Panasonic GH2 versus Panasonic G2
The Panasonic Lumix DMC-GH2 and the Panasonic Lumix DMC-G2 are two digital cameras that were announced, respectively, in September 2010 and March 2010. Both the GH2 and the G2 are mirrorless interchangeable lens cameras that are equipped with a Four Thirds sensor. The GH2 has a resolution of 15.9 megapixel, whereas the G2 provides 12 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 GH2 vs Panasonic G2
The physical size and weight of the Panasonic GH2 and the Panasonic G2 are illustrated in the side-by-side display below. 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 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 GH2 – represents 100 percent across all the size and weight measures).
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic G2 is notably smaller (7 percent) than the Panasonic GH2. Moreover, the G2 is slightly lighter (3 percent) than the GH2. In this context, it is worth noting that neither the GH2 nor the G2 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 camera comparisons there.
|Camera Body Specifications|
|Panasonic GH2»||4.9 in||3.5 in||3.0 in||15.6 oz||330||n||Sep 2010||1,499||-|
|Panasonic G2«||4.9 in||3.3 in||2.9 in||15.1 oz||360||n||Mar 2010||599||-|
|Panasonic GM5« »||3.9 in||2.4 in||1.4 in||7.4 oz||220||n||Sep 2014||749||-|
|Panasonic G6« »||4.8 in||3.3 in||2.8 in||13.8 oz||340||n||Apr 2013||599||-|
|Panasonic GM1« »||3.9 in||2.2 in||1.2 in||7.2 oz||230||n||Oct 2013||749||-|
|Panasonic GH3« »||5.2 in||3.7 in||3.2 in||19.4 oz||540||Y||Sep 2012||1,299||-|
|Panasonic GF3« »||4.3 in||2.6 in||1.3 in||9.3 oz||300||n||Jun 2011||549||-|
|Panasonic G3« »||4.5 in||3.3 in||1.9 in||11.9 oz||270||n||May 2011||599||-|
|Panasonic GX1« »||4.6 in||2.7 in||1.5 in||11.2 oz||320||n||Nov 2011||949||-|
|Panasonic GF2« »||4.4 in||2.7 in||1.3 in||10.9 oz||300||n||Nov 2010||549||-|
|Panasonic G10« »||4.9 in||3.3 in||2.9 in||13.7 oz||380||n||Mar 2010||499||-|
|Panasonic GF1« »||4.7 in||2.8 in||1.4 in||13.6 oz||380||n||Sep 2009||749||-|
|Panasonic GH1« »||4.9 in||3.5 in||1.8 in||13.6 oz||300||n||Mar 2009||1,499||-|
|Panasonic G1« »||4.9 in||3.3 in||1.8 in||12.7 oz||410||n||Sep 2008||599||-|
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 G2 was launched at a markedly lower price (by 60 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: Panasonic GH2 vs Panasonic G2
The size of the sensor inside a digital camera is one of the key determinants 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. 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 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.
While the two cameras under review share the same sensor size, the GH2 offers a higher resolution of 15.9 megapixel, compared with 12 MP of the G2. This megapixel advantage translates into a 15 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 4.33μm for the G2). In this context, it should be noted, however, that the GH2 is a somewhat more recent model (by 6 months) than the G2, and its sensor might have benefitted from technological advances during this time that at least partly compensate for the smaller pixel size.
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"). Of the two cameras under review, the GH2 has a notably higher overall DXO score than the G2 (overall score 7 points higher), which gives it an advantage in terms of imaging quality. 1 EV in additional dynamic range, and 0.4 stops in additional low light sensitivity. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
|Panasonic GH2»||Four Thirds||15.9||4608||3456||1080/60i||21.2||11.3||655||60|
|Panasonic G2«||Four Thirds||12.0||4000||3000||720/30p||21.2||10.3||493||53|
|Panasonic GM5« »||Four Thirds||15.8||4592||3448||1080/60p||22.1||11.7||721||66|
|Panasonic G6« »||Four Thirds||15.9||4608||3456||1080/60p||21.3||11.5||639||61|
|Panasonic GM1« »||Four Thirds||15.8||4592||3448||1080/60i||22.3||11.7||660||66|
|Panasonic GH3« »||Four Thirds||15.9||4608||3456||1080/60p||22.7||12.4||812||71|
|Panasonic GF3« »||Four Thirds||12.0||4000||3000||1080/60i||20.6||10.0||458||49|
|Panasonic G3« »||Four Thirds||15.8||4592||3448||1080/60i||21.0||10.6||667||56|
|Panasonic GX1« »||Four Thirds||15.8||4592||3448||1080/60p||20.8||10.6||703||55|
|Panasonic GF2« »||Four Thirds||12.0||4000||3000||1080/60i||21.2||10.3||506||54|
|Panasonic G10« »||Four Thirds||12.0||4000||3000||720/30p||21.2||10.1||411||52|
|Panasonic GF1« »||Four Thirds||12.0||4000||3000||720/30p||21.2||10.3||513||54|
|Panasonic GH1« »||Four Thirds||12.0||4000||3000||1080/24p||21.6||11.6||772||64|
|Panasonic G1« »||Four Thirds||12.0||4000||3000||-||21.1||10.3||463||53|
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 GH2 provides a higher video resolution than the G2. It can shoot video footage at 1080/60i, while the G2 is limited to 720/30p.
Feature comparison: Panasonic GH2 vs Panasonic G2
Beyond body and sensor, cameras can and do differ across a range of features. The two cameras under consideration are similar with respect to both having an electronic viewfinder. However, the one in the GH2 offers a slightly higher resolution than the one in the G2 (1534k vs 1440k dots). The adjacent table lists some of the other core features of the Panasonic GH2 and Panasonic G2 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.
|Panasonic GM5« »||1166||n||3.0||921||fixed||Y||500||5.8||n||n|
|Panasonic G6« »||1440||n||3.0||1036||swivel||Y||4000||7.0||Y||n|
|Panasonic GM1« »||-||n||3.0||1036||fixed||Y||500||5.0||Y||n|
|Panasonic GH3« »||1746||n||3.0||614||swivel||Y||4000||6.0||Y||n|
|Panasonic GF3« »||-||n||3.0||460||fixed||Y||4000||3.2||Y||n|
|Panasonic G3« »||1440||n||3.0||460||swivel||Y||4000||4.0||Y||n|
|Panasonic GX1« »||-||n||3.0||460||fixed||Y||4000||4.2||Y||n|
|Panasonic GF2« »||-||n||3.0||460||fixed||Y||4000||2.6||Y||n|
|Panasonic G10« »||202||n||3.0||460||fixed||n||4000||2.6||Y||n|
|Panasonic GF1« »||-||n||3.0||460||fixed||n||4000||3.0||Y||n|
|Panasonic GH1« »||1440||n||3.0||460||swivel||n||4000||3.0||Y||n|
|Panasonic G1« »||1440||n||3.0||460||swivel||n||4001||3.0||Y||n|
Both the GH2 and the G2 have been discontinued, but can regularly be found used on eBay. The G2 was replaced by the Panasonic G3, while the GH2 was followed by the Panasonic GH3.
Review summary: Panasonic GH2 vs Panasonic G2
So what conclusions can be drawn? Is the Panasonic GH2 better than the Panasonic G2 or vice versa? A synthesis of the relative strong points of each of the models is listed below.
Advantages of the Panasonic Lumix DMC-GH2:
- More detail: Offers more megapixels (15.9 vs 12MP) with a 15% higher linear resolution.
- Better image quality: Scores markedly higher (7 points) in the DXO overall assessment.
- More dynamic range: Captures a larger spectrum of light and dark details (1 EV of extra DR).
- Better low-light sensitivity: Requires less light for good images (0.4 stops ISO advantage).
- Better video: Provides higher definition movie capture (1080/60i vs 720/30p).
- Faster burst: Shoots at higher frequency (3 vs 2.6 flaps/sec) to capture the decisive moment.
- More modern: Is somewhat more recent (announced 6 months after the G2).
Arguments in favor of the Panasonic Lumix DMC-G2:
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- More affordable: Was introduced into a lower priced category (60 percent cheaper at launch).
- More heavily discounted: Has been on the market for longer (launched in March 2010).
If the count of relative strengths (bullet points above) is taken as a measure, the GH2 is the clear winner of the match-up (7 : 3 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.
In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains incomplete and does no justice, for example, to the way the GH2 or the G2 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 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). The detailed reviews can be accessed by clicking on the site logo in the table header.
|Panasonic GH2»||HiRec||79/100||4.5/5||4.5/5||5/5||Sep 2010||1,499||-|
|Panasonic G2«||-||72/100||4/5||4/5||4.5/5||Mar 2010||599||-|
|Panasonic GM5« »||Rec||77/100||5/5||5/5||4.5/5||Sep 2014||749||-|
|Panasonic G6« »||HiRec||-||5/5||-||4.5/5||Apr 2013||599||-|
|Panasonic GM1« »||Rec||78/100||5/5||4.5/5||4.5/5||Oct 2013||749||-|
|Panasonic GH3« »||HiRec||79/100||4.5/5||5/5||4.5/5||Sep 2012||1,299||-|
|Panasonic GF3« »||82/100||71/100||4.5/5||4.5/5||4/5||Jun 2011||549||-|
|Panasonic G3« »||HiRec||75/100||4.5/5||4.5/5||5/5||May 2011||599||-|
|Panasonic GX1« »||Rec||77/100||4.5/5||4.5/5||4.5/5||Nov 2011||949||-|
|Panasonic GF2« »||82/100||70/100||4.5/5||4.5/5||4.5/5||Nov 2010||549||-|
|Panasonic G10« »||-||70/100||4/5||-||4/5||Mar 2010||499||-|
|Panasonic GF1« »||85/100||69/100||4.5/5||4.5/5||4.5/5||Sep 2009||749||-|
|Panasonic GH1« »||HiRec||72/100||4.5/5||5/5||4.5/5||Mar 2009||1,499||-|
|Panasonic G1« »||HiRec||70/100||4/5||4.5/5||4.5/5||Sep 2008||599||-|
The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, 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.
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