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Olympus E-M5 III vs Panasonic GH3

The Olympus OM-D E-M5 Mark III and the Panasonic Lumix DMC-GH3 are two enthusiast cameras that were officially introduced, respectively, in October 2019 and September 2012. Both the E-M5 III and the GH3 are mirrorless interchangeable lens cameras that are equipped with a Four Thirds sensor. The Olympus has a resolution of 20.2 megapixels, whereas the Panasonic provides 15.9 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications
Olympus E-M5 III
versus
Panasonic GH3
Olympus E-M5 III   Panasonic GH3
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 1080/60p Video
ISO 200-25,600 ISO 200-12,800 (125 - 25,600)
Electronic viewfinder (2360k dots) Electronic viewfinder (1746k dots)
3.0" LCD – 1040k dots 3.0" LCD – 614k dots
Swivel touchscreen Swivel touchscreen
10 shutter flaps per second 6 shutter flaps per second
In-body stabilizationLens stabilization only
Weathersealed bodyWeathersealed body
310 shots per battery charge540 shots per battery charge
125 x 85 x 50 mm, 414 g 133 x 93 x 82 mm, 550 g
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Check E-M5 III offers at
ebay.com
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Check GH3 offers at
ebay.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus OM-D E-M5 Mark III and the Panasonic Lumix DMC-GH3? 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.

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Body comparison

An illustration of the physical size and weight of the Olympus E-M5 III and the Panasonic GH3 is provided in the side-by-side display below. 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.

The E-M5 III can be obtained in two different colors (black, silver), while the GH3 is only available in black.

Size Olympus E-M5 III vs Panasonic GH3
Compare E-M5 III versus GH3 top
Comparison E-M5 III or GH3 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic GH3 is notably larger (16 percent) than the Olympus E-M5 III. Moreover, the GH3 is markedly heavier (33 percent) than the E-M5 III. 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 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.

Concerning battery life, the E-M5 III gets 310 shots out of its Olympus BLS-50 battery, while the GH3 can take 540 images on a single charge of its Panasonic DMW-BLF19 power pack. The power pack in the E-M5 III can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

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Body Specifications
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price
Street
Price
1.
 
Olympus E-M5 III 125 mm 85 mm 50 mm 414 g 310 i Oct 2019 US$ 1 199ebay.com
2.
 
Panasonic GH3 133 mm 93 mm 82 mm 550 g 540 i Sep 2012 US$ 1 299ebay.com
3.
 
Olympus E-M1 130 mm 94 mm 63 mm 497 g 350 i Sep 2013 US$ 1 399ebay.com
4.
 
Olympus E-M1 III 134 mm 91 mm 69 mm 580 g 420 i Feb 2020 US$ 1 799ebay.com
5.
 
Olympus E-M1X 144 mm 147 mm 75 mm 997 g 870 i Jan 2019 US$ 2 999ebay.com
6.
 
Olympus E-M5 122 mm 89 mm 43 mm 425 g 360 i Feb 2012 US$ 1 299ebay.com
7.
 
Olympus E-M5 II 124 mm 85 mm 45 mm 469 g 310 i Feb 2015 US$ 1 099ebay.com
8.
 
Olympus E-M10 IV 122 mm 84 mm 49 mm 383 g 360 i Aug 2020 US$ 699 amazon.com
9.
 
Olympus PEN-F 125 mm 72 mm 37 mm 427 g 330 i Jan 2016 US$ 1 199ebay.com
10.
 
OM System OM-5 125 mm 85 mm 50 mm 414 g 310 i Oct 2022 US$ 1 199 amazon.com
11.
 
Panasonic G5 120 mm 83 mm 71 mm 396 g 320 i Jul 2012 US$ 599ebay.com
12.
 
Panasonic G95 130 mm 94 mm 77 mm 536 g 290 i Apr 2019 US$ 999ebay.com
13.
 
Panasonic GH2 124 mm 90 mm 76 mm 442 g 330 i Sep 2010 US$ 899ebay.com
14.
 
Panasonic GH4 133 mm 93 mm 84 mm 560 g 500 i Feb 2014 US$ 1 499ebay.com
15.
 
Panasonic GX8 133 mm 78 mm 63 mm 487 g 330 i Jul 2015 US$ 1 199ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price
Street
Price
  empty Camera
Model

Any camera decision will obviously take relative prices into account. 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 E-M5 III was somewhat cheaper (by 8 percent) than the GH3 at launch, but both cameras fall into the same price category. 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

The size of the sensor inside a digital camera is one of the key determinants 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. 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 are more costly to manufacture and tend to 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.

Olympus E-M5 III and Panasonic GH3 sensor measures

While the two cameras under review share the same sensor size, the E-M5 III offers a higher resolution of 20.2 megapixels, compared with 15.9 MP of the GH3. This megapixels advantage translates into a 13 percent gain in linear resolution. On the other hand, these sensor specs imply that the E-M5 III 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 GH3). In this context, it should be noted, however, that the E-M5 III is much more recent (by 7 years and 1 month) than the GH3, and its sensor will have benefitted from technological advances during this time that compensate for the smaller pixel size. Coming back to sensor resolution, it should be mentioned that the E-M5 III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Olympus E-M5 III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the E-M5 III for good quality output (200 dots per inch) amounts to 25.9 x 19.4 inches or 65.8 x 49.4 cm, for very good quality (250 dpi) 20.7 x 15.6 inches or 52.7 x 39.5 cm, and for excellent quality (300 dpi) 17.3 x 13 inches or 43.9 x 32.9 cm. The corresponding values for the Panasonic GH3 are 23 x 17.3 inches or 58.5 x 43.9 cm for good quality, 18.4 x 13.8 inches or 46.8 x 35.1 cm for very good quality, and 15.4 x 11.5 inches or 39 x 29.3 cm for excellent quality prints.

The E-M5 III has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

Unlike the GH3, the E-M5 III has the capacity to capture high quality composite images (80MP) by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).

The Olympus OM-D E-M5 Mark III has a native sensitivity range from ISO 200 to ISO 25600, which can be extended to ISO 64-25600. The corresponding ISO settings for the Panasonic Lumix DMC-GH3 are ISO 200 to ISO 12800, with the possibility to increase the ISO range to 125-25600.

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

E-M5 III versus GH3 MP

For many cameras, data on sensor performance has been reported by DXO Mark. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

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Sensor Characteristics
  empty Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Olympus E-M5 III Four Thirds 20.2 5184 38884K/30p23.313.1132476
2.
 
Panasonic GH3 Four Thirds 15.9 4608 34561080/60p22.712.481271
3.
 
Olympus E-M1 Four Thirds 15.9 4608 34561080/30p23.012.775773
4.
 
Olympus E-M1 III Four Thirds 20.2 5184 38884K/30p23.313.1135676
5.
 
Olympus E-M1X Four Thirds 20.2 5184 38884K/30p23.213.0125475
6.
 
Olympus E-M5 Four Thirds 15.9 4608 34561080/60i22.812.382671
7.
 
Olympus E-M5 II Four Thirds 15.9 4608 34561080/60p23.012.584273
8.
 
Olympus E-M10 IV Four Thirds 20.2 5184 38884K/30p23.313.2140276
9.
 
Olympus PEN-F Four Thirds 20.2 5184 38881080/60p23.112.489474
10.
 
OM System OM-5 Four Thirds 20.2 5184 38884K/30p23.413.4162278
11.
 
Panasonic G5 Four Thirds 15.9 4608 34561080/60p21.411.661861
12.
 
Panasonic G95 Four Thirds 20.2 5184 38884K/30p23.213.0127375
13.
 
Panasonic GH2 Four Thirds 15.9 4608 34561080/60i21.211.365560
14.
 
Panasonic GH4 Four Thirds 15.9 4608 34564K/30p23.212.879174
15.
 
Panasonic GX8 Four Thirds 20.2 5184 38884K/30p23.512.680675
Note: DXO values in italics represent estimates based on sensor size and age.
  empty Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
  empty Camera
Model

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 E-M5 III provides a higher video resolution than the GH3. It can shoot video footage at 4K/30p, while the Panasonic is limited to 1080/60p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. The two cameras under consideration are similar with respect to both having an electronic viewfinder. However, the one in the E-M5 III offers a substantially higher resolution than the one in the GH3 (2360k vs 1746k dots). The table below summarizes some of the other core capabilities of the Olympus E-M5 III and Panasonic GH3 in connection with corresponding information for a sample of similar cameras.

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Core Features
  empty Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Specifications
(inch/000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Max
Shutter
Speed *
Max
Shutter
Flaps *
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Olympus E-M5 III2360 i3.0 / 1040 swivel i 1/8000s 10.0/s i i
2.
 
Panasonic GH31746 i3.0 / 614 swivel i 1/4000s 6.0/s i i
3.
 
Olympus E-M12360 i3.0 / 1037 tilting i 1/8000s 10.0/s i i
4.
 
Olympus E-M1 III2360 i3.0 / 1037 swivel i 1/8000s 18.0/s i i
5.
 
Olympus E-M1X2360 i3.0 / 1037 swivel i 1/8000s 18.0/s i i
6.
 
Olympus E-M51440 i3.0 / 610 tilting i 1/4000s 9.0/s i i
7.
 
Olympus E-M5 II2360 i3.0 / 1037 swivel i 1/8000s 10.0/s i i
8.
 
Olympus E-M10 IV2360 i3.0 / 1040 tilting i 1/4000s 15.0/s i i
9.
 
Olympus PEN-F2360 i3.0 / 1037 swivel i 1/8000s 10.0/s i i
10.
 
OM System OM-52360 i3.0 / 1040 swivel i 1/8000s 10.0/s i i
11.
 
Panasonic G51440 i3.0 / 920 swivel i 1/4000s 6.0/s i i
12.
 
Panasonic G952360 i3.0 / 1240 swivel i 1/4000s 9.0/s i i
13.
 
Panasonic GH21534 i3.0 / 460 swivel i 1/4000s 3.0/s i i
14.
 
Panasonic GH42359 i3.0 / 1036 swivel i 1/8000s 12.0/s i i
15.
 
Panasonic GX82360 i3.0 / 1040 swivel i 1/8000s 10.0/s i i
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
  empty Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Specifications
(inch/000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Max
Shutter
Speed *
Max
Shutter
Flaps *
Built-in
Flash
(yes/no)
Built-in
Image
Stab
  empty Camera
Model

One feature that differentiates the E-M5 III and the GH3 is in-body image stabilization (IBIS). The E-M5 III reduces the risk of handshake-induced blur with all attached lenses, while the GH3 offers no blur reduction with lenses that themselves do not provide optical image stabilization.

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 Olympus E-M5 III and the Panasonic GH3 both have 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 E-M5 III and the GH3 write their files to SDXC cards. The E-M5 III supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the GH3 can use UHS-I cards (up to 104 MB/s).

Connectivity comparison

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 Olympus OM-D E-M5 Mark III and Panasonic Lumix DMC-GH3 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
  empty Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Olympus E-M5 IIIistereo / monoiimicro2.0iii
2.
 
Panasonic GH3istereo / monoiimini2.0iii
3.
 
Olympus E-M1istereo / monoiimicro2.0iii
4.
 
Olympus E-M1 IIIistereo / monoiimicro3.1iii
5.
 
Olympus E-M1Xistereo / monoiimicro3.0iii
6.
 
Olympus E-M5istereo / monoiimini2.0iii
7.
 
Olympus E-M5 IIistereo / monoiimicro2.0iii
8.
 
Olympus E-M10 IVistereo / monoiimicro2.0iii
9.
 
Olympus PEN-Fistereo / monoiimicro2.0iii
10.
 
OM System OM-5istereo / monoiimicro2.0iii
11.
 
Panasonic G5istereo / monoiimini2.0iii
12.
 
Panasonic G95istereo / monoiimicro2.0iii
13.
 
Panasonic GH2istereo / monoiimini2.0iii
14.
 
Panasonic GH4istereo / monoiimicro2.0iii
15.
 
Panasonic GX8istereo / monoiimicro2.0iii
  empty Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
  empty Camera
Model

It is notable that the GH3 has a headphone jack, which makes it possible to attach external headphones and monitor the quality of sound during the recording process. The E-M5 III lacks such a headphone port.

Studio photographers will appreciate that the Panasonic GH3 (unlike the E-M5 III) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the E-M5 III and the GH3 have been discontinued, but can regularly be found used on ebay. The GH3 was replaced by the Panasonic GH4, while the E-M5 III was followed by the OM System OM-5. Further information on the features and operation of the E-M5 III and GH3 can be found, respectively, in the Olympus E-M5 III Manual (free pdf) or the online Panasonic GH3 Manual.

Review summary

So what conclusions can be drawn? Is the Olympus E-M5 III better than the Panasonic GH3 or vice versa? The listing below highlights the relative strengths of the two models.

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Advantages of the Olympus OM-D E-M5 Mark III:

  • More detail: Offers more megapixels (20.2 vs 15.9MP) with a 13% higher linear resolution.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • High quality composites: Can combine several shots after pixel-shifting its sensor.
  • Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • More detailed viewfinder: Has higher resolution electronic viewfinder (2360k vs 1746k dots).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.68x vs 0.67x).
  • More detailed LCD: Has a higher resolution rear screen (1040k vs 614k dots).
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (10 vs 6 flaps/sec) to capture the decisive moment.
  • More compact: Is smaller (125x85mm vs 133x93mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 136g or 25 percent) and hence easier to carry around.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Sharper images: Has hand-shake reducing image stabilization built-in.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
  • More modern: Reflects 7 years and 1 month of technical progress since the GH3 launch.

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Reasons to prefer the Panasonic Lumix DMC-GH3:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • Longer lasting: Gets more shots (540 versus 310) out of a single battery charge.
  • Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • More heavily discounted: Has been around for much longer (launched in September 2012).

If the number of relative strengths (bullet points above) is taken as a guide, the E-M5 III is the clear winner of the match-up (17 : 6 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. 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.

E-M5 III 17:06 GH3

How about other alternatives? Do the specifications of the Olympus E-M5 III and the Panasonic GH3 place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera listing whether the two cameras rank among the cream of the crop.

In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains incomplete and does no justice, for example, to the way the E-M5 III or the GH3 perform in practice. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.

Expert reviews

This is why hands-on reviews by experts are important. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). 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.

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Expert Camera Reviews
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price
Street
Price
1.
 
Olympus E-M5 III5/5+5/582/1004.5/54.5/5 Oct 2019 US$ 1 199ebay.com
2.
 
Panasonic GH35/5+ +..79/1004.5/54.5/5 Sep 2012 US$ 1 299ebay.com
3.
 
Olympus E-M15/5+ +..84/1004.5/54.5/5 Sep 2013 US$ 1 399ebay.com
4.
 
Olympus E-M1 III5/5..5/583/1004.5/54/5 Feb 2020 US$ 1 799ebay.com
5.
 
Olympus E-M1X4.5/5o5/585/1004.5/5.. Jan 2019 US$ 2 999ebay.com
6.
 
Olympus E-M54/5+ +..80/1004.5/55/5 Feb 2012 US$ 1 299ebay.com
7.
 
Olympus E-M5 II5/5+ +4.5/581/1005/55/5 Feb 2015 US$ 1 099ebay.com
8.
 
Olympus E-M10 IV4.5/5..5/581/1004.5/54.5/5 Aug 2020 US$ 699 amazon.com
9.
 
Olympus PEN-F....4/582/1004.5/55/5 Jan 2016 US$ 1 199ebay.com
10.
 
OM System OM-55/5..4.5/583/1005/54.5/5 Oct 2022 US$ 1 199 amazon.com
11.
 
Panasonic G53/5+ +....4.5/54.5/5 Jul 2012 US$ 599ebay.com
12.
 
Panasonic G954.5/5+4.5/583/1004.5/54.5/5 Apr 2019 US$ 999ebay.com
13.
 
Panasonic GH25/5+ +..79/1004.5/55/5 Sep 2010 US$ 899ebay.com
14.
 
Panasonic GH45/5+ +..85/1005/55/5 Feb 2014 US$ 1 499ebay.com
15.
 
Panasonic GX85/5+..82/1004.5/54.5/5 Jul 2015 US$ 1 199ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price
Street
Price
  empty  Camera 
 Model 

The above review scores should be interpreted with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

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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.

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  • Fujifilm X-A1
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  • Fujifilm X-S10
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  • Fujifilm X-T1
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  • Fujifilm X-T50
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  • Fujifilm X10
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  • Fujifilm X70
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  • Fujifilm X100F
  • Fujifilm X100V
  • Fujifilm X100VI
  • Fujifilm XF10
  • Fujifilm XQ1
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  • Fujifilm XP120
  • Fujifilm XP130
  • Fujifilm XP140
  • Hasselblad X1D
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  • Hasselblad X2D 100C
  • Kodak AZ901
  • Kodak S-1
  • Leica C-LUX
  • Leica CL
  • Leica D-LUX Typ 109
  • Leica D-LUX 5
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  • Leica Digilux 3
  • Leica M Typ 240
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  • Leica M8
  • Leica M9
  • Leica M10
  • Leica M10-P
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  • Leica Q Typ 116
  • Leica Q2
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  • Leica S Typ 006
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  • Leica SL
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  • Leica T
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  • Leica V-LUX 1
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  • Leica V-LUX Typ 114
  • Leica V-LUX 5
  • Leica X1
  • Leica X2
  • Leica X Vario
  • Leica X Typ 113
  • Leica X-U Typ 113
  • Leitz Ur-Leica
  • Nikon 1 J4
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  • Nikon 1 V1
  • Nikon 1 V2
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  • Nikon Coolpix A
  • Nikon A1000
  • Nikon B500
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  • Nikon D1
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  • Nikon D5000
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  • Nikon Z8
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  • Nikon Zf
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  • Olympus E-1
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  • Olympus E-450
  • Olympus E-500
  • Olympus E-510
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  • Olympus E-600
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  • Olympus E-M1
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  • Olympus E-M1 III
  • Olympus E-M1X
  • Olympus E-M5
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  • Olympus E-M5 III
  • Olympus E-M10
  • Olympus E-M10 II
  • Olympus E-M10 III
  • Olympus E-M10 IV
  • Olympus E-P1
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  • Olympus E-P5
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  • Olympus E-PL1
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  • Olympus E-PL5
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  • Olympus E-PM1
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  • Olympus PEN-F
  • Olympus Stylus 1
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  • Olympus TG-4
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  • Olympus XZ-1
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  • OM System OM-1
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  • OM System OM-3
  • OM System OM-5
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  • OM System TG-7
  • Panasonic FZ80
  • Panasonic FZ80D
  • Panasonic FZ100
  • Panasonic FZ150
  • Panasonic FZ200
  • Panasonic FZ300
  • Panasonic FZ1000
  • Panasonic FZ1000 II
  • Panasonic FZ2500
  • Panasonic G1
  • Panasonic G2
  • Panasonic G3
  • Panasonic G5
  • Panasonic G6
  • Panasonic G7
  • Panasonic G9
  • Panasonic G9 II
  • Panasonic G10
  • Panasonic G85
  • Panasonic G97
  • Panasonic G95
  • Panasonic G100
  • Panasonic GF1
  • Panasonic GF2
  • Panasonic GF3
  • Panasonic GF5
  • Panasonic GF6
  • Panasonic GF7
  • Panasonic GH1
  • Panasonic GH2
  • Panasonic GH3
  • Panasonic GH4
  • Panasonic GH5
  • Panasonic GH5 II
  • Panasonic GH5s
  • Panasonic GH6
  • Panasonic GH7
  • Panasonic GM1
  • Panasonic GM5
  • Panasonic GX1
  • Panasonic GX7
  • Panasonic GX8
  • Panasonic GX9
  • Panasonic GX85
  • Panasonic GX850
  • Panasonic L1
  • Panasonic L10
  • Panasonic LF1
  • Panasonic LX5
  • Panasonic LX7
  • Panasonic LX10
  • Panasonic LX100
  • Panasonic LX100 II
  • Panasonic S1
  • Panasonic S1 II
  • Panasonic S1H
  • Panasonic S1R
  • Panasonic S1R II
  • Panasonic S5
  • Panasonic S5 II
  • Panasonic S9
  • Panasonic TS7
  • Panasonic ZS70
  • Panasonic ZS80
  • Panasonic ZS100
  • Panasonic ZS200
  • Pentax 645D
  • Pentax 645Z
  • Pentax K-1
  • Pentax K-1 II
  • Pentax K-3
  • Pentax K-3 II
  • Pentax K-3 III
  • Pentax K-5
  • Pentax K-5 II
  • Pentax K-30
  • Pentax K-50
  • Pentax K-70
  • Pentax K-500
  • Pentax KP
  • Pentax K-S1
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  • Pentax MX-1
  • Pentax Q
  • Pentax WG-8
  • Pentax WG-90
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  • Ricoh GR
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  • Ricoh WG-6
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  • Samsung NX1
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  • Sigma fp
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  • Sony A1
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  • Sony A7
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  • Sony A7C
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  • Sony A7C R
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  • Sony A7S
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  • Sony A9
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  • Sony A58
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  • Sony A99
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  • Sony A850
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  • Sony H200
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  • Sony WX800
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  • YI M1
  • Zeiss ZX1
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Specifications: Olympus E-M5 III vs Panasonic GH3

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 Specifications
Camera Model Olympus E-M5 III Panasonic GH3
Camera Type Mirrorless system camera Mirrorless system camera
Camera Lens Micro Four Thirds lenses Micro Four Thirds lenses
Launch Date October 2019 September 2012
Launch Price USD 1,199 USD 1,299
Sensor Specs Olympus E-M5 III Panasonic GH3
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 2.0x 2.0x
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
Moiré control no AA filter Anti-Alias filter
Movie Capability 4K/30p Video 1080/60p Video
ISO Setting 200 - 25,600 ISO 200 - 12,800 ISO
ISO Boost 64 - 25,600 ISO 125 - 25,600 ISO
Image Processor TruePic VIII Venus VII FHD
DXO Sensor Quality (score) .. 71
DXO Color Depth (bits) .. 22.7
DXO Dynamic Range (EV) .. 12.4
DXO Low Light (ISO) .. 812
Screen Specs Olympus E-M5 III Panasonic GH3
Viewfinder Type Electronic viewfinder Electronic viewfinder
Viewfinder Field of View 100% 100%
Viewfinder Magnification 0.68x 0.67x
Viewfinder Resolution 2360k dots 1746k dots
LCD Framing Live View Live View
Rear LCD Size 3.0inch 3.0inch
LCD Resolution 1040k dots 614k dots
LCD Attachment Swivel screen Swivel screen
Touch Input Touchscreen Touchscreen
Shooting Specs Olympus E-M5 III Panasonic GH3
Focus System On-Sensor Phase-detect Contrast-detect AF
Manual Focusing AidFocus Peakingno Peaking Feature
Continuous Shooting 10 shutter flaps/s 6 shutter flaps/s
Electronic Shutterup to 1/32000sYES
Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
Image StabilizationIn-body stabilizationLens stabilization only
Fill Flash no On-Board Flash Built-in Flash
Storage Medium SDXC cards SDXC cards
Single or Dual Card Slots Single card slot Single card slot
UHS card support UHS-II UHS-I
Connectivity Specs Olympus E-M5 III Panasonic GH3
External Flash Hotshoe Hotshoe
Studio Flash no PC Sync PC Sync socket
USB Connector USB 2.0 USB 2.0
HDMI Port micro HDMI mini HDMI
Microphone Port External MIC port External MIC port
Headphone Socket no Headphone port Headphone port
Wifi Support Wifi built-in Wifi built-in
Bluetooth Support Bluetooth built-in no Bluetooth
Body Specs Olympus E-M5 III Panasonic GH3
Environmental SealingWeathersealed bodyWeathersealed body
Battery Type Olympus BLS-50 Panasonic DMW-BLF19
Battery Life (CIPA)310 shots per charge540 shots per charge
In-Camera Charging USB charging no USB charging
Body Dimensions 125 x 85 x 50 mm
(4.9 x 3.3 x 2.0 in)
133 x 93 x 82 mm
(5.2 x 3.7 x 3.2 in)
Camera Weight 414 g (14.6 oz) 550 g (19.4 oz)
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