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Olympus E-M5 II versus Panasonic G9

The Olympus OM-D E-M5 Mark II and the Panasonic Lumix DC-G9 are two enthusiast cameras that were revealed to the public, respectively, in February 2015 and November 2017. Both the E-M5 II and the G9 are mirrorless interchangeable lens cameras that are equipped with a Four Thirds sensor. The Olympus has a resolution of 15.9 megapixel, whereas the Panasonic provides 20.2 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: Olympus E-M5 II vs Panasonic G9

An illustration of the physical size and weight of the Olympus E-M5 II and the Panasonic G9 is provided 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. 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 E-M5 II – represents 100 percent across all the size and weight measures).

Compare Olympus E-M5 II vs Panasonic G9
Compare E-M5 II versus G9 top
Compare E-M5 II and G9 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic G9 is notably larger (26 percent) than the Olympus E-M5 II. Moreover, the G9 is substantially heavier (40 percent) than the E-M5 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 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 find an overview of suitable optics 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 II gets 310 shots out of its BLN-1 battery, while the G9 can take 400 images on a single charge of its DMW-BLF19 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
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
Panasonic G9« 5.4 in 3.8 in 3.6 in 23.2 oz 400 Y Nov 2017 1,699 i i Panasonic G9
Fujifilm X-H1« » 5.5 in 3.8 in 3.4 in 23.7 oz 310 Y Feb 2018 1,899 i i Fujifilm X-H1
Nikon Z6« » 5.3 in 4.0 in 2.6 in 23.8 oz 310 Y Aug 2018 1,999 i i Nikon Z6
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 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-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-P5« » 4.8 in 2.7 in 1.5 in 14.8 oz 330 n May 2013 999- i Olympus E-P5
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 GH5« » 5.5 in 3.9 in 3.4 in 25.6 oz 410 Y Jan 2017 1,999 i i Panasonic GH5
Panasonic G80« » 5.0 in 3.5 in 2.9 in 17.8 oz 330 Y Sep 2016 899 i i Panasonic G80
Panasonic GX8« » 5.2 in 3.1 in 2.5 in 17.2 oz 330 Y Jul 2015 1,199- i Panasonic GX8
Panasonic GH4« » 5.2 in 3.7 in 3.3 in 19.8 oz 500 Y Feb 2014 1,499- i Panasonic GH4
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

Any camera purchase will naturally be influenced heavily by the price. 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 E-M5 II was launched at a markedly lower price (by 35 percent) than the G9, 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: Olympus E-M5 II vs Panasonic G9

The size of the sensor inside a digital camera is one of the key determinants of image quality. A large sensor will generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have 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 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.

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors.

Olympus E-M5 II and Panasonic G9 sensor measures

While the two cameras under review share the same sensor size, the G9 offers a higher resolution of 20.2 megapixel, compared with 15.9 MP of the E-M5 II. This megapixel advantage translates into a 13 percent gain in linear resolution. On the other hand, these sensor specs imply that the G9 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-M5 II). However, it should be noted that the G9 is much more recent (by 2 years and 9 months) than the E-M5 II, 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 G9 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

Both cameras have the capacity to capture high quality composite images by combining multiple shots after shifting the sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).

E-M5 II versus G9 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 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
Olympus E-M5 II» Four Thirds 15.9 4608 34561080/60p23.012.584273Olympus E-M5 II
Panasonic G9« Four Thirds 20.2 5184 38884K/60p----Panasonic G9
Fujifilm X-H1« » APS-C 24.0 6000 40004K/30p----Fujifilm X-H1
Nikon Z6« » Full Frame 24.3 6048 40244K/30p----Nikon Z6
Olympus E-M1 II« » Four Thirds 20.2 5184 38884K/30p23.712.8131280Olympus E-M1 II
Olympus PEN-F« » Four Thirds 20.2 5184 38881080/60p23.112.489474Olympus PEN-F
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-P5« » Four Thirds 15.9 4608 34561080/30p22.812.489572Olympus E-P5
Olympus E-M5« » Four Thirds 15.9 4608 34561080/60i22.812.382671Olympus E-M5
Panasonic GH5« » Four Thirds 20.2 5184 38884K/60p23.913.080777Panasonic GH5
Panasonic G80« » Four Thirds 15.8 4592 34484K/30p22.812.565671Panasonic G80
Panasonic GX8« » Four Thirds 20.2 5184 38884K/30p23.512.680675Panasonic GX8
Panasonic GH4« » Four Thirds 15.9 4608 34564K/30p23.212.879174Panasonic GH4
Sony A7 III« » Full Frame 24.0 6000 40004K/30p25.014.7373096Sony A7 III

Many modern cameras are not only capable of taking still images, but also of capturing video footage. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the G9 provides a better video resolution than the E-M5 II. It can shoot movie footage at 4K/60p, while the Olympus is limited to 1080/60p.

 

Feature comparison: Olympus E-M5 II vs Panasonic G9

Apart from body and sensor, cameras can and do differ across a range of features. The two cameras under review are similar with respect to both having an electronic viewfinder. However, the one in the G9 offers a substantially higher resolution than the one in the E-M5 II (3680k vs 2360k dots). The adjacent table lists some of the other core features of the Olympus E-M5 II and Panasonic G9 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
Olympus E-M5 II»2360 n 3.0 1037 swivel Y 8000 10.0 n Y Olympus E-M5 II
Panasonic G9«3680 Y 3.0 1040 swivel Y 8000 20.0 n Y Panasonic G9
Fujifilm X-H1« »3690 Y 3.0 1040 full-flex Y 8000 14.0 n Y Fujifilm X-H1
Nikon Z6« »3690 Y 3.2 2100 tilting Y 8000 12.0 n Y Nikon Z6
Olympus E-M1 II« »2360 n 3.0 1037 swivel Y 8000 18.0 n Y Olympus E-M1 II
Olympus PEN-F« »2360 n 3.0 1037 swivel Y 8000 10.0 n Y Olympus PEN-F
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-P5« »- n 3.0 1037 tilting Y 8000 9.0 Y Y Olympus E-P5
Olympus E-M5« »1440 n 3.0 610 tilting Y 4000 9.0 n Y Olympus E-M5
Panasonic GH5« »3680 n 3.2 1620 swivel Y 8000 12.0 n Y Panasonic GH5
Panasonic G80« »2360 n 3.0 1040 swivel Y 4000 9.0 Y Y Panasonic G80
Panasonic GX8« »2360 n 3.0 1040 swivel Y 8000 10.0 n Y Panasonic GX8
Panasonic GH4« »2359 n 3.0 1036 swivel Y 8000 12.0 Y n Panasonic GH4
Sony A7 III« »2359 n 3.0 922 tilting Y 8000 10.0 n Y Sony A7 III

One feature that is present on the G9, but is missing on the E-M5 II 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.

The reported shutter speed and shutter burst refer to the use of the mechanical shutter. In addition, both cameras feature 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 E-M5 II and the G9 write their imaging data to SDXC cards. The G9 features dual card slots, which can be very useful in case a memory card fails. In contrast, the E-M5 II only has one slot.

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
Olympus E-M5 II»YstereomonoY-micro2.0Y--Olympus E-M5 II
Panasonic G9«YstereomonoYYfull3.0Y-YPanasonic G9
Fujifilm X-H1« »YstereomonoY-micro3.0Y--Fujifilm X-H1
Nikon Z6« »YstereomonoYYmicro3.1Y-YNikon Z6
Olympus E-M1 II« »YstereomonoYYmicro3.0Y--Olympus E-M1 II
Olympus PEN-F« »Ystereomono--micro2.0Y--Olympus PEN-F
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-P5« »Ystereomono--micro2.0Y--Olympus E-P5
Olympus E-M5« »Ystereomono--mini2.0---Olympus E-M5
Panasonic GH5« »YstereomonoYYfull3.1Y-YPanasonic GH5
Panasonic G80« »YstereomonoY-micro2.0Y--Panasonic G80
Panasonic GX8« »YstereomonoY-micro2.0YY-Panasonic GX8
Panasonic GH4« »YstereomonoYYmicro2.0YY-Panasonic GH4
Sony A7 III« »YstereomonoYYmicro3.1YYYSony A7 III

Both the E-M5 II and the G9 are current models that good online retailers will have in stock. You can check the latest prices, for example, at amazon. The E-M5 II replaced the earlier Olympus E-M5, while the G9 followed on from the Panasonic G85.

Review summary: Olympus E-M5 II vs Panasonic G9

So how do things add up? Which of the two cameras – the Olympus E-M5 II or the Panasonic G9 – has the upper hand? The listing below highlights the relative strengths of the two models.

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

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • More compact: Is smaller (124x85mm vs 137x97mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 189g or 29 percent) and hence easier to carry around.
  • More affordable: Was introduced into a lower priced category (35 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in February 2015).

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Arguments in favor of the Panasonic Lumix DC-G9:

  • More detail: Has more megapixels (20.2 vs 15.9MP), which boosts linear resolution by 13%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better video: Provides higher definition movie capture (4K/60p vs 1080/60p).
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • More detailed viewfinder: Has higher resolution electronic viewfinder (3680k vs 2360k dots).
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • Faster burst: Shoots at higher frequency (20 vs 10 flaps/sec) to capture the decisive moment.
  • Longer lasting: Gets more shots (400 versus 310) out of a single battery charge.
  • Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
  • More solid recording: Has a full-sized HDMI port for a sturdy connection to an external recorder.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • More modern: Reflects 2 years and 9 months of technical progress since the E-M5 II launch.

If the count of relative strengths (bullet points above) is taken as a measure, the G9 is the clear winner of the contest (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.

E-M5 II 05:13 G9

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 II or the G9 handle or 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. This is why expert reviews are important. The adjacent table relays the overall verdicts of several of the most popular 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
Olympus E-M5 II»HiRec81/1005/54.5/55/5 Feb 2015 1,099 i i Olympus E-M5 II
Panasonic G9«HiRec85/1005/5-5/5 Nov 2017 1,699 i i Panasonic G9
Fujifilm X-H1« »Rec86/1004.5/5-4.5/5 Feb 2018 1,899 i i Fujifilm X-H1
Nikon Z6« »----- Aug 2018 1,999 i i Nikon Z6
Olympus E-M1 II« »HiRec85/1004.5/55/54.5/5 Sep 2016 1,999 i i Olympus E-M1 II
Olympus PEN-F« »-82/1004.5/54.5/55/5 Jan 2016 1,199 i i Olympus PEN-F
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-P5« »HiRec78/1004.5/54.5/55/5 May 2013 999- i Olympus E-P5
Olympus E-M5« »HiRec80/1004.5/55/55/5 Feb 2012 1,299- i Olympus E-M5
Panasonic GH5« »HiRec85/1004.5/55/55/5 Jan 2017 1,999 i i Panasonic GH5
Panasonic G80« »HiRec84/1005/54.5/54.5/5 Sep 2016 899 i i Panasonic G80
Panasonic GX8« »Rec82/1004.5/55/54.5/5 Jul 2015 1,199- i Panasonic GX8
Panasonic GH4« »HiRec85/1005/55/55/5 Feb 2014 1,499- i Panasonic GH4
Sony A7 III« »HiRec89/1005/55/55/5 Feb 2018 1,999 i i Sony A7 III

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. 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. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

 

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. If you do not see the camera that you are looking for, kindly get in touch, and I will try to update the database with the necessary infos.

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