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Canon 20D versus Panasonic GX80

The Canon EOS 20D and the Panasonic Lumix DMC-GX80 (labelled Panasonic GX85 in some countries) are two digital cameras that were revealed to the public, respectively, in August 2004 and April 2016. The 20D is a DSLR, while the GX80 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (20D) and a Four Thirds (GX80) sensor. The Canon has a resolution of 8.2 megapixel, whereas the Panasonic 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: Canon 20D vs Panasonic GX80

An illustration of the physical size and weight of the Canon 20D and the Panasonic GX80 is provided in the side-by-side display below. 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 measures 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 – the 20D – represents 100 percent across all the size and weight measures).

Compare Canon 20D vs Panasonic GX80
Compare 20D versus GX80 top
Compare 20D and GX80 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic GX80 is considerably smaller (43 percent) than the Canon 20D. Moreover, the GX80 is substantially lighter (45 percent) than the 20D. In this context, it is worth noting that neither the 20D nor the GX80 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. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can find an overview of optics for the two cameras in the Canon EF Lens Catalog (20D) and the Micro Four Thirds Lens Catalog (GX80). Mirrorless cameras, such as the GX80, have moreover the advantage that they can use many lenses from other systems via adapters, as they have a relatively short flange to focal plane distance.

Concerning battery life, the 20D gets 700 shots out of its BP-511A battery, while the GX80 can take 290 images on a single charge of its DMW-BLG10 power pack.

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.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
Canon 20D» 5.7 in 4.2 in 2.8 in 27.2 oz 700 n Aug 2004 1,499- i Canon 20D
Panasonic GX80« 4.8 in 2.8 in 1.7 in 15.0 oz 290 n Apr 2016 799 i i Panasonic GX80
Canon 7D II« » 5.9 in 4.4 in 3.1 in 32.1 oz 670 Y Sep 2014 1,799 i i Canon 7D II
Canon 60D« » 5.7 in 4.2 in 3.1 in 26.6 oz 1100 Y Aug 2010 1,399- i Canon 60D
Canon 7D« » 5.8 in 4.4 in 2.9 in 30.3 oz 800 Y Sep 2009 1,699- i Canon 7D
Canon 50D« » 5.7 in 4.3 in 2.9 in 29.0 oz 800 Y Aug 2008 1,299- i Canon 50D
Canon 40D« » 5.7 in 4.3 in 2.9 in 29.0 oz 750 n Aug 2007 1,299- i Canon 40D
Canon 30D« » 5.7 in 4.2 in 2.9 in 27.7 oz 750 n Feb 2006 1,399- i Canon 30D
Canon XT« » 5.0 in 3.7 in 2.5 in 19.0 oz 400 n Feb 2005 899- i Canon XT
Canon 10D« » 5.9 in 4.2 in 3.0 in 30.0 oz 500 n Feb 2003 1,999- i Canon 10D
Canon Rebel« » 5.6 in 3.9 in 2.8 in 22.9 oz 400 n Aug 2003 899- i Canon Rebel
Nikon D200« » 5.8 in 4.4 in 2.9 in 32.5 oz 400 Y Nov 2005 1,699- i Nikon D200
Olympus E-M10 II« » 4.7 in 3.3 in 1.9 in 13.8 oz 320 n Aug 2015 799- i Olympus E-M10 II
Olympus E-M5 II« » 4.9 in 3.3 in 1.8 in 16.5 oz 310 Y Feb 2015 1,099 i i Olympus E-M5 II
Panasonic GX9« » 4.9 in 2.8 in 1.9 in 14.4 oz 260 n Feb 2018 849 i i Panasonic GX9
Panasonic G80« » 5.0 in 3.5 in 2.9 in 17.8 oz 330 Y Sep 2016 899 i i Panasonic G80
Panasonic GX7« » 4.8 in 2.8 in 2.2 in 14.2 oz 350 n Aug 2013 999- i Panasonic GX7

Any camera purchase will naturally be influenced heavily by the price. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The GX80 was launched at a markedly lower price (by 47 percent) than the 20D, which puts it into a different market segment. 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

 

Sensor comparison: Canon 20D vs Panasonic GX80

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 Canon 20D features an APS-C sensor and the Panasonic GX80 a Four Thirds sensor. The sensor area in the GX80 is 33 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 2.0. The sensor in the 20D has a native 3:2 aspect ratio, while the one in the GX80 offers a 4:3 aspect.

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors.

Canon 20D and Panasonic GX80 sensor measures

Despite having a smaller sensor, the GX80 offers a higher resolution of 15.8 megapixel, compared with 8.2 MP of the 20D. This megapixel advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.77μm versus 6.42μm for the 20D). However, it should be noted that the GX80 is much more recent (by 11 years and 7 months) than the 20D, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently. Coming back to sensor resolution, it should be mentioned that the GX80 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

20D versus GX80 MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 consideration, the GX80 has a markedly higher DXO score than the 20D (overall score 9 points higher), which will translate into better image quality. The advantage is based on 1 bits higher color depth, 1.6 EV in additional dynamic range, 0.1 stops of reduced low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
Canon 20D» APS-C 8.2 3504 2336-21.911.072162Canon 20D
Panasonic GX80« Four Thirds 15.8 4592 34484K/30p22.912.666271Panasonic GX80
Canon 7D II« » APS-C 20.0 5472 36481080/60p22.411.8108270Canon 7D II
Canon 60D« » APS-C 17.9 5184 34561080/30p22.211.581366Canon 60D
Canon 7D« » APS-C 17.9 5184 34561080/30p22.011.785466Canon 7D
Canon 50D« » APS-C 15.1 4752 3168-21.811.469663Canon 50D
Canon 40D« » APS-C 10.1 3888 2592-22.111.370364Canon 40D
Canon 30D« » APS-C 8.2 3504 2336-21.510.873659Canon 30D
Canon XT« » APS-C 8.0 3456 2304-21.810.863760Canon XT
Canon 10D« » APS-C 6.3 3072 2048-21.110.957157Canon 10D
Canon Rebel« » APS-C 6.3 3072 2048-21.010.854455Canon Rebel
Nikon D200« » APS-C 10.0 3872 2592-22.311.558364Nikon D200
Olympus E-M10 II« » Four Thirds 15.9 4608 34561080/60p23.112.584273Olympus E-M10 II
Olympus E-M5 II« » Four Thirds 15.9 4608 34561080/60p23.012.584273Olympus E-M5 II
Panasonic GX9« » Four Thirds 20.2 5184 38884K/30p----Panasonic GX9
Panasonic G80« » Four Thirds 15.8 4592 34484K/30p22.812.565671Panasonic G80
Panasonic GX7« » Four Thirds 15.8 4592 34481080/60p22.612.271870Panasonic GX7

Many modern cameras are not only capable of taking still images, but can also record movies. The GX80 indeed provides for movie recording, while the 20D does not. The highest resolution format that the GX80 can use is 4K/30p.

 

Feature comparison: Canon 20D vs Panasonic GX80

Beyond body and sensor, cameras can and do differ across a range of features. For example, the GX80 has an electronic viewfinder (2765k dots), while the 20D has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The following table reports on some other key feature differences and similarities of the Canon 20D, the Panasonic GX80, and comparable cameras. The full specs-sheets can be found in the camera manual or, for example, in the dpreview camera hub.

Core Features
  Camera
Model
Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec))
Build-in
Flash
(yes/no)
Build-in
Image
Stab
Camera
Model
Canon 20D»optical Y 1.8 118 fixed n 8000 5.0 Y n Canon 20D
Panasonic GX80«2765 n 3.0 1040 tilting Y 4000 8.0 Y Y Panasonic GX80
Canon 7D II« »optical Y 3.0 1040 fixed n 8000 10.0 Y n Canon 7D II
Canon 60D« »optical Y 3.0 1040 swivel n 8000 5.3 Y n Canon 60D
Canon 7D« »optical Y 3.0 920 fixed n 8000 8.0 Y n Canon 7D
Canon 50D« »optical Y 3.0 920 fixed n 8000 6.3 Y n Canon 50D
Canon 40D« »optical Y 3.0 230 fixed n 8000 6.5 Y n Canon 40D
Canon 30D« »optical Y 2.5 230 fixed n 8000 5.0 Y n Canon 30D
Canon XT« »optical n 1.8 115 fixed n 4000 3.0 Y n Canon XT
Canon 10D« »optical Y 1.8 118 fixed n 4000 3.0 Y n Canon 10D
Canon Rebel« »optical n 1.8 118 fixed n 4000 2.5 Y n Canon Rebel
Nikon D200« »optical Y 2.5 230 fixed n 8000 5.0 Y n Nikon D200
Olympus E-M10 II« »2360 n 3.0 1040 tilting Y 4000 8.0 Y Y Olympus E-M10 II
Olympus E-M5 II« »2360 n 3.0 1037 swivel Y 8000 10.0 n Y Olympus E-M5 II
Panasonic GX9« »2760 n 3.0 1240 tilting Y 4000 9.0 Y Y Panasonic GX9
Panasonic G80« »2360 n 3.0 1040 swivel Y 4000 9.0 Y Y Panasonic G80
Panasonic GX7« »2760 n 3.0 1040 tilting Y 8000 5.0 Y Y Panasonic GX7

The reported shutter speed and shutter burst refer to the use of the mechanical shutter. In addition, the GX80 features an electronic shutter, which makes silent shooting and higher burst speeds possible. However, this mode is less suitable for photographing moving objects (rolling shutter) or shooting under artificial light sources (flickering).

The GX80 is a current model that online retailers, such as amazon, will have in stock. In contrast, the 20D has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the 20D was succeeded by the Canon 30D.

Review summary: Canon 20D vs Panasonic GX80

So how do things add up? Which of the two cameras – the Canon 20D or the Panasonic GX80 – has the upper hand? A synthesis of the relative strong points of each of the models is listed below.

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Arguments in favor of the Canon EOS 20D:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Easier setting verification: Has an LCD display on top to control shooting parameters.
  • Faster shutter: Has higher mechanical shutter speed (8000/sec vs 4000/sec) to freeze action.
  • Longer lasting: Can take more shots (700 versus 290) on a single battery charge.
  • More heavily discounted: Has been available for much longer (launched in August 2004).

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Reasons to prefer the Panasonic Lumix DMC-GX80:

  • More detail: Has more megapixels (15.8 vs 8.2MP), which boosts linear resolution by 36%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Scores markedly higher (9 points) in the DXO overall evaluation.
  • More dynamic range: Captures a broader range of light and dark details (1.6 EV of extra DR).
  • Broader imaging potential: Can capture not only stills but also 4K/30p video.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • Larger screen: Has a bigger rear LCD (3.0" vs 1.8") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1040k vs 118k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • Faster burst: Shoots at higher frequency (8 vs 5 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • More compact: Is smaller (122x71mm vs 144x106mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 344g or 45 percent) and is thus easier to take along.
  • More legacy lens friendly: Can use many non-native lenses via adapters.
  • Sharper images: Has stabilization technology build-in to reduce the impact of hand-shake.
  • More affordable: Was introduced into a lower priced category (47 percent cheaper at launch).
  • More modern: Reflects 11 years and 7 months of technical progress since the 20D launch.

If the count of individual advantages (bullet points above) is taken as a guide, the GX80 is the clear winner of the contest (18 : 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.

20D 06:18 GX80

In any case, while the specs-based evaluation of cameras is instructive in revealing their potential as photographic tools, it remains partial and cannot reveal, for example, the handling experience and imaging performance when actually working with the 20D or the GX80. 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 table relays the overall verdicts of several of the most popular camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). You can find the full text of the reviews by clicking on the site logo in the table header.

Review Scores
  Camera
Model
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
Canon 20D»-HiRec-rev- Aug 2004 1,499- i Canon 20D
Panasonic GX80«HiRec82/1005/54.5/55/5 Apr 2016 799 i i Panasonic GX80
Canon 7D II« »Rec84/1004/55/54.5/5 Sep 2014 1,799 i i Canon 7D II
Canon 60D« »Rec79/1004/55/54.5/5 Aug 2010 1,399- i Canon 60D
Canon 7D« »HiRec84/1004.5/55/54.5/5 Sep 2009 1,699- i Canon 7D
Canon 50D« »HiRecHiRec4.5/55/54.5/5 Aug 2008 1,299- i Canon 50D
Canon 40D« »HiRecHiRec4.5/5rev4.5/5 Aug 2007 1,299- i Canon 40D
Canon 30D« »HiRecHiRecrevrev- Feb 2006 1,399- i Canon 30D
Canon XT« »80/100HiRecrevrev- Feb 2005 899- i Canon XT
Canon 10D« »-HiRec-rev- Feb 2003 1,999- i Canon 10D
Canon Rebel« »-HiRec-rev- Aug 2003 899- i Canon Rebel
Nikon D200« »HiRecHiRecrev5/5- Nov 2005 1,699- i Nikon D200
Olympus E-M10 II« »HiRec80/1005/55/55/5 Aug 2015 799- i Olympus E-M10 II
Olympus E-M5 II« »HiRec81/1005/54.5/55/5 Feb 2015 1,099 i i Olympus E-M5 II
Panasonic GX9« »Rec-4.5/5-4.5/5 Feb 2018 849 i i Panasonic GX9
Panasonic G80« »HiRec84/1005/54.5/54.5/5 Sep 2016 899 i i Panasonic G80
Panasonic GX7« »Rec79/1005/54.5/55/5 Aug 2013 999- i Panasonic GX7

Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

 

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. An an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool. If you cannot find the camera you are interested in, please contact me, and I will try to locate and add the respective data to the application.

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