Sony A7R III versus Fujifilm X100
The Sony Alpha A7R III and the Fujifilm FinePix X100 are two enthusiast cameras that were announced, respectively, in October 2017 and September 2010. The A7R III is a mirrorless interchangeable lens camera, while the X100 is a fixed lens compact. The cameras are based on a full frame (A7R III) and an APS-C (X100) sensor. The Sony has a resolution of 42.2 megapixel, whereas the Fujifilm provides 12.2 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: Sony A7R III vs Fujifilm X100
The physical size and weight of the Sony A7R III and the Fujifilm X100 are illustrated 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 toggle the display 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 A7R III – represents the basis or 100 percent 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 Fujifilm X100 is notably smaller (22 percent) than the Sony A7R III. It is worth mentioning in this context that the A7R III is splash and dust resistant, while the X100 does not feature any corresponding weather-sealing.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the X100 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.
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|
|Sony A7R III»||5.0 in||3.8 in||2.9 in||22.9 oz||650||Y||Oct 2017||3,199|
|Fujifilm X100«||5.0 in||3.0 in||2.1 in||15.7 oz||300||n||Sep 2010||1,199||-|
|Canon G1 X« »||4.6 in||3.2 in||2.6 in||18.8 oz||250||n||Jan 2012||799||-|
|Fujifilm X30« »||4.7 in||2.8 in||2.4 in||14.9 oz||470||n||Aug 2014||599|
|Fujifilm X100S« »||5.0 in||2.9 in||2.1 in||15.7 oz||330||n||Jan 2013||1,299||-|
|Hasselblad X1D« »||5.9 in||3.9 in||2.8 in||25.6 oz||..||Y||Jun 2016||8,995|
|Panasonic LX100« »||4.5 in||2.6 in||2.2 in||13.9 oz||300||n||Sep 2014||899|
|Panasonic GH1« »||4.9 in||3.5 in||1.8 in||13.6 oz||300||n||Mar 2009||1,499||-|
|Sony A7 III« »||5.0 in||3.8 in||2.9 in||22.9 oz||610||Y||Feb 2018||1,999|
|Sony A9« »||5.0 in||3.8 in||2.5 in||23.7 oz||650||Y||Apr 2017||4,499|
|Sony A99 II« »||5.6 in||4.1 in||3.0 in||29.9 oz||490||Y||Sep 2016||3,199|
|Sony A6500« »||4.7 in||2.6 in||2.1 in||16.0 oz||350||Y||Oct 2016||1,399|
|Sony A7R II« »||5.0 in||3.8 in||2.4 in||22.0 oz||290||Y||Jun 2015||3,199||-|
|Sony A7S II« »||5.0 in||3.8 in||2.4 in||22.1 oz||370||Y||Sep 2015||2,999|
|Sony A7 II« »||5.0 in||3.8 in||2.4 in||21.1 oz||350||Y||Nov 2014||1,999||-|
|Sony A7R« »||5.0 in||3.7 in||1.9 in||16.4 oz||340||Y||Oct 2013||2,299||-|
|Sony A99« »||5.8 in||4.4 in||3.1 in||28.6 oz||500||Y||Sep 2012||2,799||-|
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 X100 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: Sony A7R III vs Fujifilm X100
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. 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 Sony A7R III features a full frame sensor and the Fujifilm X100 an APS-C sensor. The sensor area in the X100 is 57 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 1.5. 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 X100 (12.2MP), but the A7R III has smaller individual pixels (pixel pitch of 4.52μm versus 5.53μm for the X100). However, the A7R III is a somewhat more recent model (by 7 years and 1 month) than the X100, and its sensor might have benefitted from technological advances during this time that enhance the light gathering capacity of its pixels. 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 X100, 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. Of the two cameras under review, the A7R III provides substantially higher image quality than the X100, with an overall score that is 27 points higher. This advantage is based on 3.1 bits higher color depth, 2.3 EV in additional dynamic range, and 1.8 stops in additional low light sensitivity. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|Sony A7R III»||Full Frame||42.2||7952||5304||4K/30p||26.0||14.7||3523||100|
|Canon G1 X« »||1.5-inch||14.2||4352||3264||1080/24p||21.7||10.8||644||60|
|Fujifilm X30« »||2/3||12.0||4000||3000||1080/60p||-||-||-||-|
|Fujifilm X100S« »||APS-C||16.0||4896||3264||1080/60p||-||-||-||-|
|Hasselblad X1D« »||Medium Format||51.3||8272||6200||1080/25p||26.2||14.8||4489||102|
|Panasonic LX100« »||Four Thirds||12.7||4112||3088||4K/30p||22.3||12.5||553||67|
|Panasonic GH1« »||Four Thirds||12.0||4000||3000||1080/24p||21.6||11.6||772||64|
|Sony A7 III« »||Full Frame||24.0||6000||4000||4K/30p||25.0||14.7||3730||96|
|Sony A9« »||Full Frame||24.0||6000||4000||4K/30p||24.9||13.3||3517||92|
|Sony A99 II« »||Full Frame||42.2||7952||5304||4K/30p||25.4||13.4||2317||92|
|Sony A6500« »||APS-C||24.0||6000||4000||4K/30p||24.5||13.7||1405||85|
|Sony A7R II« »||Full Frame||42.2||7952||5304||4K/30p||26.0||13.9||3434||98|
|Sony A7S II« »||Full Frame||12.0||4240||2832||4K/30p||23.6||13.3||2993||85|
|Sony A7 II« »||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90|
|Sony A7R« »||Full Frame||36.2||7360||4912||1080/60p||25.6||14.1||2746||95|
|Sony A99« »||Full Frame||24.0||6000||4000||1080/60p||25.0||14.0||1555||89|
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 higher video resolution than the X100. It can shoot video footage at 4K/30p, while the Fujifilm is limited to 720/30p.
Feature comparison: Sony A7R III vs Fujifilm X100
Beyond body and sensor, cameras can and do differ across a range of features. The two cameras under consideration 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 X100 (3686k vs 1440k dots). The following table reports on some other key feature differences and similarities of the Sony A7R III, the Fujifilm X100, and comparable cameras. If you need more detail on the specs, you can find comprehensive listings, for example, in the dpreview camera hub.
|Sony A7R III»||3686||n||3.0||1440||tilting||Y||8000||10.0||n||Y|
|Canon G1 X« »||optical||n||3.0||922||Swivel||n||4000||1.9||Y||Y|
|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|
|Hasselblad X1D« »||2360||n||3.0||920||fixed||Y||2000||2.3||n||n|
|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 A7 III« »||2359||n||3.0||922||tilting||Y||8000||10.0||n||Y|
|Sony A9« »||3686||n||3.0||1440||tilting||Y||8000||20.0||n||Y|
|Sony A99 II« »||2400||Y||3.0||1229||full-flex||n||8000||12.0||n||Y|
|Sony A6500« »||2300||n||3.0||922||tilting||Y||4000||11.0||Y||Y|
|Sony A7R II« »||2400||n||3.0||1229||tilting||n||8000||5.0||n||Y|
|Sony A7S II« »||2400||n||3.0||1229||tilting||n||8000||5.0||n||Y|
|Sony A7 II« »||2400||n||3.0||1230||tilting||n||8000||5.0||n||Y|
|Sony A7R« »||2400||n||3.0||1230||tilting||n||8000||4.0||n||n|
|Sony A99« »||2359||Y||3.0||1229||full-flex||n||8000||6.0||n||Y|
The A7R III is a current model that online retailers, such as amazon, will have in stock. In contrast, the X100 has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the X100 was succeeded by the Fujifilm X100S.
Review summary: Sony A7R III vs Fujifilm X100
So what conclusions can be drawn? Which of the two cameras – the Sony A7R III or the Fujifilm X100 – has the upper hand? A synthesis of the relative strong points of each of the models is listed below.
Arguments in favor of the Sony Alpha A7R III:
- More detail: Offers more megapixels (42.2 vs 12.2MP) with a 86% higher linear resolution.
- High quality composites: Can combine several shots after pixel-shifting its sensor.
- Better image quality: Scores substantially higher (27 points) in the DXO overall assessment.
- Richer colors: Generates images with noticeably better colors (3.1 bits more color depth).
- More dynamic range: Captures a larger spectrum of light and dark details (2.3 EV of extra DR).
- Better low-light sensitivity: Requires less light for good images (1.8 stops ISO advantage).
- Better video: Provides higher definition movie capture (4K/30p vs 720/30p).
- More detailed viewfinder: Has higher resolution electronic viewfinder (3686k 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 (1440k vs 460k dots).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
- Faster shutter: Has higher mechanical shutter speed (8000/sec vs 4000/sec) to freeze action.
- Faster burst: Shoots at higher frequency (10 vs 5 flaps/sec) to capture the decisive moment.
- More flexible: Accepts interchangeable lenses, so that lens characteristics can be altered.
- Longer lasting: Can take more shots (650 versus 300) on a single battery charge.
- Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
- Sharper images: Has hand-shake reducing image stabilization build-in.
- More modern: Reflects 7 years and 1 month of technical progress since the X100 launch.
Reasons to prefer the Fujifilm FinePix X100:
- Ready to shoot: Has an integrated lens, whereas the A7R III necessitates an extra lens.
- More compact: Is smaller (126x75mm vs 127x96mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight even though it has a lens build in (unlike the A7R III).
- Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
- More affordable: Was introduced at a lower price, despite coming with a build-in lens.
- More heavily discounted: Has been around for much longer (launched in September 2010).
If the number of relative strengths (bullet points above) is taken as a guide, the A7R III is the clear winner of the match-up (19 : 6 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.
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 A7R III and the X100 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.
|Sony A7R III»||HiRec||90/100||4.5/5||5/5||5/5||Oct 2017||3,199|
|Fujifilm X100«||-||75/100||4/5||4/5||5/5||Sep 2010||1,199||-|
|Canon G1 X« »||Rec||76/100||4/5||4/5||4.5/5||Jan 2012||799||-|
|Fujifilm X30« »||-||76/100||4.5/5||4/5||4.5/5||Aug 2014||599|
|Fujifilm X100S« »||HiRec||81/100||4.5/5||4/5||5/5||Jan 2013||1,299||-|
|Hasselblad X1D« »||rev||-||-||-||4/5||Jun 2016||8,995|
|Panasonic LX100« »||HiRec||85/100||5/5||4/5||5/5||Sep 2014||899|
|Panasonic GH1« »||HiRec||72/100||4.5/5||5/5||4.5/5||Mar 2009||1,499||-|
|Sony A7 III« »||HiRec||89/100||5/5||-||5/5||Feb 2018||1,999|
|Sony A9« »||HiRec||89/100||5/5||5/5||5/5||Apr 2017||4,499|
|Sony A99 II« »||-||85/100||4.5/5||4.5/5||4.5/5||Sep 2016||3,199|
|Sony A6500« »||HiRec||85/100||4.5/5||5/5||4.5/5||Oct 2016||1,399|
|Sony A7R II« »||HiRec||90/100||5/5||4.5/5||5/5||Jun 2015||3,199||-|
|Sony A7S II« »||Rec||-||4.5/5||5/5||5/5||Sep 2015||2,999|
|Sony A7 II« »||Rec||82/100||4.5/5||5/5||5/5||Nov 2014||1,999||-|
|Sony A7R« »||HiRec||82/100||4.5/5||5/5||5/5||Oct 2013||2,299||-|
|Sony A99« »||-||84/100||4.5/5||rev||4.5/5||Sep 2012||2,799||-|
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.
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