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Canon 20D vs Olympus E-M1X

The Canon EOS 20D and the Olympus OM-D E-M1X are two enthusiast cameras that were announced, respectively, in August 2004 and January 2019. The 20D is a DSLR, while the E-M1X is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (20D) and a Four Thirds (E-M1X) sensor. The Canon has a resolution of 8.2 megapixels, whereas the Olympus provides 20.2 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications
Canon 20D
versus
Olympus E-M1X
Canon 20D   Olympus E-M1X
Digital single lens reflex Mirrorless system camera
Canon EF mount lenses Micro Four Thirds lenses
8.2 MP – APS-C sensor 20.2 MP – Four Thirds sensor
no Video 4K/30p Video
ISO 100-1,600 (100 - 3,200) ISO 200-25,600
Optical viewfinder Electronic viewfinder (2360k dots)
1.8" LCD – 118k dots 3.0" LCD – 1037k dots
Fixed screen (not touch-sensitive) Swivel touchscreen
5 shutter flaps per second 18 shutter flaps per second
Lens stabilization onlyIn-body stabilization
not weather sealedWeathersealed body
700 shots per battery charge870 shots per battery charge
144 x 106 x 72 mm, 770 g 144 x 147 x 75 mm, 997 g
logo
Check 20D offers at
ebay.com
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Check E-M1X offers at
ebay.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 20D and the Olympus OM-D E-M1X? 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.

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Body comparison

The physical size and weight of the Canon 20D and the Olympus E-M1X are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All width, height and depth dimensions are rounded to the nearest millimeter.

The E-M1X can be obtained in two different colors (black, silver), while the 20D is only available in black.

Size Canon 20D vs Olympus E-M1X
Compare 20D versus E-M1X top
Comparison 20D or E-M1X rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-M1X is notably larger (39 percent) than the Canon 20D. Moreover, the E-M1X is markedly heavier (29 percent) than the 20D. It is noteworthy in this context that the E-M1X is splash and dust-proof, while the 20D 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. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can compare the optics available for the two cameras in the Canon EF Lens Catalog (20D) and the Micro Four Thirds Lens Catalog (E-M1X). Mirrorless cameras, such as the E-M1X, 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 Canon BP-511A battery, while the E-M1X can take 870 images on a single charge of its Olympus BLH-1 power pack. As can be seen in the images above, the E-M1X has a battery grip built in. This facilitates image-taking in portrait orientation and gives it additional battery power. In order to provide similar functionality for the 20D, Canon provides the BG-E2N vertical grip as an optional accessory (see here on ebay). The power pack in the E-M1X can be charged via the USB port, which can be very convenient when travelling.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

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Body Specifications
# image Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon 20D 144 mm 106 mm 72 mm 770 g 700 n Aug 2004 1,499ebay.com
2.
 
Olympus E-M1X 144 mm 147 mm 75 mm 997 g 870 Y Jan 2019 2,999ebay.com
3.
 
Canon 7D II 149 mm 112 mm 78 mm 910 g 670 Y Sep 2014 1,799ebay.com
4.
 
Canon 60D 145 mm 106 mm 79 mm 755 g 1100 Y Aug 2010 1,399ebay.com
5.
 
Canon 7D 148 mm 111 mm 74 mm 860 g 800 Y Sep 2009 1,699ebay.com
6.
 
Canon 50D 146 mm 108 mm 74 mm 822 g 800 Y Aug 2008 1,299ebay.com
7.
 
Canon 40D 146 mm 108 mm 74 mm 822 g 750 n Aug 2007 1,299ebay.com
8.
 
Canon 30D 144 mm 106 mm 74 mm 785 g 750 n Feb 2006 1,399ebay.com
9.
 
Canon XT 127 mm 94 mm 64 mm 540 g 400 n Feb 2005 899ebay.com
10.
 
Canon 10D 150 mm 107 mm 75 mm 850 g 500 n Feb 2003 1,999ebay.com
11.
 
Canon Rebel 142 mm 99 mm 72 mm 649 g 400 n Aug 2003 899ebay.com
12.
 
Nikon D200 147 mm 113 mm 74 mm 920 g 400 Y Nov 2005 1,699ebay.com
13.
 
Olympus E-M1 III 134 mm 91 mm 69 mm 580 g 420 Y Feb 2020 1,799ebay.com
14.
 
Olympus E-M5 III 125 mm 85 mm 50 mm 414 g 310 Y Oct 2019 1,199ebay.com
15.
 
Olympus E-M1 II 134 mm 91 mm 67 mm 574 g 440 Y Sep 2016 1,999ebay.com
16.
 
Panasonic S1 149 mm 110 mm 97 mm 1017 g 400 Y Feb 2019 2,499 amazon.com
17.
 
Panasonic G90 130 mm 94 mm 77 mm 536 g 290 Y Apr 2019 999ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
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The price is, of course, an important factor in any camera decision. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The 20D was launched at a markedly lower price (by 50 percent) than the E-M1X, 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

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 more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Canon 20D features an APS-C sensor and the Olympus E-M1X a Four Thirds sensor. The sensor area in the E-M1X 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 E-M1X offers a 4:3 aspect.

Canon 20D and Olympus E-M1X sensor measures

Despite having a smaller sensor, the E-M1X offers a higher resolution of 20.2 megapixels, compared with 8.2 MP of the 20D. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.34μm versus 6.42μm for the 20D). However, it should be noted that the E-M1X is much more recent (by 14 years and 5 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 E-M1X has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Olympus E-M1X implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the E-M1X for good quality output (200 dots per inch) amounts to 25.9 x 19.4 inches or 65.8 x 49.4 cm, for very good quality (250 dpi) 20.7 x 15.6 inches or 52.7 x 39.5 cm, and for excellent quality (300 dpi) 17.3 x 13 inches or 43.9 x 32.9 cm. The corresponding values for the Canon 20D are 17.5 x 11.7 inches or 44.5 x 29.7 cm for good quality, 14 x 9.3 inches or 35.6 x 23.7 cm for very good quality, and 11.7 x 7.8 inches or 29.7 x 19.8 cm for excellent quality prints.

The E-M1X has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

Unlike the 20D, the E-M1X has the capacity to capture high quality composite images (80MP) 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).

The Canon EOS 20D has a native sensitivity range from ISO 100 to ISO 1600, which can be extended to ISO 100-3200. The corresponding ISO settings for the Olympus OM-D E-M1X are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 64-25600.

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

20D versus E-M1X 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"). The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

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Sensor Characteristics
# image Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Canon 20D APS-C 8.2 3504 2336none21.911.072162
2.
 
Olympus E-M1X Four Thirds 20.2 5184 38884K/30p23.213.0125475
3.
 
Canon 7D II APS-C 20.0 5472 36481080/60p22.411.8108270
4.
 
Canon 60D APS-C 17.9 5184 34561080/30p22.211.581366
5.
 
Canon 7D APS-C 17.9 5184 34561080/30p22.011.785466
6.
 
Canon 50D APS-C 15.1 4752 3168none21.811.469663
7.
 
Canon 40D APS-C 10.1 3888 2592none22.111.370364
8.
 
Canon 30D APS-C 8.2 3504 2336none21.510.873659
9.
 
Canon XT APS-C 8.0 3456 2304none21.810.863760
10.
 
Canon 10D APS-C 6.3 3072 2048none21.110.957157
11.
 
Canon Rebel APS-C 6.3 3072 2048none21.010.854455
12.
 
Nikon D200 APS-C 10.0 3872 2592none22.311.558364
13.
 
Olympus E-M1 III Four Thirds 20.2 5184 38884K/30p23.313.1135676
14.
 
Olympus E-M5 III Four Thirds 20.2 5184 38884K/30p23.313.1132476
15.
 
Olympus E-M1 II Four Thirds 20.2 5184 38884K/30p23.712.8131280
16.
 
Panasonic S1 Full Frame 24.0 6000 40004K/60p25.214.5333395
17.
 
Panasonic G90 Four Thirds 20.2 5184 38884K/30p23.213.0127375
Note: DXO values in italics represent estimates based on sensor size and age.
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Many modern cameras cannot only take still pictures, but also record videos. The E-M1X indeed provides for movie recording, while the 20D does not. The highest resolution format that the E-M1X can use is 4K/30p.

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Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the E-M1X has an electronic viewfinder (2360k 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 viewfinder in the E-M1X offers a wider field of view (100%) than the one in the 20D (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the E-M1X has a higher magnification (0.83x vs 0.56x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Canon 20D, the Olympus E-M1X, and comparable cameras.

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Core Features
# image Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Specifications
(inch/000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Max
Shutter
Speed *
Max
Shutter
Flaps *
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Canon 20Doptical Y1.8 / 118 fixed n 1/8000s 5.0/s Y n
2.
 
Olympus E-M1X2360 n3.0 / 1037 swivel Y 1/8000s 18.0/s n Y
3.
 
Canon 7D IIoptical Y3.0 / 1040 fixed n 1/8000s 10.0/s Y n
4.
 
Canon 60Doptical Y3.0 / 1040 swivel n 1/8000s 5.3/s Y n
5.
 
Canon 7Doptical Y3.0 / 920 fixed n 1/8000s 8.0/s Y n
6.
 
Canon 50Doptical Y3.0 / 920 fixed n 1/8000s 6.3/s Y n
7.
 
Canon 40Doptical Y3.0 / 230 fixed n 1/8000s 6.5/s Y n
8.
 
Canon 30Doptical Y2.5 / 230 fixed n 1/8000s 5.0/s Y n
9.
 
Canon XToptical n1.8 / 115 fixed n 1/4000s 3.0/s Y n
10.
 
Canon 10Doptical Y1.8 / 118 fixed n 1/4000s 3.0/s Y n
11.
 
Canon Rebeloptical n1.8 / 118 fixed n 1/4000s 2.5/s Y n
12.
 
Nikon D200optical Y2.5 / 230 fixed n 1/8000s 5.0/s Y n
13.
 
Olympus E-M1 III2360 n3.0 / 1037 swivel Y 1/8000s 18.0/s n Y
14.
 
Olympus E-M5 III2360 n3.0 / 1040 swivel Y 1/8000s 10.0/s n Y
15.
 
Olympus E-M1 II2360 n3.0 / 1037 swivel Y 1/8000s 18.0/s n Y
16.
 
Panasonic S15760 Y3.2 / 2100 full-flex Y 1/8000s 9.0/s n Y
17.
 
Panasonic G902360 n3.0 / 1240 swivel Y 1/4000s 9.0/s Y Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
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One difference between the cameras concerns the presence of an on-board flash. The 20D has one, while the E-M1X does not. While the built-in flash of the 20D is not very powerful, it can at times be useful as a fill-in light.

The E-M1X has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the 20D 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 E-M1X 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 Olympus E-M1X 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.

The 20D writes its imaging data to Compact Flash cards, while the E-M1X uses SDXC cards. The E-M1X features dual card slots, which can be very useful in case a memory card fails. In contrast, the 20D only has one slot.

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Connectivity comparison

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 Canon EOS 20D and Olympus OM-D E-M1X and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
# image Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Canon 20DY- / ----1.1---
2.
 
Olympus E-M1XYstereo / monoYYmicro3.0Y-Y
3.
 
Canon 7D IIYstereo / monoYYmini3.0---
4.
 
Canon 60DYmono / monoY-mini2.0---
5.
 
Canon 7DYmono / -Y-mini2.0---
6.
 
Canon 50DY- / ---mini2.0---
7.
 
Canon 40DY- / ----2.0---
8.
 
Canon 30DY- / ----2.0---
9.
 
Canon XTY- / ----2.0---
10.
 
Canon 10DY- / ----1.1---
11.
 
Canon RebelY- / ----1.1---
12.
 
Nikon D200Y- / ----2.0---
13.
 
Olympus E-M1 IIIYstereo / monoYYmicro3.1Y-Y
14.
 
Olympus E-M5 IIIYstereo / monoY-micro2.0Y-Y
15.
 
Olympus E-M1 IIYstereo / monoYYmicro3.0Y--
16.
 
Panasonic S1Ystereo / monoYYfull3.1Y-Y
17.
 
Panasonic G90Ystereo / monoYYmicro2.0Y-Y
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It is notable that the E-M1X offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the 20D does not provide wifi capability.

Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.

Travel and landscape photographers will find it useful that the E-M1X has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

Both the 20D and the E-M1X have been discontinued, but can regularly be found used on ebay. The 20D was replaced by the Canon 30D, while the E-M1X does not have a direct successor. Further information on the features and operation of the 20D and E-M1X can be found, respectively, in the Canon 20D Manual (free pdf) or the online Olympus E-M1X Manual.

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Review summary

So what is the bottom line? Is there a clear favorite between the Canon 20D and the Olympus E-M1X? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.

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Reasons to prefer 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: Features an LCD display on top to control shooting parameters.
  • More compact: Is smaller (144x106mm vs 144x147mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 227g or 23 percent) and hence easier to carry around.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More affordable: Was introduced into a lower priced category (50 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in August 2004).

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Arguments in favor of the Olympus OM-D E-M1X:

  • More detail: Has more megapixels (20.2 vs 8.2MP), which boosts linear resolution by 54%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • High quality composites: Can combine several shots after pixel-shifting its sensor.
  • Broader imaging potential: Can capture not only stills but also 4K/30p video.
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • More complete view: Has a viewfinder with a larger field of view (100% vs 95%).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.83x vs 0.56x).
  • 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 (1037k vs 118k dots).
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster burst: Shoots at higher frequency (18 vs 5 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
  • Longer lasting: Gets more shots (870 versus 700) out of a single battery charge.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
  • More legacy lens friendly: Can use many non-native lenses via adapters.
  • Easier geotagging: Features an internal GPS sensor to log localization data.
  • Faster data transfer: Supports a more advanced USB protocol (3.0 vs 1.1).
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • More modern: Reflects 14 years and 5 months of technical progress since the 20D launch.

If the count of relative strengths (bullet points above) is taken as a measure, the E-M1X is the clear winner of the contest (28 : 8 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. 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.

20D 08:28 E-M1X

How about other alternatives? Do the specifications of the Canon 20D and the Olympus E-M1X place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Mirrorless Interchangeable Lens Camera listings 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 incomplete and does no justice, for example, to the way the 20D or the E-M1X perform in practice. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.

Expert reviews

This is why hands-on reviews by experts are important. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). 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.

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Expert Camera Reviews
# image  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon 20D......+ +.... Aug 2004 1,499ebay.com
2.
 
Olympus E-M1X4.5/5o5/585/1004.5/5.. Jan 2019 2,999ebay.com
3.
 
Canon 7D II4.5/5+3.5/584/1004/54.5/5 Sep 2014 1,799ebay.com
4.
 
Canon 60D5/5+..79/1004/54.5/5 Aug 2010 1,399ebay.com
5.
 
Canon 7D5/5+ +..84/1004.5/54.5/5 Sep 2009 1,699ebay.com
6.
 
Canon 50D..+ +..+ +4.5/54.5/5 Aug 2008 1,299ebay.com
7.
 
Canon 40D..+ +..+ +4.5/54.5/5 Aug 2007 1,299ebay.com
8.
 
Canon 30D..+ +..+ +o.. Feb 2006 1,399ebay.com
9.
 
Canon XT..80/100..+ +o.. Feb 2005 899ebay.com
10.
 
Canon 10D......+ +.... Feb 2003 1,999ebay.com
11.
 
Canon Rebel......+ +.... Aug 2003 899ebay.com
12.
 
Nikon D200..+ +..+ +o.. Nov 2005 1,699ebay.com
13.
 
Olympus E-M1 III5/5..5/583/1004.5/54/5 Feb 2020 1,799ebay.com
14.
 
Olympus E-M5 III5/5+5/582/1004.5/54.5/5 Oct 2019 1,199ebay.com
15.
 
Olympus E-M1 II5/5+ +5/585/1004.5/54.5/5 Sep 2016 1,999ebay.com
16.
 
Panasonic S14.5/5+ +4.5/588/1004.5/54/5 Feb 2019 2,499 amazon.com
17.
 
Panasonic G904.5/5+4.5/583/1004.5/54.5/5 Apr 2019 999ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
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The review scores listed above should be treated with care, 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. 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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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.

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    Specifications: Canon 20D vs Olympus E-M1X

    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 Specifications
    Camera Model Canon 20D Olympus E-M1X
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Canon EF mount lenses Micro Four Thirds lenses
    Launch Date August 2004 January 2019
    Launch Price USD 1,499 USD 2,999
    Sensor Specs Canon 20D Olympus E-M1X
    Sensor Technology CMOS CMOS
    Sensor Format APS-C Sensor Four Thirds Sensor
    Sensor Size 22.5 x 15.0 mm 17.3 x 13.0 mm
    Sensor Area 337.5 mm2 224.9 mm2
    Sensor Diagonal 27 mm 21.6 mm
    Crop Factor 1.6x 2.0x
    Sensor Resolution 8.2 Megapixels 20.2 Megapixels
    Image Resolution 3504 x 2336 pixels 5184 x 3888 pixels
    Pixel Pitch 6.42 μm 3.34 μm
    Pixel Density 2.43 MP/cm2 8.96 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability no Video 4K/30p Video
    ISO Setting 100 - 1,600 ISO 200 - 25,600 ISO
    ISO Boost 100 - 3,200 ISO 64 - 25,600 ISO
    Image Processor DIGIC 2 Dual TruePic VIII
    DXO Sensor Quality (score) 62 ..
    DXO Color Depth (bits) 21.9 ..
    DXO Dynamic Range (EV) 11.0 ..
    DXO Low Light (ISO) 721 ..
    Screen Specs Canon 20D Olympus E-M1X
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.56x 0.83x
    Viewfinder Resolution 2360k dots
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View
    Rear LCD Size 1.8inch 3.0inch
    LCD Resolution 118k dots 1037k dots
    LCD Attachment Fixed screen Swivel screen
    Touch Input no Touchscreen Touchscreen
    Shooting Specs Canon 20D Olympus E-M1X
    Focus System Phase-detect AF On-Sensor Phase-detect
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/8000s
    Continuous Shooting 5 shutter flaps/s 18 shutter flaps/s
    Shutter Life Expectancy50 000 actuations200 000 actuations
    Electronic Shutterno E-Shutterup to 1/32000s
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium CF cards SDXC cards
    Single or Dual Card Slots Single card slot Dual card slots
    Connectivity Specs Canon 20D Olympus E-M1X
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket PC Sync socket
    USB Connector USB 1.1 USB 3.0
    HDMI Port no HDMI micro HDMI
    Microphone Port no MIC socket External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support no Wifi Wifi built-in
    Bluetooth Support no Bluetooth Bluetooth built-in
    Geotagging no internal GPS GPS built-in
    Body Specs Canon 20D Olympus E-M1X
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type Canon BP-511A Olympus BLH-1
    Battery Life (CIPA)700 shots per charge870 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 144 x 106 x 72 mm
    (5.7 x 4.2 x 2.8 in)
    144 x 147 x 75 mm
    (5.7 x 5.8 x 3.0 in)
    Camera Weight 770 g (27.2 oz) 997 g (35.2 oz)
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