Panasonic GM1 vs GX7
The Panasonic Lumix DMC-GM1 and the Panasonic Lumix DMC-GX7 are two digital cameras that were announced, respectively, in October 2013 and August 2013. Both the GM1 and the GX7 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-GX7? 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 GX7 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 GX7 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 GX7 is considerably larger (60 percent) than the Panasonic GM1. Moreover, the GX7 is substantially heavier (97 percent) than the GM1. In this context, it is worth noting that neither the GM1 nor the GX7 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.
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||ebay.com|
|2.||Panasonic GX7||123 mm||71 mm||55 mm||402 g||350||n||Aug 2013||999||ebay.com|
|3.||Olympus E-PL7||115 mm||67 mm||38 mm||357 g||350||n||Aug 2014||599||ebay.com|
|4.||Olympus E-P5||122 mm||69 mm||37 mm||420 g||330||n||May 2013||999||ebay.com|
|5.||Panasonic GX85||122 mm||71 mm||44 mm||426 g||290||n||Apr 2016||799||amazon.com|
|6.||Panasonic GM5||99 mm||60 mm||36 mm||211 g||220||n||Sep 2014||749||ebay.com|
|7.||Panasonic LX100||115 mm||66 mm||55 mm||393 g||300||n||Sep 2014||899||ebay.com|
|8.||Panasonic G6||122 mm||85 mm||71 mm||390 g||340||n||Apr 2013||599||ebay.com|
|9.||Panasonic G5||120 mm||83 mm||71 mm||396 g||320||n||Jul 2012||599||ebay.com|
|10.||Panasonic GH3||133 mm||93 mm||82 mm||550 g||540||Y||Sep 2012||1,299||ebay.com|
|11.||Panasonic G3||115 mm||84 mm||47 mm||336 g||270||n||May 2011||599||ebay.com|
|12.||Panasonic GX1||116 mm||68 mm||39 mm||318 g||320||n||Nov 2011||699||ebay.com|
|13.||Panasonic GH2||124 mm||90 mm||76 mm||442 g||330||n||Sep 2010||899||ebay.com|
|14.||Ricoh GR||117 mm||61 mm||35 mm||245 g||290||n||Apr 2013||799||ebay.com|
|Note: 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 launched at a somewhat lower price (by 25 percent) than the GX7, which makes it more attractive for photographers on a tight budget. 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 GX7 have the same pixel density, as well as the same pixel size. Moreover, the two cameras were released in close succession, so that their sensors are from the same technological generation.
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-GX7 are ISO 125 to ISO 25600 (no boost).
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.
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 GX7 has a markedly higher DXO score than the GM1 (overall score 4 points higher), which will translate into better image quality. The advantage is based on 0.3 bits higher color depth, 0.5 EV in additional dynamic range, and 0.1 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 GX7||Four Thirds||15.8||4592||3448||1080/60p||22.6||12.2||718||70|
|3.||Olympus E-PL7||Four Thirds||15.9||4608||3456||1080/30p||22.7||12.4||873||72|
|4.||Olympus E-P5||Four Thirds||15.9||4608||3456||1080/30p||22.8||12.4||895||72|
|5.||Panasonic GX85||Four Thirds||15.8||4592||3448||4K/30p||22.9||12.6||662||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 G5||Four Thirds||15.9||4608||3456||1080/60p||21.4||11.6||618||61|
|10.||Panasonic GH3||Four Thirds||15.9||4608||3456||1080/60p||22.7||12.4||812||71|
|11.||Panasonic G3||Four Thirds||15.8||4592||3448||1080/60i||21.0||10.6||667||56|
|12.||Panasonic GX1||Four Thirds||15.8||4592||3448||1080/60p||20.8||10.6||703||55|
|13.||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 GX7 provides a faster frame rate than the GM1. It can shoot movie footage at 1080/60p, 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 GX7 has an electronic viewfinder (2760k 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 GX7 along with similar information for a selection of comparators.
|1.||Panasonic GM1||none||n||3.0 / 1036||fixed||Y||1/500s||5.0/s||Y||n|
|2.||Panasonic GX7||2760||n||3.0 / 1040||tilting||Y||1/8000s||5.0/s||Y||Y|
|3.||Olympus E-PL7||optional||n||3.0 / 1037||tilting||Y||1/4000s||8.0/s||n||Y|
|4.||Olympus E-P5||optional||n||3.0 / 1037||tilting||Y||1/8000s||9.0/s||Y||Y|
|5.||Panasonic GX85||2765||n||3.0 / 1040||tilting||Y||1/4000s||8.0/s||Y||Y|
|6.||Panasonic GM5||1166||n||3.0 / 921||fixed||Y||1/500s||5.8/s||n||n|
|7.||Panasonic LX100||2764||n||3.0 / 921||fixed||n||1/4000s||11.0/s||n||Y|
|8.||Panasonic G6||1440||n||3.0 / 1036||swivel||Y||1/4000s||7.0/s||Y||n|
|9.||Panasonic G5||1440||n||3.0 / 920||swivel||Y||1/4000s||6.0/s||Y||n|
|10.||Panasonic GH3||1746||n||3.0 / 614||swivel||Y||1/4000s||6.0/s||Y||n|
|11.||Panasonic G3||1440||n||3.0 / 460||swivel||Y||1/4000s||4.0/s||Y||n|
|12.||Panasonic GX1||optional||n||3.0 / 460||fixed||Y||1/4000s||4.2/s||Y||n|
|13.||Panasonic GH2||1534||n||3.0 / 460||swivel||n||1/4000s||3.0/s||Y||n|
|14.||Ricoh GR||optional||n||3.0 / 1230||fixed||n||1/4000s||4.0/s||Y||n|
|Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.|
One feature that differentiates the GX7 and the GM1 is in-body image stabilization (IBIS). The GX7 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 GX7 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 GX7 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-GX7 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 GX7||Y||stereo / mono||-||-||mini||2.0||Y||Y||-|
|3.||Olympus E-PL7||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|4.||Olympus E-P5||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|5.||Panasonic GX85||Y||stereo / mono||-||-||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 G5||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|10.||Panasonic GH3||Y||stereo / mono||Y||Y||mini||2.0||Y||-||-|
|11.||Panasonic G3||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|12.||Panasonic GX1||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|13.||Panasonic GH2||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|14.||Ricoh GR||Y||mono / mono||-||-||micro||2.0||-||-||-|
It is notable that the GX7 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.
Both the GM1 and the GX7 have been discontinued, but can regularly be found used on ebay. The GX7 was replaced by the Panasonic GX85, while the GM1 was followed by the Panasonic GM5. Further information on the features and operation of the GM1 and GX7 can be found, respectively, in the Panasonic GM1 Manual (free pdf) or the online Panasonic GX7 Manual.
So what conclusions can be drawn? Is the Panasonic GM1 better than the Panasonic GX7 or vice versa? The listing below highlights the relative strengths of the two models.
Advantages of the Panasonic Lumix DMC-GM1:
- More compact: Is smaller (99x55mm vs 123x71mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 198g or 49 percent) and hence easier to carry around.
- More affordable: Was introduced into a lower priced segment (25 percent cheaper at launch).
Arguments in favor of the Panasonic Lumix DMC-GX7:
- Better image quality: Scores markedly higher (4 points) in the DXO overall evaluation.
- Better video: Provides higher movie framerates (1080/60p versus 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 (1/8000s vs 1/500s) to freeze action.
- Longer lasting: Gets more shots (350 versus 230) out of a single battery charge.
- 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.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
If the number of relative strengths (bullet points above) is taken as a guide, the GX7 is the clear winner of the contest (9 : 3 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 GX7 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 GX7 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||ebay.com|
|2.||Panasonic GX7||4/5||+||..||79/100||5/5||5/5||Aug 2013||999||ebay.com|
|3.||Olympus E-PL7||4/5||+||..||..||5/5||4/5||Aug 2014||599||ebay.com|
|4.||Olympus E-P5||5/5||+ +||..||78/100||4.5/5||5/5||May 2013||999||ebay.com|
|5.||Panasonic GX85||4.5/5||+ +||..||82/100||5/5||5/5||Apr 2016||799||amazon.com|
|6.||Panasonic GM5||3.5/5||+||..||77/100||5/5||4.5/5||Sep 2014||749||ebay.com|
|7.||Panasonic LX100||5/5||+ +||..||85/100||5/5||5/5||Sep 2014||899||ebay.com|
|8.||Panasonic G6||4/5||+ +||..||..||5/5||4.5/5||Apr 2013||599||ebay.com|
|9.||Panasonic G5||3/5||+ +||..||..||4.5/5||4.5/5||Jul 2012||599||ebay.com|
|10.||Panasonic GH3||5/5||+ +||..||79/100||4.5/5||4.5/5||Sep 2012||1,299||ebay.com|
|11.||Panasonic G3||3/5||+ +||..||75/100||4.5/5||5/5||May 2011||599||ebay.com|
|12.||Panasonic GX1||3/5||+||..||77/100||4.5/5||4.5/5||Nov 2011||699||ebay.com|
|13.||Panasonic GH2||5/5||+ +||..||79/100||4.5/5||5/5||Sep 2010||899||ebay.com|
|14.||Ricoh GR||5/5||..||..||79/100||4.5/5||4.5/5||Apr 2013||799||ebay.com|
|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 RP vs Panasonic GX7
- Leica SL vs Panasonic GX7
- Nikon Z8 vs Panasonic GM1
- Olympus E-PL10 vs Panasonic GX7
- Olympus E-PL5 vs Panasonic GX7
- Panasonic FZ1000 vs Panasonic GM1
- Panasonic GM1 vs Panasonic LX10
- Panasonic GM1 vs Ricoh GR
- Panasonic GM1 vs Sony A7S II
- Panasonic GM1 vs Sony NEX-5R
- Panasonic GX7 vs Panasonic ZS200
- Panasonic GX7 vs Sony A7 III
Specifications: Panasonic GM1 vs Panasonic GX7
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 GX7|
|Camera Type||Mirrorless system camera||Mirrorless system camera|
|Camera Lens||Micro Four Thirds lenses||Micro Four Thirds lenses|
|Launch Date||October 2013||August 2013|
|Launch Price||USD 749||USD 999|
|Sensor Specs||Panasonic GM1||Panasonic GX7|
|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||Anti-Alias filter|
|Movie Capability||1080/60i Video||1080/60p Video|
|ISO Setting||200 - 25,600 ISO||125 - 25,600 ISO|
|ISO Boost||125 - 25,600 ISO||no Enhancement|
|Image Processor||Venus IX||Venus|
|DXO Sensor Quality (score)||66||70|
|DXO Color Depth (bits)||22.3||22.6|
|DXO Dynamic Range (EV)||11.7||12.2|
|DXO Low Light (ISO)||660||718|
|Screen Specs||Panasonic GM1||Panasonic GX7|
|Viewfinder Type||no viewfinder||Electronic viewfinder|
|Viewfinder Field of View||100%|
|Viewfinder Resolution||2760k 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 GX7|
|Focus System||Contrast-detect AF||Contrast-detect AF|
|Manual Focusing Aid||Focus Peaking||Focus Peaking|
|Max Shutter Speed (mechanical)||1/500s||1/8000s|
|Continuous Shooting||5 shutter flaps/s||5 shutter flaps/s|
|Electronic Shutter||up to 1/16000s||up to 1/8000s|
|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|
|Single or Dual Card Slots||Single card slot||Single card slot|
|UHS card support||UHS-I||UHS-I|
|Connectivity Specs||Panasonic GM1||Panasonic GX7|
|External Flash||no Hotshoe||Hotshoe|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||micro HDMI||mini HDMI|
|Wifi Support||Wifi built-in||Wifi built-in|
|Near-Field Communication||no NFC||NFC built-in|
|Body Specs||Panasonic GM1||Panasonic GX7|
|Battery Life (CIPA)||230 shots per charge||350 shots per charge|
99 x 55 x 30 mm
(3.9 x 2.2 x 1.2 in)
123 x 71 x 55 mm
(4.8 x 2.8 x 2.2 in)
|Camera Weight||204 g (7.2 oz)||402 g (14.2 oz)|
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