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Panasonic GX800 versus Panasonic GM5

The Panasonic Lumix DMC-GX800 (called Panasonic GX850 in some regions) and the Panasonic Lumix DMC-GM5 are two digital cameras that were officially introduced, respectively, in January 2017 and September 2014. Both the GX800 and the GM5 are mirrorless interchangeable lens cameras that are equipped with a Four Thirds sensor. Both cameras offer a resolution of 15.8 megapixel.

Body comparison

The physical size and weight of the Panasonic GX800 and the Panasonic GM5 are illustrated in the side-by-side display below. Three consecutive views from the front, the top, and the rear side are shown. All size dimensions are rounded to the nearest millimeter. You can also toggle the display 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 side – the GX800 – represents the basis for the calculations across all the size and weight measures).

Panasonic GX800 vs Panasonic GM5 front
GX800 versus GM5 top view
GX800 and GM5 rear side
Body view (GX800 on the left)

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic GM5 is notably smaller (15 percent) than the Panasonic GX800. Moreover, the GM5 is markedly lighter (22 percent) than the GX800. In this context, it is worth noting that neither the GX800 nor the GM5 are weather-sealed.

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.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you want to switch the focus of the display and review another camera pair, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible comparisons there.

Camera Body Specifications
Camera Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(y/n)
Camera
Launch
(year)
Launch
Price
(USD)
Street
Price
(amazon)
Used
Price
(ebay)
Panasonic GX800 (⇒ rgt) 107 mm 65 mm 33 mm 269 g 210 no 2017 549 latest check
Panasonic GM5 (⇒ lft) 99 mm 60 mm 36 mm 211 g 220 no 2014 749discont. check
Panasonic G7 (⇒ lft | rgt) 125 mm 86 mm 77 mm 410 g 350 no 2015 649discont. check
Panasonic GF7 (⇒ lft | rgt) 107 mm 65 mm 33 mm 266 g 230 no 2015 499discont. check
Panasonic GF6 (⇒ lft | rgt) 111 mm 65 mm 38 mm 323 g 340 no 2013 499discont. check
Panasonic G6 (⇒ lft | rgt) 122 mm 85 mm 71 mm 390 g 340 no 2013 599discont. check
Panasonic GM1 (⇒ lft | rgt) 99 mm 55 mm 30 mm 204 g 230 no 2013 749discont. check
Panasonic GF5 (⇒ lft | rgt) 108 mm 67 mm 37 mm 267 g 360 no 2012 499discont. check
Panasonic G5 (⇒ lft | rgt) 120 mm 83 mm 71 mm 396 g 320 no 2012 599discont. check
Panasonic GF3 (⇒ lft | rgt) 108 mm 67 mm 32 mm 264 g 300 no 2011 549discont. check
Panasonic G3 (⇒ lft | rgt) 115 mm 84 mm 47 mm 336 g 270 no 2011 599discont. check
Panasonic GX1 (⇒ lft | rgt) 116 mm 68 mm 39 mm 318 g 320 no 2011 949discont. check
Panasonic GF2 (⇒ lft | rgt) 113 mm 68 mm 33 mm 310 g 300 no 2010 549discont. check
Ricoh GR II (⇒ lft | rgt) 117 mm 63 mm 35 mm 251 g 320 no 2015 699discont. check
Ricoh GR (⇒ lft | rgt) 117 mm 61 mm 35 mm 245 g 290 no 2013 799discont. check

The listed prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The GX800 was launched at a markedly lower price (by 27 percent) than the GM5, 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

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 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. 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 tent 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.

Panasonic GX800 and Panasonic GM5 sensor measures
Sensor size

The two cameras under review do not only share the same sensor size, but also offer an identical resolution of 15.8 megapixel. This similarity in sensor specs implies that both the GX800 and the GM5 have the same pixel density, as well as the same pixel size. It should, however, be noted that the GX800 is much more recent (by 2 years and 3 months) than the GM5, and its sensor will have benefitted from technological advances during this time. Coming back to sensor resolution, it should be mentioned that the GX800 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

GX800 versus GM5 MP
Sensor resolution

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

Sensor Characteristics
Camera Sensor
Class
Resolution
(Megapixel)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Panasonic GX800 (⇒ rgt) Four Thirds 15.8 4592 3448 4K/30p 23.2 13.3 586 73
Panasonic GM5 (⇒ lft) Four Thirds 15.8 4592 3448 1080/60p 22.1 11.7 721 66
Panasonic G7 (⇒ lft | rgt) Four Thirds 15.8 4592 3448 4K/30p - - - -
Panasonic GF7 (⇒ lft | rgt) Four Thirds 15.8 4592 3448 1080/60p - - - -
Panasonic GF6 (⇒ lft | rgt) Four Thirds 15.8 4592 3448 1080/60i 20.7 10.6 622 54
Panasonic G6 (⇒ lft | rgt) Four Thirds 15.9 4608 3456 1080/60p 21.3 11.5 639 61
Panasonic GM1 (⇒ lft | rgt) Four Thirds 15.8 4592 3448 1080/60i 22.3 11.7 660 66
Panasonic GF5 (⇒ lft | rgt) Four Thirds 12.0 4000 3000 1080/60i 21.4 11.6 618 61
Panasonic G5 (⇒ lft | rgt) Four Thirds 15.9 4608 3456 1080/60p - - - -
Panasonic GF3 (⇒ lft | rgt) Four Thirds 12.0 4000 3000 1080/60i 20.6 10 458 49
Panasonic G3 (⇒ lft | rgt) Four Thirds 15.8 4592 3448 1080/60i 21 10.6 667 56
Panasonic GX1 (⇒ lft | rgt) Four Thirds 15.8 4592 3448 1080/60p 20.8 10.6 703 55
Panasonic GF2 (⇒ lft | rgt) Four Thirds 12.0 4000 3000 1080/60i 21.2 10.3 506 54
Ricoh GR II (⇒ lft | rgt) APS-C 16.1 4928 3264 1080/30p 23.6 13.7 1078 80
Ricoh GR (⇒ lft | rgt) APS-C 16.1 4928 3264 1080/30p 23.6 13.5 972 78

Many modern cameras are not only capable of taking still images, but can also record movies. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the GX800 provides a higher video resolution than the GM5. It can shoot video footage at 4K/30p, while the GM5 is limited to 1080/60p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the GM5 has an electronic viewfinder (1166k dots), which can be very helpful when shooting in bright sunlight. In contrast, the GX800 relies on live view and the rear LCD for framing. The table below summarizes some of the other core capabilities of the Panasonic GX800 and Panasonic GM5 in connection with corresponding information for a sample of similar cameras. The full specs-sheets can be found in the camera manual or, for example, in the dpreview camera hub.

Core Features
Camera Viewfinder
(Type or
'000 dots)
Control
Panel
(Y/n)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(Y/n)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec))
Build-in
Flash
(GN)
Build-in
Image
Stab
Panasonic GX800 (⇒ rgt) no no 3.0 1040 tilting YES 500 10.0 4 no
Panasonic GM5 (⇒ lft) 1166 no 3.0 921 fixed YES 500 5.8 no no
Panasonic G7 (⇒ lft | rgt) 2360 no 3.0 1040 swivel YES 4000 7.0 9.3 no
Panasonic GF7 (⇒ lft | rgt) no no 3.0 1040 tilting YES 500 5.8 4 no
Panasonic GF6 (⇒ lft | rgt) no no 3.0 1040 tilting YES 4000 4.2 6.3 no
Panasonic G6 (⇒ lft | rgt) 1440 no 3.0 1036 swivel YES 4000 7.0 10.5 no
Panasonic GM1 (⇒ lft | rgt) no no 3.0 1036 fixed YES 500 5.0 4 no
Panasonic GF5 (⇒ lft | rgt) no no 3.0 920 fixed YES 4000 4.0 6.3 no
Panasonic G5 (⇒ lft | rgt) 1440 no 3.0 920 swivel YES 4000 6.0 10.5 no
Panasonic GF3 (⇒ lft | rgt) no no 3.0 460 fixed YES 4000 3.2 6.3 no
Panasonic G3 (⇒ lft | rgt) 1440 no 3.0 460 swivel YES 4000 4.0 11 no
Panasonic GX1 (⇒ lft | rgt) no no 3.0 460 fixed YES 4000 4.2 7.6 no
Panasonic GF2 (⇒ lft | rgt) no no 3.0 460 fixed YES 4000 2.6 6.0 no
Ricoh GR II (⇒ lft | rgt) no no 3.0 1230 fixed no 4000 4.0 3 no
Ricoh GR (⇒ lft | rgt) no no 3.0 1230 fixed no 4000 4.0 5.4 no

The GX800 is a current model that online retailers, such as amazon, will have in stock. In contrast, the GM5 has been discontinued (but it can be found pre-owned on ebay). As a replacement in the same line of cameras, the GM5 was succeeded by the ...

Summary

So what is the bottom line? Is there a clear favorite between the Panasonic GX800 and the Panasonic GX800? The listing below highlights the relative strengths of the two models.


Advantages of the Panasonic Lumix DMC-GX800:

  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
  • More detailed LCD: Has a higher resolution rear screen (1040k vs 921k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Faster burst: Shoots at higher frequency (10 vs 5.8 flaps/sec) to capture the decisive moment.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More affordable: Was introduced into a lower priced category (27 percent cheaper at launch).
  • More modern: Reflects 2 years and 3 months of technical progress since the GM5 launch.

Reasons to prefer the Panasonic Lumix DMC-GM5:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Easier framing: Has an electronic viewfinder for image framing and settings control.
  • More compact: Is smaller (99x60mm vs 107x65mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 58g or 22 percent) and is thus easier to take along.
  • More heavily discounted: Has been around for much longer (launched in September 2014).

If the count of individual advantages (bullet points above) is taken as a guide, the GX800 emerges as the winner of the contest (8 : 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.

GX800 08:05 GM5

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains incomplete and does no justice, for example, to the way the GX800 or the GM5 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 hands-on reviews by experts are important. The adjacent table relays the overall verdicts of several of the most popular camera review sites. The detailed reviews can be accessed, respectively, on the websites of cameralabs.com, dpreview.com, ephotozine.com, imaging-resource.com, and photographyblog.com.

Review scores
Camera camera
labs
dp
review
ephoto
zine
imaging
resource
photography
blog
Camera
Launch
(year)
Launch
Price
(USD)
Street
Price
(amazon)
Used
Price
(ebay)
Panasonic GX800 (⇒ rgt) Rec 76/100 4.5/5 4/5 4.5/5 2017 549 latest check
Panasonic GM5 (⇒ lft) Rec 77/100 Silver 5/5 5/5 4.5/5 2014 749discont. check
Panasonic G7 (⇒ lft | rgt) HiRec 80/100 Silver 5/5 4.5/5 4.5/5 2015 649discont. check
Panasonic GF7 (⇒ lft | rgt) Rec - 4.5/5 4.5/5 4.5/5 2015 499discont. check
Panasonic GF6 (⇒ lft | rgt) HiRec - 4.5/5 - 4.5/5 2013 499discont. check
Panasonic G6 (⇒ lft | rgt) HiRec - 5/5 - 4.5/5 2013 599discont. check
Panasonic GM1 (⇒ lft | rgt) Rec 78/100 Gold 5/5 4.5/5 4.5/5 2013 749discont. check
Panasonic GF5 (⇒ lft | rgt) - - 4.5/5 4/5 4.5/5 2012 499discont. check
Panasonic G5 (⇒ lft | rgt) HiRec - 4.5/5 4.5/5 4.5/5 2012 599discont. check
Panasonic GF3 (⇒ lft | rgt) 82/100 71/100 4.5/5 4.5/5 4/5 2011 549discont. check
Panasonic G3 (⇒ lft | rgt) 88/100 HiRec 75/100 Silver 4.5/5 4.5/5 5/5 2011 599discont. check
Panasonic GX1 (⇒ lft | rgt) 85/100 Rec 77/100 Silver 4.5/5 4.5/5 4.5/5 2011 949discont. check
Panasonic GF2 (⇒ lft | rgt) 82/100 70/100 4.5/5 4.5/5 4.5/5 2010 549discont. check
Ricoh GR II (⇒ lft | rgt) - - 4.5/5 4.5/5 4.5/5 2015 699discont. check
Ricoh GR (⇒ lft | rgt) - 79/100 Gold 4.5/5 4.5/5 4.5/5 2013 799discont. check

Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparisons of ratings among very different cameras or across long time periods have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

Other comparisons

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, please contact me, and I will try to locate and add the respective data to the application.

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