Panasonic G9 versus Panasonic GX85
The Panasonic Lumix DC-G9 and the Panasonic Lumix DMC-GX85 (labelled Panasonic GX80 in some countries) are two digital cameras that were revealed to the public, respectively, in November 2017 and April 2016. Both the G9 and the GX85 are mirrorless interchangeable lens cameras that are equipped with a Four Thirds sensor. The G9 has a resolution of 20.2 megapixel, whereas the GX85 provides 15.8 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 G9 vs Panasonic GX85
An illustration of the physical size and weight of the Panasonic G9 and the Panasonic GX85 is provided in the side-by-side display below. Three consecutive perspectives from the front, the top, and the back are presented. 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 side – the G9 – represents the basis for the calculations 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 GX85 is considerably smaller (35 percent) than the Panasonic G9. Moreover, the GX85 is substantially lighter (35 percent) than the G9. It is worth mentioning in this context that the G9 is splash and dust resistant, while the GX85 does not feature any corresponding weather-sealing.
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 G9»||137 mm||97 mm||92 mm||658 g||400||Y||Nov 2017||1,699|
|Panasonic GX85«||122 mm||71 mm||44 mm||426 g||290||n||Apr 2016||799|
|Fujifilm X-H1« »||140 mm||97 mm||86 mm||673 g||310||Y||Feb 2018||1,899|
|Olympus E-M1 II« »||134 mm||91 mm||67 mm||574 g||440||Y||Sep 2016||1,999|
|Olympus E-M10 II« »||120 mm||83 mm||47 mm||390 g||320||n||Aug 2015||799||-|
|Olympus E-M5 II« »||124 mm||85 mm||45 mm||469 g||310||Y||Feb 2015||1,099|
|Panasonic GH5s« »||139 mm||98 mm||87 mm||660 g||440||Y||Jan 2018||2,499|
|Panasonic GX9« »||124 mm||72 mm||47 mm||407 g||260||n||Feb 2018||849|
|Panasonic GH5« »||139 mm||98 mm||87 mm||725 g||410||Y||Jan 2017||1,999|
|Panasonic G85« »||128 mm||89 mm||74 mm||505 g||330||Y||Sep 2016||899|
|Panasonic ZS100« »||111 mm||65 mm||44 mm||312 g||300||n||Jan 2016||699||-|
|Panasonic GX8« »||133 mm||78 mm||63 mm||487 g||330||Y||Jul 2015||1,199||-|
|Panasonic GH4« »||133 mm||93 mm||84 mm||560 g||500||Y||Feb 2014||1,499||-|
|Sony A7 III« »||127 mm||96 mm||74 mm||650 g||610||Y||Feb 2018||1,999|
|Sony A9« »||127 mm||96 mm||63 mm||673 g||650||Y||Apr 2017||4,499|
|Sony A7 II« »||127 mm||96 mm||60 mm||599 g||350||Y||Nov 2014||1,999||-|
|Sony A77« »||143 mm||104 mm||81 mm||732 g||470||Y||Aug 2011||1,999||-|
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 GX85 was launched at a markedly lower price (by 53 percent) than the G9, 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 G9 vs Panasonic GX85
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.
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 G9 offers a higher resolution of 20.2 megapixel, compared with 15.8 MP of the GX85. This megapixel advantage translates into a 13 percent gain in linear resolution. On the other hand, these sensor specs imply that the G9 has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.34μm versus 3.77μm for the GX85). In this context, it should be noted, however, that the G9 is a somewhat more recent model (by 1 year and 7 months) than the GX85, and its sensor might have benefitted from technological advances during this time that at least partly compensate for the smaller pixel size. Coming back to sensor resolution, it should be mentioned that neither of the two cameras has an anti-alias filter installed, so they are able to capture all the detail the sensor resolves.
Unlike the GX85, the G9 has the capacity to capture high quality composite images (80.6MP) by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).
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. 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 G9»||Four Thirds||20.2||5184||3888||4K/60p||-||-||-||-|
|Panasonic GX85«||Four Thirds||15.8||4592||3448||4K/30p||22.9||12.6||662||71|
|Fujifilm X-H1« »||APS-C||24.0||6000||4000||4K/30p||-||-||-||-|
|Olympus E-M1 II« »||Four Thirds||20.2||5184||3888||4K/30p||23.7||12.8||1312||80|
|Olympus E-M10 II« »||Four Thirds||15.9||4608||3456||1080/60p||23.1||12.5||842||73|
|Olympus E-M5 II« »||Four Thirds||15.9||4608||3456||1080/60p||23.0||12.5||842||73|
|Panasonic GH5s« »||Four Thirds||9.9||3680||2700||4K/60p||-||-||-||-|
|Panasonic GX9« »||Four Thirds||20.2||5184||3888||4K/30p||-||-||-||-|
|Panasonic GH5« »||Four Thirds||20.2||5184||3888||4K/60p||23.9||13.0||807||77|
|Panasonic G85« »||Four Thirds||15.8||4592||3448||4K/30p||22.8||12.5||656||71|
|Panasonic ZS100« »||1-inch||20.0||5472||3648||4K/30p||22.8||12.5||559||70|
|Panasonic GX8« »||Four Thirds||20.2||5184||3888||4K/30p||23.5||12.6||806||75|
|Panasonic GH4« »||Four Thirds||15.9||4608||3456||4K/30p||23.2||12.8||791||74|
|Sony A7 III« »||Full Frame||24.0||6000||4000||4K/30p||25.0||14.7||3730||96|
|Sony A9« »||Full Frame||24.0||6000||4000||4K/30p||24.9||13.3||3517||92|
|Sony A7 II« »||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90|
|Sony A77« »||APS-C||24.0||6000||4000||1080/60p||24.0||13.2||801||78|
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 G9 provides a higher frame rate than the GX85. It can shoot video footage at 4K/60p, while the GX85 is limited to 4K/30p.
Feature comparison: Panasonic G9 vs Panasonic GX85
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 G9 offers a substantially higher resolution than the one in the GX85 (3680k vs 2765k dots). The table below summarizes some of the other core capabilities of the Panasonic G9 and Panasonic GX85 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.
|Fujifilm X-H1« »||3690||Y||3.0||1040||full-flex||Y||8000||14.0||n||Y|
|Olympus E-M1 II« »||2360||n||3.0||1037||swivel||Y||8000||18.0||n||Y|
|Olympus E-M10 II« »||2360||n||3.0||1040||tilting||Y||4000||8.0||Y||Y|
|Olympus E-M5 II« »||2360||n||3.0||1037||swivel||Y||8000||10.0||n||Y|
|Panasonic GH5s« »||3680||n||3.2||1620||swivel||Y||8000||12.0||n||n|
|Panasonic GX9« »||2760||n||3.0||1240||tilting||Y||4000||9.0||Y||Y|
|Panasonic GH5« »||3680||n||3.2||1620||swivel||Y||8000||12.0||n||Y|
|Panasonic G85« »||2360||n||3.0||1040||swivel||Y||4000||9.0||Y||Y|
|Panasonic ZS100« »||1166||n||3.0||1040||fixed||Y||2000||10.0||Y||Y|
|Panasonic GX8« »||2360||n||3.0||1040||swivel||Y||8000||10.0||n||Y|
|Panasonic GH4« »||2359||n||3.0||1036||swivel||Y||8000||12.0||Y||n|
|Sony A7 III« »||2359||n||3.0||922||tilting||Y||8000||10.0||n||Y|
|Sony A9« »||3686||n||3.0||1440||tilting||Y||8000||20.0||n||Y|
|Sony A7 II« »||2400||n||3.0||1230||tilting||n||8000||5.0||n||Y|
|Sony A77« »||2359||Y||3.0||921||full-flex||n||8000||12.0||Y||Y|
Both the G9 and the GX85 are current models that good online retailers will have in stock. You can check the latest prices, for example, at amazon. The GX85 replaced the earlier Panasonic GX7, while the G9 followed on from the Panasonic G85.
Review summary: Panasonic G9 vs Panasonic GX85
So how do things add up? Is there a clear favorite between the Panasonic G9 and the Panasonic GX85? A synthesis of the relative strong points of each of the models is listed below.
Advantages of the Panasonic Lumix DC-G9:
- More detail: Offers more megapixels (20.2 vs 15.8MP) with a 13% higher linear resolution.
- High quality composites: Can combine several shots after pixel-shifting its sensor.
- Better video: Provides higher movie framerates (4K/60p versus 4K/30p).
- More detailed viewfinder: Has higher resolution electronic viewfinder (3680k vs 2765k dots).
- Easier setting verification: Has an LCD display on top to control shooting parameters.
- More flexible LCD: Has swivel screen for odd-angle shots in portrait or landscape orientation.
- Faster shutter: Has higher mechanical shutter speed (8000/sec vs 4000/sec) to freeze action.
- Faster burst: Shoots at higher frequency (20 vs 8 flaps/sec) to capture the decisive moment.
- Longer lasting: Can take more shots (400 versus 290) on a single battery charge.
- Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
- More modern: Is somewhat more recent (announced 1 year and 7 months after the GX85).
Reasons to prefer the Panasonic Lumix DMC-GX85:
- More compact: Is smaller (122x71mm vs 137x97mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 232g or 35 percent) and is thus easier to take along.
- Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
- More affordable: Was introduced into a lower priced category (53 percent cheaper at launch).
- More heavily discounted: Has been on the market for longer (launched in April 2016).
If the count of relative strengths (bullet points above) is taken as a measure, the G9 is the clear winner of the match-up (11 : 5 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 technical specifications can provide a useful overview of the capabilities of different cameras, it says nothing about, for example, the handling, responsiveness, and overall imaging quality of the G9 and the GX85 in practical situations. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased. This is where reviews by experts come in. 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.
|Panasonic G9»||HiRec||85/100||5/5||-||5/5||Nov 2017||1,699|
|Panasonic GX85«||HiRec||82/100||5/5||4.5/5||5/5||Apr 2016||799|
|Fujifilm X-H1« »||Rec||86/100||4.5/5||-||4.5/5||Feb 2018||1,899|
|Olympus E-M1 II« »||HiRec||85/100||4.5/5||5/5||4.5/5||Sep 2016||1,999|
|Olympus E-M10 II« »||HiRec||80/100||5/5||5/5||5/5||Aug 2015||799||-|
|Olympus E-M5 II« »||HiRec||81/100||5/5||4.5/5||5/5||Feb 2015||1,099|
|Panasonic GH5s« »||-||84/100||4.5/5||-||4.5/5||Jan 2018||2,499|
|Panasonic GX9« »||Rec||-||4.5/5||-||4.5/5||Feb 2018||849|
|Panasonic GH5« »||HiRec||85/100||4.5/5||5/5||5/5||Jan 2017||1,999|
|Panasonic G85« »||HiRec||84/100||5/5||4.5/5||4.5/5||Sep 2016||899|
|Panasonic ZS100« »||HiRec||82/100||4.5/5||4/5||4.5/5||Jan 2016||699||-|
|Panasonic GX8« »||Rec||82/100||4.5/5||5/5||4.5/5||Jul 2015||1,199||-|
|Panasonic GH4« »||HiRec||85/100||5/5||5/5||5/5||Feb 2014||1,499||-|
|Sony A7 III« »||HiRec||89/100||5/5||-||5/5||Feb 2018||1,999|
|Sony A9« »||HiRec||89/100||5/5||5/5||5/5||Apr 2017||4,499|
|Sony A7 II« »||Rec||82/100||4.5/5||5/5||5/5||Nov 2014||1,999||-|
|Sony A77« »||91/100||81/100||-||4.5/5||5/5||Aug 2011||1,999||-|
The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. Thus, a score needs to be put into the context of the launch date and the launch price 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.
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