Canon G3 X vs M100
The Canon PowerShot G3 X and the Canon EOS M100 are two digital cameras that were officially introduced, respectively, in June 2015 and August 2017. The G3X is a fixed lens compact, while the M100 is a mirrorless interchangeable lens camera. The cameras are based on an one-inch (G3X) and an APS-C (M100) sensor. The G3X has a resolution of 20 megapixels, whereas the M100 provides 24 MP.
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 PowerShot G3 X and the Canon EOS M100? 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 side-by-side display below illustrates the physical size and weight of the Canon G3 X and the Canon M100. 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 M100 can be obtained in two different colors (black, white), while the G3X is only available in black.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon M100 is notably smaller (24 percent) than the Canon G3 X. It is worth mentioning in this context that the G3X is splash and dust resistant, while the M100 does not feature any corresponding weather-sealing.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G3X has a lens built in, whereas the M100 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup.
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.
|1.||Canon G3 X||123 mm||77 mm||105 mm||733 g||300||Y||Jun 2015||999||ebay.com|
|2.||Canon M100||108 mm||67 mm||35 mm||302 g||295||n||Aug 2017||499||ebay.com|
|3.||Canon M200||108 mm||67 mm||35 mm||299 g||315||n||Sep 2019||549||amazon.com|
|4.||Canon M6||112 mm||68 mm||45 mm||390 g||295||n||Feb 2017||779||ebay.com|
|5.||Canon 80D||139 mm||105 mm||79 mm||730 g||960||Y||Feb 2016||1,199||ebay.com|
|6.||Canon M5||116 mm||89 mm||61 mm||427 g||295||n||Sep 2016||979||ebay.com|
|7.||Canon G9 X||98 mm||58 mm||31 mm||209 g||220||n||Oct 2015||529||ebay.com|
|8.||Canon M3||111 mm||68 mm||44 mm||366 g||250||n||Feb 2015||679||ebay.com|
|9.||Canon M10||108 mm||67 mm||35 mm||301 g||255||n||Oct 2015||499||ebay.com|
|10.||Canon G7 X||103 mm||60 mm||40 mm||304 g||210||n||Sep 2014||699||ebay.com|
|11.||Canon 70D||139 mm||104 mm||79 mm||755 g||920||Y||Jul 2013||1,199||ebay.com|
|12.||Panasonic FZ2500||138 mm||102 mm||135 mm||915 g||350||n||Sep 2016||1,199||amazon.com|
|13.||Panasonic FZ1000||137 mm||99 mm||131 mm||831 g||360||n||Jun 2014||899||ebay.com|
|14.||Sony RX10 III||133 mm||94 mm||127 mm||1051 g||420||Y||Mar 2016||1,499||ebay.com|
|15.||Sony RX100 V||102 mm||58 mm||41 mm||299 g||220||n||Oct 2016||999||ebay.com|
|16.||Sony RX10 II||129 mm||88 mm||102 mm||813 g||400||Y||Jun 2015||1,299||ebay.com|
|17.||Sony RX10||129 mm||88 mm||102 mm||813 g||420||Y||Oct 2013||1,299||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 listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. 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.
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 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. 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 G3 X features an one-inch sensor and the Canon M100 an APS-C sensor. The sensor area in the M100 is 186 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.7 and 1.6. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Technology-wise, the M100 uses a more advanced image processing engine (DIGIC 7) than the G3X (DIGIC 6), with benefits for noise reduction, color accuracy, and processing speed.
With 24MP, the M100 offers a higher resolution than the G3X (20MP), but the M100 nevertheless has larger individual pixels (pixel pitch of 3.72μm versus 2.41μm for the G3X) due to its larger sensor. Moreover, the M100 is a much more recent model (by 2 years and 2 months) than the G3X, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units.
The resolution advantage of the Canon M100 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the M100 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 Canon G3 X are 27.4 x 18.2 inches or 69.5 x 46.3 cm for good quality, 21.9 x 14.6 inches or 55.6 x 37.1 cm for very good quality, and 18.2 x 12.2 inches or 46.3 x 30.9 cm for excellent quality prints.
The M100 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Canon PowerShot G3 X has a native sensitivity range from ISO 125 to ISO 12800, which can be extended to ISO 125-25600. The corresponding ISO settings for the Canon EOS M100 are ISO 100 to ISO 25600 (no boost).
In terms of underlying technology, the G3X is build around a BSI-CMOS sensor, while the M100 uses a 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.
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). Of the two cameras under consideration, the M100 offers substantially better image quality than the G3X (overall score 15 points higher). The advantage is based on 2.1 bits higher color depth, 0.6 EV in additional dynamic range, and 1.3 stops in additional low light sensitivity. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
|1.||Canon G3 X||1-inch||20.0||5472||3648||1080/60p||21.4||12.3||521||63|
|7.||Canon G9 X||1-inch||20.0||5472||3648||1080/60p||21.5||12.3||495||63|
|10.||Canon G7 X||1-inch||20.0||5472||3648||1080/60p||23.0||12.7||556||71|
|14.||Sony RX10 III||1-inch||20.0||5472||3648||4K/30p||23.1||12.6||472||70|
|15.||Sony RX100 V||1-inch||20.0||5472||3648||4K/30p||22.8||12.4||586||70|
|16.||Sony RX10 II||1-inch||20.0||5472||3648||4K/30p||23.0||12.6||531||70|
|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, and both provide the same movie specifications (1080/60p).
Apart from body and sensor, cameras can and do differ across a variety of features. The G3X and the M100 are similar in the sense that neither of the two has a viewfinder. The images are, thus, framed using live view on the rear LCD. That said, the G3X can be equipped with an optional viewfinder – the EVF-DC1. The adjacent table lists some of the other core features of the Canon G3 X and Canon M100 along with similar information for a selection of comparators.
|1.||Canon G3 X||optional||n||3.2 / 1620||tilting||Y||1/2000s||5.9/s||Y||Y|
|2.||Canon M100||none||n||3.0 / 1040||tilting||Y||1/4000s||6.1/s||Y||n|
|3.||Canon M200||none||n||3.0 / 1040||tilting||Y||1/4000s||6.1/s||Y||n|
|4.||Canon M6||optional||n||3.0 / 1040||tilting||Y||1/4000s||9.0/s||Y||n|
|5.||Canon 80D||optical||Y||3.0 / 1040||swivel||Y||1/8000s||7.0/s||Y||n|
|6.||Canon M5||2360||n||3.2 / 1620||tilting||Y||1/4000s||9.0/s||Y||n|
|7.||Canon G9 X||none||n||3.0 / 1040||fixed||Y||1/2000s||6.0/s||Y||Y|
|8.||Canon M3||optional||n||3.0 / 1040||tilting||Y||1/4000s||4.2/s||Y||n|
|9.||Canon M10||none||n||3.0 / 1040||tilting||Y||1/4000s||4.6/s||Y||n|
|10.||Canon G7 X||none||n||3.0 / 1040||tilting||Y||1/2000s||6.5/s||Y||Y|
|11.||Canon 70D||optical||Y||3.0 / 1040||swivel||Y||1/8000s||7.0/s||Y||n|
|12.||Panasonic FZ2500||2360||n||3.0 / 1040||swivel||Y||1/4000s||12.0/s||Y||Y|
|13.||Panasonic FZ1000||2359||n||3.0 / 921||swivel||n||1/4000s||12.0/s||Y||Y|
|14.||Sony RX10 III||2359||Y||3.0 / 1229||tilting||n||1/2000s||14.0/s||Y||Y|
|15.||Sony RX100 V||2359||n||3.0 / 1229||tilting||n||1/2000s||24.0/s||Y||Y|
|16.||Sony RX10 II||2359||Y||3.0 / 1229||tilting||n||1/3200s||14.0/s||Y||Y|
|17.||Sony RX10||1440||Y||3.0 / 1229||tilting||n||1/3200s||10.0/s||Y||Y|
|Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.|
Concerning the storage of imaging data, both the G3X and the M100 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 PowerShot G3 X and Canon EOS M100 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Canon G3 X||Y||stereo / mono||Y||Y||mini||2.0||Y||Y||-|
|2.||Canon M100||-||stereo / mono||-||-||micro||2.0||Y||Y||Y|
|3.||Canon M200||-||stereo / mono||-||-||micro||2.0||Y||-||Y|
|4.||Canon M6||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|5.||Canon 80D||Y||stereo / mono||Y||Y||mini||2.0||Y||Y||-|
|6.||Canon M5||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|7.||Canon G9 X||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|8.||Canon M3||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|9.||Canon M10||-||stereo / mono||-||-||mini||2.0||Y||Y||-|
|10.||Canon G7 X||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|11.||Canon 70D||Y||stereo / mono||Y||-||mini||2.0||Y||-||-|
|12.||Panasonic FZ2500||Y||stereo / mono||Y||Y||micro||2.0||Y||-||-|
|13.||Panasonic FZ1000||Y||stereo / mono||Y||-||micro||2.0||Y||Y||-|
|14.||Sony RX10 III||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
|15.||Sony RX100 V||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|16.||Sony RX10 II||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
|17.||Sony RX10||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
It is notable that the G3X has a hotshoe, while the M100 does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.
Both the G3X and the M100 have been discontinued, but can regularly be found used on ebay. The M100 was replaced by the Canon M200, while the G3X does not have a direct successor. Further information on the features and operation of the G3X and M100 can be found, respectively, in the Canon G3 X Manual (free pdf) or the online Canon M100 Manual.
So what conclusions can be drawn? Is the Canon G3 X better than the Canon M100 or vice versa? A synthesis of the relative strong points of each of the models is listed below.
Arguments in favor of the Canon PowerShot G3 X:
- Better sound: Can connect to an external microphone for higher quality sound recording.
- Better sound control: Has a headphone port that enables audio monitoring while recording.
- More framing options: Can be equipped with a hotshoe-mounted accessory-viewfinder.
- Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (1620k vs 1040k dots).
- Ready to shoot: Has a lens built-in, whereas the M100 requires a separate lens.
- Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
- Sharper images: Has hand-shake reducing image stabilization built-in.
- Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
- More heavily discounted: Has been available for much longer (launched in June 2015).
Advantages of the Canon EOS M100:
- More detail: Has more megapixels (24 vs 20MP), which boosts linear resolution by 10%.
- Better image quality: Scores substantially higher (15 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (2.1 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (0.6 EV of extra DR).
- Better low-light sensitivity: Can shoot in dim conditions (1.3 stops ISO advantage).
- Better jpgs: Has a more modern image processing engine (DIGIC 7 vs DIGIC 6).
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/2000s) to freeze action.
- More flexible: Takes interchangeable lenses and can thus be used with specialty optics.
- More compact: Is smaller (108x67mm vs 123x77mm) and will fit more readily into a bag.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- More modern: Reflects 2 years and 2 months of technical progress since the G3X launch.
If the count of relative strengths (bullet points above) is taken as a measure, the M100 emerges as the winner of the match-up (12 : 10 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 sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape 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 G3 X and the Canon M100 place the cameras among the top in their class? Find out in the latest Best Superzoom 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 says little about, for example, the shooting experience and imaging performance of the G3X and the M100 in practical situations. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.
This is why expert reviews 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.
|1.||Canon G3 X||3.5/5||+||..||..||4.5/5||4/5||Jun 2015||999||ebay.com|
|2.||Canon M100||3/5||+||..||..||4/5||3.5/5||Aug 2017||499||ebay.com|
|3.||Canon M200||..||+||3/5||79/100||4/5||4/5||Sep 2019||549||amazon.com|
|4.||Canon M6||..||..||..||80/100||4/5||4/5||Feb 2017||779||ebay.com|
|5.||Canon 80D||4/5||+ +||4.5/5||84/100||4.5/5||4.5/5||Feb 2016||1,199||ebay.com|
|6.||Canon M5||4/5||+||4/5||82/100||4/5||4/5||Sep 2016||979||ebay.com|
|7.||Canon G9 X||3.5/5||+ +||..||..||4.5/5||4.5/5||Oct 2015||529||ebay.com|
|8.||Canon M3||4/5||o||..||75/100||4.5/5||4/5||Feb 2015||679||ebay.com|
|9.||Canon M10||..||..||..||..||..||4/5||Oct 2015||499||ebay.com|
|10.||Canon G7 X||4/5||+ +||..||77/100||4.5/5||4.5/5||Sep 2014||699||ebay.com|
|11.||Canon 70D||5/5||+ +||..||83/100||4.5/5||5/5||Jul 2013||1,199||ebay.com|
|12.||Panasonic FZ2500||..||+||..||82/100||4.5/5||5/5||Sep 2016||1,199||amazon.com|
|13.||Panasonic FZ1000||4/5||+ +||..||82/100||4.5/5||4.5/5||Jun 2014||899||ebay.com|
|14.||Sony RX10 III||5/5||+||..||84/100||4.5/5||4.5/5||Mar 2016||1,499||ebay.com|
|15.||Sony RX100 V||4.5/5||+ +||..||83/100||4/5||4.5/5||Oct 2016||999||ebay.com|
|16.||Sony RX10 II||5/5||+ +||..||82/100||4.5/5||4/5||Jun 2015||1,299||ebay.com|
|17.||Sony RX10||5/5||+||..||80/100||4.5/5||4.5/5||Oct 2013||1,299||ebay.com|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
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. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.
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 a corresponding selection in the search boxes below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
- Canon G3 X vs Canon M6
- Canon G3 X vs Canon SX70
- Canon G3 X vs Canon T5
- Canon G3 X vs Olympus E-M5 II
- Canon G3 X vs Panasonic G6
- Canon G3 X vs Sony RX100
- Canon M100 vs Contax N Digital
- Canon M100 vs Fujifilm X-T100
- Canon M100 vs Nikon D850
- Canon M100 vs Olympus E-620
- Canon M100 vs Olympus E-P3
- Canon M100 vs Panasonic TZ100
Specifications: Canon G3 X vs Canon M100
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 G3 X||Canon M100|
|Camera Type||Fixed lens compact camera||Mirrorless system camera|
|Camera Lens||24-600mm f/2.8-5.6||Canon EF-M mount lenses|
|Launch Date||June 2015||August 2017|
|Launch Price||USD 999||USD 499|
|Sensor Specs||Canon G3 X||Canon M100|
|Sensor Format||1" Sensor||APS-C Sensor|
|Sensor Size||13.2 x 8.8 mm||22.3 x 14.9 mm|
|Sensor Area||116.16 mm2||332.27 mm2|
|Sensor Diagonal||15.9 mm||26.8 mm|
|Sensor Resolution||20 Megapixels||24 Megapixels|
|Image Resolution||5472 x 3648 pixels||6000 x 4000 pixels|
|Pixel Pitch||2.41 μm||3.72 μm|
|Pixel Density||17.18 MP/cm2||7.22 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/60p Video||1080/60p Video|
|ISO Setting||125 - 12,800 ISO||100 - 25,600 ISO|
|ISO Boost||125 - 25,600 ISO||no Enhancement|
|Image Processor||DIGIC 6||DIGIC 7|
|DXO Sensor Quality (score)||63||78|
|DXO Color Depth (bits)||21.4||23.5|
|DXO Dynamic Range (EV)||12.3||12.9|
|DXO Low Light (ISO)||521||1272|
|Screen Specs||Canon G3 X||Canon M100|
|Viewfinder Type||Viewfinder optional||no viewfinder|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.2inch||3.0inch|
|LCD Resolution||1620k dots||1040k dots|
|LCD Attachment||Tilting screen||Tilting screen|
|Shooting Specs||Canon G3 X||Canon M100|
|Focus System||Contrast-detect AF||On-Sensor Phase-detect|
|Manual Focusing Aid||Focus Peaking||Focus Peaking|
|Max Shutter Speed (mechanical)||1/2000s||1/4000s|
|Continuous Shooting||5.9 shutter flaps/s||6.1 shutter flaps/s|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||SDXC cards||SDXC cards|
|Single or Dual Card Slots||Single card slot||Single card slot|
|UHS card support||UHS-I||UHS-I|
|Connectivity Specs||Canon G3 X||Canon M100|
|External Flash||Hotshoe||no Hotshoe|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||micro HDMI|
|Microphone Port||External MIC port||no MIC socket|
|Headphone Socket||Headphone port||no Headphone port|
|Wifi Support||Wifi built-in||Wifi built-in|
|Near-Field Communication||NFC built-in||NFC built-in|
|Bluetooth Support||no Bluetooth||Bluetooth built-in|
|Body Specs||Canon G3 X||Canon M100|
|Environmental Sealing||Weathersealed body||not weather sealed|
|Battery Life (CIPA)||300 shots per charge||295 shots per charge|
123 x 77 x 105 mm
(4.8 x 3.0 x 4.1 in)
108 x 67 x 35 mm
(4.3 x 2.6 x 1.4 in)
|Camera Weight||733 g (25.9 oz)||302 g (10.7 oz)|
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