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Sony A7 II versus Sony RX10 IV

The Sony Alpha A7 II and the Sony Cyber-shot DSC-RX10 IV are two enthusiast cameras that were officially introduced, respectively, in November 2014 and September 2017. The A7 II is a mirrorless interchangeable lens camera, while the RX10 IV is a fixed lens compact. The cameras are based on a full frame (A7 II) and an one-inch (RX10 IV) sensor. The A7 II has a resolution of 24 megapixel, whereas the RX10 IV provides 20 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 A7 II vs Sony RX10 IV

The physical size and weight of the Sony A7 II and the Sony RX10 IV are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All size 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 A7 II – represents 100 percent across all the size and weight measures).

Compare Sony A7 II vs Sony RX10 IV
Compare A7 II versus RX10 IV top
Compare A7 II and RX10 IV rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony RX10 IV is somewhat larger (3 percent) than the Sony A7 II. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the RX10 IV has a lens build in, whereas the A7 II 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 A7 II and their specifications in the Sony FE Lens Catalog.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
Sony A7 II» 127 mm 96 mm 60 mm 599 g 350 Y Nov 2014 1,999- i Sony A7 II
Sony RX10 IV« 133 mm 94 mm 145 mm 1095 g 400 Y Sep 2017 1,699 i i Sony RX10 IV
Canon G1 X Mark III« » 115 mm 78 mm 51 mm 399 g 200 Y Oct 2017 1,299 i i Canon G1 X Mark III
Fujifilm X-Pro2« » 141 mm 83 mm 46 mm 495 g 350 Y Jan 2016 1,699 i i Fujifilm X-Pro2
Olympus E-M1 II« » 134 mm 91 mm 67 mm 574 g 440 Y Sep 2016 1,999 i i Olympus E-M1 II
Panasonic GH5« » 139 mm 98 mm 87 mm 725 g 410 Y Jan 2017 1,999 i i Panasonic GH5
Sony A7 III« » 127 mm 96 mm 74 mm 650 g 610 Y Feb 2018 1,999 i i Sony A7 III
Sony A9« » 127 mm 96 mm 63 mm 673 g 650 Y Apr 2017 4,499 i i Sony A9
Sony A6300« » 120 mm 67 mm 49 mm 404 g 400 Y Feb 2016 999- i Sony A6300
Sony A6500« » 120 mm 67 mm 53 mm 453 g 350 Y Oct 2016 1,399 i i Sony A6500
Sony RX10 III« » 133 mm 94 mm 127 mm 1051 g 420 Y Mar 2016 1,499 i i Sony RX10 III
Sony A7R II« » 127 mm 96 mm 60 mm 625 g 290 Y Jun 2015 3,199- i Sony A7R II
Sony A7S II« » 127 mm 96 mm 60 mm 627 g 370 Y Sep 2015 2,999 i i Sony A7S II
Sony A77 II« » 143 mm 104 mm 81 mm 647 g 480 Y May 2014 1,199 i i Sony A77 II
Sony A7« » 127 mm 94 mm 48 mm 474 g 340 Y Oct 2013 1,699- i Sony A7
Sony A7R« » 127 mm 94 mm 48 mm 465 g 340 Y Oct 2013 2,299- i Sony A7R
Sony A77« » 143 mm 104 mm 81 mm 732 g 470 Y Aug 2011 1,999- i Sony A77

The camera’s price is obviously a critical decision-making factor. 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 RX10 IV was launched at a lower price than the A7 II, despite having a lens build in. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. 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 II vs Sony RX10 IV

The size of the imaging sensor is a crucial determinant 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 A7 II features a full frame sensor and the Sony RX10 IV an one-inch sensor. The sensor area in the RX10 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.

Sony A7 II and Sony RX10 IV sensor measures

With 24MP, the A7 II offers a higher resolution than the RX10 IV (20MP), but the A7 II nevertheless has larger individual pixels (pixel pitch of 5.97μm versus 2.41μm for the RX10 IV) due to its larger sensor. However, the RX10 IV is a somewhat more recent model (by 2 years and 9 months) than the A7 II, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels.

A7 II versus RX10 IV MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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"). The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
Sony A7 II» Full Frame 24.0 6000 40001080/60p24.913.6244990Sony A7 II
Sony RX10 IV« 1-inch 20.0 5472 36484K/30p----Sony RX10 IV
Canon G1 X Mark III« » APS-C 24.0 6000 40001080/60p----Canon G1 X Mark III
Fujifilm X-Pro2« » APS-C 24.0 6000 40001080/60p----Fujifilm X-Pro2
Olympus E-M1 II« » Four Thirds 20.2 5184 38884K/30p23.712.8131280Olympus E-M1 II
Panasonic GH5« » Four Thirds 20.2 5184 38884K/60p23.913.080777Panasonic GH5
Sony A7 III« » Full Frame 24.0 6000 40004K/30p25.014.7373096Sony A7 III
Sony A9« » Full Frame 24.0 6000 40004K/30p24.913.3351792Sony A9
Sony A6300« » APS-C 24.0 6000 40004K/30p24.413.7143785Sony A6300
Sony A6500« » APS-C 24.0 6000 40004K/30p24.513.7140585Sony A6500
Sony RX10 III« » 1-inch 20.0 5472 36484K/30p23.112.647270Sony RX10 III
Sony A7R II« » Full Frame 42.2 7952 53044K/30p26.013.9343498Sony A7R II
Sony A7S II« » Full Frame 12.0 4240 28324K/30p23.613.3299385Sony A7S II
Sony A77 II« » APS-C 24.0 6000 40001080/60p----Sony A77 II
Sony A7« » Full Frame 24.0 6000 40001080/60p24.814.2224890Sony A7
Sony A7R« » Full Frame 36.2 7360 49121080/60p25.614.1274695Sony A7R
Sony A77« » APS-C 24.0 6000 40001080/60p24.013.280178Sony A77

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 RX10 IV provides a better video resolution than the A7 II. It can shoot movie footage at 4K/30p, while the A7 II is limited to 1080/60p.

 

Feature comparison: Sony A7 II vs Sony RX10 IV

Apart from body and sensor, cameras can and do differ across a variety of features. The two cameras under consideration are similar with respect to both having an electronic viewfinder. However, the one in the A7 II offers a slightly higher resolution than the one in the RX10 IV (2400k vs 2359k dots). The adjacent table lists some of the other core features of the Sony A7 II and Sony RX10 IV along with similar information for a selection of comparators. The full specs-sheets can be found in the camera manual or in the dpreview camera hub.

Core Features
  Camera
Model
Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec)
Build-in
Flash
(yes/no)
Build-in
Image
Stab
Camera
Model
Sony A7 II»2400 n 3.0 1230 tilting n 8000 5.0 n Y Sony A7 II
Sony RX10 IV«2359 Y 3.0 1440 tilting Y 2000 24.0 Y Y Sony RX10 IV
Canon G1 X Mark III« »2360 n 3.0 1040 swivel Y 2000 9.0 Y Y Canon G1 X Mark III
Fujifilm X-Pro2« »2360 n 3.0 1620 fixed n 8000 8.0 n n Fujifilm X-Pro2
Olympus E-M1 II« »2360 n 3.0 1037 swivel Y 8000 18.0 n Y Olympus E-M1 II
Panasonic GH5« »3680 n 3.2 1620 swivel Y 8000 12.0 n Y Panasonic GH5
Sony A7 III« »2359 n 3.0 922 tilting Y 8000 10.0 n Y Sony A7 III
Sony A9« »3686 n 3.0 1440 tilting Y 8000 20.0 n Y Sony A9
Sony A6300« »2300 n 3.0 922 tilting n 4000 11.0 Y n Sony A6300
Sony A6500« »2300 n 3.0 922 tilting Y 4000 11.0 Y Y Sony A6500
Sony RX10 III« »2359 Y 3.0 1229 tilting n 2000 14.0 Y Y Sony RX10 III
Sony A7R II« »2400 n 3.0 1229 tilting n 8000 5.0 n Y Sony A7R II
Sony A7S II« »2400 n 3.0 1229 tilting n 8000 5.0 n Y Sony A7S II
Sony A77 II« »2359 Y 3.0 1229 full-flex n 8000 12.0 Y Y Sony A77 II
Sony A7« »2400 n 3.0 1230 tilting n 8000 5.0 n n Sony A7
Sony A7R« »2400 n 3.0 1230 tilting n 8000 4.0 n n Sony A7R
Sony A77« »2359 Y 3.0 921 full-flex n 8000 12.0 Y Y Sony A77

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The RX10 IV has a touchscreen, while the A7 II has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

The reported shutter speed and shutter burst refer to the use of the mechanical shutter. In addition, the RX10 IV features an electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (rolling shutter) or shooting under artificial light sources (flickering).

Both the A7 II and the RX10 IV write their imaging data to SDXC or Memory Stick PRO Duo cards.

Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Type
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
Sony A7 II»YstereomonoYYmicro2.0YY-Sony A7 II
Sony RX10 IV«YstereomonoYYmicro2.0YY-Sony RX10 IV
Canon G1 X Mark III« »Ystereomono--micro2.0YYYCanon G1 X Mark III
Fujifilm X-Pro2« »YstereomonoY-micro2.0Y--Fujifilm X-Pro2
Olympus E-M1 II« »YstereomonoYYmicro3.0Y--Olympus E-M1 II
Panasonic GH5« »YstereomonoYYfull3.1Y-YPanasonic GH5
Sony A7 III« »YstereomonoYYmicro3.1YYYSony A7 III
Sony A9« »YstereomonoYYmicro2.0YYYSony A9
Sony A6300« »YstereomonoY-micro2.0YY-Sony A6300
Sony A6500« »YstereomonoY-micro2.0YY-Sony A6500
Sony RX10 III« »YstereomonoYYmicro2.0YY-Sony RX10 III
Sony A7R II« »YstereomonoYYmicro2.0YY-Sony A7R II
Sony A7S II« »YstereomonoYYmicro2.0YY-Sony A7S II
Sony A77 II« »YstereomonoY-mini2.0YY-Sony A77 II
Sony A7« »YstereomonoYYmicro2.0YY-Sony A7
Sony A7R« »YstereomonoYYmicro2.0YY-Sony A7R
Sony A77« »YstereomonoY-mini2.0---Sony A77

The RX10 IV is a recent model that features in the current product line-up of Sony. In contrast, the A7 II has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the A7 II was succeeded by the Sony A7 III.

Review summary: Sony A7 II vs Sony RX10 IV

So what is the bottom line? Which of the two cameras – the Sony A7 II or the Sony RX10 IV – has the upper hand? The listing below highlights the relative strengths of the two models.


Advantages of the Sony Alpha A7 II:

  • More detail: Offers more megapixels (24 vs 20MP) with a 10% higher linear resolution.
  • Better image quality: Features bigger pixels on a larger sensor for higher quality imaging.
  • Richer colors: Larger pixels generate images with better, more accurate colors.
  • More dynamic range: Capable of capturing a wider spectrum of light and dark details.
  • Better low-light sensitivity: Can be used in poorly lit environments and still produce good images.
  • Faster shutter: Has higher mechanical shutter speed (8000/sec vs 2000/sec) to freeze action.
  • More flexible: Accepts interchangeable lenses, so that lens characteristics can be altered.
  • More heavily discounted: Has been available for much longer (launched in November 2014).


Arguments in favor of the Sony Cyber-shot DSC-RX10 IV:

  • Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • More detailed LCD: Has a higher resolution rear screen (1440k vs 1230k dots).
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • Faster burst: Shoots at higher frequency (24 vs 5 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Ready to shoot: Has an integrated lens, whereas the A7 II necessitates an extra lens.
  • Longer lasting: Gets more shots (400 versus 350) out of a single battery charge.
  • 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 modern: Reflects 2 years and 9 months of technical progress since the A7 II launch.

If the count of relative strengths (bullet points above) is taken as a measure, the RX10 IV emerges as the winner of the match-up (11 : 8 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.

A7 II 08:11 RX10 IV

In any case, while the specs-based evaluation of cameras is instructive in revealing their potential as photographic tools, it remains partial and cannot reveal, for example, the handling experience and imaging performance when actually working with the A7 II or the RX10 IV. 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 where reviews by experts come in. The following table reports the overall rankings of the cameras as published by some of the major camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). The full reviews are available by clicking on the site logo in the table header.

Review Scores
  Camera
Model
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
Sony A7 II»Rec82/1004.5/55/55/5 Nov 2014 1,999- i Sony A7 II
Sony RX10 IV«Rec84/1004.5/5-5/5 Sep 2017 1,699 i i Sony RX10 IV
Canon G1 X Mark III« »Rec79/1004.5/5-4.5/5 Oct 2017 1,299 i i Canon G1 X Mark III
Fujifilm X-Pro2« »Rec83/1004.5/54.5/54.5/5 Jan 2016 1,699 i i Fujifilm X-Pro2
Olympus E-M1 II« »HiRec85/1004.5/55/54.5/5 Sep 2016 1,999 i i Olympus E-M1 II
Panasonic GH5« »HiRec85/1004.5/55/55/5 Jan 2017 1,999 i i Panasonic GH5
Sony A7 III« »HiRec89/1005/55/55/5 Feb 2018 1,999 i i Sony A7 III
Sony A9« »HiRec89/1005/55/55/5 Apr 2017 4,499 i i Sony A9
Sony A6300« »Rec85/1005/55/55/5 Feb 2016 999- i Sony A6300
Sony A6500« »HiRec85/1004.5/55/54.5/5 Oct 2016 1,399 i i Sony A6500
Sony RX10 III« »Rec84/1004.5/54.5/54.5/5 Mar 2016 1,499 i i Sony RX10 III
Sony A7R II« »HiRec90/1005/54.5/55/5 Jun 2015 3,199- i Sony A7R II
Sony A7S II« »Rec-4.5/55/55/5 Sep 2015 2,999 i i Sony A7S II
Sony A77 II« »-80/1004.5/54/55/5 May 2014 1,199 i i Sony A77 II
Sony A7« »HiRec80/1005/54.5/55/5 Oct 2013 1,699- i Sony A7
Sony A7R« »HiRec82/1004.5/55/55/5 Oct 2013 2,299- i Sony A7R
Sony A77« »91/10081/100-4.5/55/5 Aug 2011 1,999- i Sony A77

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.

 

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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting. If the camera you are interested in is not available, please contact me, and I will try to locate and add the respective data to the application.

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