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Panasonic LX100 versus Sony RX10 III

The Panasonic Lumix DMC-LX100 and the Sony Cyber-shot DSC-RX10 III are two enthusiast cameras that were announced, respectively, in September 2014 and March 2016. Both the LX100 and the RX10 III are fixed lens compact cameras that are based on a Four Thirds (LX100) and an one-inch (RX10 III) sensor. The Panasonic has a resolution of 12.7 megapixel, whereas the Sony 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: Panasonic LX100 vs Sony RX10 III

The side-by-side display below illustrates the physical size and weight of the Panasonic LX100 and the Sony RX10 III. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth dimensions are rounded to the nearest millimeter. If you prefer, you can also use the toggle button to switch to a comparison in percentage terms (in this case, the camera on the left – the LX100 – represents 100 percent across all the size and weight measures).

Compare Panasonic LX100 vs Sony RX10 III
Compare LX100 versus RX10 III top
Compare LX100 and RX10 III rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony RX10 III is considerably larger (65 percent) than the Panasonic LX100. Moreover, the RX10 III is substantially heavier (167 percent) than the LX100. It is noteworthy in this context that the RX10 III is splash and dust-proof, while the LX100 does not feature any corresponding weather-sealing.

Concerning battery life, the LX100 gets 300 shots out of its DMW-BLG10 battery, while the RX10 III can take 420 images on a single charge of its NP-FW50 power pack.

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

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
Panasonic LX100» 4.5 in 2.6 in 2.2 in 13.9 oz 300 n Sep 2014 899 i i Panasonic LX100
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
Canon G3 X« » 4.8 in 3.0 in 4.1 in 25.9 oz 300 Y Jun 2015 999 i i Canon G3 X
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 G1 X Mark II« » 4.6 in 2.9 in 2.6 in 19.5 oz 240 n Feb 2014 799 i i Canon G1 X Mark II
Canon G1 X« » 4.6 in 3.2 in 2.6 in 18.8 oz 250 n Jan 2012 799- i Canon G1 X
Fujifilm X30« » 4.7 in 2.8 in 2.4 in 14.9 oz 470 n Aug 2014 599 i i Fujifilm X30
Panasonic FZ1000« » 5.4 in 3.9 in 5.2 in 29.3 oz 360 n Jun 2014 899- i Panasonic FZ1000
Panasonic GM5« » 3.9 in 2.4 in 1.4 in 7.4 oz 220 n Sep 2014 749- i Panasonic GM5
Panasonic GM1« » 3.9 in 2.2 in 1.2 in 7.2 oz 230 n Oct 2013 749- i Panasonic GM1
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 RX10 II« » 5.1 in 3.5 in 4.0 in 28.7 oz 400 Y Jun 2015 1,299- i Sony RX10 II
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 III« » 4.0 in 2.3 in 1.6 in 10.2 oz 320 n May 2014 799- i Sony RX100 III
Sony RX10« » 5.1 in 3.5 in 4.0 in 28.7 oz 420 Y Oct 2013 1,299- i Sony RX10
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 price is, of course, an important factor in any camera decision. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The LX100 was launched at a markedly lower price (by 40 percent) than the RX10 III, 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.

 

Sensor comparison: Panasonic LX100 vs Sony RX10 III

The size of the imaging sensor is a crucial determinant of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units 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 Panasonic LX100 features a Four Thirds sensor and the Sony RX10 III an one-inch sensor. The sensor area in the RX10 III is 48 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 2.7. The sensor in the LX100 has a native 4:3 aspect ratio, while the one in the RX10 III offers a 3:2 aspect.

Panasonic LX100 and Sony RX10 III sensor measures

Despite having a smaller sensor, the RX10 III offers a higher resolution of 20 megapixel, compared with 12.7 MP of the LX100. This megapixel advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 2.41μm versus 4.21μm for the LX100). However, it should be noted that the RX10 III is a somewhat more recent model (by 1 year and 6 months) than the LX100, and its sensor might have benefitted from technological advances during this time that partly offset its pixel-size disadvantage.

LX100 versus RX10 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 Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar image quality. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
Panasonic LX100» Four Thirds 12.7 4112 30884K/30p22.312.555367Panasonic LX100
Sony RX10 III« 1-inch 20.0 5472 36484K/30p23.112.647270Sony RX10 III
Canon G3 X« » 1-inch 20.0 5472 36481080/60p21.412.352163Canon G3 X
Canon G5 X« » 1-inch 20.0 5472 36481080/60p----Canon G5 X
Canon G1 X Mark II« » 1.5-inch 13.0 4160 31201080/30p21.510.858158Canon G1 X Mark II
Canon G1 X« » 1.5-inch 14.2 4352 32641080/24p21.710.864460Canon G1 X
Fujifilm X30« » 2/3 12.0 4000 30001080/60p----Fujifilm X30
Panasonic FZ1000« » 1-inch 20.0 5472 36484K/30p22.111.751764Panasonic FZ1000
Panasonic GM5« » Four Thirds 15.8 4592 34481080/60p22.111.772166Panasonic GM5
Panasonic GM1« » Four Thirds 15.8 4592 34481080/60i22.311.766066Panasonic GM1
Sony RX10 IV« » 1-inch 20.0 5472 36484K/30p----Sony RX10 IV
Sony RX10 II« » 1-inch 20.0 5472 36484K/30p23.012.653170Sony RX10 II
Sony RX100 IV« » 1-inch 20.0 5472 36484K/30p22.812.659170Sony RX100 IV
Sony RX100 III« » 1-inch 20.0 5472 36481080/60p22.412.349567Sony RX100 III
Sony RX10« » 1-inch 20.0 5472 36481080/60p22.912.647469Sony RX10
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 also of capturing video footage. 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: Panasonic LX100 vs Sony RX10 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 LX100 offers a higher resolution than the one in the RX10 III (2764k vs 2359k dots). The adjacent table lists some of the other core features of the Panasonic LX100 and Sony RX10 III along with similar information for a selection of comparators. If you need more detail on the specs, you can find comprehensive listings, for example, 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
Panasonic LX100»2764 n 3.0 921 fixed n 4000 11.0 n Y Panasonic LX100
Sony RX10 III«2359 Y 3.0 1229 tilting n 2000 14.0 Y Y Sony RX10 III
Canon G3 X« »- n 3.2 1620 tilting Y 2000 5.9 Y Y Canon G3 X
Canon G5 X« »2360 n 3.0 1040 swivel Y 2000 5.9 Y Y Canon G5 X
Canon G1 X Mark II« »- n 3.0 1040 tilting Y 4000 5.2 Y Y Canon G1 X Mark II
Canon G1 X« »optical n 3.0 922 Swivel n 4000 1.9 Y Y Canon G1 X
Fujifilm X30« »2360 n 3.0 920 tilting n 4000 12.0 Y Y Fujifilm X30
Panasonic FZ1000« »2359 n 3.0 921 swivel n 4000 12.0 Y Y Panasonic FZ1000
Panasonic GM5« »1166 n 3.0 921 fixed Y 500 5.8 n n Panasonic GM5
Panasonic GM1« »- n 3.0 1036 fixed Y 500 5.0 Y n Panasonic GM1
Sony RX10 IV« »2359 Y 3.0 1440 tilting Y 2000 24.0 Y Y Sony RX10 IV
Sony RX10 II« »2359 Y 3.0 1229 tilting n 3200 14.0 Y Y Sony RX10 II
Sony RX100 IV« »2359 n 3.0 1228 tilting n 2000 16.0 Y Y Sony RX100 IV
Sony RX100 III« »1440 n 3.0 1229 tilting n 2000 10.0 Y Y Sony RX100 III
Sony RX10« »1440 Y 3.0 1229 tilting n 3200 10.0 Y Y Sony RX10
Sony RX100 II« »- n 3.0 1229 tilting n 2000 10.0 Y Y Sony RX100 II

The reported shutter speed and shutter burst refer to the use of the mechanical shutter. In addition, the LX100 features an electronic shutter, which makes silent shooting and higher burst speeds possible. However, this mode is less suitable for photographing moving objects (rolling shutter) or shooting under artificial light sources (flickering).

Both the LX100 and the RX10 III have zoom lenses build in. The LX100 has a 24-75mm f/1.7-2.8 optic and the RX10 III offers a 24-600mm f/2.4-4.0 (focal lengths in full frame equivalent terms). Hence, the Panasonic and Sony provide the same view at the wide-angle end, but the Sony has more tele-photo reach at the long end. The LX100 offers the faster maximum aperture.

The LX100 is a current model that online retailers, such as amazon, will have in stock. In contrast, the RX10 III has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the RX10 III was succeeded by the Sony RX10 IV.

Review summary: Panasonic LX100 vs Sony RX10 III

So how do things add up? Is there a clear favorite between the Panasonic LX100 and the Sony RX10 III? Below is a summary of the relative strengths of each of the two contestants.

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Advantages of the Panasonic Lumix DMC-LX100:

  • More detailed viewfinder: Has higher resolution electronic viewfinder (2764k vs 2359k dots).
  • Faster shutter: Has higher mechanical shutter speed (4000/sec vs 2000/sec) to freeze action.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Better light gathering: Has a lens with a wider maximum aperture (f/1.7 vs f/2.4).
  • More compact: Is smaller (115x66mm vs 133x94mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 658g or 63 percent) and hence easier to carry around.
  • More affordable: Was introduced into a lower priced category (40 percent cheaper at launch).
  • More heavily discounted: Has been on the market for longer (launched in September 2014).

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

  • More detail: Has more megapixels (20 vs 12.7MP), which boosts linear resolution by 28%.
  • Easier setting verification: Has a control panel on top to check shooting parameters.
  • More detailed LCD: Has a higher resolution rear screen (1229k vs 921k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Faster burst: Shoots at higher frequency (14 vs 11 flaps/sec) to capture the decisive moment.
  • More tele-reach: Has a longer tele-lens for perspective compression and subject magnification.
  • Longer lasting: Gets more shots (420 versus 300) out of a single battery charge.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
  • More modern: Was introduced somewhat (1 year and 6 months) more recently.

If the number of relative strengths (bullet points above) is taken as a guide, the RX10 III emerges as the winner of the match-up (10 : 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.

LX100 08:10 RX10 III

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it says nothing about, for example, the handling, responsiveness, and overall imaging quality of the LX100 and the RX10 III in practical situations. 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 why hands-on reviews by experts are important. 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). 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
Panasonic LX100»HiRec85/1005/54/55/5 Sep 2014 899 i i Panasonic LX100
Sony RX10 III«Rec84/1004.5/54.5/54.5/5 Mar 2016 1,499- i Sony RX10 III
Canon G3 X« »Rec-4.5/53.5/54/5 Jun 2015 999 i i Canon G3 X
Canon G5 X« »HiRec78/1004.5/54/54.5/5 Oct 2015 799 i i Canon G5 X
Canon G1 X Mark II« »Rec77/1004/54/54.5/5 Feb 2014 799 i i Canon G1 X Mark II
Canon G1 X« »Rec76/1004/54/54.5/5 Jan 2012 799- i Canon G1 X
Fujifilm X30« »-76/1004.5/54/54.5/5 Aug 2014 599 i i Fujifilm X30
Panasonic FZ1000« »HiRec82/1004.5/54.5/54.5/5 Jun 2014 899- i Panasonic FZ1000
Panasonic GM5« »Rec77/1005/55/54.5/5 Sep 2014 749- i Panasonic GM5
Panasonic GM1« »Rec78/1005/54.5/54.5/5 Oct 2013 749- i Panasonic GM1
Sony RX10 IV« »Rec84/1004.5/5-5/5 Sep 2017 1,699 i i Sony RX10 IV
Sony RX10 II« »HiRec82/1004.5/54.5/54/5 Jun 2015 1,299- i Sony RX10 II
Sony RX100 IV« »HiRec85/1004/54.5/54.5/5 Jun 2015 999- i Sony RX100 IV
Sony RX100 III« »HiRec82/1004.5/54.5/55/5 May 2014 799- i Sony RX100 III
Sony RX10« »Rec80/1004.5/54.5/54.5/5 Oct 2013 1,299- i Sony RX10
Sony RX100 II« »HiRec79/1004.5/55/54.5/5 Jun 2013 749- i Sony RX100 II

The above review scores should be interpreted with care, though. The ratings are only valid when refering to cameras in the same category and of the same age. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date 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 are interested in seeing how other cameras pair up, just make a corresponding selection in the search boxes below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting. If you do not see the camera that you are looking for, kindly get in touch, and I will try to locate and add the respective data to the application.

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