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Panasonic GM1 versus Panasonic FZ1000

The Panasonic Lumix DMC-GM1 and the Panasonic Lumix DMC-FZ1000 are two digital cameras that were revealed to the public, respectively, in October 2013 and June 2014. The GM1 is a mirrorless interchangeable lens camera, while the FZ1000 is a fixed lens compact. The cameras are based on a Four Thirds (GM1) and an one-inch (FZ1000) sensor. The GM1 has a resolution of 15.8 megapixel, whereas the FZ1000 provides 20 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 GM1 vs Panasonic FZ1000

The physical size and weight of the Panasonic GM1 and the Panasonic FZ1000 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 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 – the GM1 – represents the basis or 100 percent across all the size and weight measures).

Compare Panasonic GM1 vs Panasonic FZ1000
Compare GM1 versus FZ1000 top
Compare GM1 and FZ1000 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic FZ1000 is considerably larger (149 percent) than the Panasonic GM1. In this context, it is worth noting that neither the GM1 nor the FZ1000 are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the FZ1000 has a lens build in, whereas the GM1 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can find an overview of optics for the GM1 and their specifications in the Micro Four Thirds Lens Catalog.

Concerning battery life, the GM1 gets 230 shots out of its DMW-BLH7 battery, while the FZ1000 can take 360 images on a single charge of its DMW-BLC12 power pack.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you would like to visualize and compare a different camera combination, just use the right or left arrows in the table to switch to the respective camera. Alternatively, you can also navigate to the CAM-parator app and make your selection from the full list of cameras 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 GM1» 3.9 in 2.2 in 1.2 in 7.2 oz 230 n Oct 2013 749- i Panasonic GM1
Panasonic FZ1000« 5.4 in 3.9 in 5.2 in 29.3 oz 360 n Jun 2014 899- i Panasonic FZ1000
Canon G1 X Mark II« » 4.6 in 2.9 in 2.6 in 19.5 oz 240 n Feb 2014 799 i i Canon G1 X Mark II
Olympus E-M10« » 4.7 in 3.2 in 1.8 in 14.0 oz 320 n Jan 2014 699- i Olympus E-M10
Panasonic FZ2500« » 5.4 in 4.0 in 5.3 in 32.3 oz 350 n Sep 2016 1,199 i i Panasonic FZ2500
Panasonic GX85« » 4.8 in 2.8 in 1.7 in 15.0 oz 290 n Apr 2016 799 i i Panasonic GX85
Panasonic G7« » 4.9 in 3.4 in 3.0 in 14.5 oz 350 n May 2015 649- i Panasonic G7
Panasonic GH4« » 5.2 in 3.7 in 3.3 in 19.8 oz 500 Y Feb 2014 1,499- i Panasonic GH4
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 GX7« » 4.8 in 2.8 in 2.2 in 14.2 oz 350 n Aug 2013 999- i Panasonic GX7
Ricoh GR« » 4.6 in 2.4 in 1.4 in 8.6 oz 290 n Apr 2013 799- i Ricoh GR
Sony RX100 IV« » 4.0 in 2.3 in 1.6 in 10.5 oz 280 n Jun 2015 999- i Sony RX100 IV
Sony RX100 III« » 4.0 in 2.3 in 1.6 in 10.2 oz 320 n May 2014 799- i Sony RX100 III
Sony RX100 II« » 4.0 in 2.3 in 1.5 in 9.9 oz 350 n Jun 2013 749- i Sony RX100 II

Any camera purchase 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. 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.

 

Sensor comparison: Panasonic GM1 vs Panasonic FZ1000

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 associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Panasonic GM1 features a Four Thirds sensor and the Panasonic FZ1000 an one-inch sensor. The sensor area in the FZ1000 is 48 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 2.7. The sensor in the GM1 has a native 4:3 aspect ratio, while the one in the FZ1000 offers a 3:2 aspect.

Panasonic GM1 and Panasonic FZ1000 sensor measures

Despite having a smaller sensor, the FZ1000 offers a higher resolution of 20 megapixel, compared with 15.8 MP of the GM1. This megapixel advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 2.41μm versus 3.77μm for the GM1). However, it should be noted that the FZ1000 is a somewhat more recent model (by 7 months) than the GM1, and its sensor might have benefitted from technological advances during this time that partly offset its pixel-size disadvantage.

GM1 versus FZ1000 MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). The Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar image quality. 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 GM1» Four Thirds 15.8 4592 34481080/60i22.311.766066Panasonic GM1
Panasonic FZ1000« 1-inch 20.0 5472 36484K/30p22.111.751764Panasonic FZ1000
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 FZ2500« » 1-inch 20.0 5472 36484K/30p----Panasonic FZ2500
Panasonic GX85« » Four Thirds 15.8 4592 34484K/30p22.912.666271Panasonic GX85
Panasonic G7« » Four Thirds 15.8 4592 34484K/30p----Panasonic G7
Panasonic GH4« » Four Thirds 15.9 4608 34564K/30p23.212.879174Panasonic GH4
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 GX7« » Four Thirds 15.8 4592 34481080/60p22.612.271870Panasonic GX7
Ricoh GR« » APS-C 16.1 4928 32641080/30p23.613.597278Ricoh GR
Sony RX100 IV« » 1-inch 20.0 5472 36484K/30p22.812.659170Sony RX100 IV
Sony RX100 III« » 1-inch 20.0 5472 36481080/60p22.412.349567Sony RX100 III
Sony RX100 II« » 1-inch 20.0 5472 36481080/60p22.512.448367Sony RX100 II

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 FZ1000 provides a better video resolution than the GM1. It can shoot movie footage at 4K/30p, while the GM1 is limited to 1080/60i.

 

Feature comparison: Panasonic GM1 vs Panasonic FZ1000

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the FZ1000 has an electronic viewfinder (2359k 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 FZ1000 along with similar information for a selection of comparators. 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 GM1»- n 3.0 1036 fixed Y 500 5.0 Y n Panasonic GM1
Panasonic FZ1000«2359 n 3.0 921 swivel n 4000 12.0 Y Y Panasonic FZ1000
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 FZ2500« »2360 n 3.0 1040 swivel Y 4000 12.0 Y Y Panasonic FZ2500
Panasonic GX85« »2765 n 3.0 1040 tilting Y 4000 8.0 Y Y Panasonic GX85
Panasonic G7« »2360 n 3.0 1040 swivel Y 4000 7.0 Y n Panasonic G7
Panasonic GH4« »2359 n 3.0 1036 swivel Y 8000 12.0 Y n Panasonic GH4
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 GX7« »2760 n 3.0 1040 tilting Y 8000 5.0 Y Y Panasonic GX7
Ricoh GR« »- n 3.0 1230 fixed n 4000 4.0 Y n Ricoh GR
Sony RX100 IV« »2359 n 3.0 1228 tilting n 2000 16.0 Y Y Sony RX100 IV
Sony RX100 III« »1440 n 3.0 1229 tilting n 2000 10.0 Y Y Sony RX100 III
Sony RX100 II« »- n 3.0 1229 tilting n 2000 10.0 Y Y Sony RX100 II

The reported shutter speed and shutter burst refer to the use of the mechanical shutter. In addition, both cameras feature an electronic shutter, which makes silent shooting and higher burst speeds possible. However, this mode is less suitable for photographing moving objects (rolling shutter) or shooting under artificial light sources (flickering).

Both the GM1 and the FZ1000 have been discontinued, but can regularly be found used on eBay. The GM1 was replaced by the Panasonic GM5, while the FZ1000 was followed by the Panasonic FZ2500.

Review summary: Panasonic GM1 vs Panasonic FZ1000

So how do things add up? Is there a clear favorite between the Panasonic GM1 and the Panasonic FZ1000? A synthesis of the relative strong points of each of the models is listed below.


Arguments in favor of the Panasonic Lumix DMC-GM1:

  • Better low-light sensitivity: Requires less light for good images (0.4 stops ISO advantage).
  • More detailed LCD: Has a higher resolution rear screen (1036k vs 921k dots).
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • More flexible: Accepts interchangeable lenses, so that lens characteristics can be altered.
  • More compact: Is smaller (99x55mm vs 137x99mm) and thus needs less room in the bag.
  • More heavily discounted: Has been on the market for longer (launched in October 2013).


Advantages of the Panasonic Lumix DMC-FZ1000:

  • More detail: Has more megapixels (20 vs 15.8MP), which boosts linear resolution by 15%.
  • Better video: Provides higher definition movie capture (4K/30p vs 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 (12 vs 5 flaps/sec) to capture the decisive moment.
  • Ready to shoot: Has an integrated lens, whereas the GM1 necessitates an extra lens.
  • Longer lasting: Gets more shots (360 versus 230) out of a single battery charge.
  • Sharper images: Has stabilization technology build-in to reduce the impact of hand-shake.
  • More modern: Was introduced somewhat (7 months) more recently.

If the count of individual advantages (bullet points above) is taken as a guide, the FZ1000 is the clear winner of the contest (10 : 6 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.

GM1 06:10 FZ1000

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 FZ1000 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 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 GM1»Rec78/1005/54.5/54.5/5 Oct 2013 749- i Panasonic GM1
Panasonic FZ1000«HiRec82/1004.5/54.5/54.5/5 Jun 2014 899- i Panasonic FZ1000
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 FZ2500« »Rec82/1004.5/54.5/55/5 Sep 2016 1,199 i i Panasonic FZ2500
Panasonic GX85« »HiRec82/1005/54.5/55/5 Apr 2016 799 i i Panasonic GX85
Panasonic G7« »HiRec80/1005/54.5/54.5/5 May 2015 649- i Panasonic G7
Panasonic GH4« »HiRec85/1005/55/55/5 Feb 2014 1,499- i Panasonic GH4
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 GX7« »Rec79/1005/54.5/55/5 Aug 2013 999- i Panasonic GX7
Ricoh GR« »-79/1004.5/54.5/54.5/5 Apr 2013 799- i Ricoh GR
Sony RX100 IV« »HiRec85/1004/54.5/54.5/5 Jun 2015 999- i Sony RX100 IV
Sony RX100 III« »HiRec82/1004.5/54.5/55/5 May 2014 799- i Sony RX100 III
Sony RX100 II« »HiRec79/1004.5/55/54.5/5 Jun 2013 749- i Sony RX100 II

The above review scores should be interpreted with care, though. The ratings are only valid when refering to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparisons of ratings among very different cameras or across long time periods 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. If the camera you are interested in is not available, please send me an email, and I will try to update the database with the necessary infos.

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