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Canon 77D vs OM System OM-1

The Canon EOS 77D and the OM System OM-1 are two digital cameras that were revealed to the public, respectively, in February 2017 and February 2022. The 77D is a DSLR, while the OM-1 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (77D) and a Four Thirds (OM-1) sensor. The Canon has a resolution of 24 megapixels, whereas the OM System 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 77D
versus
OM System OM-1
Canon 77D   OM System OM-1
Digital single lens reflex Mirrorless system camera
Canon EF mount lenses Micro Four Thirds lenses
24 MP – APS-C sensor 20.2 MP – Four Thirds sensor
1080/60p Video 4K/60p Video
ISO 100-25,600 (100 - 51,200) ISO 80-25,600 (80 - 102,400)
Optical viewfinder Electronic viewfinder (5760k dots)
3.0" LCD – 1040k dots 3.0" LCD – 1640k dots
Swivel touchscreen Swivel touchscreen
6 shutter flaps per second 10 shutter flaps per second
Lens stabilization onlyIn-body stabilization
not weather sealedWeathersealed body
600 shots per battery charge520 shots per battery charge
131 x 100 x 76 mm, 540 g 135 x 92 x 73 mm, 599 g
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Check 77D offers at
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Check OM-1 offers at
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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 77D and the OM System OM-1? 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 77D and the OM System OM-1 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.

Size Canon 77D vs OM System OM-1
Compare 77D versus OM-1 top
Comparison 77D or OM-1 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the OM System OM-1 is notably smaller (5 percent) than the Canon 77D. However, the OM-1 is markedly heavier (11 percent) than the 77D. It is noteworthy in this context that the OM-1 is splash and dust-proof, while the 77D 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 (77D) and the Micro Four Thirds Lens Catalog (OM-1). Mirrorless cameras, such as the OM-1, 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 77D gets 600 shots out of its Canon LP-E17 battery, while the OM-1 can take 520 images on a single charge of its OM System BLX-1 power pack. The power pack in the OM-1 can be charged via the USB port, which can be very convenient when travelling.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.

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Body Specifications
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon 77D 131 mm 100 mm 76 mm 540 g 600 n Feb 2017 899ebay.com
2.
 
OM System OM-1 135 mm 92 mm 73 mm 599 g 520 Y Feb 2022 2,199ebay.com
3.
 
Canon 80D 139 mm 105 mm 79 mm 730 g 960 Y Feb 2016 1,199ebay.com
4.
 
Canon 200D 122 mm 93 mm 70 mm 453 g 650 n Jun 2017 549ebay.com
5.
 
Canon 750D 132 mm 101 mm 78 mm 555 g 440 n Feb 2015 749ebay.com
6.
 
Canon 760D 132 mm 101 mm 78 mm 565 g 440 n Feb 2015 649ebay.com
7.
 
Canon 800D 131 mm 100 mm 76 mm 532 g 600 n Feb 2017 749ebay.com
8.
 
Canon 850D 131 mm 103 mm 76 mm 515 g 800 n Feb 2020 749ebay.com
9.
 
Canon 1300D 129 mm 101 mm 78 mm 485 g 500 n Mar 2016 449ebay.com
10.
 
Canon 2000D 129 mm 101 mm 78 mm 475 g 500 n Feb 2018 449 amazon.com
11.
 
Canon M5 116 mm 89 mm 61 mm 427 g 295 n Sep 2016 979ebay.com
12.
 
Canon M6 112 mm 68 mm 45 mm 390 g 295 n Feb 2017 779ebay.com
13.
 
Olympus E-M1 II 134 mm 91 mm 67 mm 574 g 440 Y Sep 2016 1,999ebay.com
14.
 
Olympus E-M1 III 134 mm 91 mm 69 mm 580 g 420 Y Feb 2020 1,799ebay.com
15.
 
OM System OM-1 II 135 mm 92 mm 73 mm 599 g 500 Y Jan 2024 2,399 amazon.com
16.
 
Panasonic GH5 139 mm 98 mm 87 mm 725 g 410 Y Jan 2017 1,999ebay.com
17.
 
Panasonic GH5 II 139 mm 98 mm 87 mm 727 g 400 Y May 2021 1,699 amazon.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

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 77D was launched at a markedly lower price (by 59 percent) than the OM-1, 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 imaging sensor is a crucial determinant of image quality. A large sensor will generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have richer color-depth than smaller pixels 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 associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Canon 77D features an APS-C sensor and the OM System OM-1 a Four Thirds sensor. The sensor area in the OM-1 is 32 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 77D has a native 3:2 aspect ratio, while the one in the OM-1 offers a 4:3 aspect.

Canon 77D and OM System OM-1 sensor measures

With 24MP, the 77D offers a higher resolution than the OM-1 (20.2MP), but the 77D nevertheless has larger individual pixels (pixel pitch of 3.72μm versus 3.34μm for the OM-1) due to its larger sensor. However, the OM-1 is a much more recent model (by 5 years) than the 77D, 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 OM-1 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Canon 77D implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 77D for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 cm. The corresponding values for the OM System OM-1 are 25.9 x 19.4 inches or 65.8 x 49.4 cm for good quality, 20.7 x 15.6 inches or 52.7 x 39.5 cm for very good quality, and 17.3 x 13 inches or 43.9 x 32.9 cm for excellent quality prints.

Unlike the 77D, the OM-1 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 77D has a native sensitivity range from ISO 100 to ISO 25600, which can be extended to ISO 100-51200. The corresponding ISO settings for the OM System OM-1 are ISO 80 to ISO 25600, with the possibility to increase the ISO range to 80-102400.

In terms of underlying technology, the 77D is build around a CMOS sensor, while the OM-1 uses a Stacked BSI-CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

77D versus OM-1 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
  empty Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Canon 77D APS-C 24.0 6000 40001080/60p23.613.397178
2.
 
OM System OM-1 Four Thirds 20.2 5184 38884K/60p23.413.4155377
3.
 
Canon 80D APS-C 24.0 6000 40001080/60p23.613.2113579
4.
 
Canon 200D APS-C 24.0 6000 40001080/60p23.613.4104179
5.
 
Canon 750D APS-C 24.0 6000 40001080/30p22.712.091971
6.
 
Canon 760D APS-C 24.0 6000 40001080/30p22.612.091570
7.
 
Canon 800D APS-C 24.0 6000 40001080/60p23.713.1158680
8.
 
Canon 850D APS-C 24.0 6000 40004K/24p24.013.5187383
9.
 
Canon 1300D APS-C 17.9 5184 34561080/30p22.011.778166
10.
 
Canon 2000D APS-C 24.0 6000 40001080/30p22.611.9100971
11.
 
Canon M5 APS-C 24.0 6000 40001080/60p23.412.4126277
12.
 
Canon M6 APS-C 24.0 6000 40001080/60p23.412.6131778
13.
 
Olympus E-M1 II Four Thirds 20.2 5184 38884K/30p23.712.8131280
14.
 
Olympus E-M1 III Four Thirds 20.2 5184 38884K/30p23.313.1135676
15.
 
OM System OM-1 II Four Thirds 20.2 5184 38884K/60p23.413.6174978
16.
 
Panasonic GH5 Four Thirds 20.2 5184 38884K/60p23.913.080777
17.
 
Panasonic GH5 II Four Thirds 20.2 5184 38884K/60p23.713.1113679
Note: DXO values in italics represent estimates based on sensor size and age.

Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the OM-1 provides a better video resolution than the 77D. It can shoot movie footage at 4K/60p, while the Canon is limited to 1080/60p.

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Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the OM-1 has an electronic viewfinder (5760k dots), while the 77D 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 OM-1 offers a wider field of view (100%) than the one in the 77D (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the OM-1 has a higher magnification (0.82x vs 0.51x), 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 77D, the OM System OM-1, and comparable cameras.

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Core Features
  empty 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 77Doptical Y3.0 / 1040 swivel Y 1/4000s 6.0/s Y n
2.
 
OM System OM-15760 n3.0 / 1640 swivel Y 1/8000s 10.0/s n Y
3.
 
Canon 80Doptical Y3.0 / 1040 swivel Y 1/8000s 7.0/s Y n
4.
 
Canon 200Doptical n3.0 / 1040 swivel Y 1/4000s 5.0/s Y n
5.
 
Canon 750Doptical n3.0 / 1040 swivel Y 1/4000s 5.0/s Y n
6.
 
Canon 760Doptical Y3.0 / 1040 swivel Y 1/4000s 5.0/s Y n
7.
 
Canon 800Doptical n3.0 / 1040 swivel Y 1/4000s 6.0/s Y n
8.
 
Canon 850Doptical n3.0 / 1040 swivel Y 1/4000s 7.5/s Y n
9.
 
Canon 1300Doptical n3.0 / 920 fixed n 1/4000s 3.0/s Y n
10.
 
Canon 2000Doptical n3.0 / 920 fixed n 1/4000s 3.0/s Y n
11.
 
Canon M52360 n3.2 / 1620 tilting Y 1/4000s 9.0/s Y n
12.
 
Canon M6optional n3.0 / 1040 tilting Y 1/4000s 9.0/s Y n
13.
 
Olympus E-M1 II2360 n3.0 / 1037 swivel Y 1/8000s 18.0/s n Y
14.
 
Olympus E-M1 III2360 n3.0 / 1037 swivel Y 1/8000s 18.0/s n Y
15.
 
OM System OM-1 II5760 n3.0 / 1640 swivel Y 1/8000s 10.0/s n Y
16.
 
Panasonic GH53680 n3.2 / 1620 swivel Y 1/8000s 12.0/s n Y
17.
 
Panasonic GH5 II3680 n3.0 / 1840 swivel Y 1/8000s 12.0/s n Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One difference between the cameras concerns the presence of an on-board flash. The 77D has one, while the OM-1 does not. While the built-in flash of the 77D is not very powerful, it can at times be useful as a fill-in light.

Both cameras have an articulated rear screen that can be turned to be front-facing. This feature will be particularly appreciated by vloggers and photographers who are interested in taking selfies.

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 OM-1 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 Canon 77D and the OM System OM-1 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 77D and the OM-1 write their files to SDXC cards. The OM-1 features dual card slots, which can be very useful in case a memory card fails. In contrast, the 77D only has one slot. The OM-1 supports UHS-II cards (on both slots), while the 77D can use UHS-I cards.

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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 77D and OM System OM-1 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
  empty Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Canon 77DYstereo / monoY-mini2.0YYY
2.
 
OM System OM-1Ystereo / monoYYmicro3.0Y-Y
3.
 
Canon 80DYstereo / monoYYmini2.0YY-
4.
 
Canon 200DYstereo / monoY-mini2.0YYY
5.
 
Canon 750DYstereo / monoY-mini2.0YY-
6.
 
Canon 760DYstereo / monoY-mini2.0YY-
7.
 
Canon 800DYstereo / monoY-mini2.0YYY
8.
 
Canon 850DYstereo / monoY-mini2.0Y-Y
9.
 
Canon 1300DYmono / mono--mini2.0YY-
10.
 
Canon 2000DYmono / mono--mini2.0YY-
11.
 
Canon M5Ystereo / monoY-mini2.0YYY
12.
 
Canon M6Ystereo / monoY-mini2.0YYY
13.
 
Olympus E-M1 IIYstereo / monoYYmicro3.0Y--
14.
 
Olympus E-M1 IIIYstereo / monoYYmicro3.1Y-Y
15.
 
OM System OM-1 IIYstereo / monoYYmicro3.0Y-Y
16.
 
Panasonic GH5Ystereo / monoYYfull3.1Y-Y
17.
 
Panasonic GH5 IIYstereo / monoYYfull3.2Y-Y

It is notable that the OM-1 has a headphone jack, which makes it possible to attach external headphones and monitor the quality of sound during the recording process. The 77D lacks such a headphone port.

Studio photographers will appreciate that the OM System OM-1 (unlike the 77D) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the 77D and the OM-1 have been discontinued, but can regularly be found used on ebay. The OM-1 was replaced by the OM System OM-1 II, while the 77D does not have a direct successor. Further information on the features and operation of the 77D and OM-1 can be found, respectively, in the Canon 77D Manual (free pdf) or the online OM System OM-1 Manual.

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Review summary

So how do things add up? Which of the two cameras – the Canon 77D or the OM System OM-1 – has the upper hand? Is one clearly better than the other? 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 77D:

  • More detail: Offers more megapixels (24 vs 20.2MP) with a 11% higher linear resolution.
  • 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.
  • Less heavy: Is lighter (by 59g or 10 percent) and hence easier to carry around.
  • Longer lasting: Can take more shots (600 versus 520) on a single battery charge.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • More affordable: Was introduced into a lower priced category (59 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in February 2017).

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Reasons to prefer the OM System OM-1:

  • 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.
  • Better video: Provides higher definition movie capture (4K/60p vs 1080/60p).
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • 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 (0.82x vs 0.51x).
  • More detailed LCD: Has a higher resolution rear screen (1640k vs 1040k dots).
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (10 vs 6 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • 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.
  • Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
  • More modern: Reflects 5 years of technical progress since the 77D launch.

If the count of individual advantages (bullet points above) is taken as a guide, the OM-1 is the clear winner of the contest (20 : 10 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 wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

77D 10:20 OM-1

How about other alternatives? Do the specifications of the Canon 77D and the OM System OM-1 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 specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the 77D or the OM-1. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.

Expert reviews

This is where reviews by experts come in. The adjacent summary-table relays the overall verdicts of several of the most popular 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
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon 77D4.5/5..4/582/1004.5/54/5 Feb 2017 899ebay.com
2.
 
OM System OM-15/5....87/1005/54.5/5 Feb 2022 2,199ebay.com
3.
 
Canon 80D4/5+ +4.5/584/1004.5/54.5/5 Feb 2016 1,199ebay.com
4.
 
Canon 200D4/5+ +4/578/1004.5/54.5/5 Jun 2017 549ebay.com
5.
 
Canon 750D5/5....75/1004.5/54.5/5 Feb 2015 749ebay.com
6.
 
Canon 760D5/5+..77/1004.5/54.5/5 Feb 2015 649ebay.com
7.
 
Canon 800D4.5/5..3.5/580/1004.5/54/5 Feb 2017 749ebay.com
8.
 
Canon 850D4/5+3/580/1004/53.5/5 Feb 2020 749ebay.com
9.
 
Canon 1300D4/5o4/573/1004/54/5 Mar 2016 449ebay.com
10.
 
Canon 2000D3/5o3.5/5..3.5/53.5/5 Feb 2018 449 amazon.com
11.
 
Canon M54/5+4/582/1004/54/5 Sep 2016 979ebay.com
12.
 
Canon M6......80/1004/54/5 Feb 2017 779ebay.com
13.
 
Olympus E-M1 II5/5+ +5/585/1004.5/54.5/5 Sep 2016 1,999ebay.com
14.
 
Olympus E-M1 III5/5..5/583/1004.5/54/5 Feb 2020 1,799ebay.com
15.
 
OM System OM-1 II............ Jan 2024 2,399 amazon.com
16.
 
Panasonic GH54.5/5+ +..85/1004.5/55/5 Jan 2017 1,999ebay.com
17.
 
Panasonic GH5 II4.5/5..4.5/585/1004.5/55/5 May 2021 1,699 amazon.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, please note that some of the review sites have changed their methodology and reporting over time.

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Check OM-1 offers at
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Other camera comparisons

Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, 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 77D vs OM System OM-1

    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 77D OM System OM-1
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Canon EF mount lenses Micro Four Thirds lenses
    Launch Date February 2017 February 2022
    Launch Price USD 899 USD 2,199
    Sensor Specs Canon 77D OM System OM-1
    Sensor Technology CMOS Stacked BSI-CMOS
    Sensor Format APS-C Sensor Four Thirds Sensor
    Sensor Size 22.3 x 14.9 mm 17.3 x 13.0 mm
    Sensor Area 332.27 mm2 224.9 mm2
    Sensor Diagonal 26.8 mm 21.6 mm
    Crop Factor 1.6x 2.0x
    Sensor Resolution 24 Megapixels 20.2 Megapixels
    Image Resolution 6000 x 4000 pixels 5184 x 3888 pixels
    Pixel Pitch 3.72 μm 3.34 μm
    Pixel Density 7.22 MP/cm2 8.96 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 1080/60p Video 4K/60p Video
    ISO Setting 100 - 25,600 ISO 80 - 25,600 ISO
    ISO Boost 100 - 51,200 ISO 80 - 102,400 ISO
    Image Processor DIGIC 7 TruePic X
    DXO Sensor Quality (score) 78 ..
    DXO Color Depth (bits) 23.6 ..
    DXO Dynamic Range (EV) 13.3 ..
    DXO Low Light (ISO) 971 ..
    Screen Specs Canon 77D OM System OM-1
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.51x 0.82x
    Viewfinder Resolution 5760k dots
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 1040k dots 1640k dots
    LCD Attachment Swivel screen Swivel screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs Canon 77D OM System OM-1
    Focus System Phase-detect AF On-Sensor Phase-detect
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/8000s
    Continuous Shooting 6 shutter flaps/s 10 shutter flaps/s
    Shutter Life Expectancy100 000 actuations400 000 actuations
    Electronic Shutterno E-Shutterup to 1/32000s
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium SDXC cards SDXC cards
    Single or Dual Card Slots Single card slot Dual card slots
    UHS card support UHS-I Dual UHS-II
    Connectivity Specs Canon 77D OM System OM-1
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 2.0 USB 3.0
    HDMI Port mini HDMI micro HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support Wifi built-in Wifi built-in
    Near-Field Communication NFC built-in no NFC
    Bluetooth Support Bluetooth built-in Bluetooth built-in
    Body Specs Canon 77D OM System OM-1
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type Canon LP-E17 OM System BLX-1
    Battery Life (CIPA)600 shots per charge520 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 131 x 100 x 76 mm
    (5.2 x 3.9 x 3.0 in)
    135 x 92 x 73 mm
    (5.3 x 3.6 x 2.9 in)
    Camera Weight 540 g (19.0 oz) 599 g (21.1 oz)
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