Sony A6100 vs RX100 IV
The Sony Alpha A6100 and the Sony Cyber-shot DSC-RX100 IV are two digital cameras that were revealed to the public, respectively, in August 2019 and June 2015. The A6100 is a mirrorless interchangeable lens camera, while the RX100 IV is a fixed lens compact. The cameras are based on an APS-C (A6100) and an one-inch (RX100 IV) sensor. The A6100 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.
Going beyond this snapshot of core features and characteristics, what are the differences between the Sony Alpha A6100 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.
The physical size and weight of the Sony A6100 and the Sony RX100 IV are illustrated in the side-by-side display below. 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.
The A6100 can be obtained in three different colors (black, silver, white), while the RX100 IV is only available in black.
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 notably smaller (26 percent) than the Sony A6100. In this context, it is worth noting that neither the A6100 nor the RX100 IV are weather-sealed.
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 A6100 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 A6100 and their specifications in the Sony E-Mount Lens Catalog.
Concerning battery life, the A6100 gets 420 shots out of its NP-FW50 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. 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 A6100||4.7 in||2.6 in||2.3 in||14.0 oz||420||n||Aug 2019||749|
|Sony RX100 IV||4.0 in||2.3 in||1.6 in||10.5 oz||280||n||Jun 2015||999|
|Canon G7 X||4.1 in||2.4 in||1.6 in||10.7 oz||210||n||Sep 2014||699|
|Fujifilm X-T200||4.8 in||3.3 in||2.2 in||13.1 oz||270||n||Jan 2020||699|
|Fujifilm X-T30||4.6 in||3.3 in||1.9 in||13.5 oz||380||n||Feb 2019||899|
|Fujifilm X-A5||4.6 in||2.7 in||1.6 in||12.7 oz||450||n||Jan 2018||399|
|Fujifilm X-E3||4.8 in||2.9 in||1.7 in||11.9 oz||350||n||Sep 2017||899|
|Fujifilm X-T20||4.6 in||3.3 in||1.6 in||13.5 oz||350||n||Jan 2017||899|
|Nikon D5600||4.9 in||3.8 in||2.8 in||16.4 oz||970||n||Nov 2016||699|
|Panasonic FZ1000||5.4 in||3.9 in||5.2 in||29.3 oz||360||n||Jun 2014||899|
|Sony A6400||4.7 in||2.6 in||2.0 in||14.2 oz||410||n||Jan 2019||899|
|Sony RX100 VII||4.0 in||2.3 in||1.7 in||10.7 oz||260||n||Jul 2019||1,199|
|Sony RX100 V||4.0 in||2.3 in||1.6 in||10.5 oz||220||n||Oct 2016||999|
|Sony A6000||4.7 in||2.6 in||1.8 in||12.1 oz||360||n||Feb 2014||599|
|Sony RX100 III||4.0 in||2.3 in||1.6 in||10.2 oz||320||n||May 2014||799|
|Sony A3000||5.0 in||3.6 in||3.3 in||14.5 oz||470||n||Aug 2013||329|
|Sony NEX-7||4.7 in||2.6 in||1.7 in||14.1 oz||430||n||Aug 2011||1,349|
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
(1) Number of images that can be taken on a full battery charge according to the CIPA-standard; (2) Official announcement.
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.
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 A6100 features an APS-C sensor and the Sony RX100 IV an one-inch sensor. The sensor area in the RX100 IV is 68 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.
With 24MP, the A6100 offers a higher resolution than the RX100 IV (20MP), but the A6100 nevertheless has larger individual pixels (pixel pitch of 3.91μm versus 2.41μm for the RX100 IV) due to its larger sensor. Moreover, the A6100 is a much more recent model (by 4 years and 2 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.
The resolution advantage of the Sony A6100 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A6100 for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 cm. The corresponding values for the Sony RX100 IV are 27.4 x 18.2 inches or 69.5 x 46.3 cm for good quality, 21.9 x 14.6 inches or 55.6 x 37.1 cm for very good quality, and 18.2 x 12.2 inches or 46.3 x 30.9 cm for excellent quality prints.
The A6100 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Sony Alpha A6100 has a native sensitivity range from ISO 100 to ISO 32000, which can be extended to ISO 100-51200. 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.
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.
|Sony RX100 IV||1-inch||20.0||5472||3648||4K/30p||22.8||12.6||591||70|
|Canon G7 X||1-inch||20.0||5472||3648||1080/60p||23.0||12.7||556||71|
|Sony RX100 VII||1-inch||20.0||5472||3648||4K/30p||21.8||12.4||418||63|
|Sony RX100 V||1-inch||20.0||5472||3648||4K/30p||22.8||12.4||586||70|
|Sony RX100 III||1-inch||20.0||5472||3648||1080/60p||22.4||12.3||495||67|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, and both provide the same movie specifications (4K/30p).
Apart from body and sensor, cameras can and do differ across a variety of features. The two cameras under review are similar with respect to both having an electronic viewfinder. However, the one in the RX100 IV offers a substantially higher resolution than the one in the A6100 (2359k vs 1440k dots). The adjacent table lists some of the other core features of the Sony A6100 and Sony RX100 IV along with similar information for a selection of comparators.
|Sony RX100 IV||2359||n||3.0||1228||tilting||n||1/2000s||16.0||Y||Y|
|Canon G7 X||none||n||3.0||1040||tilting||Y||1/2000s||6.5||Y||Y|
|Sony RX100 VII||2359||n||3.0||921||tilting||Y||1/2000s||90.0||Y||Y|
|Sony RX100 V||2359||n||3.0||1229||tilting||n||1/2000s||24.0||Y||Y|
|Sony RX100 III||1440||n||3.0||1229||tilting||n||1/2000s||10.0||Y||Y|
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The A6100 has a touchscreen, while the RX100 IV has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.Both cameras have an articulated rear screen that can be turned to be front-facing. This feature will be particularly appreciated by vloggers and photographers who are interested in taking selfies.
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 A6100 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 A6100 and the RX100 IV write their files to SDXC or Memory Stick PRO Duo cards. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.
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 A6100 and Sony Cyber-shot DSC-RX100 IV and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
|Sony RX100 IV||-||stereo||mono||-||-||micro||2.0||Y||Y||-|
|Canon G7 X||-||stereo||mono||-||-||micro||2.0||Y||Y||-|
|Sony RX100 VII||-||stereo||mono||Y||-||micro||2.0||Y||Y||Y|
|Sony RX100 V||-||stereo||mono||-||-||micro||2.0||Y||Y||-|
|Sony RX100 III||-||stereo||mono||-||-||micro||2.0||Y||Y||-|
It is notable that the A6100 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 A6100 is a recent model that features in the current product line-up of Sony. In contrast, the RX100 IV has been discontinued (but 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.
So what conclusions can be drawn? Is the Sony A6100 better than the Sony RX100 IV or vice versa? The listing below highlights the relative strengths of the two models.
Advantages of the Sony Alpha A6100:
- 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.
- Richer colors: The sensor size advantage translates into images with better, more accurate colors.
- More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
- Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
- 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.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.70x 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 (1/4000s 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 (420 versus 280) on a single battery charge.
- Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- More modern: Reflects 4 years and 2 months of technical progress since the RX100 IV launch.
Arguments in favor of the Sony Cyber-shot DSC-RX100 IV:
- More detailed viewfinder: Has higher resolution electronic viewfinder (2359k vs 1440k dots).
- More detailed LCD: Has a higher resolution rear screen (1228k vs 922k dots).
- Faster burst: Shoots at higher frequency (16 vs 11 flaps/sec) to capture the decisive moment.
- Ready to shoot: Has an integrated lens, whereas the A6100 necessitates an extra lens.
- More compact: Is smaller (102x58mm vs 120x67mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight even though it has a lens built in (unlike the A6100).
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- More heavily discounted: Has been around for much longer (launched in June 2015).
If the number of relative strengths (bullet points above) is taken as a guide, the A6100 is the clear winner of the match-up (16 : 8 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. 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 A6100 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 the spec-sheets of cameras can offer a general idea of their imaging potential, it says little about, for example, the shooting experience and imaging performance of the A6100 and the RX100 IV in practical situations. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.
This is why expert reviews are important. The table below provides a synthesis of the camera assessments of some of the best known photo-gear 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 A6100||..||82/100||4/5||..||5/5||Aug 2019||749|
|Sony RX100 IV||+ +||85/100||4/5||4.5/5||4.5/5||Jun 2015||999|
|Canon G7 X||+ +||77/100||4.5/5||3.5/5||4.5/5||Sep 2014||699|
|Fujifilm X-T200||..||82/100||4/5||..||4.5/5||Jan 2020||699|
|Fujifilm X-T30||+ +||84/100||4.5/5||5/5||4.5/5||Feb 2019||899|
|Fujifilm X-A5||+||..||4/5||4/5||3.5/5||Jan 2018||399|
|Fujifilm X-E3||+||84/100||4.5/5||4.5/5||4.5/5||Sep 2017||899|
|Fujifilm X-T20||+ +||82/100||5/5||..||4.5/5||Jan 2017||899|
|Nikon D5600||..||79/100||4.5/5||4.5/5||4/5||Nov 2016||699|
|Panasonic FZ1000||+ +||82/100||4.5/5||4.5/5||4.5/5||Jun 2014||899|
|Sony A6400||+||85/100||4.5/5||..||4/5||Jan 2019||899|
|Sony RX100 VII||..||..||4/5||..||5/5||Jul 2019||1,199|
|Sony RX100 V||+ +||83/100||4/5||5/5||4.5/5||Oct 2016||999|
|Sony A6000||+||80/100||4.5/5||5/5||5/5||Feb 2014||599|
|Sony RX100 III||+ +||82/100||4.5/5||4.5/5||5/5||May 2014||799|
|Sony A3000||+||..||4/5||4.5/5||4/5||Aug 2013||329|
|Sony NEX-7||+ +||81/100||4.5/5||5/5||5/5||Aug 2011||1,349|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
Care should be taken when interpreting the review scores above, 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. 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? 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.
- Canon 1D Mark II N vs Sony A6100
- Canon SX530 vs Sony RX100 IV
- Canon XC10 vs Sony RX100 IV
- Fujifilm X-Pro2 vs Sony RX100 IV
- Nikon D5200 vs Sony RX100 IV
- Nikon D60 vs Sony A6100
- Olympus E-P5 vs Sony A6100
- Panasonic GF3 vs Sony A6100
- Panasonic GF5 vs Sony RX100 IV
- Panasonic L1 vs Sony A6100
- Pentax K-3 vs Sony RX100 IV
- Sony A6100 vs Sony RX10 II
Specifications: Sony A6100 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 A6100||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||August 2019||June 2015|
|Launch Price||USD 749||USD 999|
|Sensor Specs||Sony A6100||Sony RX100 IV|
|Sensor Format||APS-C Sensor||1" Sensor|
|Sensor Size||23.5 x 15.6 mm||13.2 x 8.8 mm|
|Sensor Area||366.6 mm2||116.16 mm2|
|Sensor Diagonal||28.2 mm||15.9 mm|
|Sensor Resolution||24 Megapixels||20 Megapixels|
|Image Resolution||6000 x 4000 pixels||5472 x 3648 pixels|
|Pixel Pitch||3.91 μm||2.41 μm|
|Pixel Density||6.55 MP/cm2||17.18 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||4K/30p Video||4K/30p Video|
|ISO Setting||100 - 32,000 ISO||125 - 12,800 ISO|
|ISO Boost||100 - 51,200 ISO||80 - 25,600 ISO|
|Image Processor||BIONZ X||BIONZ X|
|DXO Sensor Quality (score)||..||70|
|DXO Color Depth (bits)||..||22.8|
|DXO Dynamic Range (EV)||..||12.6|
|DXO Low Light (ISO)||..||591|
|Screen Specs||Sony A6100||Sony RX100 IV|
|Viewfinder Type||Electronic viewfinder||Electronic viewfinder|
|Viewfinder Field of View||100%||100%|
|Viewfinder Resolution||1440k dots||2359k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||922k dots||1228k dots|
|LCD Attachment||Tilting screen||Tilting screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Sony A6100||Sony RX100 IV|
|Focus System||On-Sensor Phase-detect||Contrast-detect AF|
|Manual Focusing Aid||Focus Peaking||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/2000s|
|Continuous Shooting||11 shutter flaps/s||16 shutter flaps/s|
|Electronic Shutter||YES||up to 1/32000s|
|Time-Lapse Photography||Intervalometer built-in||no Intervalometer|
|Fill Flash||Build-in Flash||Build-in Flash|
|Storage Medium||MS or SDXC cards||MS or SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||UHS-I||UHS-I|
|Connectivity Specs||Sony A6100||Sony RX100 IV|
|External Flash||Hotshoe||no Hotshoe|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||micro HDMI||micro HDMI|
|Microphone Port||External MIC port||no MIC socket|
|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 A6100||Sony RX100 IV|
|Battery Life (CIPA)||420 shots per charge||280 shots per charge|
|In-Camera Charging||USB charging||USB charging|
120 x 67 x 59 mm
(4.7 x 2.6 x 2.3 in)
102 x 58 x 41 mm
(4.0 x 2.3 x 1.6 in)
|Camera Weight||396 g (14.0 oz)||298 g (10.5 oz)|
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