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Panasonic GX8 vs Olympus E-M10 III

The Panasonic Lumix DMC-GX8 and the Olympus OM-D E-M10 Mark III are two digital cameras that were officially introduced, respectively, in July 2015 and August 2017. Both the GX8 and the E-M10 III are mirrorless interchangeable lens cameras that are equipped with a Four Thirds sensor. The Panasonic has a resolution of 20.2 megapixels, whereas the Olympus provides 15.9 MP. Read on to find out how these two cameras compare with respect to their body size, their sensors, their features, their input-output connections, and their reception by expert reviewers.


Headline Specifications
Panasonic GX8   Olympus E-M10 III
Panasonic GX8 Olympus E-M10 III
Mirrorless system camera Mirrorless system camera
Micro Four Thirds lenses Micro Four Thirds lenses
20.2 MP, Four Thirds Sensor 15.9 MP, Four Thirds Sensor
4K/30p Video 4K/30p Video
ISO 200-25600 ISO 200-25600
Electronic viewfinder (2360k dots) Electronic viewfinder (2360k dots)
3.0" LCD, 1040k dots 3.0" LCD, 1040k dots
Swivel touchscreen Tilting touchscreen
10 shutter flaps per second 8.6 shutter flaps per second
In-body stabilizationIn-body stabilization
Weathersealed bodyNot weather sealed
330 shots per battery charge330 shots per battery charge
133 x 78 x 63 mm, 487 g 122 x 84 x 50 mm, 410 g

Body comparison: Panasonic GX8 vs Olympus E-M10 III

The side-by-side display below illustrates the physical size and weight of the Panasonic GX8 and the Olympus E-M10 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 width, height and depth measures 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 GX8 – represents the basis or 100 percent across all the size and weight measures).

Compare Panasonic GX8 and Olympus E-M10 III
Compare GX8 versus E-M10 III top
Compare GX8 or E-M10 III rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-M10 III is somewhat smaller (1 percent) than the Panasonic GX8. Moreover, the E-M10 III is markedly lighter (16 percent) than the GX8. It is worth mentioning in this context that the GX8 is splash and dust resistant, while the E-M10 III does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. In this particular case, both cameras feature the same lens mount, so that they can use the same lenses. You can compare the optics available in the Micro Four Thirds Lens Catalog. Mirrorless cameras, such as the two under consideration, have the additional advantage of having a short flange to focal plane distance, which makes it possible to mount many lenses from other systems onto the camera via adapters.

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.

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 GX8» 5.2 in 3.1 in 2.5 in 17.2 oz 330 Y Jul 2015 1,199- i Panasonic GX8
Olympus E-M10 III« 4.8 in 3.3 in 2.0 in 14.5 oz 330 n Aug 2017 649 i i Olympus E-M10 III
Olympus E-PL9« » 4.6 in 2.7 in 1.5 in 13.4 oz 350 n Feb 2018 549 i i Olympus E-PL9
Olympus E-M1 II« » 5.3 in 3.6 in 2.6 in 20.2 oz 440 Y Sep 2016 1,999 i i Olympus E-M1 II
Olympus E-PL8« » 4.5 in 2.6 in 1.5 in 12.6 oz 350 n Sep 2016 549- i Olympus E-PL8
Olympus PEN-F« » 4.9 in 2.8 in 1.5 in 15.1 oz 330 n Jan 2016 1,199 i i Olympus PEN-F
Olympus E-M5 II« » 4.9 in 3.3 in 1.8 in 16.5 oz 310 Y Feb 2015 1,099 i i Olympus E-M5 II
Olympus E-M10 II« » 4.7 in 3.3 in 1.9 in 13.8 oz 320 n Aug 2015 799- i Olympus E-M10 II
Olympus E-M10« » 4.7 in 3.2 in 1.8 in 14.0 oz 320 n Jan 2014 699- i Olympus E-M10
Olympus E-M1« » 5.1 in 3.7 in 2.5 in 17.5 oz 350 Y Sep 2013 1,399- i Olympus E-M1
Olympus E-M5« » 4.8 in 3.5 in 1.7 in 15.0 oz 360 Y Feb 2012 1,299- i Olympus E-M5
Panasonic GX9« » 4.9 in 2.8 in 1.9 in 14.4 oz 260 n Feb 2018 849 i i Panasonic GX9
Panasonic G85« » 5.0 in 3.5 in 2.9 in 17.8 oz 330 Y Sep 2016 899 i i Panasonic G85
Panasonic GH4« » 5.2 in 3.7 in 3.3 in 19.8 oz 500 Y Feb 2014 1,499- i Panasonic GH4
Panasonic GX7« » 4.8 in 2.8 in 2.2 in 14.2 oz 350 n Aug 2013 999- i Panasonic GX7
Sony A6500« » 4.7 in 2.6 in 2.1 in 16.0 oz 350 Y Oct 2016 1,399 i i Sony A6500

Any camera decision will obviously take relative prices into account. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The E-M10 III was launched at a markedly lower price (by 46 percent) than the GX8, which puts it into a different market segment. 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.

 

Sensor comparison: Panasonic GX8 vs Olympus E-M10 III

The imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to 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 a Four Thirds sensor and have a format factor (sometimes also referred to as "crop factor") of 2.0. 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 feature a native aspect ratio (sensor width to sensor height) of 4:3.

In terms of underlying technology, both cameras are build around CMOS sensors.

Panasonic GX8 and Olympus E-M10 III sensor measures

While the two cameras under review share the same sensor size, the GX8 offers a higher resolution of 20.2 megapixels, compared with 15.9 MP of the E-M10 III. This megapixels advantage translates into a 13 percent gain in linear resolution. On the other hand, these sensor specs imply that the GX8 has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.34μm versus 3.76μm for the E-M10 III). Moreover, it should be noted that the E-M10 III is much more recent (by 2 years and 1 month) than the GX8, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of individual pixels. Coming back to sensor resolution, it should be mentioned that the E-M10 III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The Panasonic Lumix DMC-GX8 has a native sensitivity range from ISO 200 to ISO 25600, which can be extended to ISO 100-25600.. The Olympus OM-D E-M10 Mark III offers exactly the same ISO settings.

GX8 versus E-M10 III MP

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 table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar 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 GX8» Four Thirds 20.2 5184 38884K/30p23.512.680675Panasonic GX8
Olympus E-M10 III« Four Thirds 15.9 4608 34564K/30p----Olympus E-M10 III
Olympus E-PL9« » Four Thirds 15.9 4608 34564K/30p----Olympus E-PL9
Olympus E-M1 II« » Four Thirds 20.2 5184 38884K/30p23.712.8131280Olympus E-M1 II
Olympus E-PL8« » Four Thirds 15.9 4608 34561080/30p----Olympus E-PL8
Olympus PEN-F« » Four Thirds 20.2 5184 38881080/60p23.112.489474Olympus PEN-F
Olympus E-M5 II« » Four Thirds 15.9 4608 34561080/60p23.012.584273Olympus E-M5 II
Olympus E-M10 II« » Four Thirds 15.9 4608 34561080/60p23.112.584273Olympus E-M10 II
Olympus E-M10« » Four Thirds 15.9 4608 34561080/30p22.812.388472Olympus E-M10
Olympus E-M1« » Four Thirds 15.9 4608 34561080/30p23.012.775773Olympus E-M1
Olympus E-M5« » Four Thirds 15.9 4608 34561080/60i22.812.382671Olympus E-M5
Panasonic GX9« » Four Thirds 20.2 5184 38884K/30p----Panasonic GX9
Panasonic G85« » Four Thirds 15.8 4592 34484K/30p22.812.565671Panasonic G85
Panasonic GH4« » Four Thirds 15.9 4608 34564K/30p23.212.879174Panasonic GH4
Panasonic GX7« » Four Thirds 15.8 4592 34481080/60p22.612.271870Panasonic GX7
Sony A6500« » APS-C 24.0 6000 40004K/30p24.513.7140585Sony A6500

Many modern cameras cannot only take still pictures, but also record videos. 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 GX8 vs Olympus E-M10 III

Apart from body and sensor, cameras can and do differ across a variety of features. The GX8 and the E-M10 III 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 2360k dots. The following table reports on some other key feature differences and similarities of the Panasonic GX8, the Olympus E-M10 III, and comparable cameras.

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)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
Camera
Model
Panasonic GX8»2360 n 3.0 1040 swivel Y 8000 10.0 n Y Panasonic GX8
Olympus E-M10 III«2360 n 3.0 1040 tilting Y 4000 8.6 Y Y Olympus E-M10 III
Olympus E-PL9« »- n 3.0 1040 tilting Y 4000 8.6 Y Y Olympus E-PL9
Olympus E-M1 II« »2360 n 3.0 1037 swivel Y 8000 18.0 n Y Olympus E-M1 II
Olympus E-PL8« »- n 3.0 1037 tilting Y 4000 8.0 n Y Olympus E-PL8
Olympus PEN-F« »2360 n 3.0 1037 swivel Y 8000 10.0 n Y Olympus PEN-F
Olympus E-M5 II« »2360 n 3.0 1037 swivel Y 8000 10.0 n Y Olympus E-M5 II
Olympus E-M10 II« »2360 n 3.0 1040 tilting Y 4000 8.0 Y Y Olympus E-M10 II
Olympus E-M10« »1440 n 3.0 1037 tilting Y 4000 8.0 Y Y Olympus E-M10
Olympus E-M1« »2360 n 3.0 1037 tilting Y 8000 10.0 n Y Olympus E-M1
Olympus E-M5« »1440 n 3.0 610 tilting Y 4000 9.0 n Y Olympus E-M5
Panasonic GX9« »2760 n 3.0 1240 tilting Y 4000 9.0 Y Y Panasonic GX9
Panasonic G85« »2360 n 3.0 1040 swivel Y 4000 9.0 Y Y Panasonic G85
Panasonic GH4« »2359 n 3.0 1036 swivel Y 8000 12.0 Y n Panasonic GH4
Panasonic GX7« »2760 n 3.0 1040 tilting Y 8000 5.0 Y Y Panasonic GX7
Sony A6500« »2359 n 3.0 922 tilting Y 4000 11.0 Y Y Sony A6500

One difference between the cameras concerns the presence of an on-board flash. The E-M10 III has one, while the GX8 does not. While the built-in flash of the E-M10 III is not very powerful, it can at times be useful as a fill-in light.

The GX8 has an articulated LCD that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in snapping selfies. In contrast, the E-M10 III does not have a selfie-screen.

The reported shutter speed and shutter burst refer to the use of the mechanical shutter. In addition, the GX8 features 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).

Concerning the storage of imaging data, both the GX8 and the E-M10 III write their files to SDXC cards.

Connectivity comparison: Panasonic GX8 vs Olympus E-M10 III

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 Panasonic Lumix DMC-GX8 and Olympus OM-D E-M10 Mark III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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
Panasonic GX8»YstereomonoY-micro2.0YY-Panasonic GX8
Olympus E-M10 III«Ystereomono--micro2.0Y--Olympus E-M10 III
Olympus E-PL9« »Ystereomono--micro2.0Y-YOlympus E-PL9
Olympus E-M1 II« »YstereomonoYYmicro3.0Y--Olympus E-M1 II
Olympus E-PL8« »Ystereomono--micro2.0Y--Olympus E-PL8
Olympus PEN-F« »Ystereomono--micro2.0Y--Olympus PEN-F
Olympus E-M5 II« »YstereomonoY-micro2.0Y--Olympus E-M5 II
Olympus E-M10 II« »Ystereomono--micro2.0Y--Olympus E-M10 II
Olympus E-M10« »Ystereomono--micro2.0Y--Olympus E-M10
Olympus E-M1« »YstereomonoY-micro2.0Y--Olympus E-M1
Olympus E-M5« »Ystereomono--mini2.0---Olympus E-M5
Panasonic GX9« »Ystereomono--micro2.0Y-YPanasonic GX9
Panasonic G85« »YstereomonoY-micro2.0Y--Panasonic G85
Panasonic GH4« »YstereomonoYYmicro2.0YY-Panasonic GH4
Panasonic GX7« »Ystereomono--mini2.0YY-Panasonic GX7
Sony A6500« »YstereomonoY-micro2.0YY-Sony A6500

It is notable that the GX8 has a microphone port, which is missing on the E-M10 III. Such an external microphone input can help to substantially improve the quality of audio recordings when a good external microphone is used.

The E-M10 III is a recent model that features in the current product line-up of Olympus. In contrast, the GX8 has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the GX8 was succeeded by the Panasonic GX9.


Review summary: Panasonic GX8 vs Olympus E-M10 III

So how do things add up? Which of the two cameras – the Panasonic GX8 or the Olympus E-M10 III – has the upper hand? The listing below highlights the relative strengths of the two models.

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Reasons to prefer the Panasonic Lumix DMC-GX8:

  • More detail: Offers more megapixels (20.2 vs 15.9MP) with a 13% higher linear resolution.
  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better sound: Can connect to an external microphone for higher quality sound recording.
  • More flexible LCD: Has swivel screen for odd-angle shots in portrait or landscape orientation.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster shutter: Has higher mechanical shutter speed (8000/sec vs 4000/sec) to freeze action.
  • Faster burst: Shoots at higher frequency (10 vs 8.6 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • More heavily discounted: Has been available for much longer (launched in July 2015).

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Arguments in favor of the Olympus OM-D E-M10 Mark III:

  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Less heavy: Has a lower weight (by 77g or 16 percent) and is thus easier to take along.
  • Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
  • More affordable: Was introduced into a lower priced category (46 percent cheaper at launch).
  • More modern: Reflects 2 years and 1 month of technical progress since the GX8 launch.

If the count of individual advantages (bullet points above) is taken as a guide, the GX8 is the clear winner of the match-up (11 : 5 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.

GX8 11:05 E-M10 III

In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it says nothing about, for example, the handling, responsiveness, and overall imaging quality of the GX8 and the E-M10 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.

Expert reviews: Panasonic GX8 vs Olympus E-M10 III

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
Panasonic GX8»Rec82/1004.5/55/54.5/5 Jul 2015 1,199- i Panasonic GX8
Olympus E-M10 III«Rec80/1004.5/54/54.5/5 Aug 2017 649 i i Olympus E-M10 III
Olympus E-PL9« »Rec-4.5/5-4/5 Feb 2018 549 i i Olympus E-PL9
Olympus E-M1 II« »HiRec85/1004.5/55/54.5/5 Sep 2016 1,999 i i Olympus E-M1 II
Olympus E-PL8« »--4.5/5-4/5 Sep 2016 549- i Olympus E-PL8
Olympus PEN-F« »-82/1004.5/54.5/55/5 Jan 2016 1,199 i i Olympus PEN-F
Olympus E-M5 II« »HiRec81/1005/54.5/55/5 Feb 2015 1,099 i i Olympus E-M5 II
Olympus E-M10 II« »HiRec80/1005/55/55/5 Aug 2015 799- i Olympus E-M10 II
Olympus E-M10« »-80/1005/54.5/55/5 Jan 2014 699- i Olympus E-M10
Olympus E-M1« »HiRec84/1004.5/54.5/54.5/5 Sep 2013 1,399- i Olympus E-M1
Olympus E-M5« »HiRec80/1004.5/55/55/5 Feb 2012 1,299- i Olympus E-M5
Panasonic GX9« »Rec84/1004.5/54.5/54.5/5 Feb 2018 849 i i Panasonic GX9
Panasonic G85« »HiRec84/1005/54.5/54.5/5 Sep 2016 899 i i Panasonic G85
Panasonic GH4« »HiRec85/1005/55/55/5 Feb 2014 1,499- i Panasonic GH4
Panasonic GX7« »Rec79/1005/54.5/55/5 Aug 2013 999- i Panasonic GX7
Sony A6500« »HiRec85/1004.5/55/54.5/5 Oct 2016 1,399 i i Sony A6500

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. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, 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? If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes 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.

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    Specifications: Panasonic GX8 vs Olympus E-M10 III

    Camera Specifications
    Camera Model Panasonic GX8 Olympus E-M10 III
    Camera Type Mirrorless system camera Mirrorless system camera
    Camera Lens Micro Four Thirds lenses Micro Four Thirds lenses
    Launch Date July 2015 August 2017
    Launch Price USD 1199 USD 649
    Sensor Specs
    Sensor Technology CMOS CMOS
    Sensor Format Four Thirds Sensor Four Thirds Sensor
    Sensor Size 17.3 x 13.0 mm 17.3 x 13.0 mm
    Sensor Area 224.9 mm2 224.9 mm2
    Sensor Diagonal 21.6 mm 21.6 mm
    Crop Factor 2.0 2.0
    Sensor Resolution 20.2 Megapixels 15.9 Megapixels
    Image Resolution 5184 x 3888 pixels 4608 x 3456 pixels
    Pixel Pitch 3.34 μm 3.76 μm
    Pixel Density 8.96 MP/cm2 7.08 MP/cm2
    Movie Capability 4K/30p Video 4K/30p Video
    ISO Setting 200-25600 ISO 200-25600 ISO
    Image Processor Venus TruePic VIII
    Screen Specs
    Viewfinder Type Electronic viewfinder Electronic viewfinder
    Viewfinder Resolution 2360k dots 2360k dots
    Rear LCD Size 3.0 inch 3.0 inch
    LCD Resolution 1040k dots 1040k dots
    LCD Attachment Swivel screen Tilting screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs
    Maximum Shutter Speed 1/8000s 1/4000s
    Continuous Shooting 10 shutter flaps/s 8.6 shutter flaps/s
    Silent ShootingElectronic Shutterno E-Shutter
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash no On-Board Flash Build-in Flash
    Storage Medium SDXC cards SDXC cards
    Connectivity Specs
    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 no NFC
    Body Specs
    Environmental SealingWeathersealed bodyNot weather sealed
    Battery Type DMW-BLC12 power pack BLS-50 power pack
    Battery Life (CIPA)330 shots per charge330 shots per charge
    Body Dimensions 133 x 78 x 63 mm
    (5.2 x 3.1 x 2.5 in)
    122 x 84 x 50 mm
    (4.8 x 3.3 x 2.0 in)
    Camera Weight 487 g (17.2 oz) 410 g (14.5 oz)

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