Canon 100D vs G3X
The Canon EOS 100D (called Canon SL1 in some regions) and the Canon PowerShot G3 X are two digital cameras that were revealed to the public, respectively, in March 2013 and June 2015. The 100D is a DSLR, while the G3X is a fixed lens compact. The cameras are based on an APS-C (100D) and an one-inch (G3X) sensor. The 100D has a resolution of 17.9 megapixels, whereas the G3X provides 20 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Canon 100D||Canon G3 X|
|Digital single lens reflex||Fixed lens compact camera|
|Canon EF mount lenses||24-600mm f/2.8-5.6|
|17.9 MP, APS-C Sensor||20 MP, 1" Sensor|
|1080/30p Video||1080/60p Video|
|ISO 100-12800 (100-25600)||ISO 125-12800 (125-25600)|
|Optical viewfinder||Viewfinder optional|
|3.0" LCD, 1040k dots||3.2" LCD, 1620k dots|
|Fixed touchscreen||Tilting touchscreen|
|4.9 shutter flaps per second||5.9 shutter flaps per second|
|Not weather sealed||Weathersealed body|
|380 shots per battery charge||300 shots per battery charge|
|117 x 91 x 69 mm, 407 g||123 x 77 x 105 mm, 733 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 100D and the Canon PowerShot G3 X? 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.
An illustration of the physical size and weight of the Canon 100D and the Canon G3 X is provided 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 size dimensions are rounded to the nearest millimeter.
The 100D 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 G3 X is notably smaller (11 percent) than the Canon 100D. It is noteworthy in this context that the G3X is splash and dust-proof, while the 100D 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 100D 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 100D 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, just use the right or left arrows in the table to switch to the respective camera. Alternatively, you can also navigate to the CAM-parator app and make your selection from the full list of cameras there.
|Canon 100D»||4.6 in||3.6 in||2.7 in||14.4 oz||380||n||Mar 2013||549||Canon 100D|
|Canon G3 X«||4.8 in||3.0 in||4.1 in||25.9 oz||300||Y||Jun 2015||999||Canon G3 X|
|Canon 4000D« »||5.1 in||4.0 in||3.0 in||15.4 oz||500||n||Feb 2018||399||Canon 4000D|
|Canon 200D« »||4.8 in||3.7 in||2.8 in||16.0 oz||650||n||Jun 2017||549||Canon 200D|
|Canon 80D« »||5.5 in||4.1 in||3.1 in||25.8 oz||960||Y||Feb 2016||1,199||Canon 80D|
|Canon G9 X« »||3.9 in||2.3 in||1.2 in||7.4 oz||220||n||Oct 2015||529||Canon G9 X|
|Canon 7D II« »||5.9 in||4.4 in||3.1 in||32.1 oz||670||Y||Sep 2014||1,799||Canon 7D II|
|Canon 1200D« »||5.1 in||3.9 in||3.1 in||16.9 oz||500||n||Feb 2014||449||Canon 1200D|
|Canon G7 X« »||4.1 in||2.4 in||1.6 in||10.7 oz||210||n||Sep 2014||699||Canon G7 X|
|Canon 70D« »||5.5 in||4.1 in||3.1 in||26.6 oz||920||Y||Jul 2013||1,199||Canon 70D|
|Canon 700D« »||5.2 in||3.9 in||3.1 in||20.5 oz||440||n||Mar 2013||649||Canon 700D|
|Canon G16« »||4.3 in||3.0 in||1.6 in||12.6 oz||360||n||Aug 2013||549||Canon G16|
|Canon 650D« »||5.2 in||3.9 in||3.1 in||20.3 oz||440||n||Jun 2012||849||Canon 650D|
|Canon M« »||4.3 in||2.6 in||1.3 in||10.5 oz||230||n||Jul 2012||599||Canon M|
|Canon 600D« »||5.2 in||3.9 in||3.1 in||20.1 oz||440||n||Feb 2011||599||Canon 600D|
|Panasonic FZ1000« »||5.4 in||3.9 in||5.2 in||29.3 oz||360||n||Jun 2014||899||Panasonic FZ1000|
|Panasonic G6« »||4.8 in||3.3 in||2.8 in||13.8 oz||340||n||Apr 2013||599||Panasonic G6|
|Note: Measurements and pricing do not include easily detachable parts, such as 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 size of the imaging sensor is a crucial determinant of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and 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 more expensive and lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Canon 100D features an APS-C sensor and the Canon G3 X an one-inch sensor. The sensor area in the G3X is 65 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 2.7. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Technology-wise, the G3X uses a more advanced image processing engine (DIGIC 6) than the 100D (DIGIC 5), with benefits for noise reduction, color accuracy, and processing speed.
Despite having a smaller sensor, the G3X offers a higher resolution of 20 megapixels, compared with 17.9 MP of the 100D. 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 2.41μm versus 4.31μm for the 100D). However, it should be noted that the G3X is much more recent (by 2 years and 2 months) than the 100D, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently.
The resolution advantage of the Canon G3 X implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the G3X for good quality output (200 dots per inch) amounts to 27.4 x 18.2 inch or 69.5 x 46.3 cm, for very good quality (250 dpi) 21.9 x 14.6 inch or 55.6 x 37.1 cm, and for excellent quality (300 dpi) 18.2 x 12.2 inch or 46.3 x 30.9 cm. The corresponding values for the Canon 100D are 25.9 x 17.3 inch or 65.8 x 43.9 cm for good quality, 20.7 x 13.8 inch or 52.7 x 35.1 cm for very good quality, and 17.3 x 11.5 inch or 43.9 x 29.3 cm for excellent quality prints.
The 100D has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Canon EOS 100D has a native sensitivity range from ISO 100 to ISO 12800, which can be extended to ISO 100-25600. The corresponding ISO settings for the Canon PowerShot G3 X are ISO 125 to ISO 12800, with the possibility to increase the ISO range to 125-25600.
Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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 Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar imaging performance. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|Canon 100D||APS-C||17.9||5184||3456||1080/30p||21.8||11.3||843||63||Canon 100D|
|Canon G3 X||1-inch||20.0||5472||3648||1080/60p||21.4||12.3||521||63||Canon G3 X|
|Canon 4000D||APS-C||17.9||5184||3456||1080/30p||21.9||11.4||695||63||Canon 4000D|
|Canon 200D||APS-C||24.0||6000||4000||1080/60p||23.6||13.4||1041||79||Canon 200D|
|Canon 80D||APS-C||24.0||6000||4000||1080/60p||23.6||13.2||1135||79||Canon 80D|
|Canon G9 X||1-inch||20.0||5472||3648||1080/60p||21.5||12.3||495||63||Canon G9 X|
|Canon 7D II||APS-C||20.0||5472||3648||1080/60p||22.4||11.8||1082||70||Canon 7D II|
|Canon 1200D||APS-C||17.9||5184||3456||1080/30p||21.9||11.3||724||63||Canon 1200D|
|Canon G7 X||1-inch||20.0||5472||3648||1080/60p||23.0||12.7||556||71||Canon G7 X|
|Canon 70D||APS-C||20.0||5472||3648||1080/30p||22.5||11.6||926||68||Canon 70D|
|Canon 700D||APS-C||17.9||5184||3456||1080/30p||21.7||11.2||681||61||Canon 700D|
|Canon G16||1/1.7||12.0||4000||3000||1080/60p||21.0||11.7||230||54||Canon G16|
|Canon 650D||APS-C||17.9||5184||3456||1080/30p||21.7||11.2||722||62||Canon 650D|
|Canon M||APS-C||17.9||5184||3456||1080/30p||22.1||11.2||827||65||Canon M|
|Canon 600D||APS-C||17.9||5184||3456||1080/30p||22.1||11.5||793||65||Canon 600D|
|Panasonic FZ1000||1-inch||20.0||5472||3648||4K/30p||22.1||11.7||517||64||Panasonic FZ1000|
|Panasonic G6||Four Thirds||15.9||4608||3456||1080/60p||21.3||11.5||639||61||Panasonic G6|
Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the G3X provides a faster frame rate than the 100D. It can shoot movie footage at 1080/60p, while the 100D is limited to 1080/30p.
Apart from body and sensor, cameras can and do differ across a range of features. For example, the 100D has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the G3X relies on live view and the rear LCD for framing. 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 100D and Canon G3 X along with similar information for a selection of comparators.
|Canon 100D||optical||n||3.0||1040||fixed||Y||1/4000s||4.9||Y||n||Canon 100D|
|Canon G3 X||optional||n||3.2||1620||tilting||Y||1/2000s||5.9||Y||Y||Canon G3 X|
|Canon 4000D||optical||n||2.7||230||fixed||n||1/4000s||3.0||Y||n||Canon 4000D|
|Canon 200D||optical||n||3.0||1040||swivel||Y||1/4000s||5.0||Y||n||Canon 200D|
|Canon 80D||optical||Y||3.0||1040||swivel||Y||1/8000s||7.0||Y||n||Canon 80D|
|Canon G9 X||none||n||3.0||1040||fixed||Y||1/2000s||6.0||Y||Y||Canon G9 X|
|Canon 7D II||optical||Y||3.0||1040||fixed||n||1/8000s||10.0||Y||n||Canon 7D II|
|Canon 1200D||optical||n||3.0||460||fixed||n||1/4000s||3.0||Y||n||Canon 1200D|
|Canon G7 X||none||n||3.0||1040||tilting||Y||1/2000s||6.5||Y||Y||Canon G7 X|
|Canon 70D||optical||Y||3.0||1040||swivel||Y||1/8000s||7.0||Y||n||Canon 70D|
|Canon 700D||optical||n||3.0||1040||swivel||Y||1/4000s||5.0||Y||n||Canon 700D|
|Canon G16||optical||n||3.0||922||fixed||n||1/4000s||2.2||Y||Y||Canon G16|
|Canon 650D||optical||n||3.0||1040||swivel||Y||1/4000s||5.0||Y||n||Canon 650D|
|Canon M||none||n||3.0||1040||fixed||Y||1/4000s||4.3||n||n||Canon M|
|Canon 600D||optical||n||3.0||1040||swivel||n||1/4000s||3.7||Y||n||Canon 600D|
|Panasonic FZ1000||2359||n||3.0||921||swivel||n||1/4000s||12.0||Y||Y||Panasonic FZ1000|
|Panasonic G6||1440||n||3.0||1036||swivel||Y||1/4000s||7.0||Y||n||Panasonic G6|
Concerning the storage of imaging data, both the 100D and the G3X 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 100D and Canon PowerShot G3 X and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Canon 100D||Y||mono||mono||Y||-||mini||2.0||-||-||-||Canon 100D|
|Canon G3 X||Y||stereo||mono||Y||Y||mini||2.0||Y||Y||-||Canon G3 X|
|Canon 4000D||Y||mono||mono||-||-||mini||2.0||Y||Y||-||Canon 4000D|
|Canon 200D||Y||stereo||mono||Y||-||mini||2.0||Y||Y||Y||Canon 200D|
|Canon 80D||Y||stereo||mono||Y||Y||mini||2.0||Y||Y||-||Canon 80D|
|Canon G9 X||-||stereo||mono||-||-||micro||2.0||Y||Y||-||Canon G9 X|
|Canon 7D II||Y||stereo||mono||Y||Y||mini||3.0||-||-||-||Canon 7D II|
|Canon 1200D||Y||mono||mono||-||-||mini||2.0||-||-||-||Canon 1200D|
|Canon G7 X||-||stereo||mono||-||-||micro||2.0||Y||Y||-||Canon G7 X|
|Canon 70D||Y||stereo||mono||Y||-||mini||2.0||Y||-||-||Canon 70D|
|Canon 700D||Y||stereo||mono||Y||-||mini||2.0||-||-||-||Canon 700D|
|Canon G16||Y||stereo||mono||-||-||mini||2.0||Y||-||-||Canon G16|
|Canon 650D||Y||stereo||mono||Y||-||mini||2.0||-||-||-||Canon 650D|
|Canon M||Y||stereo||mono||Y||-||mini||2.0||-||-||-||Canon M|
|Canon 600D||Y||mono||mono||Y||-||mini||2.0||-||-||-||Canon 600D|
|Panasonic FZ1000||Y||stereo||mono||Y||-||micro||2.0||Y||Y||-||Panasonic FZ1000|
|Panasonic G6||Y||stereo||mono||Y||-||mini||2.0||Y||Y||-||Panasonic G6|
It is notable that the G3X offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the 100D does not offer wifi capability.
The G3X is a recent model that features in the current product line-up of Canon. In contrast, the 100D has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the 100D was succeeded by the Canon 200D. 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 how do things add up? Which of the two cameras – the Canon 100D or the Canon G3 X – has the upper hand? Is one clearly better than the other? Below is a summary of the relative strengths of each of the two contestants.
Arguments in favor of the Canon EOS 100D:
- Better low-light sensitivity: Requires less light for good images (0.7 stops ISO advantage).
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- Easier framing: Has an optical viewfinder for image composition and settings control.
- 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 (380 versus 300) on a single battery charge.
- More heavily discounted: Has been available for much longer (launched in March 2013).
Advantages of the Canon PowerShot G3 X:
- More detail: Has more megapixels (20 vs 17.9MP), which boosts linear resolution by 6%.
- More dynamic range: Captures a broader range of light and dark details (1 EV of extra DR).
- Better jpgs: Has a more modern image processing engine (DIGIC 6 vs DIGIC 5).
- Better video: Provides higher movie framerates (1080/60p versus 1080/30p).
- Better sound control: Has a headphone port that enables audio monitoring while recording.
- 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).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster burst: Shoots at higher frequency (5.9 vs 4.9 flaps/sec) to capture the decisive moment.
- Ready to shoot: Comes with an integrated lens, while the 100D requires a separate lens.
- More compact: Is smaller (123x77mm vs 117x91mm) and will fit more readily into a bag.
- 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.
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- More modern: Reflects 2 years and 2 months of technical progress since the 100D launch.
If the number of relative strengths (bullet points above) is taken as a guide, the G3X is the clear winner of the contest (17 : 7 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 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 100D and the Canon G3 X place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Superzoom 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 says little about, for example, the shooting experience and imaging performance of the 100D and the G3X in practical situations. 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 where reviews by experts come in. The table below provides a synthesis of the camera assessments of some of the best known photo-gear review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.
The above review scores should be interpreted with care, 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 comparing ratings of very distinct cameras or ones that are far apart in terms of their release date 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 would like to check on the differences and similarities of other camera models, just make your choice using the following search menu. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
- Canon 100D vs Canon M6 Mark II
- Canon 100D vs Leica CL
- Canon 100D vs Leica S2
- Canon 100D vs Nikon D5
- Canon 100D vs Panasonic GX80
- Canon 100D vs Sony HX95
- Canon G3 X vs Epson R-D1
- Canon G3 X vs Kodak S-1
- Canon G3 X vs Olympus E-5
- Canon G3 X vs Olympus E-520
- Canon G3 X vs Olympus E-M1 II
- Canon G3 X vs Samsung NX1
Specifications: Canon 100D vs Canon G3 X
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 100D||Canon G3 X|
|Camera Type||Digital single lens reflex||Fixed lens compact camera|
|Camera Lens||Canon EF mount lenses||24-600mm f/2.8-5.6|
|Launch Date||March 2013||June 2015|
|Launch Price||USD 549||USD 999|
|Sensor Specs||Canon 100D||Canon G3 X|
|Sensor Format||APS-C Sensor||1" Sensor|
|Sensor Size||22.3 x 14.9 mm||13.2 x 8.8 mm|
|Sensor Area||332.27 mm2||116.16 mm2|
|Sensor Diagonal||26.8 mm||15.9 mm|
|Sensor Resolution||17.9 Megapixels||20 Megapixels|
|Image Resolution||5184 x 3456 pixels||5472 x 3648 pixels|
|Pixel Pitch||4.31 μm||2.41 μm|
|Pixel Density||5.39 MP/cm2||17.18 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/30p Video||1080/60p Video|
|ISO Setting||100-12800 ISO||125-12800 ISO|
|ISO Boost||100-25600 ISO||125-25600 ISO|
|Image Processor||DIGIC 5||DIGIC 6|
|DXO Sensor Quality (score)||63||63|
|DXO Color Depth (bits)||21.8||21.4|
|DXO Dynamic Range (EV)||11.3||12.3|
|DXO Low Light (ISO)||843||521|
|Screen Specs||Canon 100D||Canon G3 X|
|Viewfinder Type||Optical viewfinder||Viewfinder optional|
|Viewfinder Field of View||95%|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0 inch||3.2 inch|
|LCD Resolution||1040k dots||1620k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Shooting Specs||Canon 100D||Canon G3 X|
|Focus System||Phase-detect AF||Contrast-detect AF|
|Manual Focusing Aid||No Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000/s||1/2000/s|
|Continuous Shooting||4.9 shutter flaps/s||5.9 shutter flaps/s|
|Fill Flash||Build-in Flash||Build-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 100D||Canon G3 X|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||mini HDMI|
|Microphone Port||External MIC port||External MIC port|
|Headphone Socket||no Headphone port||Headphone port|
|Wifi Support||no Wifi||Wifi built-in|
|Near-Field Communication||no NFC||NFC built-in|
|Body Specs||Canon 100D||Canon G3 X|
|Environmental Sealing||Not weather sealed||Weathersealed body|
|Battery Life (CIPA)||380 shots per charge||300 shots per charge|
117 x 91 x 69 mm
(4.6 x 3.6 x 2.7 in)
123 x 77 x 105 mm
(4.8 x 3.0 x 4.1 in)
|Camera Weight||407 g (14.4 oz)||733 g (25.9 oz)|
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