Sony A7R III vs RX100
The Sony Alpha A7R III and the Sony Cyber-shot DSC-RX100 are two digital cameras that were officially introduced, respectively, in October 2017 and June 2012. The A7R III is a mirrorless interchangeable lens camera, while the RX100 is a fixed lens compact. The cameras are based on a full frame (A7R III) and an one-inch (RX100) sensor. The A7R III has a resolution of 42.2 megapixels, whereas the RX100 provides 20 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Sony A7R III||Sony RX100|
|Mirrorless system camera||Fixed lens compact camera|
|Sony E mount lenses||28-100mm f/1.8-4.9|
|42.2 MP, Full Frame Sensor||20 MP, 1" Sensor|
|4K/30p Video||1080/60p Video|
|ISO 100-32000 (50-102400)||ISO 100-6400 (100-25600)|
|Electronic viewfinder (3686k dots)||No viewfinder, LCD framing|
|3.0" LCD, 1440k dots||3.0" LCD, 1229k dots|
|Tilting touchscreen||Fixed screen (not touch-sensitive)|
|10 shutter flaps per second||10 shutter flaps per second|
|In-body stabilization||Lens-based stabilization|
|Weathersealed body||Not weather sealed|
|650 shots per battery charge||330 shots per battery charge|
|127 x 96 x 74 mm, 650 g||102 x 58 x 36 mm, 240 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Sony Alpha A7R III and the Sony Cyber-shot DSC-RX100? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.
Body comparison: Sony A7R III vs RX100
The side-by-side display below illustrates the physical size and weight of the Sony A7R III and the Sony RX100. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All size dimensions are rounded to the nearest millimeter.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony RX100 is considerably smaller (51 percent) than the Sony A7R III. It is worth mentioning in this context that the A7R III is splash and dust resistant, while the RX100 does not feature any corresponding weather-sealing.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the RX100 has a lens built 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 compare the optics available for the A7R III and their specifications in the Sony FE Lens Catalog.
Concerning battery life, the A7R III gets 650 shots out of its NP-FZ100 battery, while the RX100 can take 330 images on a single charge of its NP-BX1 power pack. The battery packs of both cameras can be charged via USB, which can be very convenient when travelling.
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.
|Sony A7R III»||5.0 in||3.8 in||2.9 in||22.9 oz||650||Y||Oct 2017||3,199||Sony A7R III|
|Sony RX100«||4.0 in||2.3 in||1.4 in||8.5 oz||330||n||Jun 2012||649||-||Sony RX100|
|Canon G9 X Mark II« »||3.9 in||2.3 in||1.2 in||7.3 oz||235||n||Jan 2017||529||Canon G9 X Mark II|
|Canon G9 X« »||3.9 in||2.3 in||1.2 in||7.4 oz||220||n||Oct 2015||529||-||Canon G9 X|
|Nikon Z7« »||5.3 in||4.0 in||2.6 in||23.8 oz||330||Y||Aug 2018||3,399||Nikon Z7|
|Pentax K-1« »||5.4 in||4.3 in||3.4 in||35.6 oz||760||Y||Feb 2016||1,799||-||Pentax K-1|
|Sony A7 III« »||5.0 in||3.8 in||2.9 in||22.9 oz||610||Y||Feb 2018||1,999||Sony A7 III|
|Sony A9« »||5.0 in||3.8 in||2.5 in||23.7 oz||650||Y||Apr 2017||4,499||Sony A9|
|Sony A99 II« »||5.6 in||4.1 in||3.0 in||29.9 oz||490||Y||Sep 2016||3,199||Sony A99 II|
|Sony A7R II« »||5.0 in||3.8 in||2.4 in||22.0 oz||290||Y||Jun 2015||3,199||-||Sony A7R II|
|Sony A7S II« »||5.0 in||3.8 in||2.4 in||22.1 oz||370||Y||Sep 2015||2,999||Sony A7S II|
|Sony A7 II« »||5.0 in||3.8 in||2.4 in||21.1 oz||350||Y||Nov 2014||1,999||-||Sony A7 II|
|Sony RX100 III« »||4.0 in||2.3 in||1.6 in||10.2 oz||320||n||May 2014||799||-||Sony RX100 III|
|Sony A7R« »||5.0 in||3.7 in||1.9 in||16.4 oz||340||Y||Oct 2013||2,299||-||Sony A7R|
|Sony RX10« »||5.1 in||3.5 in||4.0 in||28.7 oz||420||Y||Oct 2013||1,299||-||Sony RX10|
|Sony RX100 II« »||4.0 in||2.3 in||1.5 in||9.9 oz||350||n||Jun 2013||749||-||Sony RX100 II|
|Sony A99« »||5.8 in||4.4 in||3.1 in||28.6 oz||500||Y||Sep 2012||2,799||-||Sony A99|
|Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.|
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. The RX100 was launched at a lower price than the A7R III, despite having a lens built 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.
Sensor comparison: Sony A7R III vs RX100
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. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors tend to be more expensive and lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Sony A7R III features a full frame sensor and the Sony RX100 an one-inch sensor. The sensor area in the RX100 is 87 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 2.7. 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 RX100 (20MP), but the A7R III nevertheless has larger individual pixels (pixel pitch of 4.52μm versus 2.41μm for the RX100) due to its larger sensor. Moreover, the A7R III is a much more recent model (by 5 years and 4 months) than the RX100, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels. Coming back to sensor resolution, it should be mentioned that the A7R III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Sony A7R III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7R III for good quality output (200 dots per inch) amounts to 39.8 x 26.5 inch or 101 x 67.4 cm, for very good quality (250 dpi) 31.8 x 21.2 inch or 80.8 x 53.9 cm, and for excellent quality (300 dpi) 26.5 x 17.7 inch or 67.3 x 44.9 cm. The corresponding values for the Sony RX100 are 27.4 x 18.2 inch or 69.5 x 46.3 cm for good quality, 21.9 x 14.6 inch or 55.6 x 37.1 cm for very good quality, and 18.2 x 12.2 inch or 46.3 x 30.9 cm for excellent quality prints.
The A7R III has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
Unlike the RX100, 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).
The Sony Alpha A7R III has a native sensitivity range from ISO 100 to ISO 32000, which can be extended to ISO 50-102400. The corresponding ISO settings for the Sony Cyber-shot DSC-RX100 are ISO 100 to ISO 6400, with the possibility to increase the ISO range to 100-25600.
For many 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 RX100, with an overall score that is 34 points higher. This advantage is based on 3.4 bits higher color depth, 2.3 EV in additional dynamic range, and 3.2 stops in additional low light sensitivity. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
|Sony A7R III»||Full Frame||42.2||7952||5304||4K/30p||26.0||14.7||3523||100||Sony A7R III|
|Sony RX100«||1-inch||20.0||5472||3648||1080/60p||22.6||12.4||390||66||Sony RX100|
|Canon G9 X Mark II« »||1-inch||20.0||5472||3648||1080/60p||21.9||12.5||522||65||Canon G9 X Mark II|
|Canon G9 X« »||1-inch||20.0||5472||3648||1080/60p||21.5||12.3||495||63||Canon G9 X|
|Nikon Z7« »||Full Frame||45.4||8256||5504||4K/30p||26.3||14.6||2668||99||Nikon Z7|
|Pentax K-1« »||Full Frame||36.2||7360||4912||1080/60i||25.4||14.6||3280||96||Pentax K-1|
|Sony A7 III« »||Full Frame||24.0||6000||4000||4K/30p||25.0||14.7||3730||96||Sony A7 III|
|Sony A9« »||Full Frame||24.0||6000||4000||4K/30p||24.9||13.3||3517||92||Sony A9|
|Sony A99 II« »||Full Frame||42.2||7952||5304||4K/30p||25.4||13.4||2317||92||Sony A99 II|
|Sony A7R II« »||Full Frame||42.2||7952||5304||4K/30p||26.0||13.9||3434||98||Sony A7R II|
|Sony A7S II« »||Full Frame||12.0||4240||2832||4K/30p||23.6||13.3||2993||85||Sony A7S II|
|Sony A7 II« »||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90||Sony A7 II|
|Sony RX100 III« »||1-inch||20.0||5472||3648||1080/60p||22.4||12.3||495||67||Sony RX100 III|
|Sony A7R« »||Full Frame||36.2||7360||4912||1080/60p||25.6||14.1||2746||95||Sony A7R|
|Sony RX10« »||1-inch||20.0||5472||3648||1080/60p||22.9||12.6||474||69||Sony RX10|
|Sony RX100 II« »||1-inch||20.0||5472||3648||1080/60p||22.5||12.4||483||67||Sony RX100 II|
|Sony A99« »||Full Frame||24.0||6000||4000||1080/60p||25.0||14.0||1555||89||Sony A99|
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, but the A7R III provides a higher video resolution than the RX100. It can shoot video footage at 4K/30p, while the RX100 is limited to 1080/60p.
Feature comparison: Sony A7R III vs RX100
Apart from body and sensor, cameras can and do differ across a range of features. For example, the A7R III has an electronic viewfinder (3686k dots), which can be very helpful when shooting in bright sunlight. In contrast, the RX100 relies on live view and the rear LCD for framing. The table below summarizes some of the other core capabilities of the Sony A7R III and Sony RX100 in connection with corresponding information for a sample of similar cameras.
|Sony A7R III»||3686||n||3.0||1440||tilting||Y||1/8000s||10.0||n||Y||Sony A7R III|
|Sony RX100«||-||n||3.0||1229||fixed||n||1/2000s||10.0||Y||Y||Sony RX100|
|Canon G9 X Mark II« »||-||n||3.0||1040||fixed||Y||1/2000s||8.2||Y||Y||Canon G9 X Mark II|
|Canon G9 X« »||-||n||3.0||1040||fixed||Y||1/2000s||6.0||Y||Y||Canon G9 X|
|Nikon Z7« »||3690||Y||3.2||2100||tilting||Y||1/8000s||9.0||n||Y||Nikon Z7|
|Pentax K-1« »||optical||Y||3.2||1037||full-flex||n||1/8000s||4.4||n||Y||Pentax K-1|
|Sony A7 III« »||2359||n||3.0||922||tilting||Y||1/8000s||10.0||n||Y||Sony A7 III|
|Sony A9« »||3686||n||3.0||1440||tilting||Y||1/8000s||20.0||n||Y||Sony A9|
|Sony A99 II« »||2400||Y||3.0||1229||full-flex||n||1/8000s||12.0||n||Y||Sony A99 II|
|Sony A7R II« »||2400||n||3.0||1229||tilting||n||1/8000s||5.0||n||Y||Sony A7R II|
|Sony A7S II« »||2400||n||3.0||1229||tilting||n||1/8000s||5.0||n||Y||Sony A7S II|
|Sony A7 II« »||2400||n||3.0||1230||tilting||n||1/8000s||5.0||n||Y||Sony A7 II|
|Sony RX100 III« »||1440||n||3.0||1229||tilting||n||1/2000s||10.0||Y||Y||Sony RX100 III|
|Sony A7R« »||2400||n||3.0||1230||tilting||n||1/8000s||4.0||n||n||Sony A7R|
|Sony RX10« »||1440||Y||3.0||1229||tilting||n||1/3200s||10.0||Y||Y||Sony RX10|
|Sony RX100 II« »||-||n||3.0||1229||tilting||n||1/2000s||10.0||Y||Y||Sony RX100 II|
|Sony A99« »||2359||Y||3.0||1229||full-flex||n||1/8000s||6.0||n||Y||Sony A99|
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The A7R III has a touchscreen, while the RX100 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.
The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, the A7R III is one of those camera that have an additional electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).
The Sony A7R III has an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.
Concerning the storage of imaging data, both the A7R III and the RX100 write their files to SDXC or Memory Stick PRO Duo cards. The A7R III features dual card slots, which can be very useful in case a memory card fails. In contrast, the RX100 only has one slot. The A7R III supports UHS-II cards on its first slot and UHS-I on its second one, while the RX100 cannot take advantage of Ultra High Speed SD cards.
Connectivity comparison: Sony A7R III vs RX100
For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Sony Alpha A7R III and Sony Cyber-shot DSC-RX100 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Sony A7R III»||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y||Sony A7R III|
|Sony RX100«||-||stereo||mono||-||-||micro||2.0||-||-||-||Sony RX100|
|Canon G9 X Mark II« »||-||stereo||mono||-||-||micro||2.0||Y||Y||Y||Canon G9 X Mark II|
|Canon G9 X« »||-||stereo||mono||-||-||micro||2.0||Y||Y||-||Canon G9 X|
|Nikon Z7« »||Y||stereo||mono||Y||Y||micro||3.1||Y||-||Y||Nikon Z7|
|Pentax K-1« »||Y||stereo||mono||Y||Y||micro||2.0||Y||-||-||Pentax K-1|
|Sony A7 III« »||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y||Sony A7 III|
|Sony A9« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||Y||Sony A9|
|Sony A99 II« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||Y||Sony A99 II|
|Sony A7R II« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7R II|
|Sony A7S II« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7S II|
|Sony A7 II« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7 II|
|Sony RX100 III« »||-||stereo||mono||-||-||micro||2.0||Y||Y||-||Sony RX100 III|
|Sony A7R« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7R|
|Sony RX10« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony RX10|
|Sony RX100 II« »||Y||stereo||mono||-||-||micro||2.0||Y||Y||-||Sony RX100 II|
|Sony A99« »||Y||stereo||mono||Y||Y||mini||2.0||-||-||-||Sony A99|
It is notable that the A7R III has a hotshoe, while the RX100 does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.
Studio photographers will appreciate that the Sony A7R III (unlike the RX100) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
The A7R III is a recent model that features in the current product line-up of Sony. In contrast, the RX100 has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the RX100 was succeeded by the Sony RX100 II. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Sony website.
Review summary: Sony A7R III vs RX100
So what conclusions can be drawn? Is the Sony A7R III better than the Sony RX100 or vice versa? The listing below highlights the relative strengths of the two models.
Advantages of the Sony Alpha A7R III:
- More detail: Offers more megapixels (42.2 vs 20MP) with a 45% higher linear resolution.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- High quality composites: Can combine several shots after pixel-shifting its sensor.
- Better image quality: Scores substantially higher (34 points) in the DXO overall assessment.
- Richer colors: Generates images with noticeably better colors (3.4 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 (3.2 stops ISO advantage).
- Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
- Better live-view autofocus: Features on-sensor phase-detection for quicker and more confident autofocus.
- Better sound: Can connect to an external microphone for higher quality sound recording.
- Better sound control: Has a headphone port that enables audio monitoring while recording.
- Easier framing: Has an electronic viewfinder for image framing and settings control.
- More detailed LCD: Has a higher resolution rear screen (1440k vs 1229k 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 (1/8000s vs 1/2000s) to freeze action.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- More flexible: Accepts interchangeable lenses, so that lens characteristics can be altered.
- Longer lasting: Can take more shots (650 versus 330) on a single battery charge.
- Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
- Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
- Faster data transfer: Supports a more advanced USB protocol (3.1 vs 2.0).
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- Faster buffer clearing: Supports Ultra High Speed (UHS-II and UHS-I) SDXC cards.
- More modern: Reflects 5 years and 4 months of technical progress since the RX100 launch.
Reasons to prefer the Sony Cyber-shot DSC-RX100:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Ready to shoot: Has an integrated lens, whereas the A7R III necessitates an extra lens.
- More compact: Is smaller (102x58mm vs 127x96mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight even though it has a lens built 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 built-in lens.
- More heavily discounted: Has been around for much longer (launched in June 2012).
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 (30 : 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. A professional wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro shooter. Hence, the decision which camera is best and worth buying is often a very personal one.
How about other alternatives? Do the specifications of the Sony A7R III and the Sony RX100 place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best Travel-Zoom Camera listings whether the two cameras rank among the cream of the crop.
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 A7R III or the RX100 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.
Expert reviews: Sony A7R III vs RX100
This is why hands-on reviews by experts are important. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.
|Sony A7R III»||+ +||90/100||4.5/5||5/5||5/5||Oct 2017||3,199||Sony A7R III|
|Sony RX100«||+ +||78/100||4/5||5/5||5/5||Jun 2012||649||-||Sony RX100|
|Canon G9 X Mark II« »||-||75/100||4.5/5||4.5/5||4.5/5||Jan 2017||529||Canon G9 X Mark II|
|Canon G9 X« »||+ +||-||4.5/5||4/5||4.5/5||Oct 2015||529||-||Canon G9 X|
|Nikon Z7« »||+||89/100||4.5/5||4.5/5||5/5||Aug 2018||3,399||Nikon Z7|
|Pentax K-1« »||-||84/100||5/5||4.5/5||5/5||Feb 2016||1,799||-||Pentax K-1|
|Sony A7 III« »||+ +||89/100||5/5||5/5||5/5||Feb 2018||1,999||Sony A7 III|
|Sony A9« »||+ +||89/100||5/5||5/5||5/5||Apr 2017||4,499||Sony A9|
|Sony A99 II« »||-||85/100||4.5/5||4.5/5||4.5/5||Sep 2016||3,199||Sony A99 II|
|Sony A7R II« »||+ +||90/100||5/5||4.5/5||5/5||Jun 2015||3,199||-||Sony A7R II|
|Sony A7S II« »||+||-||4.5/5||5/5||5/5||Sep 2015||2,999||Sony A7S II|
|Sony A7 II« »||+||82/100||4.5/5||5/5||5/5||Nov 2014||1,999||-||Sony A7 II|
|Sony RX100 III« »||+ +||82/100||4.5/5||4.5/5||5/5||May 2014||799||-||Sony RX100 III|
|Sony A7R« »||+ +||82/100||4.5/5||5/5||5/5||Oct 2013||2,299||-||Sony A7R|
|Sony RX10« »||+||80/100||4.5/5||4.5/5||4.5/5||Oct 2013||1,299||-||Sony RX10|
|Sony RX100 II« »||+ +||79/100||4.5/5||5/5||4.5/5||Jun 2013||749||-||Sony RX100 II|
|Sony A99« »||-||84/100||4.5/5||o||4.5/5||Sep 2012||2,799||-||Sony A99|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (-) not available.|
The above review scores should be interpreted with care, though. The ratings are only valid when referring 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? 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.
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Specifications: Sony A7R III vs Sony RX100
Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.
|Camera Model||Sony A7R III||Sony RX100|
|Camera Type||Mirrorless system camera||Fixed lens compact camera|
|Camera Lens||Sony E mount lenses||28-100mm f/1.8-4.9|
|Launch Date||October 2017||June 2012|
|Launch Price||USD 3199||USD 649|
|Sensor Specs||Sony A7R III||Sony RX100|
|Sensor Format||Full Frame Sensor||1" Sensor|
|Sensor Size||35.9 x 24.0 mm||13.2 x 8.8 mm|
|Sensor Area||861.6 mm2||116.16 mm2|
|Sensor Diagonal||43.2 mm||15.9 mm|
|Sensor Resolution||42.2 Megapixels||20 Megapixels|
|Image Resolution||7952 x 5304 pixels||5472 x 3648 pixels|
|Pixel Pitch||4.52 μm||2.41 μm|
|Pixel Density||4.90 MP/cm2||17.18 MP/cm2|
|Moiré control||no AA filter||Anti-Alias filter|
|Movie Capability||4K/30p Video||1080/60p Video|
|ISO Setting||100-32000 ISO||100-6400 ISO|
|ISO Boost||50-102400 ISO||100-25600 ISO|
|Image Processor||BIONZ X||BIONZ X|
|DXO Sensor Quality (score)||100||66|
|DXO Color Depth (bits)||26.0||22.6|
|DXO Dynamic Range (EV)||14.7||12.4|
|DXO Low Light (ISO)||3523||390|
|Screen Specs||Sony A7R III||Sony RX100|
|Viewfinder Type||Electronic viewfinder||No viewfinder|
|Viewfinder Field of View||100%|
|Viewfinder Resolution||3686k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0 inch||3.0 inch|
|LCD Resolution||1440k dots||1229k dots|
|LCD Attachment||Tilting screen||Fixed screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Sony A7R III||Sony RX100|
|Autofocus System||On-Sensor Phase-detect||Contrast-detect AF|
|Manual Focusing Aid||Focus Peaking||Focus Peaking|
|Max Shutter Speed (mechanical)||1/8000/s||1/2000/s|
|Continuous Shooting||10 shutter flaps/s||10 shutter flaps/s|
|Electronic Shutter||YES||no E-Shutter|
|Time-Lapse Photography||Intervalometer built-in||no Intervalometer|
|Image Stabilization||In-body stabilization||Lens-based stabilization|
|Fill Flash||no On-Board Flash||Build-in Flash|
|Storage Medium||MS or SDXC cards||MS or SDXC cards|
|Second Storage Option||Dual card slots||Single card slot|
|UHS card support||Single UHS-II||no|
|Connectivity Specs||Sony A7R III||Sony RX100|
|External Flash||Hotshoe||no Hotshoe|
|Studio Flash||PC Sync socket||no PC Sync|
|USB Connector||USB 3.1||USB 2.0|
|HDMI Port||micro HDMI||micro HDMI|
|Microphone Port||External MIC port||no MIC socket|
|Headphone Socket||Headphone port||no Headphone port|
|Wifi Support||Wifi built-in||no Wifi|
|Near-Field Communication||NFC built-in||no NFC|
|Bluetooth Support||Bluetooth built-in||no Bluetooth|
|Body Specs||Sony A7R III||Sony RX100|
|Environmental Sealing||Weathersealed body||Not weather sealed|
|Battery Type||NP-FZ100 power pack||NP-BX1 power pack|
|Battery Life (CIPA)||650 shots per charge||330 shots per charge|
|In-Camera Charging||USB charging||USB charging|
127 x 96 x 74 mm
(5.0 x 3.8 x 2.9 in)
102 x 58 x 36 mm
(4.0 x 2.3 x 1.4 in)
|Camera Weight||650 g (22.9 oz)||240 g (8.5 oz)|
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