Canon 77D vs G1X Mark III
The Canon EOS 77D and the Canon PowerShot G1 X Mark III are two digital cameras that were revealed to the public, respectively, in February 2017 and October 2017. The 77D is a DSLR, while the G1X Mark III is a fixed lens compact. Both cameras are equipped with an APS-C sensor. Both cameras offer a resolution of 24 megapixels.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 77D and the Canon PowerShot G1 X Mark III? 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.
The physical size and weight of the Canon 77D and the Canon G1 X Mark III are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth measures are rounded to the nearest millimeter.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon G1 X Mark III is considerably smaller (32 percent) than the Canon 77D. It is noteworthy in this context that the G1X Mark III 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 and possibly misleading, as the G1X Mark III has a lens built in, whereas the 77D is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can compare the optics available for the 77D and their specifications in the Canon EF Lens Catalog.
The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.
|1.||Canon 77D||131 mm||100 mm||76 mm||540 g||600||n||Feb 2017||899||ebay.com|
|2.||Canon G1 X Mark III||115 mm||78 mm||51 mm||399 g||200||Y||Oct 2017||1,299||amazon.com|
|3.||Canon T8i||131 mm||103 mm||76 mm||515 g||800||n||Feb 2020||749||amazon.com|
|4.||Canon T7||129 mm||101 mm||78 mm||475 g||500||n||Feb 2018||449||amazon.com|
|5.||Canon SL2||122 mm||93 mm||70 mm||453 g||650||n||Jun 2017||549||ebay.com|
|6.||Canon T7i||131 mm||100 mm||76 mm||532 g||600||n||Feb 2017||749||ebay.com|
|7.||Canon 80D||139 mm||105 mm||79 mm||730 g||960||Y||Feb 2016||1,199||ebay.com|
|8.||Canon M5||116 mm||89 mm||61 mm||427 g||295||n||Sep 2016||979||ebay.com|
|9.||Canon T6||129 mm||101 mm||78 mm||485 g||500||n||Mar 2016||449||ebay.com|
|10.||Canon T6i||132 mm||101 mm||78 mm||555 g||440||n||Feb 2015||749||ebay.com|
|11.||Canon T6s||132 mm||101 mm||78 mm||565 g||440||n||Feb 2015||649||ebay.com|
|12.||Canon T4i||133 mm||100 mm||79 mm||575 g||440||n||Jun 2012||849||ebay.com|
|13.||Canon T3i||133 mm||100 mm||80 mm||570 g||440||n||Feb 2011||599||ebay.com|
|14.||Fujifilm X100V||128 mm||75 mm||53 mm||478 g||420||Y||Feb 2020||1,399||amazon.com|
|15.||Fujifilm X100F||127 mm||75 mm||52 mm||469 g||390||n||Jan 2017||1,299||ebay.com|
|16.||Sony A6300||120 mm||67 mm||49 mm||404 g||400||Y||Feb 2016||999||ebay.com|
|17.||Sony A6500||120 mm||67 mm||53 mm||453 g||350||Y||Oct 2016||1,399||ebay.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 retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. 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.
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 an APS-C sensor and have a format factor (sometimes also referred to as "crop factor") of 1.6. 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 have a native aspect ratio (sensor width to sensor height) of 3:2.
The two cameras under review do not only share the same sensor size, but also offer an identical resolution of 24 megapixels. This similarity in sensor specs implies that both the 77D and the G1X Mark III have the same pixel density, as well as the same pixel size. It should, however, be noted that the G1X Mark III is a somewhat more recent model (by 7 months) than the 77D, and its sensor might have benefitted from technological advances during this time.
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 Canon PowerShot G1 X Mark III are ISO 100 to ISO 25600 (no boost).
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.
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.
|2.||Canon G1 X Mark III||APS-C||24.0||6000||4000||1080/60p||23.8||13.2||1649||81|
|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. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, and both provide the same movie specifications (1080/60p).
Beyond body and sensor, cameras can and do differ across a range of features. For example, the G1X Mark III has an electronic viewfinder (2360k 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 table below summarizes some of the other core capabilities of the Canon 77D and Canon G1 X Mark III in connection with corresponding information for a sample of similar cameras.
|1.||Canon 77D||optical||Y||3.0 / 1040||swivel||Y||1/4000s||6.0/s||Y||n|
|2.||Canon G1 X Mark III||2360||n||3.0 / 1040||swivel||Y||1/2000s||9.0/s||Y||Y|
|3.||Canon T8i||optical||n||3.0 / 1040||swivel||Y||1/4000s||7.5/s||Y||n|
|4.||Canon T7||optical||n||3.0 / 920||fixed||n||1/4000s||3.0/s||Y||n|
|5.||Canon SL2||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|6.||Canon T7i||optical||n||3.0 / 1040||swivel||Y||1/4000s||6.0/s||Y||n|
|7.||Canon 80D||optical||Y||3.0 / 1040||swivel||Y||1/8000s||7.0/s||Y||n|
|8.||Canon M5||2360||n||3.2 / 1620||tilting||Y||1/4000s||9.0/s||Y||n|
|9.||Canon T6||optical||n||3.0 / 920||fixed||n||1/4000s||3.0/s||Y||n|
|10.||Canon T6i||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|11.||Canon T6s||optical||Y||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|12.||Canon T4i||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|13.||Canon T3i||optical||n||3.0 / 1040||swivel||n||1/4000s||3.7/s||Y||n|
|14.||Fujifilm X100V||3690||n||3.0 / 1620||tilting||Y||1/4000s||11.0/s||Y||n|
|15.||Fujifilm X100F||2360||n||3.0 / 1040||fixed||n||1/4000s||8.0/s||Y||n|
|16.||Sony A6300||2359||n||3.0 / 922||tilting||n||1/4000s||11.0/s||Y||n|
|17.||Sony A6500||2359||n||3.0 / 922||tilting||Y||1/4000s||11.0/s||Y||Y|
|Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.|
One feature that is present on the 77D, but is missing on the G1X Mark III is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.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 Canon 77D and the Canon G1 X Mark III 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 G1X Mark III write their files to SDXC cards. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.
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 Canon PowerShot G1 X Mark III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Canon 77D||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|2.||Canon G1 X Mark III||Y||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|3.||Canon T8i||Y||stereo / mono||Y||-||mini||2.0||Y||-||Y|
|4.||Canon T7||Y||mono / mono||-||-||mini||2.0||Y||Y||-|
|5.||Canon SL2||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|6.||Canon T7i||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|7.||Canon 80D||Y||stereo / mono||Y||Y||mini||2.0||Y||Y||-|
|8.||Canon M5||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|9.||Canon T6||Y||mono / mono||-||-||mini||2.0||Y||Y||-|
|10.||Canon T6i||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|11.||Canon T6s||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|12.||Canon T4i||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|13.||Canon T3i||Y||mono / mono||Y||-||mini||2.0||-||-||-|
|14.||Fujifilm X100V||Y||stereo / mono||Y||-||micro||3.1||Y||-||Y|
|15.||Fujifilm X100F||Y||stereo / mono||Y||-||micro||2.0||Y||-||-|
|16.||Sony A6300||Y||stereo / mono||Y||-||micro||2.0||Y||Y||-|
|17.||Sony A6500||Y||stereo / mono||Y||-||micro||2.0||Y||Y||-|
It is notable that the 77D has a microphone port, which is missing on the G1X Mark III. Such an external microphone input can help to substantially improve the quality of audio recordings when a good external microphone is used.
The G1X Mark III is a recent model that features in the current product line-up of Canon. In contrast, the 77D has been discontinued (but can be found pre-owned on ebay). There has not been a direct replacement model for the 77D from Canon. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon website.
So what conclusions can be drawn? Is the Canon 77D better than the Canon G1 X Mark III or vice versa? The listing below highlights the relative strengths of the two models.
Reasons to prefer the Canon EOS 77D:
- Better sound: Can connect to an external microphone for higher quality sound recording.
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Easier setting verification: Features an LCD display on top to control shooting parameters.
- Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/2000s) to freeze action.
- More flexible: Can take a variety of interchangeable lenses, including specialty optics.
- Longer lasting: Can take more shots (600 versus 200) on a single battery charge.
- More heavily discounted: Has been on the market for longer (launched in February 2017).
Advantages of the Canon PowerShot G1 X Mark III:
- More framing info: Has an electronic viewfinder that displays shooting data.
- Faster burst: Shoots at higher frequency (9 vs 6 flaps/sec) to capture the decisive moment.
- Ready to shoot: Comes with an integrated lens, while the 77D requires a separate lens.
- More compact: Is smaller (115x78mm vs 131x100mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight even though it has a lens built in (unlike the 77D).
- 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 modern: Was introduced somewhat (7 months) more recently.
If the count of individual advantages (bullet points above) is taken as a guide, the G1X Mark III comes out slightly ahead of the 77D (8 : 7 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. 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.
How about other alternatives? Do the specifications of the Canon 77D and the Canon G1 X Mark III place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Travel-Zoom Camera listings whether the two cameras rank among the cream of the crop.
In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the 77D or the G1X Mark III. 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.
This is why hands-on reviews by experts are important. The table below provides a synthesis of the camera assessments of some of the best known photo-gear 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.
|1.||Canon 77D||4.5/5||..||4/5||82/100||4.5/5||4/5||Feb 2017||899||ebay.com|
|2.||Canon G1 X Mark III||5/5||+||4/5||79/100||4.5/5||4.5/5||Oct 2017||1,299||amazon.com|
|3.||Canon T8i||4.5/5||+||3/5||80/100||4/5||3.5/5||Feb 2020||749||amazon.com|
|4.||Canon T7||..||o||..||..||3.5/5||3.5/5||Feb 2018||449||amazon.com|
|5.||Canon SL2||4/5||+ +||4/5||78/100||4.5/5||4.5/5||Jun 2017||549||ebay.com|
|6.||Canon T7i||4.5/5||..||3.5/5||80/100||4.5/5||4/5||Feb 2017||749||ebay.com|
|7.||Canon 80D||4/5||+ +||4.5/5||84/100||4.5/5||4.5/5||Feb 2016||1,199||ebay.com|
|8.||Canon M5||4/5||+||4/5||82/100||4/5||4/5||Sep 2016||979||ebay.com|
|9.||Canon T6||4/5||o||4/5||73/100||4/5||4/5||Mar 2016||449||ebay.com|
|10.||Canon T6i||5/5||..||..||75/100||4.5/5||4.5/5||Feb 2015||749||ebay.com|
|11.||Canon T6s||5/5||+||..||77/100||4.5/5||4.5/5||Feb 2015||649||ebay.com|
|12.||Canon T4i||4/5||+ +||..||77/100||4.5/5||4.5/5||Jun 2012||849||ebay.com|
|13.||Canon T3i||3/5||o||..||77/100||4.5/5||4.5/5||Feb 2011||599||ebay.com|
|14.||Fujifilm X100V||5/5||+ +||4.5/5||86/100||5/5||4.5/5||Feb 2020||1,399||amazon.com|
|15.||Fujifilm X100F||5/5||+||3.9/5||83/100||4.5/5||4.5/5||Jan 2017||1,299||ebay.com|
|16.||Sony A6300||4.5/5||+||..||85/100||5/5||5/5||Feb 2016||999||ebay.com|
|17.||Sony A6500||5/5||+ +||3.5/5||85/100||4.5/5||4.5/5||Oct 2016||1,399||ebay.com|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. Hence, a score should always be seen in the context of the camera's market launch date and its price, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. It should also be noted that some of the review sites have over time altered the way they render their verdicts.
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 a corresponding selection in the search boxes below. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.
- Canon 77D vs Leica Digilux 3
- Canon 77D vs Leica S-E Typ 006
- Canon 77D vs Leica TL2
- Canon 77D vs Olympus E-M1
- Canon 77D vs Pentax MX-1
- Canon 77D vs Sony RX100 V
- Canon D60 vs Canon G1 X Mark III
- Canon G1 X Mark III vs Canon SX410
- Canon G1 X Mark III vs Canon T5i
- Canon G1 X Mark III vs Nikon Z fc
- Canon G1 X Mark III vs Nikon Z7 II
- Canon G1 X Mark III vs Sony RX100 VI
Specifications: Canon 77D vs Canon G1 X Mark III
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 Model||Canon 77D||Canon G1 X Mark III|
|Camera Type||Digital single lens reflex||Fixed lens compact camera|
|Camera Lens||Canon EF mount lenses||24-72mm f/2.8-5.6|
|Launch Date||February 2017||October 2017|
|Launch Price||USD 899||USD 1,299|
|Sensor Specs||Canon 77D||Canon G1 X Mark III|
|Sensor Format||APS-C Sensor||APS-C Sensor|
|Sensor Size||22.3 x 14.9 mm||22.3 x 14.9 mm|
|Sensor Area||332.27 mm2||332.27 mm2|
|Sensor Diagonal||26.8 mm||26.8 mm|
|Sensor Resolution||24 Megapixels||24 Megapixels|
|Image Resolution||6000 x 4000 pixels||6000 x 4000 pixels|
|Pixel Pitch||3.72 μm||3.72 μm|
|Pixel Density||7.22 MP/cm2||7.22 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/60p Video||1080/60p Video|
|ISO Setting||100 - 25,600 ISO||100 - 25,600 ISO|
|ISO Boost||100 - 51,200 ISO||no Enhancement|
|Image Processor||DIGIC 7||DIGIC 7|
|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||Canon G1 X Mark III|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||95%||100%|
|Viewfinder Resolution||2360k 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||1040k dots|
|LCD Attachment||Swivel screen||Swivel screen|
|Shooting Specs||Canon 77D||Canon G1 X Mark III|
|Focus System||Phase-detect AF||On-Sensor Phase-detect|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/2000s|
|Continuous Shooting||6 shutter flaps/s||9 shutter flaps/s|
|Time-Lapse Photography||Intervalometer built-in||Intervalometer built-in|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||SDXC cards||SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||UHS-I||UHS-I|
|Connectivity Specs||Canon 77D||Canon G1 X Mark III|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||micro HDMI|
|Microphone Port||External MIC port||no MIC socket|
|Wifi Support||Wifi built-in||Wifi built-in|
|Near-Field Communication||NFC built-in||NFC built-in|
|Bluetooth Support||Bluetooth built-in||Bluetooth built-in|
|Body Specs||Canon 77D||Canon G1 X Mark III|
|Environmental Sealing||not weather sealed||Weathersealed body|
|Battery Life (CIPA)||600 shots per charge||200 shots per charge|
131 x 100 x 76 mm
(5.2 x 3.9 x 3.0 in)
115 x 78 x 51 mm
(4.5 x 3.1 x 2.0 in)
|Camera Weight||540 g (19.0 oz)||399 g (14.1 oz)|
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