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Sony RX10 IV versus Sony RX100 III

The Sony Cyber-shot DSC-RX10 IV and the Sony Cyber-shot DSC-RX100 III are two digital cameras that were revealed to the public, respectively, in September 2017 and May 2014. Both the RX10 IV and the RX100 III are fixed lens compact cameras that are equipped with an one-inch sensor. Both cameras offer a resolution of 20 megapixel. 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 RX10 IV vs Sony RX100 III

The side-by-side display below illustrates the physical size and weight of the Sony RX10 IV and the Sony RX100 III. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All size dimensions are rounded to the nearest millimeter. You can also use the toggle button 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 RX10 IV – represents the basis or 100 percent across all the size and weight measures).

Compare Sony RX10 IV vs Sony RX100 III
Compare RX10 IV versus RX100 III top
Compare RX10 IV and RX100 III rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony RX100 III is considerably smaller (53 percent) than the Sony RX10 IV. Moreover, the RX100 III is substantially lighter (74 percent) than the RX10 IV. It is worth mentioning in this context that the RX10 IV is splash and dust resistant, while the RX100 III does not feature any corresponding weather-sealing.

Concerning battery life, the RX10 IV gets 400 shots out of its NP-FW50 battery, while the RX100 III can take 320 images on a single charge of its NP-BX1 power pack.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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.

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 RX10 IV» 5.2 in 3.7 in 5.7 in 38.6 oz 400 Y Sep 2017 1,699 i i Sony RX10 IV
Sony RX100 III« 4.0 in 2.3 in 1.6 in 10.2 oz 320 n May 2014 799- i Sony RX100 III
Canon G1 X Mark III« » 4.5 in 3.1 in 2.0 in 14.1 oz 200 Y Oct 2017 1,299 i i Canon G1 X Mark III
Canon G5 X« » 4.4 in 3.0 in 1.7 in 12.5 oz 210 n Oct 2015 799 i i Canon G5 X
Canon G7 X« » 4.1 in 2.4 in 1.6 in 10.7 oz 210 n Sep 2014 699- i Canon G7 X
Fujifilm X-Pro2« » 5.6 in 3.3 in 1.8 in 17.5 oz 350 Y Jan 2016 1,699 i i Fujifilm X-Pro2
Panasonic FT7« » 4.6 in 3.0 in 1.5 in 11.3 oz 300 Y May 2018 449 i i Panasonic FT7
Panasonic FZ2000« » 5.4 in 4.0 in 5.3 in 32.3 oz 350 n Sep 2016 1,199 i i Panasonic FZ2000
Panasonic FZ1000« » 5.4 in 3.9 in 5.2 in 29.3 oz 360 n Jun 2014 899- i Panasonic FZ1000
Sony A7 III« » 5.0 in 3.8 in 2.9 in 22.9 oz 610 Y Feb 2018 1,999 i i Sony A7 III
Sony RX100 VI« » 4.0 in 2.3 in 1.7 in 10.6 oz 240 n Jun 2018 1,199 i i Sony RX100 VI
Sony A6300« » 4.7 in 2.6 in 1.9 in 14.3 oz 400 Y Feb 2016 999- i Sony A6300
Sony A6500« » 4.7 in 2.6 in 2.1 in 16.0 oz 350 Y Oct 2016 1,399 i i Sony A6500
Sony RX10 III« » 5.2 in 3.7 in 5.0 in 37.1 oz 420 Y Mar 2016 1,499- i Sony RX10 III
Sony RX100 V« » 4.0 in 2.3 in 1.6 in 10.5 oz 220 n Oct 2016 999 i i Sony RX100 V
Sony RX100 IV« » 4.0 in 2.3 in 1.6 in 10.5 oz 280 n Jun 2015 999- i Sony RX100 IV
Sony RX100 II« » 4.0 in 2.3 in 1.5 in 9.9 oz 350 n Jun 2013 749- i Sony RX100 II

The camera’s price is obviously a critical decision-making factor. 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 III was launched at a markedly lower price (by 53 percent) than the RX10 IV, which puts it into a different market segment. 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 RX10 IV vs Sony RX100 III

The size of the sensor inside a digital camera is one of the key determinants 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. 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 tend to be more expensive and lead to bigger and heavier cameras and lenses.

Both cameras under consideration feature an one-inch sensor and have a format factor (sometimes also referred to as "crop factor") of 2.7. Within the spectrum of camera sensors, this places the review cameras among the medium-sized sensor cameras that aim to strike a balance between image quality and portability. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Sony RX10 IV and Sony RX100 III sensor measures

The two cameras under review do not only share the same sensor size, but also offer an identical resolution of 20 megapixel. This similarity in sensor specs implies that both the RX10 IV and the RX100 III have the same pixel density, as well as the same pixel size. It should, however, be noted that the RX10 IV is much more recent (by 3 years and 3 months) than the RX100 III, and its sensor will have benefitted from technological advances during this time.

RX10 IV versus RX100 III MP

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"). 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 RX10 IV» 1-inch 20.0 5472 36484K/30p----Sony RX10 IV
Sony RX100 III« 1-inch 20.0 5472 36481080/60p22.412.349567Sony RX100 III
Canon G1 X Mark III« » APS-C 24.0 6000 40001080/60p----Canon G1 X Mark III
Canon G5 X« » 1-inch 20.0 5472 36481080/60p----Canon G5 X
Canon G7 X« » 1-inch 20.0 5472 36481080/60p23.012.755671Canon G7 X
Fujifilm X-Pro2« » APS-C 24.0 6000 40001080/60p----Fujifilm X-Pro2
Panasonic FT7« » 1/2.3 20.2 5184 38884K/30p----Panasonic FT7
Panasonic FZ2000« » 1-inch 20.0 5472 36484K/30p----Panasonic FZ2000
Panasonic FZ1000« » 1-inch 20.0 5472 36484K/30p22.111.751764Panasonic FZ1000
Sony A7 III« » Full Frame 24.0 6000 40004K/30p25.014.7373096Sony A7 III
Sony RX100 VI« » 1-inch 20.0 5472 36484K/30p----Sony RX100 VI
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 RX100 V« » 1-inch 20.0 5472 36484K/30p22.812.458670Sony RX100 V
Sony RX100 IV« » 1-inch 20.0 5472 36484K/30p22.812.659170Sony RX100 IV
Sony RX100 II« » 1-inch 20.0 5472 36481080/60p22.512.448367Sony RX100 II

Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the RX10 IV provides a higher video resolution than the RX100 III. It can shoot video footage at 4K/30p, while the RX100 III is limited to 1080/60p.

 

Feature comparison: Sony RX10 IV vs Sony RX100 III

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 RX10 IV offers a substantially higher resolution than the one in the RX100 III (2359k vs 1440k dots). The table below summarizes some of the other core capabilities of the Sony RX10 IV and Sony RX100 III in connection with corresponding information for a sample of similar cameras. If needed, the dpreview camera hub, for example, contains further detail on the cameras' specs.

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 RX10 IV»2359 Y 3.0 1440 tilting Y 2000 24.0 Y Y Sony RX10 IV
Sony RX100 III«1440 n 3.0 1229 tilting n 2000 10.0 Y Y Sony RX100 III
Canon G1 X Mark III« »2360 n 3.0 1040 swivel Y 2000 9.0 Y Y Canon G1 X Mark III
Canon G5 X« »2360 n 3.0 1040 swivel Y 2000 5.9 Y Y Canon G5 X
Canon G7 X« »- n 3.0 1040 tilting Y 2000 6.5 Y Y Canon G7 X
Fujifilm X-Pro2« »2360 n 3.0 1620 fixed n 8000 8.0 n n Fujifilm X-Pro2
Panasonic FT7« »1170 n 3.0 1040 fixed n 1300 10.0 Y Y Panasonic FT7
Panasonic FZ2000« »2360 n 3.0 1040 swivel Y 4000 12.0 Y Y Panasonic FZ2000
Panasonic FZ1000« »2359 n 3.0 921 swivel n 4000 12.0 Y Y Panasonic FZ1000
Sony A7 III« »2359 n 3.0 922 tilting Y 8000 10.0 n Y Sony A7 III
Sony RX100 VI« »2359 n 3.0 1229 tilting Y 2000 24.0 Y Y Sony RX100 VI
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 RX100 V« »2359 n 3.0 1229 tilting n 2000 24.0 Y Y Sony RX100 V
Sony RX100 IV« »2359 n 3.0 1228 tilting n 2000 16.0 Y Y Sony RX100 IV
Sony RX100 II« »- n 3.0 1229 tilting n 2000 10.0 Y Y Sony RX100 II

One feature that is present on the RX10 IV, but is missing on the RX100 III is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.

Both the RX10 IV and the RX100 III have zoom lenses build in. The RX10 IV has a 24-600mm f/2.4-4.0 optic and the RX100 III offers a 24-70mm f/1.8-2.8 (focal lengths in full frame equivalent terms). Hence, the RX10 IV and RX100 III provide the same view at the wide-angle end, but the RX100 III has less tele-photo reach at the long end. The RX100 III offers the faster maximum aperture.

Both the RX10 IV and the RX100 III 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 RX10 IV»YstereomonoYYmicro2.0YY-Sony RX10 IV
Sony RX100 III«-stereomono--micro2.0YY-Sony RX100 III
Canon G1 X Mark III« »Ystereomono--micro2.0YYYCanon G1 X Mark III
Canon G5 X« »YstereomonoYYmini2.0YY-Canon G5 X
Canon G7 X« »-stereomono--micro2.0YY-Canon G7 X
Fujifilm X-Pro2« »YstereomonoY-micro2.0Y--Fujifilm X-Pro2
Panasonic FT7« »-stereomono--micro2.0Y--Panasonic FT7
Panasonic FZ2000« »YstereomonoYYmicro2.0Y--Panasonic FZ2000
Panasonic FZ1000« »YstereomonoY-micro2.0YY-Panasonic FZ1000
Sony A7 III« »YstereomonoYYmicro3.1YYYSony A7 III
Sony RX100 VI« »-stereomono--micro2.0YYYSony RX100 VI
Sony A6300« »YstereomonoY-micro2.0YY-Sony A6300
Sony A6500« »YstereomonoY-micro2.0YY-Sony A6500
Sony RX10 III« »YstereomonoYYmicro2.0YY-Sony RX10 III
Sony RX100 V« »-stereomono--micro2.0YY-Sony RX100 V
Sony RX100 IV« »-stereomono--micro2.0YY-Sony RX100 IV
Sony RX100 II« »Ystereomono--micro2.0YY-Sony RX100 II

The RX10 IV is a current model that online retailers, such as amazon, will have in stock. In contrast, the RX100 III has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the RX100 III was succeeded by the Sony RX100 IV.

Review summary: Sony RX10 IV vs Sony RX100 III

So what conclusions can be drawn? Which of the two cameras – the Sony RX10 IV or the Sony RX100 III – has the upper hand? Below is a summary of the relative strengths of each of the two contestants.


Advantages of the Sony Cyber-shot DSC-RX10 IV:

  • Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
  • 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.
  • More detailed viewfinder: Has higher resolution electronic viewfinder (2359k vs 1440k dots).
  • Easier setting verification: Features an LCD display on top to control shooting parameters.
  • More detailed LCD: Has a higher resolution rear screen (1440k vs 1229k dots).
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • Faster burst: Shoots at higher frequency (24 vs 10 flaps/sec) to capture the decisive moment.
  • More tele-reach: Has a longer tele-lens for perspective compression and subject magnification.
  • Longer lasting: Can take more shots (400 versus 320) 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.
  • More modern: Reflects 3 years and 3 months of technical progress since the RX100 III launch.


Reasons to prefer the Sony Cyber-shot DSC-RX100 III:

  • Better light gathering: Has a lens with a wider maximum aperture (f/1.8 vs f/2.4).
  • More compact: Is smaller (102x58mm vs 133x94mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 805g or 74 percent) and is thus easier to take along.
  • More affordable: Was introduced into a lower priced category (53 percent cheaper at launch).
  • More heavily discounted: Has been around for much longer (launched in May 2014).

If the count of relative strengths (bullet points above) is taken as a measure, the RX10 IV is the clear winner of the match-up (13 : 5 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.

RX10 IV 13:05 RX100 III

In any case, while the specs-based evaluation of cameras is instructive in revealing their potential as photographic tools, it remains incomplete and does no justice, for example, to the way the RX10 IV or the RX100 III handle or perform in practice. 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 where reviews by experts come in. The table below summarizes the assessments of some of the best known camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). You can find the full text of the reviews by clicking on the site logo in the table header.

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 RX10 IV»Rec84/1004.5/5-5/5 Sep 2017 1,699 i i Sony RX10 IV
Sony RX100 III«HiRec82/1004.5/54.5/55/5 May 2014 799- i Sony RX100 III
Canon G1 X Mark III« »Rec79/1004.5/5-4.5/5 Oct 2017 1,299 i i Canon G1 X Mark III
Canon G5 X« »HiRec78/1004.5/54/54.5/5 Oct 2015 799 i i Canon G5 X
Canon G7 X« »HiRec77/1004.5/53.5/54.5/5 Sep 2014 699- i Canon G7 X
Fujifilm X-Pro2« »Rec83/1004.5/54.5/54.5/5 Jan 2016 1,699 i i Fujifilm X-Pro2
Panasonic FT7« »Rec-3.5/5-3.5/5 May 2018 449 i i Panasonic FT7
Panasonic FZ2000« »Rec82/1004.5/54.5/55/5 Sep 2016 1,199 i i Panasonic FZ2000
Panasonic FZ1000« »HiRec82/1004.5/54.5/54.5/5 Jun 2014 899- i Panasonic FZ1000
Sony A7 III« »HiRec89/1005/55/55/5 Feb 2018 1,999 i i Sony A7 III
Sony RX100 VI« »HiRec83/1004/5-4.5/5 Jun 2018 1,199 i i Sony RX100 VI
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 Sony RX10 III
Sony RX100 V« »HiRec83/1004/55/54.5/5 Oct 2016 999 i i Sony RX100 V
Sony RX100 IV« »HiRec85/1004/54.5/54.5/5 Jun 2015 999- i Sony RX100 IV
Sony RX100 II« »HiRec79/1004.5/55/54.5/5 Jun 2013 749- i Sony RX100 II

The review scores listed above should be treated with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparisons of ratings among very different cameras or across long time periods have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

 

Other camera comparisons

Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just use the search menu below. An an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool. If you do not see the camera that you are looking for, please contact me, and I will try to update the database with the necessary infos.

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