Panasonic GH2 vs Pentax Q
The Panasonic Lumix DMC-GH2 and the Pentax Q are two digital cameras that were officially introduced, respectively, in September 2010 and June 2011. Both the GH2 and the Pentax Q are mirrorless interchangeable lens cameras that are based on a Four Thirds (GH2) and a 1/2.3-inch (Pentax Q) sensor. The Panasonic has a resolution of 15.9 megapixels, whereas the Pentax provides 12 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Panasonic GH2||Pentax Q|
|Mirrorless system camera||Mirrorless system camera|
|Micro Four Thirds lenses||Pentax Q mount lenses|
|15.9 MP, Four Thirds Sensor||12 MP, 1/2.3" Sensor|
|1080/60i Video||1080/30p Video|
|ISO 160-12800||ISO 125-6400|
|Electronic viewfinder (1534k dots)||Viewfinder optional|
|3.0" LCD, 460k dots||3.0" LCD, 460k dots|
|Swivel screen (not touch-sensitive)||Fixed screen (not touch-sensitive)|
|3 shutter flaps per second||1.5 shutter flaps per second|
|Lens stabilization only||In-body stabilization|
|330 shots per battery charge||230 shots per battery charge|
|124 x 90 x 76 mm, 442 g||98 x 57 x 31 mm, 180 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Panasonic Lumix DMC-GH2 and the Pentax Q? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.
The side-by-side display below illustrates the physical size and weight of the Panasonic GH2 and the Pentax Q. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All size dimensions are rounded to the nearest millimeter.
The GH2 can be obtained in two different colors (black, silver), while the Pentax Q is also available in two color-versions, but different ones (black, white).
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax Q is considerably smaller (50 percent) than the Panasonic GH2. Moreover, the Pentax Q is substantially lighter (59 percent) than the GH2. In this context, it is worth noting that neither the GH2 nor the Pentax Q 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. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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.
|Panasonic GH2»||4.9 in||3.5 in||3.0 in||15.6 oz||330||n||Sep 2010||899||Panasonic GH2|
|Pentax Q«||3.9 in||2.2 in||1.2 in||6.3 oz||230||n||Jun 2011||649||Pentax Q|
|Olympus XZ-2« »||4.4 in||2.6 in||1.9 in||12.2 oz||340||n||Sep 2012||599||Olympus XZ-2|
|Olympus E-PL2« »||4.5 in||2.8 in||1.7 in||12.8 oz||280||n||Jan 2011||599||Olympus E-PL2|
|Olympus E-PL3« »||4.3 in||2.5 in||1.5 in||11.0 oz||300||n||Jun 2011||599||Olympus E-PL3|
|Olympus E-PL1« »||4.5 in||2.8 in||1.7 in||11.8 oz||290||n||Feb 2010||599||Olympus E-PL1|
|Olympus E-620« »||5.1 in||3.7 in||2.4 in||18.4 oz||500||n||Feb 2009||699||Olympus E-620|
|Panasonic GX85« »||4.8 in||2.8 in||1.7 in||15.0 oz||290||n||Apr 2016||799||Panasonic GX85|
|Panasonic GM5« »||3.9 in||2.4 in||1.4 in||7.4 oz||220||n||Sep 2014||749||Panasonic GM5|
|Panasonic GM1« »||3.9 in||2.2 in||1.2 in||7.2 oz||230||n||Oct 2013||749||Panasonic GM1|
|Panasonic GX7« »||4.8 in||2.8 in||2.2 in||14.2 oz||350||n||Aug 2013||999||Panasonic GX7|
|Panasonic GH3« »||5.2 in||3.7 in||3.2 in||19.4 oz||540||Y||Sep 2012||1,299||Panasonic GH3|
|Panasonic G3« »||4.5 in||3.3 in||1.9 in||11.9 oz||270||n||May 2011||599||Panasonic G3|
|Panasonic G10« »||4.9 in||3.3 in||2.9 in||13.7 oz||380||n||Mar 2010||499||Panasonic G10|
|Panasonic G2« »||4.9 in||3.3 in||2.9 in||15.1 oz||360||n||Mar 2010||599||Panasonic G2|
|Panasonic GF1« »||4.7 in||2.8 in||1.4 in||13.6 oz||380||n||Sep 2009||749||Panasonic GF1|
|Panasonic GH1« »||4.9 in||3.5 in||1.8 in||13.6 oz||300||n||Mar 2009||899||Panasonic GH1|
|Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.|
Any camera decision will obviously take relative prices into account. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The Pentax Q was launched at a markedly lower price (by 28 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.
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. 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Panasonic GH2 features a Four Thirds sensor and the Pentax Q a 1/2.3-inch sensor. The sensor area in the Pentax Q is 88 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 5.6. Both cameras feature a native aspect ratio (sensor width to sensor height) of 4:3.
Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors.
With 15.9MP, the GH2 offers a higher resolution than the Pentax Q (12MP), but the GH2 nevertheless has larger individual pixels (pixel pitch of 3.76μm versus 1.53μm for the Pentax Q) due to its larger sensor. However, the Pentax Q is a somewhat more recent model (by 9 months) than the GH2, and its sensor might have benefitted from technological advances during this time that enhance the light gathering capacity of its pixels.
The resolution advantage of the Panasonic GH2 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the GH2 for good quality output (200 dots per inch) amounts to 23 x 17.3 inch or 58.5 x 43.9 cm, for very good quality (250 dpi) 18.4 x 13.8 inch or 46.8 x 35.1 cm, and for excellent quality (300 dpi) 15.4 x 11.5 inch or 39 x 29.3 cm. The corresponding values for the Pentax Q are 20 x 15 inch or 50.8 x 38.1 cm for good quality, 16 x 12 inch or 40.6 x 30.5 cm for very good quality, and 13.3 x 10 inch or 33.9 x 25.4 cm for excellent quality prints.
The Panasonic Lumix DMC-GH2 has a native sensitivity range from ISO 160 to ISO 12800. The corresponding ISO settings for the Pentax Q are ISO 125 to ISO 6400 (no boost).
Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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 review, the GH2 provides substantially higher image quality than the Pentax Q, with an overall score that is 13 points higher. This advantage is based on 1 bits higher color depth, 0.2 EV in additional dynamic range, and 1.8 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 GH2|
|Pentax Q||1/2.3||12.0||4000||3000||1080/30p||20.2||11.1||189||47||Pentax Q|
|Olympus XZ-2||1/1.7||11.8||3968||2976||1080/30p||20.4||11.3||216||49||Olympus XZ-2|
|Olympus E-PL2||Four Thirds||12.2||4032||3024||720/30p||21.4||10.2||573||55||Olympus E-PL2|
|Olympus E-PL3||Four Thirds||12.2||4032||3024||1080/60i||20.9||10.3||499||52||Olympus E-PL3|
|Olympus E-PL1||Four Thirds||12.2||4032||3024||720/30p||21.5||10.1||487||54||Olympus E-PL1|
|Olympus E-620||Four Thirds||12.2||4032||3024||none||21.3||10.3||536||55||Olympus E-620|
|Panasonic GX85||Four Thirds||15.8||4592||3448||4K/30p||22.9||12.6||662||71||Panasonic GX85|
|Panasonic GM5||Four Thirds||15.8||4592||3448||1080/60p||22.1||11.7||721||66||Panasonic GM5|
|Panasonic GM1||Four Thirds||15.8||4592||3448||1080/60i||22.3||11.7||660||66||Panasonic GM1|
|Panasonic GX7||Four Thirds||15.8||4592||3448||1080/60p||22.6||12.2||718||70||Panasonic GX7|
|Panasonic GH3||Four Thirds||15.9||4608||3456||1080/60p||22.7||12.4||812||71||Panasonic GH3|
|Panasonic G3||Four Thirds||15.8||4592||3448||1080/60i||21.0||10.6||667||56||Panasonic G3|
|Panasonic G10||Four Thirds||12.0||4000||3000||720/30p||21.2||10.1||411||52||Panasonic G10|
|Panasonic G2||Four Thirds||12.0||4000||3000||720/30p||21.2||10.3||493||53||Panasonic G2|
|Panasonic GF1||Four Thirds||12.0||4000||3000||720/30p||21.2||10.3||513||54||Panasonic GF1|
|Panasonic GH1||Four Thirds||12.0||4000||3000||1080/24p||21.6||11.6||772||64||Panasonic GH1|
Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the GH2 provides a higher frame rate than the Pentax Q. It can shoot video footage at 1080/60i, while the Pentax is limited to 1080/30p.
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the GH2 has an electronic viewfinder (1534k dots), which can be very helpful when shooting in bright sunlight. In contrast, the Pentax Q relies on live view and the rear LCD for framing. That said, the Pentax Q can be equipped with an optional viewfinder – the O-VF1. The adjacent table lists some of the other core features of the Panasonic GH2 and Pentax Q along with similar information for a selection of comparators.
|Panasonic GH2||1534||n||3.0||460||swivel||n||1/4000s||3.0||Y||n||Panasonic GH2|
|Pentax Q||optional||n||3.0||460||fixed||n||1/2000s||1.5||Y||Y||Pentax Q|
|Olympus XZ-2||optional||n||3.0||920||tilting||Y||1/2000s||5.0||Y||Y||Olympus XZ-2|
|Olympus E-PL2||optional||n||3.0||460||fixed||n||1/4000s||3.0||Y||Y||Olympus E-PL2|
|Olympus E-PL3||optional||n||3.0||460||tilting||n||1/4000s||5.5||n||Y||Olympus E-PL3|
|Olympus E-PL1||optional||n||2.7||230||fixed||n||1/2000s||3.0||Y||Y||Olympus E-PL1|
|Olympus E-620||optical||n||2.7||230||swivel||n||1/4000s||4.0||Y||Y||Olympus E-620|
|Panasonic GX85||2765||n||3.0||1040||tilting||Y||1/4000s||8.0||Y||Y||Panasonic GX85|
|Panasonic GM5||1166||n||3.0||921||fixed||Y||1/500s||5.8||n||n||Panasonic GM5|
|Panasonic GM1||none||n||3.0||1036||fixed||Y||1/500s||5.0||Y||n||Panasonic GM1|
|Panasonic GX7||2760||n||3.0||1040||tilting||Y||1/8000s||5.0||Y||Y||Panasonic GX7|
|Panasonic GH3||1746||n||3.0||614||swivel||Y||1/4000s||6.0||Y||n||Panasonic GH3|
|Panasonic G3||1440||n||3.0||460||swivel||Y||1/4000s||4.0||Y||n||Panasonic G3|
|Panasonic G10||202||n||3.0||460||fixed||n||1/4000s||2.6||Y||n||Panasonic G10|
|Panasonic G2||1440||n||3.0||460||swivel||Y||1/4000s||2.6||Y||n||Panasonic G2|
|Panasonic GF1||optional||n||3.0||460||fixed||n||1/4000s||3.0||Y||n||Panasonic GF1|
|Panasonic GH1||1440||n||3.0||460||swivel||n||1/4000s||3.0||Y||n||Panasonic GH1|
One feature that differentiates the Pentax Q and the GH2 is in-body image stabilization (IBIS). The Pentax Q reduces the risk of handshake-induced blur with all attached lenses, while the GH2 has to rely on optical image stabilization in OIS-equipped lenses to achieve the same effect.The GH2 has an articulated LCD that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in snapping selfies. In contrast, the Pentax Q does not have a selfie-screen.
The Pentax Q has an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.
Concerning the storage of imaging data, both the GH2 and the Pentax Q write their files to SDXC cards.
For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Panasonic Lumix DMC-GH2 and Pentax Q and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Panasonic GH2||Y||stereo||mono||Y||-||mini||2.0||-||-||-||Panasonic GH2|
|Pentax Q||Y||mono||mono||-||-||mini||2.0||-||-||-||Pentax Q|
|Olympus XZ-2||Y||stereo||mono||-||-||mini||2.0||-||-||-||Olympus XZ-2|
|Olympus E-PL2||Y||stereo||none||-||-||mini||2.0||-||-||-||Olympus E-PL2|
|Olympus E-PL3||Y||stereo||none||-||-||mini||2.0||-||-||-||Olympus E-PL3|
|Olympus E-PL1||Y||stereo||none||-||-||mini||2.0||-||-||-||Olympus E-PL1|
|Olympus E-620||Y||none||none||-||-||none||2.0||-||-||-||Olympus E-620|
|Panasonic GX85||Y||stereo||mono||-||-||micro||2.0||Y||-||-||Panasonic GX85|
|Panasonic GM5||Y||stereo||mono||-||-||micro||2.0||Y||-||-||Panasonic GM5|
|Panasonic GM1||-||stereo||mono||-||-||micro||2.0||Y||-||-||Panasonic GM1|
|Panasonic GX7||Y||stereo||mono||-||-||mini||2.0||Y||Y||-||Panasonic GX7|
|Panasonic GH3||Y||stereo||mono||Y||Y||mini||2.0||Y||-||-||Panasonic GH3|
|Panasonic G3||Y||stereo||mono||-||-||mini||2.0||-||-||-||Panasonic G3|
|Panasonic G10||Y||mono||none||-||-||mini||2.0||-||-||-||Panasonic G10|
|Panasonic G2||Y||stereo||mono||-||-||mini||2.0||-||-||-||Panasonic G2|
|Panasonic GF1||Y||mono||mono||-||-||mini||2.0||-||-||-||Panasonic GF1|
|Panasonic GH1||Y||stereo||none||Y||-||mini||2.0||-||-||-||Panasonic GH1|
It is notable that the GH2 has a microphone port, which is missing on the Pentax Q. Such an external microphone input can help to substantially improve the quality of audio recordings when a good external microphone is used.
Both the GH2 and the Pentax Q have been discontinued, but can regularly be found used on eBay. The GH2 was replaced by the Panasonic GH3, while the Pentax Q was followed by the Pentax Q10. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Panasonic and Pentax websites.
So what conclusions can be drawn? Is there a clear favorite between the Panasonic GH2 and the Pentax Q? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.
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 substantially higher (13 points) in the DXO overall assessment.
- Better low-light sensitivity: Requires less light for good images (1.8 stops ISO advantage).
- Better video: Provides higher movie framerates (1080/60i versus 1080/30p).
- Better sound: Can connect to an external microphone for higher quality sound recording.
- Easier framing: Has an electronic viewfinder for image composition and settings control.
- More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/2000s) to freeze action.
- Faster burst: Shoots at higher frequency (3 vs 1.5 flaps/sec) to capture the decisive moment.
- Longer lasting: Can take more shots (330 versus 230) on a single battery charge.
- More heavily discounted: Has been on the market for longer (launched in September 2010).
Arguments in favor of the Pentax Q:
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- More compact: Is smaller (98x57mm vs 124x90mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 262g or 59 percent) and is thus easier to take along.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- More affordable: Was introduced into a lower priced category (28 percent cheaper at launch).
- More modern: Was introduced somewhat (9 months) more recently.
If the number of relative strengths (bullet points above) is taken as a guide, the GH2 is the clear winner of the match-up (12 : 6 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 when reflecting and deciding on a new camera. A professional wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports shooter. Hence, the decision which camera is best and worth buying is often a very personal one.
How about other alternatives? Do the specifications of the Panasonic GH2 and the Pentax Q place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera listing whether the two cameras rank among the cream of the crop.
In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the GH2 or the Pentax Q. 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 where reviews by experts come in. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.
The above review scores should be interpreted 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. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. 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? In case you are interested in seeing how other cameras pair up, just make your choice using the following search menu. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.
- Canon 2000D vs Pentax Q
- Canon SX740 vs Pentax Q
- Canon XC10 vs Panasonic GH2
- Fujifilm X-T4 vs Pentax Q
- Kodak AZ901 vs Panasonic GH2
- Leica M10-P vs Panasonic GH2
- Leica Q2 vs Panasonic GH2
- Leica V-LUX 1 vs Pentax Q
- Nikon D100 vs Panasonic GH2
- Nikon D850 vs Panasonic GH2
- Panasonic G85 vs Pentax Q
- Panasonic GH2 vs Panasonic GX1
Specifications: Panasonic GH2 vs Pentax Q
Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.
|Camera Model||Panasonic GH2||Pentax Q|
|Camera Type||Mirrorless system camera||Mirrorless system camera|
|Camera Lens||Micro Four Thirds lenses||Pentax Q mount lenses|
|Launch Date||September 2010||June 2011|
|Launch Price||USD 899||USD 649|
|Sensor Specs||Panasonic GH2||Pentax Q|
|Sensor Format||Four Thirds Sensor||1/2.3" Sensor|
|Sensor Size||17.3 x 13.0 mm||6.17 x 4.55 mm|
|Sensor Area||224.9 mm2||28.0735 mm2|
|Sensor Diagonal||21.6 mm||7.7 mm|
|Sensor Resolution||15.9 Megapixels||12 Megapixels|
|Image Resolution||4608 x 3456 pixels||4000 x 3000 pixels|
|Pixel Pitch||3.76 μm||1.53 μm|
|Pixel Density||7.08 MP/cm2||42.74 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/60i Video||1080/30p Video|
|ISO Setting||160-12800 ISO||125-6400 ISO|
|DXO Sensor Quality (score)||60||47|
|DXO Color Depth (bits)||21.2||20.2|
|DXO Dynamic Range (EV)||11.3||11.1|
|DXO Low Light (ISO)||655||189|
|Screen Specs||Panasonic GH2||Pentax Q|
|Viewfinder Type||Electronic viewfinder||Viewfinder optional|
|Viewfinder Field of View||100%|
|Viewfinder Resolution||1534k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0 inch||3.0 inch|
|LCD Resolution||460k dots||460k dots|
|LCD Attachment||Swivel screen||Fixed screen|
|Shooting Specs||Panasonic GH2||Pentax Q|
|Autofocus System||Contrast-detect AF||Contrast-detect AF|
|Continuous Shooting||3 shutter flaps/s||1.5 shutter flaps/s|
|Time-Lapse Photography||no Intervalometer||Intervalometer built-in|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|Fill Flash||Build-in Flash||Build-in Flash|
|Storage Medium||SDXC cards||SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||no||no|
|Connectivity Specs||Panasonic GH2||Pentax Q|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||mini HDMI|
|Microphone Port||External MIC port||no MIC socket|
|Wifi Support||no Wifi||no Wifi|
|Body Specs||Panasonic GH2||Pentax Q|
|Battery Life (CIPA)||330 shots per charge||230 shots per charge|
124 x 90 x 76 mm
(4.9 x 3.5 x 3.0 in)
98 x 57 x 31 mm
(3.9 x 2.2 x 1.2 in)
|Camera Weight||442 g (15.6 oz)||180 g (6.3 oz)|
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