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Panasonic GH2 versus Panasonic G7

The Panasonic Lumix DMC-GH2 and the Panasonic Lumix DMC-G7 are two digital cameras that were revealed to the public, respectively, in September 2010 and May 2015. Both the GH2 and the G7 are mirrorless interchangeable lens cameras that are equipped with a Four Thirds sensor. The GH2 has a resolution of 15.9 megapixel, whereas the G7 provides 15.8 MP.

Body comparison

The physical size and weight of the Panasonic GH2 and the Panasonic G7 are illustrated in the side-by-side display below. Three consecutive views from the front, the top, and the rear side are shown. All size dimensions are rounded to the nearest millimeter. If you prefer, you can also use the toggle button to switch to a comparison in percentage terms (in this case, the camera on the left – the GH2 – represents the basis or 100 percent across all the size and weight measures).

Panasonic GH2 vs Panasonic G7 front
GH2 versus G7 top view
GH2 and G7 rear side
Body view (GH2 on the left)

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic G7 is somewhat smaller (4 percent) than the Panasonic GH2. Moreover, the G7 is markedly lighter (7 percent) than the GH2. In this context, it is worth noting that neither the GH2 nor the G7 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.

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 comparisons there.

Camera Body Specifications
Camera Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(y/n)
Camera
Launch
(year)
Launch
Price
(USD)
Street
Price
(amazon)
Used
Price
(ebay)
Panasonic GH2 (⇒ rgt) 124 mm 90 mm 76 mm 442 g 330 no 2010 1,499discont. check
Panasonic G7 (⇒ lft) 125 mm 86 mm 77 mm 410 g 350 no 2015 649discont. check
Panasonic GF7 (⇒ lft | rgt) 107 mm 65 mm 33 mm 266 g 230 no 2015 499discont. check
Panasonic GM5 (⇒ lft | rgt) 99 mm 60 mm 36 mm 211 g 220 no 2014 749discont. check
Panasonic G6 (⇒ lft | rgt) 122 mm 85 mm 71 mm 390 g 340 no 2013 599discont. check
Panasonic GM1 (⇒ lft | rgt) 99 mm 55 mm 30 mm 204 g 230 no 2013 749discont. check
Panasonic GH3 (⇒ lft | rgt) 133 mm 93 mm 82 mm 550 g 540 YES 2012 1,299discont. check
Panasonic G3 (⇒ lft | rgt) 115 mm 84 mm 47 mm 336 g 270 no 2011 599discont. check
Panasonic GX1 (⇒ lft | rgt) 116 mm 68 mm 39 mm 318 g 320 no 2011 949discont. check
Panasonic G2 (⇒ lft | rgt) 124 mm 84 mm 74 mm 428 g 360 no 2010 599discont. check
Panasonic G10 (⇒ lft | rgt) 124 mm 84 mm 74 mm 388 g 380 no 2010 499discont. check
Panasonic GF1 (⇒ lft | rgt) 119 mm 71 mm 36 mm 385 g 380 no 2009 749discont. check
Panasonic GH1 (⇒ lft | rgt) 124 mm 90 mm 45 mm 385 g 300 no 2009 1,499discont. check

The listed prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The G7 was launched at a markedly lower price (by 57 percent) than the GH2, which puts it into a different market segment. 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

The size of the sensor inside a digital camera is one of the key determinants 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. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better 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 GH2 and Panasonic G7 sensor measures
Sensor size

While the two cameras under review share the same sensor size, the GH2 offers a slightly higher resolution of 15.9 megapixel, compared with 15.8 MP of the G7. This megapixel advantage translates into a 0.3 percent gain in linear resolution. On the other hand, these sensor specs imply that the GH2 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 G7). Moreover, it should be noted that the G7 is much more recent (by 4 years and 7 months) than the GH2, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of individual pixels.

GH2 versus G7 MP
Sensor resolution

For most cameras, data on sensor performance has been reported by DXO Mark. 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 following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

Sensor Characteristics
Camera Sensor
Class
Resolution
(Megapixel)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Panasonic GH2 (⇒ rgt) Four Thirds 15.9 4608 3456 1080/60i 21.2 11.3 655 60
Panasonic G7 (⇒ lft) Four Thirds 15.8 4592 3448 4K/30p - - - -
Panasonic GF7 (⇒ lft | rgt) Four Thirds 15.8 4592 3448 1080/60p - - - -
Panasonic GM5 (⇒ lft | rgt) Four Thirds 15.8 4592 3448 1080/60p 22.1 11.7 721 66
Panasonic G6 (⇒ lft | rgt) Four Thirds 15.9 4608 3456 1080/60p 21.3 11.5 639 61
Panasonic GM1 (⇒ lft | rgt) Four Thirds 15.8 4592 3448 1080/60i 22.3 11.7 660 66
Panasonic GH3 (⇒ lft | rgt) Four Thirds 15.9 4608 3456 1080/60p 22.7 12.4 812 71
Panasonic G3 (⇒ lft | rgt) Four Thirds 15.8 4592 3448 1080/60i 21 10.6 667 56
Panasonic GX1 (⇒ lft | rgt) Four Thirds 15.8 4592 3448 1080/60p 20.8 10.6 703 55
Panasonic G2 (⇒ lft | rgt) Four Thirds 12.0 4000 3000 720/30p 21.2 10.3 493 53
Panasonic G10 (⇒ lft | rgt) Four Thirds 12.0 4000 3000 720/30p 21.2 10.1 411 52
Panasonic GF1 (⇒ lft | rgt) Four Thirds 12.0 4000 3000 720/30p 21.2 10.3 513 54
Panasonic GH1 (⇒ lft | rgt) Four Thirds 12.0 4000 3000 1080/24p 21.6 11.6 772 64

Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the G7 provides a better video resolution than the GH2. It can shoot movie footage at 4K/30p, while the GH2 is limited to 1080/60i.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. The two cameras under review are similar with respect to both having an electronic viewfinder. However, the one in the G7 offers a substantially higher resolution than the one in the GH2 (2360k vs 1534k dots). The table below summarizes some of the other core capabilities of the Panasonic GH2 and Panasonic G7 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 Viewfinder
(Type or
'000 dots)
Control
Panel
(Y/n)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(Y/n)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec))
Build-in
Flash
(GN)
Build-in
Image
Stab
Panasonic GH2 (⇒ rgt) 1534 no 3.0 460 swivel no 4000 3.0 15.6 no
Panasonic G7 (⇒ lft) 2360 no 3.0 1040 swivel YES 4000 7.0 9.3 no
Panasonic GF7 (⇒ lft | rgt) no no 3.0 1040 tilting YES 500 5.8 4 no
Panasonic GM5 (⇒ lft | rgt) 1166 no 3.0 921 fixed YES 500 5.8 no no
Panasonic G6 (⇒ lft | rgt) 1440 no 3.0 1036 swivel YES 4000 7.0 10.5 no
Panasonic GM1 (⇒ lft | rgt) no no 3.0 1036 fixed YES 500 5.0 4 no
Panasonic GH3 (⇒ lft | rgt) 1746 no 3.0 614 swivel YES 4000 6.0 12 no
Panasonic G3 (⇒ lft | rgt) 1440 no 3.0 460 swivel YES 4000 4.0 11 no
Panasonic GX1 (⇒ lft | rgt) no no 3.0 460 fixed YES 4000 4.2 7.6 no
Panasonic G2 (⇒ lft | rgt) 1440 no 3.0 460 swivel YES 4000 2.6 11 no
Panasonic G10 (⇒ lft | rgt) 202 no 3.0 460 fixed no 4000 2.6 11 no
Panasonic GF1 (⇒ lft | rgt) no no 3.0 460 fixed no 4000 3.0 6.0 no
Panasonic GH1 (⇒ lft | rgt) 1440 no 3.0 460 swivel no 4000 3.0 10.5 no

Both the GH2 and the G7 have been discontinued, but can regularly be found used on ebay. The GH2 was replaced by the Panasonic GH3, while the G7 was followed by the Panasonic G85.

Summary

So what conclusions can be drawn? Which of the two cameras – the Panasonic GH2 or the Panasonic G7 – has the upper hand? Below is a summary of the relative strengths of each of the two contestants.


Advantages of the Panasonic Lumix DMC-GH2:

  • More heavily discounted: Has been available for much longer (launched in September 2010).

Reasons to prefer the Panasonic Lumix DMC-G7:

  • Better video: Provides higher definition movie capture (4K/30p vs 1080/60i).
  • More detailed viewfinder: Has higher resolution electronic viewfinder (2360k vs 1534k dots).
  • More detailed LCD: Has a higher resolution rear screen (1040k vs 460k dots).
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • Faster burst: Shoots at higher frequency (7 vs 3 flaps/sec) to capture the decisive moment.
  • More affordable: Was introduced into a lower priced category (57 percent cheaper at launch).
  • More modern: Reflects 4 years and 7 months of technical progress since the GH2 launch.

If the count of relative strengths (bullet points above) is taken as a measure, the G7 is the clear winner of the contest (7 : 1 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points.

GH2 01:07 G7

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 GH2 or the G7 handle or perform in practice. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable. This is where reviews by experts come in. The table below summarizes the assessments of some of the best known camera review sites. You can find the full text of the reviews, respectively, at cameralabs.com, dpreview.com, ephotozine.com, imaging-resource.com, and photographyblog.com.

Review scores
Camera camera
labs
dp
review
ephoto
zine
imaging
resource
photography
blog
Camera
Launch
(year)
Launch
Price
(USD)
Street
Price
(amazon)
Used
Price
(ebay)
Panasonic GH2 (⇒ rgt) 86/100 HiRec 79/100 Silver 4.5/5 4.5/5 5/5 2010 1,499discont. check
Panasonic G7 (⇒ lft) HiRec 80/100 Silver 5/5 4.5/5 4.5/5 2015 649discont. check
Panasonic GF7 (⇒ lft | rgt) Rec - 4.5/5 4.5/5 4.5/5 2015 499discont. check
Panasonic GM5 (⇒ lft | rgt) Rec 77/100 Silver 5/5 5/5 4.5/5 2014 749discont. check
Panasonic G6 (⇒ lft | rgt) HiRec - 5/5 - 4.5/5 2013 599discont. check
Panasonic GM1 (⇒ lft | rgt) Rec 78/100 Gold 5/5 4.5/5 4.5/5 2013 749discont. check
Panasonic GH3 (⇒ lft | rgt) HiRec 79/100 Gold 4.5/5 5/5 4.5/5 2012 1,299discont. check
Panasonic G3 (⇒ lft | rgt) 88/100 HiRec 75/100 Silver 4.5/5 4.5/5 5/5 2011 599discont. check
Panasonic GX1 (⇒ lft | rgt) 85/100 Rec 77/100 Silver 4.5/5 4.5/5 4.5/5 2011 949discont. check
Panasonic G2 (⇒ lft | rgt) - 72/100 Silver 4/5 4/5 4.5/5 2010 599discont. check
Panasonic G10 (⇒ lft | rgt) - 70/100 4/5 - 4/5 2010 499discont. check
Panasonic GF1 (⇒ lft | rgt) 85/100 69/100 4.5/5 4.5/5 4.5/5 2009 749discont. check
Panasonic GH1 (⇒ lft | rgt) 89/100 HiRec 72/100 HiRec 4.5/5 5/5 4.5/5 2009 1,499discont. check

The review scores listed above should be treated with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Hence, a score should always be seen in the context of the camera's market launch date and its price, 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 comparisons

In case you would like to check on the differences and similarities of other camera models, just use the search menu 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 do not see the camera that you are looking for, please contact me, and I will try to update the database with the necessary infos.

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