.2||7952||5304||4K/30p||26.0||14.7||3523||100|
|Canon 77D (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/60p||..||..||..||..|
|Canon M6 (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/60p||..||..||..||..|
|Canon T7i (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/60p||..||..||..||..|
|Canon M5 (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/60p||23.4||12.4||1262||77|
|Fujifilm X100F (⇒ lft | rgt)||APS-C||24.0||6000||4000||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 X-E2S (⇒ lft | rgt)||APS-C||16.0||4896||3264||1080/60p||-||-||-||-|
|Fujifilm X-T10 (⇒ lft | rgt)||APS-C||16.0||4896||3264||1080/60p||-||-||-||-|
|Nikon D850 (⇒ lft | rgt)||Full Frame||45.4||8256||5504||4K/30p||26.4||14.8||2660||100|
|Sony A9 (⇒ lft | rgt)||Full Frame||24.0||6000||4000||4K/30p||24.9||13.3||3517||92|
|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 A7S II (⇒ lft | rgt)||Full Frame||12.0||4240||2832||4K/30p||23.6||13.3||2993||85|
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 (4K/30p).
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 A7R III offers a substantially higher resolution than the one in the X-T20 (3686k vs 2360k dots). The following table reports on some other key feature differences and similarities of the Fujifilm X-T20, the Sony A7R III, and comparable cameras. The full specs-sheets can be found in the camera manual or, for example, in the dpreview camera hub.
|Fujifilm X-T20 (⇒ rgt)||2360||no||3.0||1040||tilting||YES||4000||8.0||5||no|
|Sony A7R III (⇒ lft)||3686||no||3.0||1440||tilting||YES||8000||10.0||no||YES|
|Canon 77D (⇒ lft | rgt)||optical||YES||3.0||1040||swivel||YES||4000||6.0||12||no|
|Canon M6 (⇒ lft | rgt)||no||no||3.0||1040||tilting||YES||4000||9.0||5||no|
|Canon T7i (⇒ lft | rgt)||optical||no||3.0||1040||swivel||YES||4000||6.0||12||no|
|Canon M5 (⇒ lft | rgt)||2360||no||3.2||1620||tilting||YES||4000||9.0||5||no|
|Fujifilm X100F (⇒ lft | rgt)||2360||no||3.0||1040||fixed||no||4000||8.0||4.6||no|
|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||no|
|Fujifilm X-A3 (⇒ lft | rgt)||no||no||3.0||1040||tilting||YES||4000||6.0||7||no|
|Fujifilm X-E2S (⇒ lft | rgt)||2360||no||3.0||1040||fixed||no||4000||7.0||7||no|
|Fujifilm X-T10 (⇒ lft | rgt)||2360||no||3.0||920||tilting||no||4000||8.0||5||no|
|Nikon D850 (⇒ lft | rgt)||optical||YES||3.2||2359||tilting||YES||8000||9.0||no||no|
|Sony A9 (⇒ lft | rgt)||3686||no||3.0||1440||tilting||YES||8000||20.0||no||YES|
|Sony A99 II (⇒ lft | rgt)||2400||YES||3.0||1229||tilting||no||8000||12.0||no||YES|
|Sony A7R II (⇒ lft | rgt)||2400||no||3.0||1229||tilting||no||8000||5.0||no||YES|
|Sony A7S II (⇒ lft | rgt)||2400||no||3.0||1229||tilting||no||8000||5.0||no||YES|
Both the X-T20 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 X-T20 replaced the earlier Fujifilm X-T10, while the A7R III followed on from the Sony A7R II.
So what conclusions can be drawn? Which of the two cameras – the Fujifilm X-T20 or the Sony A7R III – has the upper hand? A synthesis of the relative strong points of each of the models is listed below.
Arguments in favor of the Fujifilm X-T20:
- More compact: Is smaller (118x83mm vs 127x96mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 267g or 41 percent) and hence easier to carry around.
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- More affordable: Was introduced into a lower priced category (72 percent cheaper at launch).
- More heavily discounted: Has been on the market for longer (launched in January 2017).
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.
- 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).
- 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.
- Longer lasting: Gets more shots (650 versus 350) 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 number of relative strengths (bullet points above) is taken as a guide, the A7R III is the clear winner of the contest (11 : 5 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.
In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains incomplete and does no justice, for example, to the way the X-T20 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. The detailed reviews can be accessed, respectively, on the websites of cameralabs.com, dpreview.com, ephotozine.com, imaging-resource.com, and photographyblog.com.
|Fujifilm X-T20 (⇒ rgt)||HiRec||82/100 Silver||5/5||..||4.5/5||2017||899||latest||check|
|Sony A7R III (⇒ lft)||HiRec||90/100 Gold||..||..||..||2017||3,199||latest||check|
|Canon 77D (⇒ lft | rgt)||..||82/100 Silver||4.5/5||..||4/5||2017||899||latest||check|
|Canon M6 (⇒ lft | rgt)||-||80/100 Silver||4/5||4.5/5||4/5||2017||779||latest||check|
|Canon T7i (⇒ lft | rgt)||..||80/100 Gold||4.5/5||..||4/5||2017||749||latest||check|
|Canon M5 (⇒ lft | rgt)||Rec||82/100 Silver||4/5||4.5/5||4/5||2016||979||latest||check|
|Fujifilm X100F (⇒ lft | rgt)||Rec||83/100 Gold||4.5/5||..||4.5/5||2017||1,299||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 X-E2S (⇒ lft | rgt)||-||77/100||4.5/5||-||4.5/5||2016||699||discont.||check|
|Fujifilm X-T10 (⇒ lft | rgt)||HiRec||80/100 Silver||5/5||4/5||5/5||2015||799||discont.||check|
|Nikon D850 (⇒ lft | rgt)||HiRec||89/100 Gold||4.5/5||..||5/5||2017||3,299||latest||check|
|Sony A9 (⇒ lft | rgt)||..||89/100 Gold||5/5||5/5||5/5||2017||4,499||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||3,199||discont.||check|
|Sony A7S II (⇒ lft | rgt)||Rec||-||4.5/5||5/5||5/5||2015||2,999||latest||check|
The review scores listed above should be treated with care, though. The assessments were made in relation to similar cameras of the same technological generation. Hence, a score should always be seen in the context of the camera's market launch date and its price, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, please note that some of the review sites have changed their methodology and reporting over time.
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