Sony A7 III vs RX100 IV
The Sony Alpha A7 III and the Sony Cyber-shot DSC-RX100 IV are two digital cameras that were revealed to the public, respectively, in February 2018 and June 2015. The A7 III is a mirrorless interchangeable lens camera, while the RX100 IV is a fixed lens compact. The cameras are based on a full frame (A7 III) and an one-inch (RX100 IV) sensor. The A7 III has a resolution of 24 megapixels, whereas the RX100 IV provides 20 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Sony A7 III||Sony RX100 IV|
|Mirrorless system camera||Fixed lens compact camera|
|Sony E mount lenses||24-70mm f/1.8-2.8|
|24 MP, Full Frame Sensor||20 MP, 1" Sensor|
|4K/30p Video||4K/30p Video|
|ISO 100-51200 (50-204800)||ISO 125-12800 (80-25600)|
|Electronic viewfinder (2359k dots)||Electronic viewfinder (2359k dots)|
|3.0" LCD, 922k dots||3.0" LCD, 1228k dots|
|Tilting touchscreen||Tilting screen (not touch-sensitive)|
|10 shutter flaps per second||16 shutter flaps per second|
|In-body stabilization||Lens-based stabilization|
|Weathersealed body||Not weather sealed|
|610 shots per battery charge||280 shots per battery charge|
|127 x 96 x 74 mm, 650 g||102 x 58 x 41 mm, 298 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Sony Alpha A7 III and the Sony Cyber-shot DSC-RX100 IV? 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 A7 III vs RX100 IV
The side-by-side display below illustrates the physical size and weight of the Sony A7 III and the Sony RX100 IV. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All width, height and depth 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 IV is considerably smaller (51 percent) than the Sony A7 III. It is worth mentioning in this context that the A7 III is splash and dust resistant, while the RX100 IV does not feature any corresponding weather-sealing.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the RX100 IV has a lens built in, whereas the A7 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 A7 III and their specifications in the Sony FE Lens Catalog.
Concerning battery life, the A7 III gets 610 shots out of its NP-FZ100 battery, while the RX100 IV can take 280 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 table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you would like to visualize and compare a different camera combination, just use the right or left arrows in the table to switch to the respective camera. Alternatively, you can also navigate to the CAM-parator app and make your selection from the full list of cameras there.
|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 RX100 IV«||4.0 in||2.3 in||1.6 in||10.5 oz||280||n||Jun 2015||999||-||Sony RX100 IV|
|Canon 6D Mark II« »||5.7 in||4.4 in||3.0 in||27.0 oz||1200||Y||Jun 2017||1,999||Canon 6D Mark II|
|Canon G7 X« »||4.1 in||2.4 in||1.6 in||10.7 oz||210||n||Sep 2014||699||-||Canon G7 X|
|Nikon Z6« »||5.3 in||4.0 in||2.6 in||23.8 oz||310||Y||Aug 2018||1,999||Nikon Z6|
|Panasonic FZ1000« »||5.4 in||3.9 in||5.2 in||29.3 oz||360||n||Jun 2014||899||-||Panasonic FZ1000|
|Sony A7R IV« »||5.1 in||3.8 in||3.1 in||23.5 oz||670||Y||Jul 2019||3,499||Sony A7R IV|
|Sony RX100 VII« »||4.0 in||2.3 in||1.7 in||10.7 oz||260||n||Jul 2019||1,199||Sony RX100 VII|
|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 A9« »||5.0 in||3.8 in||2.5 in||23.7 oz||650||Y||Apr 2017||4,499||Sony A9|
|Sony RX100 V« »||4.0 in||2.3 in||1.6 in||10.5 oz||220||n||Oct 2016||999||Sony RX100 V|
|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 A7« »||5.0 in||3.7 in||1.9 in||16.7 oz||340||Y||Oct 2013||1,699||-||Sony A7|
|Sony A850« »||6.1 in||4.6 in||3.2 in||31.6 oz||880||Y||Aug 2009||1,999||-||Sony A850|
|Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.|
Any camera decision will obviously take relative prices into account. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The RX100 IV was launched at a lower price than the A7 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.
Sensor comparison: Sony A7 III vs RX100 IV
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. 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 tend to lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Sony A7 III features a full frame sensor and the Sony RX100 IV an one-inch sensor. The sensor area in the RX100 IV is 86 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 24MP, the A7 III offers a higher resolution than the RX100 IV (20MP), but the A7 III nevertheless has larger individual pixels (pixel pitch of 5.94μm versus 2.41μm for the RX100 IV) due to its larger sensor. Moreover, the A7 III is a much more recent model (by 2 years and 8 months) than the RX100 IV, 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 A7 III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Sony A7 III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7 III for good quality output (200 dots per inch) amounts to 30 x 20 inch or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inch or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inch or 50.8 x 33.9 cm. The corresponding values for the Sony RX100 IV 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 A7 III has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Sony Alpha A7 III has a native sensitivity range from ISO 100 to ISO 51200, which can be extended to ISO 50-204800. The corresponding ISO settings for the Sony Cyber-shot DSC-RX100 IV are ISO 125 to ISO 12800, with the possibility to increase the ISO range to 80-25600.
For many cameras, data on sensor performance has been reported by DXO Mark. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). Of the two cameras under review, the A7 III provides substantially higher image quality than the RX100 IV, with an overall score that is 26 points higher. This advantage is based on 2.2 bits higher color depth, 2.1 EV in additional dynamic range, and 2.7 stops in additional low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
|Sony A7 III»||Full Frame||24.0||6000||4000||4K/30p||25.0||14.7||3730||96||Sony A7 III|
|Sony RX100 IV«||1-inch||20.0||5472||3648||4K/30p||22.8||12.6||591||70||Sony RX100 IV|
|Canon 6D Mark II« »||Full Frame||26.0||6240||4160||1080/60p||24.4||11.9||2862||85||Canon 6D Mark II|
|Canon G7 X« »||1-inch||20.0||5472||3648||1080/60p||23.0||12.7||556||71||Canon G7 X|
|Nikon Z6« »||Full Frame||24.3||6048||4024||4K/30p||25.3||14.3||3299||95||Nikon Z6|
|Panasonic FZ1000« »||1-inch||20.0||5472||3648||4K/30p||22.1||11.7||517||64||Panasonic FZ1000|
|Sony A7R IV« »||Full Frame||60.2||9504||6336||4K/30p||-||-||-||-||Sony A7R IV|
|Sony RX100 VII« »||1-inch||20.0||5472||3648||4K/30p||-||-||-||-||Sony RX100 VII|
|Sony A7R III« »||Full Frame||42.2||7952||5304||4K/30p||26.0||14.7||3523||100||Sony A7R III|
|Sony A9« »||Full Frame||24.0||6000||4000||4K/30p||24.9||13.3||3517||92||Sony A9|
|Sony RX100 V« »||1-inch||20.0||5472||3648||4K/30p||22.8||12.4||586||70||Sony RX100 V|
|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 A7« »||Full Frame||24.0||6000||4000||1080/60p||24.8||14.2||2248||90||Sony A7|
|Sony A850« »||Full Frame||24.4||6048||4032||-||23.8||12.2||1415||79||Sony A850|
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, and both provide the same movie specifications (4K/30p).
Feature comparison: Sony A7 III vs RX100 IV
Apart from body and sensor, cameras can and do differ across a variety of features. The A7 III and the RX100 IV are similar in the sense that both feature an electronic viewfinder, which is helpful when framing images in bright sunlight. Moreover, their viewfinders offer an identical resolution of 2359k dots. The adjacent table lists some of the other core features of the Sony A7 III and Sony RX100 IV along with similar information for a selection of comparators.
|Sony A7 III»||2359||n||3.0||922||tilting||Y||1/8000s||10.0||n||Y||Sony A7 III|
|Sony RX100 IV«||2359||n||3.0||1228||tilting||n||1/2000s||16.0||Y||Y||Sony RX100 IV|
|Canon 6D Mark II« »||optical||Y||3.0||1040||swivel||Y||1/4000s||6.5||n||n||Canon 6D Mark II|
|Canon G7 X« »||-||n||3.0||1040||tilting||Y||1/2000s||6.5||Y||Y||Canon G7 X|
|Nikon Z6« »||3690||Y||3.2||2100||tilting||Y||1/8000s||12.0||n||Y||Nikon Z6|
|Panasonic FZ1000« »||2359||n||3.0||921||swivel||n||1/4000s||12.0||Y||Y||Panasonic FZ1000|
|Sony A7R IV« »||5760||n||3.0||1440||tilting||Y||1/8000s||10.0||n||Y||Sony A7R IV|
|Sony RX100 VII« »||2359||n||3.0||921||tilting||Y||1/2000s||90.0||Y||Y||Sony RX100 VII|
|Sony A7R III« »||3686||n||3.0||1440||tilting||Y||1/8000s||10.0||n||Y||Sony A7R III|
|Sony A9« »||3686||n||3.0||1440||tilting||Y||1/8000s||20.0||n||Y||Sony A9|
|Sony RX100 V« »||2359||n||3.0||1229||tilting||n||1/2000s||24.0||Y||Y||Sony RX100 V|
|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 A7« »||2400||n||3.0||1230||tilting||n||1/8000s||5.0||n||n||Sony A7|
|Sony A850« »||optical||Y||3.0||922||fixed||n||1/8000s||3.0||n||Y||Sony A850|
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The A7 III has a touchscreen, while the RX100 IV has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.The RX100 IV has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the A7 III does not have a selfie-screen.
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, both cameras under consideration feature an 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 A7 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 A7 III and the RX100 IV write their files to SDXC or Memory Stick PRO Duo cards. The A7 III features dual card slots, which can be very useful in case a memory card fails. In contrast, the RX100 IV only has one slot. The A7 III supports UHS-II cards (on its first slot), while the RX100 IV can use UHS-I cards.
Connectivity comparison: Sony A7 III vs RX100 IV
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 A7 III and Sony Cyber-shot DSC-RX100 IV and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Sony A7 III»||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y||Sony A7 III|
|Sony RX100 IV«||-||stereo||mono||-||-||micro||2.0||Y||Y||-||Sony RX100 IV|
|Canon 6D Mark II« »||Y||stereo||mono||Y||-||mini||2.0||Y||Y||Y||Canon 6D Mark II|
|Canon G7 X« »||-||stereo||mono||-||-||micro||2.0||Y||Y||-||Canon G7 X|
|Nikon Z6« »||Y||stereo||mono||Y||Y||micro||3.1||Y||-||Y||Nikon Z6|
|Panasonic FZ1000« »||Y||stereo||mono||Y||-||micro||2.0||Y||Y||-||Panasonic FZ1000|
|Sony A7R IV« »||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y||Sony A7R IV|
|Sony RX100 VII« »||-||stereo||mono||Y||-||micro||2.0||Y||Y||Y||Sony RX100 VII|
|Sony A7R III« »||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y||Sony A7R III|
|Sony A9« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||Y||Sony A9|
|Sony RX100 V« »||-||stereo||mono||-||-||micro||2.0||Y||Y||-||Sony RX100 V|
|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 A7« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7|
|Sony A850« »||Y||-||-||-||-||mini||2.0||-||-||-||Sony A850|
It is notable that the A7 III has a hotshoe, while the RX100 IV does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.
The A7 III is a recent model that features in the current product line-up of Sony. In contrast, the RX100 IV has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the RX100 IV was succeeded by the Sony RX100 IV. 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 A7 III vs RX100 IV
So what is the bottom line? Which of the two cameras – the Sony A7 III or the Sony RX100 IV – has the upper hand? Is one clearly better than the other? A synthesis of the relative strong points of each of the models is listed below.
Arguments in favor of the Sony Alpha A7 III:
- More detail: Offers more megapixels (24 vs 20MP) with a 10% higher linear resolution.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Better image quality: Scores substantially higher (26 points) in the DXO overall assessment.
- Richer colors: Generates images with noticeably better colors (2.2 bits more color depth).
- More dynamic range: Captures a larger spectrum of light and dark details (2.1 EV of extra DR).
- Better low-light sensitivity: Requires less light for good images (2.7 stops ISO advantage).
- Better live-view autofocus: Features on-sensor phase-detection for 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.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.22x).
- 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.
- 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 (610 versus 280) 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 wireless transfer: Supports Bluetooth for image sharing without cables.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
- More modern: Reflects 2 years and 8 months of technical progress since the RX100 IV launch.
Advantages of the Sony Cyber-shot DSC-RX100 IV:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- More detailed LCD: Has a higher resolution rear screen (1228k vs 922k dots).
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster burst: Shoots at higher frequency (16 vs 10 flaps/sec) to capture the decisive moment.
- Ready to shoot: Has an integrated lens, whereas the A7 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 A7 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 2015).
If the count of relative strengths (bullet points above) is taken as a measure, the A7 III is the clear winner of the match-up (22 : 10 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 wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports 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 A7 III and the Sony RX100 IV 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 A7 III or the RX100 IV perform in practice. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.
Expert reviews: Sony A7 III vs RX100 IV
This is where reviews by experts come in. The adjacent summary-table relays the overall verdicts of several of the most popular 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 A7 III»||+ +||89/100||5/5||5/5||5/5||Feb 2018||1,999||Sony A7 III|
|Sony RX100 IV«||+ +||85/100||4/5||4.5/5||4.5/5||Jun 2015||999||-||Sony RX100 IV|
|Canon 6D Mark II« »||+||80/100||4.5/5||4/5||4/5||Jun 2017||1,999||Canon 6D Mark II|
|Canon G7 X« »||+ +||77/100||4.5/5||3.5/5||4.5/5||Sep 2014||699||-||Canon G7 X|
|Nikon Z6« »||-||-||4.5/5||-||5/5||Aug 2018||1,999||Nikon Z6|
|Panasonic FZ1000« »||+ +||82/100||4.5/5||4.5/5||4.5/5||Jun 2014||899||-||Panasonic FZ1000|
|Sony A7R IV« »||-||-||-||-||-||Jul 2019||3,499||Sony A7R IV|
|Sony RX100 VII« »||-||-||-||-||-||Jul 2019||1,199||Sony RX100 VII|
|Sony A7R III« »||+ +||90/100||4.5/5||5/5||5/5||Oct 2017||3,199||Sony A7R III|
|Sony A9« »||+ +||89/100||5/5||5/5||5/5||Apr 2017||4,499||Sony A9|
|Sony RX100 V« »||+ +||83/100||4/5||5/5||4.5/5||Oct 2016||999||Sony RX100 V|
|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 A7« »||+ +||80/100||5/5||4.5/5||5/5||Oct 2013||1,699||-||Sony A7|
|Sony A850« »||-||75/100||-||4/5||4.5/5||Aug 2009||1,999||-||Sony A850|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (-) not available.|
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. 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. Also, please note that some of the review sites have changed their methodology and reporting over time.
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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon 1D X vs Sony RX100 IV
- Canon 5DS vs Sony A7 III
- Canon G9 X Mark II vs Sony A7 III
- Canon T5i vs Sony A7 III
- Canon XC10 vs Sony RX100 IV
- Leica X Typ 113 vs Sony RX100 IV
- Olympus E-M1X vs Sony A7 III
- Olympus E-PM2 vs Sony A7 III
- Panasonic G3 vs Sony A7 III
- Panasonic G7 vs Sony RX100 IV
- Ricoh GR III vs Sony RX100 IV
- Sony A7 II vs Sony A7 III
Specifications: Sony A7 III vs Sony RX100 IV
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 A7 III||Sony RX100 IV|
|Camera Type||Mirrorless system camera||Fixed lens compact camera|
|Camera Lens||Sony E mount lenses||24-70mm f/1.8-2.8|
|Launch Date||February 2018||June 2015|
|Launch Price||USD 1999||USD 999|
|Sensor Specs||Sony A7 III||Sony RX100 IV|
|Sensor Format||Full Frame Sensor||1" Sensor|
|Sensor Size||35.6 x 23.8 mm||13.2 x 8.8 mm|
|Sensor Area||847.28 mm2||116.16 mm2|
|Sensor Diagonal||42.8 mm||15.9 mm|
|Sensor Resolution||24 Megapixels||20 Megapixels|
|Image Resolution||6000 x 4000 pixels||5472 x 3648 pixels|
|Pixel Pitch||5.94 μm||2.41 μm|
|Pixel Density||2.83 MP/cm2||17.18 MP/cm2|
|Moiré control||no AA filter||Anti-Alias filter|
|Movie Capability||4K/30p Video||4K/30p Video|
|ISO Setting||100-51200 ISO||125-12800 ISO|
|ISO Boost||50-204800 ISO||80-25600 ISO|
|Image Processor||BIONZ X||BIONZ X|
|DXO Sensor Quality (score)||96||70|
|DXO Color Depth (bits)||25.0||22.8|
|DXO Dynamic Range (EV)||14.7||12.6|
|DXO Low Light (ISO)||3730||591|
|Screen Specs||Sony A7 III||Sony RX100 IV|
|Viewfinder Type||Electronic viewfinder||Electronic viewfinder|
|Viewfinder Field of View||100%||100%|
|Viewfinder Resolution||2359k dots||2359k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0 inch||3.0 inch|
|LCD Resolution||922k dots||1228k dots|
|LCD Attachment||Tilting screen||Tilting screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Sony A7 III||Sony RX100 IV|
|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||16 shutter flaps/s|
|Electronic Shutter||YES||up to 1/32000s|
|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||UHS-I|
|Connectivity Specs||Sony A7 III||Sony RX100 IV|
|External Flash||Hotshoe||no Hotshoe|
|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||Wifi built-in|
|Near-Field Communication||NFC built-in||NFC built-in|
|Bluetooth Support||Bluetooth built-in||no Bluetooth|
|Body Specs||Sony A7 III||Sony RX100 IV|
|Environmental Sealing||Weathersealed body||Not weather sealed|
|Battery Type||NP-FZ100 power pack||NP-BX1 power pack|
|Battery Life (CIPA)||610 shots per charge||280 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 41 mm
(4.0 x 2.3 x 1.6 in)
|Camera Weight||650 g (22.9 oz)||298 g (10.5 oz)|
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