PW

Panasonic GX1 versus Panasonic GM1

The Panasonic Lumix DMC-GX1 and the Panasonic Lumix DMC-GM1 are two digital cameras that were announced, respectively, in November 2011 and October 2013. Both the GX1 and the GM1 are mirrorless interchangeable lens cameras that are equipped with a Four Thirds sensor. Both cameras offer a resolution of 15.8 megapixel. 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: Panasonic GX1 vs Panasonic GM1

An illustration of the physical size and weight of the Panasonic GX1 and the Panasonic GM1 is provided in the side-by-side display below. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth 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 – the GX1 – represents 100 percent across all the size and weight measures).

Snapsort Panasonic GX1 vs Panasonic GM1
Compare GX1 versus GM1 top
Compare GX1 and GM1 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic GM1 is considerably smaller (31 percent) than the Panasonic GX1. Moreover, the GM1 is substantially lighter (36 percent) than the GX1. In this context, it is worth noting that neither the GX1 nor the GM1 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.

Concerning battery life, the GX1 gets 320 shots out of its DMW-BLD10 battery, while the GM1 can take 230 images on a single charge of its DMW-BLH7 power pack.

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 camera comparisons 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
Panasonic GX1» 116 mm 68 mm 39 mm 318 g 320 n Nov 2011 949- i Panasonic GX1
Panasonic GM1« 99 mm 55 mm 30 mm 204 g 230 n Oct 2013 749- i Panasonic GM1
Canon G1 X Mark II« » 116 mm 74 mm 66 mm 553 g 240 n Feb 2014 799 i i Canon G1 X Mark II
Olympus E-M10« » 119 mm 82 mm 46 mm 396 g 320 n Jan 2014 699- i Olympus E-M10
Panasonic GM5« » 99 mm 60 mm 36 mm 211 g 220 n Sep 2014 749- i Panasonic GM5
Panasonic GF6« » 111 mm 65 mm 38 mm 323 g 340 n Apr 2013 499- i Panasonic GF6
Panasonic G6« » 122 mm 85 mm 71 mm 390 g 340 n Apr 2013 599- i Panasonic G6
Panasonic GX7« » 123 mm 71 mm 55 mm 402 g 350 n Aug 2013 999- i Panasonic GX7
Panasonic GF5« » 108 mm 67 mm 37 mm 267 g 360 n Apr 2012 499- i Panasonic GF5
Panasonic GF3« » 108 mm 67 mm 32 mm 264 g 300 n Jun 2011 549- i Panasonic GF3
Panasonic G3« » 115 mm 84 mm 47 mm 336 g 270 n May 2011 599- i Panasonic G3
Panasonic GF2« » 113 mm 68 mm 33 mm 310 g 300 n Nov 2010 549- i Panasonic GF2
Panasonic GH2« » 124 mm 90 mm 76 mm 442 g 330 n Sep 2010 1,499- i Panasonic GH2
Panasonic G10« » 124 mm 84 mm 74 mm 388 g 380 n Mar 2010 499- i Panasonic G10
Ricoh GR« » 117 mm 61 mm 35 mm 245 g 290 n Apr 2013 799- i Ricoh GR

The price is, of course, an important factor in any camera decision. 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 21 percent) than the GX1, which makes it more attractive for photographers on a tight budget. 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: Panasonic GX1 vs Panasonic GM1

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. 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 more expensive and 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 GX1 and Panasonic GM1 sensor measures

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 GX1 and the GM1 have the same pixel density, as well as the same pixel size. It should, however, be noted that the GM1 is a somewhat more recent model (by 1 year and 11 months) than the GX1, and its sensor might have benefitted from technological advances during this time.

GX1 versus GM1 MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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. Of the two cameras under consideration, the GM1 offers substantially better image quality than the GX1 (overall score 11 points higher). The advantage is based on 1.5 bits higher color depth, 1.1 EV in additional dynamic range, 0.1 stops of reduced 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.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
Panasonic GX1» Four Thirds 15.8 4592 34481080/60p20.810.670355Panasonic GX1
Panasonic GM1« Four Thirds 15.8 4592 34481080/60i22.311.766066Panasonic GM1
Canon G1 X Mark II« » 1.5-inch 13.0 4160 31201080/30p21.510.858158Canon G1 X Mark II
Olympus E-M10« » Four Thirds 15.9 4608 34561080/30p22.812.388472Olympus E-M10
Panasonic GM5« » Four Thirds 15.8 4592 34481080/60p22.111.772166Panasonic GM5
Panasonic GF6« » Four Thirds 15.8 4592 34481080/60i20.710.662254Panasonic GF6
Panasonic G6« » Four Thirds 15.9 4608 34561080/60p21.311.563961Panasonic G6
Panasonic GX7« » Four Thirds 15.8 4592 34481080/60p22.612.271870Panasonic GX7
Panasonic GF5« » Four Thirds 12.0 4000 30001080/60i21.411.661861Panasonic GF5
Panasonic GF3« » Four Thirds 12.0 4000 30001080/60i20.610.045849Panasonic GF3
Panasonic G3« » Four Thirds 15.8 4592 34481080/60i21.010.666756Panasonic G3
Panasonic GF2« » Four Thirds 12.0 4000 30001080/60i21.210.350654Panasonic GF2
Panasonic GH2« » Four Thirds 15.9 4608 34561080/60i21.211.365560Panasonic GH2
Panasonic G10« » Four Thirds 12.0 4000 3000720/30p21.210.141152Panasonic G10
Ricoh GR« » APS-C 16.1 4928 32641080/30p23.613.597278Ricoh GR

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 GX1 provides a higher frame rate than the GM1. It can shoot video footage at 1080/60p, while the GM1 is limited to 1080/60i.

 

Feature comparison: Panasonic GX1 vs Panasonic GM1

Apart from body and sensor, cameras can and do differ across a range of features. The GX1 and the GM1 are similar in the sense that neither of the two has a viewfinder. The images are, thus, framed using live view on the rear LCD. The adjacent table lists some of the other core features of the Panasonic GX1 and Panasonic GM1 along with similar information for a selection of comparators. The full specs-sheets can be found in the camera manual or, for example, 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
Panasonic GX1»- n 3.0 460 fixed Y 4000 4.2 Y n Panasonic GX1
Panasonic GM1«- n 3.0 1036 fixed Y 500 5.0 Y n Panasonic GM1
Canon G1 X Mark II« »- n 3.0 1040 tilting Y 4000 5.2 Y Y Canon G1 X Mark II
Olympus E-M10« »1440 n 3.0 1037 tilting Y 4000 8.0 Y Y Olympus E-M10
Panasonic GM5« »1166 n 3.0 921 fixed Y 500 5.8 n n Panasonic GM5
Panasonic GF6« »- n 3.0 1040 tilting Y 4000 4.2 Y n Panasonic GF6
Panasonic G6« »1440 n 3.0 1036 swivel Y 4000 7.0 Y n Panasonic G6
Panasonic GX7« »2760 n 3.0 1040 tilting Y 8000 5.0 Y Y Panasonic GX7
Panasonic GF5« »- n 3.0 920 fixed Y 4000 4.0 Y n Panasonic GF5
Panasonic GF3« »- n 3.0 460 fixed Y 4000 3.2 Y n Panasonic GF3
Panasonic G3« »1440 n 3.0 460 swivel Y 4000 4.0 Y n Panasonic G3
Panasonic GF2« »- n 3.0 460 fixed Y 4000 2.6 Y n Panasonic GF2
Panasonic GH2« »1534 n 3.0 460 swivel n 4000 3.0 Y n Panasonic GH2
Panasonic G10« »202 n 3.0 460 fixed n 4000 2.6 Y n Panasonic G10
Ricoh GR« »- n 3.0 1230 fixed n 4000 4.0 Y n Ricoh GR

Both the GX1 and the GM1 have been discontinued, but can regularly be found used on eBay. The GX1 was replaced by the Panasonic GX7, while the GM1 was followed by the Panasonic GM5.

Review summary: Panasonic GX1 vs Panasonic GM1

So how do things add up? Which of the two cameras – the Panasonic GX1 or the Panasonic GM1 – has the upper hand? A synthesis of the relative strong points of each of the models is listed below.


Advantages of the Panasonic Lumix DMC-GX1:

  • Better video: Provides higher movie framerates (1080/60p versus 1080/60i).
  • Faster shutter: Has higher mechanical shutter speed (4000/sec vs 500/sec) to freeze action.
  • Longer lasting: Can take more shots (320 versus 230) on a single battery charge.
  • More heavily discounted: Has been on the market for longer (launched in November 2011).


Arguments in favor of the Panasonic Lumix DMC-GM1:

  • Better image quality: Scores substantially higher (11 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (1.5 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (1.1 EV of extra DR).
  • More detailed LCD: Has a higher resolution rear screen (1036k vs 460k dots).
  • Faster burst: Shoots at higher frequency (5 vs 4.2 flaps/sec) to capture the decisive moment.
  • More compact: Is smaller (99x55mm vs 116x68mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 114g or 36 percent) and is thus easier to take along.
  • More affordable: Was released into a lower priced segment (21 percent cheaper at launch).
  • More modern: Was introduced somewhat (1 year and 11 months) more recently.

If the count of relative strengths (bullet points above) is taken as a measure, the GM1 is the clear winner of the contest (9 : 4 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision on a new camera.

GX1 04:09 GM1

In any case, while the specs-based evaluation of cameras is instructive in revealing their potential as photographic tools, it remains incomplete and does no justice, for example, to the way the GX1 or the GM1 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). You can find the full text of the reviews 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
Panasonic GX1»Rec77/1004.5/54.5/54.5/5 Nov 2011 949- i Panasonic GX1
Panasonic GM1«Rec78/1005/54.5/54.5/5 Oct 2013 749- i Panasonic GM1
Canon G1 X Mark II« »Rec77/1004/54/54.5/5 Feb 2014 799 i i Canon G1 X Mark II
Olympus E-M10« »-80/1005/54.5/55/5 Jan 2014 699- i Olympus E-M10
Panasonic GM5« »Rec77/1005/55/54.5/5 Sep 2014 749- i Panasonic GM5
Panasonic GF6« »HiRec-4.5/5-4.5/5 Apr 2013 499- i Panasonic GF6
Panasonic G6« »HiRec-5/5-4.5/5 Apr 2013 599- i Panasonic G6
Panasonic GX7« »Rec79/1005/54.5/55/5 Aug 2013 999- i Panasonic GX7
Panasonic GF5« »--4.5/54/54.5/5 Apr 2012 499- i Panasonic GF5
Panasonic GF3« »82/10071/1004.5/54.5/54/5 Jun 2011 549- i Panasonic GF3
Panasonic G3« »HiRec75/1004.5/54.5/55/5 May 2011 599- i Panasonic G3
Panasonic GF2« »82/10070/1004.5/54.5/54.5/5 Nov 2010 549- i Panasonic GF2
Panasonic GH2« »HiRec79/1004.5/54.5/55/5 Sep 2010 1,499- i Panasonic GH2
Panasonic G10« »-70/1004/5-4/5 Mar 2010 499- i Panasonic G10
Ricoh GR« »-79/1004.5/54.5/54.5/5 Apr 2013 799- i Ricoh GR

Care should be taken when interpreting the review scores above, though. The ratings are only valid when refering 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 comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.

 

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 cannot find the camera you are interested in, kindly get in touch, and I will try to update the database with the necessary infos.

vs

    You are here  »   »