Panasonic GM1 vs GX85
The Panasonic Lumix DMC-GM1 and the Panasonic Lumix DMC-GX85 (labelled Panasonic GX80 in some countries) are two digital cameras that were announced, respectively, in October 2013 and April 2016. Both the GM1 and the GX85 are mirrorless interchangeable lens cameras that are equipped with a Four Thirds sensor. Both cameras offer a resolution of 15.8 megapixels.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
Going beyond this snapshot of core features and characteristics, what are the differences between the Panasonic Lumix DMC-GM1 and the Panasonic Lumix DMC-GX85? 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.
The physical size and weight of the Panasonic GM1 and the Panasonic GX85 are illustrated 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 width, height and depth dimensions are rounded to the nearest millimeter.
The GM1 can be obtained in three different colors (black, silver, red), while the GX85 is available in two color-versions (black, silver).
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic GX85 is considerably larger (59 percent) than the Panasonic GM1. Moreover, the GX85 is substantially heavier (109 percent) than the GM1. In this context, it is worth noting that neither the GM1 nor the GX85 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 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 GM1 gets 230 shots out of its DMW-BLH7 battery, while the GX85 can take 290 images on a single charge of its DMW-BLG10 power pack. The power pack in the GX85 can be charged via the USB port, which can be very convenient when travelling.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.
|1.||Panasonic GM1||99 mm||55 mm||30 mm||204 g||230||n||Oct 2013||749|
|2.||Panasonic GX85||122 mm||71 mm||44 mm||426 g||290||n||Apr 2016||799|
|3.||Olympus E-M10 II||120 mm||83 mm||47 mm||390 g||320||n||Aug 2015||649|
|4.||Panasonic GX9||124 mm||72 mm||47 mm||407 g||260||n||Feb 2018||849|
|5.||Panasonic G85||128 mm||89 mm||74 mm||505 g||330||Y||Sep 2016||899|
|6.||Panasonic GM5||99 mm||60 mm||36 mm||211 g||220||n||Sep 2014||749|
|7.||Panasonic LX100||115 mm||66 mm||55 mm||393 g||300||n||Sep 2014||899|
|8.||Panasonic G6||122 mm||85 mm||71 mm||390 g||340||n||Apr 2013||599|
|9.||Panasonic GX7||123 mm||71 mm||55 mm||402 g||350||n||Aug 2013||999|
|10.||Panasonic G5||120 mm||83 mm||71 mm||396 g||320||n||Jul 2012||599|
|11.||Panasonic GH3||133 mm||93 mm||82 mm||550 g||540||Y||Sep 2012||1,299|
|12.||Panasonic G3||115 mm||84 mm||47 mm||336 g||270||n||May 2011||599|
|13.||Panasonic GX1||116 mm||68 mm||39 mm||318 g||320||n||Nov 2011||699|
|14.||Panasonic GH2||124 mm||90 mm||76 mm||442 g||330||n||Sep 2010||899|
|15.||Ricoh GR||117 mm||61 mm||35 mm||245 g||290||n||Apr 2013||799|
|Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
Any camera decision will naturally be influenced heavily by the price. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The GM1 was somewhat cheaper (by 6 percent) than the GX85 at launch, but both cameras fall into the same price category. 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.
The size of the imaging sensor is a crucial determinant 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. 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 associated with larger, more expensive camera bodies 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.
The two cameras under review do not only share the same sensor size, but also offer an identical resolution of 15.8 megapixels. This similarity in sensor specs implies that both the GM1 and the GX85 have the same pixel density, as well as the same pixel size. It should, however, be noted that the GX85 is much more recent (by 2 years and 5 months) than the GM1, and its sensor will have benefitted from technological advances during this time. Coming back to sensor resolution, it should be mentioned that the GX85 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The Panasonic Lumix DMC-GM1 has a native sensitivity range from ISO 200 to ISO 25600, which can be extended to ISO 125-25600. The corresponding ISO settings for the Panasonic Lumix DMC-GX85 are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 100-25600.
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"). Of the two cameras under consideration, the GX85 has a markedly higher DXO score than the GM1 (overall score 5 points higher), which will translate into better image quality. The advantage is based on 0.6 bits higher color depth, 0.9 EV in additional dynamic range, and -0 stops in additional low light sensitivity. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|1.||Panasonic GM1||Four Thirds||15.8||4592||3448||1080/60i||22.3||11.7||660||66|
|2.||Panasonic GX85||Four Thirds||15.8||4592||3448||4K/30p||22.9||12.6||662||71|
|3.||Olympus E-M10 II||Four Thirds||15.9||4608||3456||1080/60p||23.1||12.5||842||73|
|4.||Panasonic GX9||Four Thirds||20.2||5184||3888||4K/30p||..||..||..||..|
|5.||Panasonic G85||Four Thirds||15.8||4592||3448||4K/30p||22.8||12.5||656||71|
|6.||Panasonic GM5||Four Thirds||15.8||4592||3448||1080/60p||22.1||11.7||721||66|
|7.||Panasonic LX100||Four Thirds||12.7||4112||3088||4K/30p||22.3||12.5||553||67|
|8.||Panasonic G6||Four Thirds||15.9||4608||3456||1080/60p||21.3||11.5||639||61|
|9.||Panasonic GX7||Four Thirds||15.8||4592||3448||1080/60p||22.6||12.2||718||70|
|10.||Panasonic G5||Four Thirds||15.9||4608||3456||1080/60p||..||..||..||..|
|11.||Panasonic GH3||Four Thirds||15.9||4608||3456||1080/60p||22.7||12.4||812||71|
|12.||Panasonic G3||Four Thirds||15.8||4592||3448||1080/60i||21.0||10.6||667||56|
|13.||Panasonic GX1||Four Thirds||15.8||4592||3448||1080/60p||20.8||10.6||703||55|
|14.||Panasonic GH2||Four Thirds||15.9||4608||3456||1080/60i||21.2||11.3||655||60|
Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the GX85 provides a better video resolution than the GM1. It can shoot movie footage at 4K/30p, while the GM1 is limited to 1080/60i.
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the GX85 has an electronic viewfinder (2765k dots), which can be very helpful when shooting in bright sunlight. In contrast, the GM1 relies on live view and the rear LCD for framing. The adjacent table lists some of the other core features of the Panasonic GM1 and Panasonic GX85 along with similar information for a selection of comparators.
|1.||Panasonic GM1||none||n||3.0 / 1036||fixed||Y||1/500s||5.0||Y||n|
|2.||Panasonic GX85||2765||n||3.0 / 1040||tilting||Y||1/4000s||8.0||Y||Y|
|3.||Olympus E-M10 II||2360||n||3.0 / 1040||tilting||Y||1/4000s||8.0||Y||Y|
|4.||Panasonic GX9||2760||n||3.0 / 1240||tilting||Y||1/4000s||9.0||Y||Y|
|5.||Panasonic G85||2360||n||3.0 / 1040||swivel||Y||1/4000s||9.0||Y||Y|
|6.||Panasonic GM5||1166||n||3.0 / 921||fixed||Y||1/500s||5.8||n||n|
|7.||Panasonic LX100||2764||n||3.0 / 921||fixed||n||1/4000s||11.0||n||Y|
|8.||Panasonic G6||1440||n||3.0 / 1036||swivel||Y||1/4000s||7.0||Y||n|
|9.||Panasonic GX7||2760||n||3.0 / 1040||tilting||Y||1/8000s||5.0||Y||Y|
|10.||Panasonic G5||1440||n||3.0 / 920||swivel||Y||1/4000s||6.0||Y||n|
|11.||Panasonic GH3||1746||n||3.0 / 614||swivel||Y||1/4000s||6.0||Y||n|
|12.||Panasonic G3||1440||n||3.0 / 460||swivel||Y||1/4000s||4.0||Y||n|
|13.||Panasonic GX1||optional||n||3.0 / 460||fixed||Y||1/4000s||4.2||Y||n|
|14.||Panasonic GH2||1534||n||3.0 / 460||swivel||n||1/4000s||3.0||Y||n|
|15.||Ricoh GR||optional||n||3.0 / 1230||fixed||n||1/4000s||4.0||Y||n|
One feature that differentiates the GX85 and the GM1 is in-body image stabilization (IBIS). The GX85 reduces the risk of handshake-induced blur with all attached lenses, while the GM1 offers no blur reduction with lenses that themselves do not provide optical image stabilization.
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 Panasonic GM1 and the Panasonic GX85 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 GM1 and the GX85 write their files to SDXC cards. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.
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-GM1 and Panasonic Lumix DMC-GX85 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Panasonic GM1||-||stereo / mono||-||-||micro||2.0||Y||-||-|
|2.||Panasonic GX85||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|3.||Olympus E-M10 II||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|4.||Panasonic GX9||Y||stereo / mono||-||-||micro||2.0||Y||-||Y|
|5.||Panasonic G85||Y||stereo / mono||Y||-||micro||2.0||Y||-||-|
|6.||Panasonic GM5||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|7.||Panasonic LX100||Y||stereo / mono||-||-||micro||2.0||Y||Y||-|
|8.||Panasonic G6||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|9.||Panasonic GX7||Y||stereo / mono||-||-||mini||2.0||Y||Y||-|
|10.||Panasonic G5||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|11.||Panasonic GH3||Y||stereo / mono||Y||Y||mini||2.0||Y||-||-|
|12.||Panasonic G3||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|13.||Panasonic GX1||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|14.||Panasonic GH2||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|15.||Ricoh GR||Y||mono / mono||-||-||micro||2.0||-||-||-|
It is notable that the GX85 has a hotshoe, which makes it possible to easily attach optional accessories, such as an external flash gun. The GM1 does not feature such an accessory-socket.
The GX85 is a recent model that features in the current product line-up of Panasonic. In contrast, the GM1 has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the GM1 was succeeded by the Panasonic GM5. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Panasonic website.
So what conclusions can be drawn? Is the Panasonic GM1 better than the Panasonic GX85 or vice versa? The listing below highlights the relative strengths of the two models.
Advantages of the Panasonic Lumix DMC-GM1:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- More compact: Is smaller (99x55mm vs 122x71mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 222g or 52 percent) and hence easier to carry around.
- More heavily discounted: Has been available for much longer (launched in October 2013).
Arguments in favor of the Panasonic Lumix DMC-GX85:
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Better image quality: Scores markedly higher (5 points) in the DXO overall evaluation.
- More dynamic range: Captures a broader range of light and dark details (0.9 EV of extra DR).
- Better video: Provides higher definition movie capture (4K/30p vs 1080/60i).
- Easier framing: Has an electronic viewfinder for image composition and settings control.
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/500s) to freeze action.
- Faster burst: Shoots at higher frequency (8 vs 5 flaps/sec) to capture the decisive moment.
- Longer lasting: Gets more shots (290 versus 230) out of a single battery charge.
- Easier travel charging: Can be conveniently charged via its USB port.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
- More modern: Reflects 2 years and 5 months of technical progress since the GM1 launch.
If the number of relative strengths (bullet points above) is taken as a guide, the GX85 is the clear winner of the contest (13 : 4 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. 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.
How about other alternatives? Do the specifications of the Panasonic GM1 and the Panasonic GX85 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 GM1 or the GX85 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 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.
|1.||Panasonic GM1||3/5||+||..||78/100||5/5||4.5/5||Oct 2013||749|
|2.||Panasonic GX85||4.5/5||+ +||..||82/100||5/5||5/5||Apr 2016||799|
|3.||Olympus E-M10 II||4.5/5||+ +||..||80/100||5/5||5/5||Aug 2015||649|
|4.||Panasonic GX9||4/5||+||4/5||84/100||4.5/5||4.5/5||Feb 2018||849|
|5.||Panasonic G85||..||+ +||..||84/100||5/5||4.5/5||Sep 2016||899|
|6.||Panasonic GM5||3.5/5||+||..||77/100||5/5||4.5/5||Sep 2014||749|
|7.||Panasonic LX100||5/5||+ +||..||85/100||5/5||5/5||Sep 2014||899|
|8.||Panasonic G6||4/5||+ +||..||..||5/5||4.5/5||Apr 2013||599|
|9.||Panasonic GX7||4/5||+||..||79/100||5/5||5/5||Aug 2013||999|
|10.||Panasonic G5||3/5||+ +||..||..||4.5/5||4.5/5||Jul 2012||599|
|11.||Panasonic GH3||5/5||+ +||..||79/100||4.5/5||4.5/5||Sep 2012||1,299|
|12.||Panasonic G3||3/5||+ +||..||75/100||4.5/5||5/5||May 2011||599|
|13.||Panasonic GX1||3/5||+||..||77/100||4.5/5||4.5/5||Nov 2011||699|
|14.||Panasonic GH2||5/5||+ +||..||79/100||4.5/5||5/5||Sep 2010||899|
|15.||Ricoh GR||5/5||..||..||79/100||4.5/5||4.5/5||Apr 2013||799|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The review scores listed above should be treated with care, 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 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? 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.
- Canon S120 vs Panasonic GX85
- Canon T5i vs Panasonic GM1
- Fujifilm X-A7 vs Panasonic GX85
- Nikon A1000 vs Panasonic GM1
- Nikon D50 vs Panasonic GX85
- Nikon P900 vs Panasonic GM1
- Olympus E-PL1 vs Panasonic GM1
- Panasonic GM1 vs Panasonic LF1
- Panasonic GM1 vs Pentax MX-1
- Panasonic GX85 vs Panasonic L1
- Panasonic GX85 vs Panasonic TZ90
- Panasonic GX85 vs Sony NEX-7
Specifications: Panasonic GM1 vs Panasonic GX85
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 Model||Panasonic GM1||Panasonic GX85|
|Camera Type||Mirrorless system camera||Mirrorless system camera|
|Camera Lens||Micro Four Thirds lenses||Micro Four Thirds lenses|
|Launch Date||October 2013||April 2016|
|Launch Price||USD 749||USD 799|
|Sensor Specs||Panasonic GM1||Panasonic GX85|
|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|
|Sensor Resolution||15.8 Megapixels||15.8 Megapixels|
|Image Resolution||4592 x 3448 pixels||4592 x 3448 pixels|
|Pixel Pitch||3.77 μm||3.77 μm|
|Pixel Density||7.04 MP/cm2||7.04 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||1080/60i Video||4K/30p Video|
|ISO Setting||200 - 25,600 ISO||200 - 25,600 ISO|
|ISO Boost||125 - 25,600 ISO||100 - 25,600 ISO|
|Image Processor||Venus IX||Venus|
|DXO Sensor Quality (score)||66||71|
|DXO Color Depth (bits)||22.3||22.9|
|DXO Dynamic Range (EV)||11.7||12.6|
|DXO Low Light (ISO)||660||662|
|Screen Specs||Panasonic GM1||Panasonic GX85|
|Viewfinder Type||no viewfinder||Electronic viewfinder|
|Viewfinder Field of View||100%|
|Viewfinder Resolution||2765k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||1036k dots||1040k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Shooting Specs||Panasonic GM1||Panasonic GX85|
|Focus System||Contrast-detect AF||Contrast-detect AF|
|Manual Focusing Aid||Focus Peaking||Focus Peaking|
|Max Shutter Speed (mechanical)||1/500s||1/4000s|
|Continuous Shooting||5 shutter flaps/s||8 shutter flaps/s|
|Electronic Shutter||up to 1/16000s||up to 1/16000s|
|Time-Lapse Photography||Intervalometer built-in||Intervalometer built-in|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||SDXC cards||SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||UHS-I||UHS-I|
|Connectivity Specs||Panasonic GM1||Panasonic GX85|
|External Flash||no Hotshoe||Hotshoe|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||micro HDMI||micro HDMI|
|Wifi Support||Wifi built-in||Wifi built-in|
|Body Specs||Panasonic GM1||Panasonic GX85|
|Battery Life (CIPA)||230 shots per charge||290 shots per charge|
|In-Camera Charging||no USB charging||USB charging|
99 x 55 x 30 mm
(3.9 x 2.2 x 1.2 in)
122 x 71 x 44 mm
(4.8 x 2.8 x 1.7 in)
|Camera Weight||204 g (7.2 oz)||426 g (15.0 oz)|
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