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Panasonic G5 versus Panasonic GM1

The Panasonic Lumix DMC-G5 and the Panasonic Lumix DMC-GM1 are two digital cameras that were officially introduced, respectively, in July 2012 and October 2013. Both the G5 and the GM1 are mirrorless interchangeable lens cameras that are equipped with a Four Thirds sensor. The G5 has a resolution of 15.9 megapixel, whereas the GM1 provides 15.8 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: Panasonic G5 vs Panasonic GM1

An illustration of the physical size and weight of the Panasonic G5 and the Panasonic GM1 is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth measures are rounded to the nearest millimeter. You can also use the toggle button 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 G5 – represents the basis or 100 percent across all the size and weight measures).

Compare Panasonic G5 vs Panasonic GM1
Compare G5 versus GM1 top
Compare G5 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 (45 percent) than the Panasonic G5. Moreover, the GM1 is substantially lighter (48 percent) than the G5. In this context, it is worth noting that neither the G5 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 G5 gets 320 shots out of its DMW-BLC12 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. In case you want to display and compare another camera duo, just click on the right or left arrow next to the camera that you would like to inspect. Alternatively, you can also use the CAM-parator to select your camera combination among a larger number of options.

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 G5» 4.7 in 3.3 in 2.8 in 14.0 oz 320 n Jul 2012 599- i Panasonic G5
Panasonic GM1« 3.9 in 2.2 in 1.2 in 7.2 oz 230 n Oct 2013 749- i Panasonic GM1
Olympus E-PL6« » 4.4 in 2.5 in 1.5 in 11.5 oz 360 n May 2013 599- i Olympus E-PL6
Olympus E-PL5« » 4.4 in 2.5 in 1.5 in 11.5 oz 360 n Sep 2012 599- i Olympus E-PL5
Panasonic G7« » 4.9 in 3.4 in 3.0 in 14.5 oz 350 n May 2015 649- i Panasonic G7
Panasonic GM5« » 3.9 in 2.4 in 1.4 in 7.4 oz 220 n Sep 2014 749- i Panasonic GM5
Panasonic LX100« » 4.5 in 2.6 in 2.2 in 13.9 oz 300 n Sep 2014 899 i i Panasonic LX100
Panasonic G6« » 4.8 in 3.3 in 2.8 in 13.8 oz 340 n Apr 2013 599- i Panasonic G6
Panasonic GF6« » 4.4 in 2.6 in 1.5 in 11.4 oz 340 n Apr 2013 499- i Panasonic GF6
Panasonic GX7« » 4.8 in 2.8 in 2.2 in 14.2 oz 350 n Aug 2013 999- i Panasonic GX7
Panasonic GF5« » 4.3 in 2.6 in 1.5 in 9.4 oz 360 n Apr 2012 499- i Panasonic GF5
Panasonic GH3« » 5.2 in 3.7 in 3.2 in 19.4 oz 540 Y Sep 2012 1,299- i Panasonic GH3
Panasonic G3« » 4.5 in 3.3 in 1.9 in 11.9 oz 270 n May 2011 599- i Panasonic G3
Panasonic GF3« » 4.3 in 2.6 in 1.3 in 9.3 oz 300 n Jun 2011 549- i Panasonic GF3
Panasonic GX1« » 4.6 in 2.7 in 1.5 in 11.2 oz 320 n Nov 2011 949- i Panasonic GX1
Panasonic G10« » 4.9 in 3.3 in 2.9 in 13.7 oz 380 n Mar 2010 499- i Panasonic G10

The camera’s price is obviously a critical decision-making factor. 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 G5 was launched at a somewhat lower price (by 20 percent) than the GM1, 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.

 

Sensor comparison: Panasonic G5 vs Panasonic GM1

The size of the imaging sensor is a crucial determinant of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and 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 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 G5 and Panasonic GM1 sensor measures

While the two cameras under review share the same sensor size, the G5 offers a slightly higher resolution of 15.9 megapixel, compared with 15.8 MP of the GM1. This megapixel advantage translates into a 0.3 percent gain in linear resolution. On the other hand, these sensor specs imply that the G5 has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.76μm versus 3.77μm for the GM1). Moreover, it should be noted that the GM1 is a somewhat more recent model (by 1 year and 2 months) than the G5, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of individual pixels.

G5 versus GM1 MP

For many cameras, data on sensor performance has been reported by DXO Mark. 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 table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar 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 G5» Four Thirds 15.9 4608 34561080/60p----Panasonic G5
Panasonic GM1« Four Thirds 15.8 4592 34481080/60i22.311.766066Panasonic GM1
Olympus E-PL6« » Four Thirds 15.9 4608 34561080/30p----Olympus E-PL6
Olympus E-PL5« » Four Thirds 15.9 4608 34561080/30p22.812.388972Olympus E-PL5
Panasonic G7« » Four Thirds 15.8 4592 34484K/30p----Panasonic G7
Panasonic GM5« » Four Thirds 15.8 4592 34481080/60p22.111.772166Panasonic GM5
Panasonic LX100« » Four Thirds 12.7 4112 30884K/30p22.312.555367Panasonic LX100
Panasonic G6« » Four Thirds 15.9 4608 34561080/60p21.311.563961Panasonic G6
Panasonic GF6« » Four Thirds 15.8 4592 34481080/60i20.710.662254Panasonic GF6
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 GH3« » Four Thirds 15.9 4608 34561080/60p22.712.481271Panasonic GH3
Panasonic G3« » Four Thirds 15.8 4592 34481080/60i21.010.666756Panasonic G3
Panasonic GF3« » Four Thirds 12.0 4000 30001080/60i20.610.045849Panasonic GF3
Panasonic GX1« » Four Thirds 15.8 4592 34481080/60p20.810.670355Panasonic GX1
Panasonic G10« » Four Thirds 12.0 4000 3000720/30p21.210.141152Panasonic G10

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 G5 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 G5 vs Panasonic GM1

Beyond body and sensor, cameras can and do differ across a range of features. For example, the G5 has an electronic viewfinder (1440k 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 table below summarizes some of the other core capabilities of the Panasonic G5 and Panasonic GM1 in connection with corresponding information for a sample of similar cameras. If needed, the dpreview camera hub, for example, contains further detail on the cameras' specs.

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 G5»1440 n 3.0 920 swivel Y 4000 6.0 Y n Panasonic G5
Panasonic GM1«- n 3.0 1036 fixed Y 500 5.0 Y n Panasonic GM1
Olympus E-PL6« »- n 3.0 460 tilting Y 4000 8.0 n Y Olympus E-PL6
Olympus E-PL5« »- n 3.0 460 tilting Y 4000 8.0 n Y Olympus E-PL5
Panasonic G7« »2360 n 3.0 1040 swivel Y 4000 7.0 Y n Panasonic G7
Panasonic GM5« »1166 n 3.0 921 fixed Y 500 5.8 n n Panasonic GM5
Panasonic LX100« »2764 n 3.0 921 fixed n 4000 11.0 n Y Panasonic LX100
Panasonic G6« »1440 n 3.0 1036 swivel Y 4000 7.0 Y n Panasonic G6
Panasonic GF6« »- n 3.0 1040 tilting Y 4000 4.2 Y n Panasonic GF6
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 GH3« »1746 n 3.0 614 swivel Y 4000 6.0 Y n Panasonic GH3
Panasonic G3« »1440 n 3.0 460 swivel Y 4000 4.0 Y n Panasonic G3
Panasonic GF3« »- n 3.0 460 fixed Y 4000 3.2 Y n Panasonic GF3
Panasonic GX1« »- n 3.0 460 fixed Y 4000 4.2 Y n Panasonic GX1
Panasonic G10« »202 n 3.0 460 fixed n 4000 2.6 Y n Panasonic G10

The reported shutter speed and shutter burst refer to the use of the mechanical shutter. In addition, the GM1 features 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 G5 and the GM1 write their imaging data to SDXC cards.

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
Panasonic G5»Ystereomono--mini2.0---Panasonic G5
Panasonic GM1«-stereomono--micro2.0Y--Panasonic GM1
Olympus E-PL6« »Ystereomono--mini2.0---Olympus E-PL6
Olympus E-PL5« »Ystereomono--mini2.0---Olympus E-PL5
Panasonic G7« »YstereomonoY-micro2.0Y--Panasonic G7
Panasonic GM5« »Ystereomono--micro2.0Y--Panasonic GM5
Panasonic LX100« »Ystereomono--micro2.0YY-Panasonic LX100
Panasonic G6« »YstereomonoY-mini2.0YY-Panasonic G6
Panasonic GF6« »-stereomono--mini2.0YY-Panasonic GF6
Panasonic GX7« »Ystereomono--mini2.0YY-Panasonic GX7
Panasonic GF5« »-stereomono--mini2.0---Panasonic GF5
Panasonic GH3« »YstereomonoYYmini2.0Y--Panasonic GH3
Panasonic G3« »Ystereomono--mini2.0---Panasonic G3
Panasonic GF3« »-stereomono--mini2.0---Panasonic GF3
Panasonic GX1« »Ystereomono--mini2.0---Panasonic GX1
Panasonic G10« »Ymono---mini2.0---Panasonic G10

Both the G5 and the GM1 have been discontinued, but can regularly be found used on eBay. The G5 was replaced by the Panasonic G6, while the GM1 was followed by the Panasonic GM5.

Review summary: Panasonic G5 vs Panasonic GM1

So what is the bottom line? Which of the two cameras – the Panasonic G5 or the Panasonic GM1 – has the upper hand? The listing below highlights the relative strengths of the two models.


Reasons to prefer the Panasonic Lumix DMC-G5:

  • Better video: Provides higher movie framerates (1080/60p versus 1080/60i).
  • Easier framing: Has an electronic viewfinder for image framing and settings control.
  • More flexible LCD: Has swivel screen for odd-angle shots in portrait or landscape orientation.
  • Faster shutter: Has higher mechanical shutter speed (4000/sec vs 500/sec) to freeze action.
  • Faster burst: Shoots at higher frequency (6 vs 5 flaps/sec) to capture the decisive moment.
  • Longer lasting: Can take more shots (320 versus 230) on a single battery charge.
  • Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
  • More affordable: Was introduced into a lower priced segment (20 percent cheaper at launch).
  • More heavily discounted: Has been on the market for longer (launched in July 2012).


Advantages of the Panasonic Lumix DMC-GM1:

  • More detailed LCD: Has a higher resolution rear screen (1036k vs 920k dots).
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • More compact: Is smaller (99x55mm vs 120x83mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 192g or 48 percent) and is thus easier to take along.
  • Easier file upload: Has wifi build in for automatic backup or image transfer to the web.
  • More modern: Was introduced somewhat (1 year and 2 months) more recently.

If the number of relative strengths (bullet points above) is taken as a guide, the G5 emerges as the winner of the contest (9 : 6 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.

G5 09:06 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 G5 or the GM1 handle or perform in practice. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased. This is why expert reviews are important. The following table reports the overall rankings of the cameras as published by some of the major camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). The detailed reviews can be accessed 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 G5»HiRec-4.5/54.5/54.5/5 Jul 2012 599- i Panasonic G5
Panasonic GM1«Rec78/1005/54.5/54.5/5 Oct 2013 749- i Panasonic GM1
Olympus E-PL6« »----- May 2013 599- i Olympus E-PL6
Olympus E-PL5« »HiRec-4.5/54.5/54.5/5 Sep 2012 599- i Olympus E-PL5
Panasonic G7« »HiRec80/1005/54.5/54.5/5 May 2015 649- i Panasonic G7
Panasonic GM5« »Rec77/1005/55/54.5/5 Sep 2014 749- i Panasonic GM5
Panasonic LX100« »HiRec85/1005/54/55/5 Sep 2014 899 i i Panasonic LX100
Panasonic G6« »HiRec-5/5-4.5/5 Apr 2013 599- i Panasonic G6
Panasonic GF6« »HiRec-4.5/5-4.5/5 Apr 2013 499- i Panasonic GF6
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 GH3« »HiRec79/1004.5/55/54.5/5 Sep 2012 1,299- i Panasonic GH3
Panasonic G3« »HiRec75/1004.5/54.5/55/5 May 2011 599- i Panasonic G3
Panasonic GF3« »82/10071/1004.5/54.5/54/5 Jun 2011 549- i Panasonic GF3
Panasonic GX1« »Rec77/1004.5/54.5/54.5/5 Nov 2011 949- i Panasonic GX1
Panasonic G10« »-70/1004/5-4/5 Mar 2010 499- i Panasonic G10

The review scores listed above should be treated 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? In case you would like to check on the differences and similarities of other camera models, just make your choice using the following search menu. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored. If the camera you are interested in is not available, kindly get in touch, and I will try to update the database with the necessary infos.

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