Panasonic GX850 vs Pentax Q
The Panasonic Lumix DMC-GX850 (called Panasonic GX800 in some regions) and the Pentax Q are two digital cameras that were revealed to the public, respectively, in January 2017 and June 2011. Both the GX850 and the Pentax Q are mirrorless interchangeable lens cameras that are based on a Four Thirds (GX850) and a 1/2.3-inch (Pentax Q) sensor. The Panasonic has a resolution of 15.8 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 GX850||Pentax Q|
|Mirrorless system camera||Mirrorless system camera|
|Micro Four Thirds lenses||Pentax Q mount lenses|
|15.8 MP, Four Thirds Sensor||12 MP, 1/2.3" Sensor|
|4K/30p Video||1080/30p Video|
|ISO 200-25,600||ISO 125-6,400|
|No viewfinder, LCD framing||Viewfinder optional|
|3.0 LCD, 1040k dots||3.0 LCD, 460k dots|
|Tilting touchscreen||Fixed screen (not touch-sensitive)|
|10 shutter flaps per second||1.5 shutter flaps per second|
|Lens stabilization only||In-body stabilization|
|210 shots per battery charge||230 shots per battery charge|
|107 x 65 x 33 mm, 269 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-GX850 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 GX850 and the Pentax Q. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth dimensions are rounded to the nearest millimeter.
The GX850 can be obtained in three different colors (black, silver, red), while the Pentax Q is available in two color-versions (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 notably smaller (20 percent) than the Panasonic GX850. Moreover, the Pentax Q is markedly lighter (33 percent) than the GX850. In this context, it is worth noting that neither the GX850 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 following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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 GX850||4.2 in||2.6 in||1.3 in||9.5 oz||210||n||Jan 2017||549|
|Pentax Q||3.9 in||2.2 in||1.2 in||6.3 oz||230||n||Jun 2011||649|
|Olympus E-PL5||4.4 in||2.5 in||1.5 in||11.5 oz||360||n||Sep 2012||599|
|Olympus E-PM2||4.3 in||2.5 in||1.3 in||9.5 oz||360||n||Sep 2012||499|
|Olympus XZ-2||4.4 in||2.6 in||1.9 in||12.2 oz||340||n||Sep 2012||599|
|Olympus E-PL2||4.5 in||2.8 in||1.7 in||12.8 oz||280||n||Jan 2011||599|
|Olympus E-PL3||4.3 in||2.5 in||1.5 in||11.0 oz||300||n||Jun 2011||599|
|Olympus E-PL1||4.5 in||2.8 in||1.7 in||11.8 oz||290||n||Feb 2010||599|
|Olympus E-620||5.1 in||3.7 in||2.4 in||18.4 oz||500||n||Feb 2009||699|
|Panasonic GF7||4.2 in||2.6 in||1.3 in||9.4 oz||230||n||Jan 2015||499|
|Panasonic G6||4.8 in||3.3 in||2.8 in||13.8 oz||340||n||Apr 2013||599|
|Panasonic GF6||4.4 in||2.6 in||1.5 in||11.4 oz||340||n||Apr 2013||499|
|Panasonic G5||4.7 in||3.3 in||2.8 in||14.0 oz||320||n||Jul 2012||599|
|Panasonic GF5||4.3 in||2.6 in||1.5 in||9.4 oz||360||n||Apr 2012||499|
|Panasonic G3||4.5 in||3.3 in||1.9 in||11.9 oz||270||n||May 2011||599|
|Panasonic GF3||4.3 in||2.6 in||1.3 in||9.3 oz||300||n||Jun 2011||549|
|Panasonic GX1||4.6 in||2.7 in||1.5 in||11.2 oz||320||n||Nov 2011||699|
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
(1) Number of images that can be taken on a full battery charge according to the CIPA-standard; (2) Official announcement.
The price is, of course, an important factor in any camera decision. 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 GX850 was launched at a somewhat lower price (by 15 percent) than the Pentax Q, which makes it more attractive for photographers on a tight budget. 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.
The imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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 more expensive and lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Panasonic GX850 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 15.8MP, the GX850 offers a higher resolution than the Pentax Q (12MP), but the GX850 nevertheless has larger individual pixels (pixel pitch of 3.77μm versus 1.53μm for the Pentax Q) due to its larger sensor. Moreover, the GX850 is a much more recent model (by 5 years and 6 months) than the Pentax Q, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels. Coming back to sensor resolution, it should be mentioned that the GX850 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Panasonic GX850 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the GX850 for good quality output (200 dots per inch) amounts to 23 x 17.2 inches or 58.3 x 43.8 cm, for very good quality (250 dpi) 18.4 x 13.8 inches or 46.7 x 35 cm, and for excellent quality (300 dpi) 15.3 x 11.5 inches or 38.9 x 29.2 cm. The corresponding values for the Pentax Q are 20 x 15 inches or 50.8 x 38.1 cm for good quality, 16 x 12 inches or 40.6 x 30.5 cm for very good quality, and 13.3 x 10 inches or 33.9 x 25.4 cm for excellent quality prints.
The Panasonic Lumix DMC-GX850 has a native sensitivity range from ISO 200 to ISO 25600, which can be extended to ISO 100-25600. The corresponding ISO settings for the Pentax Q are ISO 125 to ISO 6400 (no boost).
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 GX850 provides substantially higher image quality than the Pentax Q, with an overall score that is 26 points higher. This advantage is based on 3 bits higher color depth, 2.2 EV in additional dynamic range, and 1.6 stops in additional low light sensitivity. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|Panasonic GX850||Four Thirds||15.8||4592||3448||4K/30p||23.2||13.3||586||73|
|Olympus E-PL5||Four Thirds||15.9||4608||3456||1080/30p||22.8||12.3||889||72|
|Olympus E-PM2||Four Thirds||15.9||4608||3456||1080/30p||22.7||12.2||932||72|
|Olympus E-PL2||Four Thirds||12.2||4032||3024||720/30p||21.4||10.2||573||55|
|Olympus E-PL3||Four Thirds||12.2||4032||3024||1080/60i||20.9||10.3||499||52|
|Olympus E-PL1||Four Thirds||12.2||4032||3024||720/30p||21.5||10.1||487||54|
|Olympus E-620||Four Thirds||12.2||4032||3024||none||21.3||10.3||536||55|
|Panasonic GF7||Four Thirds||15.8||4592||3448||1080/60p||..||..||..||..|
|Panasonic G6||Four Thirds||15.9||4608||3456||1080/60p||21.3||11.5||639||61|
|Panasonic GF6||Four Thirds||15.8||4592||3448||1080/60i||20.7||10.6||622||54|
|Panasonic G5||Four Thirds||15.9||4608||3456||1080/60p||..||..||..||..|
|Panasonic GF5||Four Thirds||12.0||4000||3000||1080/60i||21.4||11.6||618||61|
|Panasonic G3||Four Thirds||15.8||4592||3448||1080/60i||21.0||10.6||667||56|
|Panasonic GF3||Four Thirds||12.0||4000||3000||1080/60i||20.6||10.0||458||49|
|Panasonic GX1||Four Thirds||15.8||4592||3448||1080/60p||20.8||10.6||703||55|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the GX850 provides a higher video resolution than the Pentax Q. It can shoot video footage at 4K/30p, while the Pentax is limited to 1080/30p.
Apart from body and sensor, cameras can and do differ across a variety of features. The GX850 and the Pentax Q are similar in the sense that neither of the two has a viewfinder. The images are, thus, framed using live view on the rear LCD. That said, the Pentax Q can be equipped with an optional viewfinder – the O-VF1. The following table reports on some other key feature differences and similarities of the Panasonic GX850, the Pentax Q, and comparable cameras.
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The GX850 has a touchscreen, while the Pentax Q has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.The GX850 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 reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, the GX850 is one of those camera that have an additional electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).
The Panasonic GX850 and the Pentax Q both have 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 GX850 and the Pentax Q write their files to SDXC cards. The GX850 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the Pentax Q cannot take advantage of Ultra High Speed SD 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-GX850 and Pentax Q and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
It is notable that the GX850 offers wifi support, while the Pentax Q does not. Wifi can be a very convenient means to transfer image data to an off-camera location.
The GX850 is a recent model that features in the current product line-up of Panasonic. In contrast, the Pentax Q has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the Pentax Q was succeeded 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? Which of the two cameras – the Panasonic GX850 or the Pentax Q – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.
Reasons to prefer the Panasonic Lumix DMC-GX850:
- More detail: Offers more megapixels (15.8 vs 12MP) with a 15% higher linear resolution.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Better image quality: Scores substantially higher (26 points) in the DXO overall assessment.
- Richer colors: Generates images with noticeably better colors (3 bits more color depth).
- More dynamic range: Captures a larger spectrum of light and dark details (2.2 EV of extra DR).
- Better low-light sensitivity: Requires less light for good images (1.6 stops ISO advantage).
- Better video: Provides higher definition movie capture (4K/30p vs 1080/30p).
- More detailed LCD: Has a higher resolution rear screen (1040k vs 460k dots).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster burst: Shoots at higher frequency (10 vs 1.5 flaps/sec) to capture the decisive moment.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
- More affordable: Was introduced into a lower priced segment (15 percent cheaper at launch).
- More modern: Reflects 5 years and 6 months of technical progress since the Pentax Q launch.
Arguments in favor of the Pentax Q:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- More framing options: Can be equipped with a hotshoe-mounted accessory-viewfinder.
- Faster shutter: Has higher mechanical shutter speed (1/2000s vs 1/500s) to freeze action.
- More compact: Is smaller (98x57mm vs 107x65mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 89g or 33 percent) and is thus easier to take along.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
- More heavily discounted: Has been around for much longer (launched in June 2011).
If the count of individual advantages (bullet points above) is taken as a guide, the GX850 is the clear winner of the match-up (17 : 8 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. 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 GX850 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 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 GX850 or the Pentax Q 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 expert reviews are important. 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.
|Panasonic GX850||+||76/100||4.5/5||4/5||4.5/5||Jan 2017||549|
|Pentax Q||..||..||4/5||3.5/5||3.5/5||Jun 2011||649|
|Olympus E-PL5||+ +||..||4.5/5||4.5/5||4.5/5||Sep 2012||599|
|Olympus E-PM2||..||77/100||5/5||4.5/5||4.5/5||Sep 2012||499|
|Olympus XZ-2||+||..||4.5/5||4/5||4.5/5||Sep 2012||599|
|Olympus E-PL2||83/100||71/100||4.5/5||4.5/5||4.5/5||Jan 2011||599|
|Olympus E-PL3||+ +||72/100||4.5/5||..||4/5||Jun 2011||599|
|Olympus E-PL1||86/100||69/100||4/5||4.5/5||4.5/5||Feb 2010||599|
|Olympus E-620||88/100||72/100||4.5/5||o||5/5||Feb 2009||699|
|Panasonic GF7||+||..||4.5/5||4.5/5||4.5/5||Jan 2015||499|
|Panasonic G6||+ +||..||5/5||..||4.5/5||Apr 2013||599|
|Panasonic GF6||+ +||..||4.5/5||..||4.5/5||Apr 2013||499|
|Panasonic G5||+ +||..||4.5/5||4.5/5||4.5/5||Jul 2012||599|
|Panasonic GF5||..||..||4.5/5||4/5||4.5/5||Apr 2012||499|
|Panasonic G3||+ +||75/100||4.5/5||4.5/5||5/5||May 2011||599|
|Panasonic GF3||82/100||71/100||4.5/5||4.5/5||4/5||Jun 2011||549|
|Panasonic GX1||+||77/100||4.5/5||4.5/5||4.5/5||Nov 2011||699|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
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.
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.
- Canon T100 vs Panasonic GX850
- Canon T7i vs Pentax Q
- Fujifilm X-T2 vs Panasonic GX850
- Leica C-LUX vs Pentax Q
- Nikon D2H vs Pentax Q
- Nikon D3 vs Pentax Q
- Olympus E-PL5 vs Panasonic GX850
- Panasonic GX850 vs Pentax K-70
- Panasonic GX850 vs Sony RX10 III
- Panasonic ZS200 vs Pentax Q
- Pentax Q vs Sony A6000
- Pentax Q vs Sony RX0 II
Specifications: Panasonic GX850 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 GX850||Pentax Q|
|Camera Type||Mirrorless system camera||Mirrorless system camera|
|Camera Lens||Micro Four Thirds lenses||Pentax Q mount lenses|
|Launch Date||January 2017||June 2011|
|Launch Price||USD 549||USD 649|
|Sensor Specs||Panasonic GX850||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||15.8 Megapixels||12 Megapixels|
|Image Resolution||4592 x 3448 pixels||4000 x 3000 pixels|
|Pixel Pitch||3.77 μm||1.53 μm|
|Pixel Density||7.04 MP/cm2||42.74 MP/cm2|
|Moiré control||no AA filter||Anti-Alias filter|
|Movie Capability||4K/30p Video||1080/30p Video|
|ISO Setting||200 - 25,600 ISO||125 - 6,400 ISO|
|ISO Boost||100 - 25,600 ISO||no Enhancement|
|DXO Sensor Quality (score)||73||47|
|DXO Color Depth (bits)||23.2||20.2|
|DXO Dynamic Range (EV)||13.3||11.1|
|DXO Low Light (ISO)||586||189|
|Screen Specs||Panasonic GX850||Pentax Q|
|Viewfinder Type||no viewfinder||Viewfinder optional|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||1040k dots||460k dots|
|LCD Attachment||Tilting screen||Fixed screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Panasonic GX850||Pentax Q|
|Focus System||Contrast-detect AF||Contrast-detect AF|
|Manual Focusing Aid||Focus Peaking||no Peaking Feature|
|Continuous Shooting||10 shutter flaps/s||1.5 shutter flaps/s|
|Electronic Shutter||up to 1/16000s||no E-Shutter|
|Time-Lapse Photography||Intervalometer built-in||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||UHS-I||no|
|Connectivity Specs||Panasonic GX850||Pentax Q|
|External Flash||no Hotshoe||Hotshoe|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||micro HDMI||mini HDMI|
|Wifi Support||Wifi built-in||no Wifi|
|Body Specs||Panasonic GX850||Pentax Q|
|Battery Life (CIPA)||210 shots per charge||230 shots per charge|
107 x 65 x 33 mm
(4.2 x 2.6 x 1.3 in)
98 x 57 x 31 mm
(3.9 x 2.2 x 1.2 in)
|Camera Weight||269 g (9.5 oz)||180 g (6.3 oz)|
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