Panasonic GX85 versus Olympus E-M5
The Panasonic Lumix DMC-GX85 (called Panasonic GX80 in some regions) and the Olympus OM-D E-M5 are two digital cameras that were revealed to the public, respectively, in April 2016 and February 2012. Both the GX85 and the E-M5 are mirrorless interchangeable lens cameras that are equipped with a Four Thirds sensor. The Panasonic has a resolution of 15.8 megapixel, whereas the Olympus provides 15.9 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 GX85 vs Olympus E-M5
The physical size and weight of the Panasonic GX85 and the Olympus E-M5 are illustrated in the side-by-side display below. Three consecutive perspectives from the front, the top, and the back are presented. All width, height and depth dimensions 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 GX85 – represents the basis or 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 Olympus E-M5 is notably larger (25 percent) than the Panasonic GX85. However, the E-M5 is slightly lighter (0 percent) than the GX85. It is noteworthy in this context that the E-M5 is splash and dust-proof, 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 GX85»||4.8 in||2.8 in||1.7 in||15.0 oz||290||n||Apr 2016||799|
|Olympus E-M5«||4.8 in||3.5 in||1.7 in||15.0 oz||360||Y||Feb 2012||1,299||-|
|Olympus E-M10 II« »||4.7 in||3.3 in||1.9 in||13.8 oz||320||n||Aug 2015||799||-|
|Olympus E-M5 II« »||4.9 in||3.3 in||1.8 in||16.5 oz||310||Y||Feb 2015||1,099|
|Olympus E-M10« »||4.7 in||3.2 in||1.8 in||14.0 oz||320||n||Jan 2014||699||-|
|Olympus E-M1« »||5.1 in||3.7 in||2.5 in||17.5 oz||350||Y||Sep 2013||1,399||-|
|Olympus E-P5« »||4.8 in||2.7 in||1.5 in||14.8 oz||330||n||May 2013||999||-|
|Panasonic GX9« »||4.9 in||2.8 in||1.9 in||14.4 oz||260||n||Feb 2018||849|
|Panasonic G85« »||5.0 in||3.5 in||2.9 in||17.8 oz||330||Y||Sep 2016||899|
|Panasonic ZS100« »||4.4 in||2.6 in||1.7 in||11.0 oz||300||n||Jan 2016||699||-|
|Panasonic G7« »||4.9 in||3.4 in||3.0 in||14.5 oz||350||n||May 2015||649||-|
|Panasonic GM5« »||3.9 in||2.4 in||1.4 in||7.4 oz||220||n||Sep 2014||749||-|
|Panasonic GM1« »||3.9 in||2.2 in||1.2 in||7.2 oz||230||n||Oct 2013||749||-|
|Panasonic GX7« »||4.8 in||2.8 in||2.2 in||14.2 oz||350||n||Aug 2013||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 38 percent) than the E-M5, 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 GX85 vs Olympus E-M5
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 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 E-M5 offers a slightly higher resolution of 15.9 megapixel, compared with 15.8 MP of the GX85. This megapixel advantage translates into a 0.3 percent gain in linear resolution. On the other hand, these sensor specs imply that the E-M5 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 GX85). Moreover, it should be noted, that the GX85 is much more recent (by 4 years and 1 month) than the E-M5, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of individual pixels. Coming back to sensor resolution, it should be mentioned that the GX85 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
Consistent information on actual sensor performance is available from DXO Mark for most cameras. 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 Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar image quality. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
|Panasonic GX85»||Four Thirds||15.8||4592||3448||4K/30p||22.9||12.6||662||71|
|Olympus E-M5«||Four Thirds||15.9||4608||3456||1080/60i||22.8||12.3||826||71|
|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|
|Olympus E-M10« »||Four Thirds||15.9||4608||3456||1080/30p||22.8||12.3||884||72|
|Olympus E-M1« »||Four Thirds||15.9||4608||3456||1080/30p||23.0||12.7||757||73|
|Olympus E-P5« »||Four Thirds||15.9||4608||3456||1080/30p||22.8||12.4||895||72|
|Panasonic GX9« »||Four Thirds||20.2||5184||3888||4K/30p||-||-||-||-|
|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 G7« »||Four Thirds||15.8||4592||3448||4K/30p||-||-||-||-|
|Panasonic GM5« »||Four Thirds||15.8||4592||3448||1080/60p||22.1||11.7||721||66|
|Panasonic GM1« »||Four Thirds||15.8||4592||3448||1080/60i||22.3||11.7||660||66|
|Panasonic GX7« »||Four Thirds||15.8||4592||3448||1080/60p||22.6||12.2||718||70|
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 GX85 provides a higher video resolution than the E-M5. It can shoot video footage at 4K/30p, while the Olympus is limited to 1080/60i.
Feature comparison: Panasonic GX85 vs Olympus E-M5
Apart from body and sensor, cameras can and do differ across a variety of features. The two cameras under consideration are similar with respect to both having an electronic viewfinder. However, the one in the GX85 offers a substantially higher resolution than the one in the E-M5 (2765k vs 1440k dots). The adjacent table lists some of the other core features of the Panasonic GX85 and Olympus E-M5 along with similar information for a selection of comparators. If needed, the dpreview camera hub, for example, contains further detail on the cameras' specs.
|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|
|Olympus E-M10« »||1440||n||3.0||1037||tilting||Y||4000||8.0||Y||Y|
|Olympus E-M1« »||2360||n||3.0||1037||tilting||Y||8000||10.0||n||Y|
|Olympus E-P5« »||-||n||3.0||1037||tilting||Y||8000||9.0||Y||Y|
|Panasonic GX9« »||2760||n||3.0||1240||tilting||Y||4000||9.0||Y||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 G7« »||2360||n||3.0||1040||swivel||Y||4000||7.0||Y||n|
|Panasonic GM5« »||1166||n||3.0||921||fixed||Y||500||5.8||n||n|
|Panasonic GM1« »||-||n||3.0||1036||fixed||Y||500||5.0||Y||n|
|Panasonic GX7« »||2760||n||3.0||1040||tilting||Y||8000||5.0||Y||Y|
The GX85 is a current model that online retailers, such as amazon, will have in stock. In contrast, the E-M5 has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the E-M5 was succeeded by the Olympus E-M5 II.
Review summary: Panasonic GX85 vs Olympus E-M5
So how do things add up? Is there a clear favorite between the Panasonic GX85 and the Olympus E-M5? Below is a summary of the relative strengths of each of the two contestants.
Arguments in favor of the Panasonic Lumix DMC-GX85:
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Better video: Provides higher definition movie capture (4K/30p vs 1080/60i).
- More detailed viewfinder: Has higher resolution electronic viewfinder (2765k vs 1440k dots).
- More detailed LCD: Has a higher resolution rear screen (1040k vs 610k dots).
- More compact: Is smaller (122x71mm vs 122x89mm) and thus needs less room in the bag.
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- More affordable: Was introduced into a lower priced category (38 percent cheaper at launch).
- More modern: Reflects 4 years and 1 month of technical progress since the E-M5 launch.
Advantages of the Olympus OM-D E-M5:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Faster burst: Shoots at higher frequency (9 vs 8 flaps/sec) to capture the decisive moment.
- Longer lasting: Gets more shots (360 versus 290) out of a single battery charge.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- More heavily discounted: Has been around for much longer (launched in February 2012).
If the count of individual advantages (bullet points above) is taken as a guide, the GX85 emerges as the winner of the contest (8 : 5 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.
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 GX85 or the E-M5 handle or 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 hands-on reviews by experts are important. 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 full reviews are available by clicking on the site logo in the table header.
|Panasonic GX85»||HiRec||82/100||5/5||4.5/5||5/5||Apr 2016||799|
|Olympus E-M5«||HiRec||80/100||4.5/5||5/5||5/5||Feb 2012||1,299||-|
|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|
|Olympus E-M10« »||-||80/100||5/5||4.5/5||5/5||Jan 2014||699||-|
|Olympus E-M1« »||HiRec||84/100||4.5/5||4.5/5||4.5/5||Sep 2013||1,399||-|
|Olympus E-P5« »||HiRec||78/100||4.5/5||4.5/5||5/5||May 2013||999||-|
|Panasonic GX9« »||Rec||-||4.5/5||-||4.5/5||Feb 2018||849|
|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 G7« »||HiRec||80/100||5/5||4.5/5||4.5/5||May 2015||649||-|
|Panasonic GM5« »||Rec||77/100||5/5||5/5||4.5/5||Sep 2014||749||-|
|Panasonic GM1« »||Rec||78/100||5/5||4.5/5||4.5/5||Oct 2013||749||-|
|Panasonic GX7« »||Rec||79/100||5/5||4.5/5||5/5||Aug 2013||999||-|
Care should be taken when interpreting the review scores above, though. The ratings are only valid when refering to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.
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