Canon 100D vs G7X
The Canon EOS 100D (called Canon SL1 in some regions) and the Canon PowerShot G7 X are two digital cameras that were officially introduced, respectively, in March 2013 and September 2014. The 100D is a DSLR, while the G7X is a fixed lens compact. The cameras are based on an APS-C (100D) and an one-inch (G7X) sensor. The 100D has a resolution of 17.9 megapixels, whereas the G7X provides 20 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 EOS 100D and the Canon PowerShot G7 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.
The side-by-side display below illustrates the physical size and weight of the Canon 100D and the Canon G7 X. 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 measures are rounded to the nearest millimeter.
The 100D can be obtained in two different colors (black, white), while the G7X 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 G7 X is considerably smaller (42 percent) than the Canon 100D. In this context, it is worth noting that neither the 100D nor the G7X are weather-sealed.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G7X 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.
Concerning battery life, the 100D gets 380 shots out of its LP-E12 battery, while the G7X can take 210 images on a single charge of its NB-13L power pack.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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 100D||117 mm||91 mm||69 mm||407 g||380||n||Mar 2013||549||ebay.com|
|2.||Canon G7 X||103 mm||60 mm||40 mm||304 g||210||n||Sep 2014||699||ebay.com|
|3.||Canon 4000D||129 mm||102 mm||77 mm||436 g||500||n||Feb 2018||399||amazon.com|
|4.||Canon 200D||122 mm||93 mm||70 mm||453 g||650||n||Jun 2017||549||ebay.com|
|5.||Canon 1300D||129 mm||101 mm||78 mm||485 g||500||n||Mar 2016||449||ebay.com|
|6.||Canon G7 X Mark II||106 mm||61 mm||42 mm||319 g||265||n||Feb 2016||699||ebay.com|
|7.||Canon G5 X||112 mm||76 mm||44 mm||353 g||210||n||Oct 2015||799||ebay.com|
|8.||Canon G9 X||98 mm||58 mm||31 mm||209 g||220||n||Oct 2015||529||ebay.com|
|9.||Canon M3||111 mm||68 mm||44 mm||366 g||250||n||Feb 2015||679||ebay.com|
|10.||Canon 1200D||130 mm||100 mm||78 mm||480 g||500||n||Feb 2014||449||ebay.com|
|11.||Canon 700D||133 mm||100 mm||79 mm||580 g||440||n||Mar 2013||649||ebay.com|
|12.||Canon G16||109 mm||76 mm||40 mm||356 g||360||n||Aug 2013||549||ebay.com|
|13.||Canon 650D||133 mm||100 mm||79 mm||575 g||440||n||Jun 2012||849||ebay.com|
|14.||Canon M||109 mm||66 mm||32 mm||298 g||230||n||Jul 2012||599||ebay.com|
|15.||Canon 600D||133 mm||100 mm||80 mm||570 g||440||n||Feb 2011||599||ebay.com|
|16.||Panasonic G6||122 mm||85 mm||71 mm||390 g||340||n||Apr 2013||599||ebay.com|
|17.||Sony RX100 II||102 mm||58 mm||38 mm||281 g||350||n||Jun 2013||749||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 size of the imaging sensor is a crucial determinant 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. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its 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 100D features an APS-C sensor and the Canon G7 X an one-inch sensor. The sensor area in the G7X 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 G7X 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 G7X 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 G7X is a somewhat more recent model (by 1 year and 5 months) than the 100D, and its sensor might have benefitted from technological advances during this time that partly offset its pixel-size disadvantage.
The resolution advantage of the Canon G7 X implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the G7X for good quality output (200 dots per inch) amounts to 27.4 x 18.2 inches or 69.5 x 46.3 cm, for very good quality (250 dpi) 21.9 x 14.6 inches or 55.6 x 37.1 cm, and for excellent quality (300 dpi) 18.2 x 12.2 inches or 46.3 x 30.9 cm. The corresponding values for the Canon 100D are 25.9 x 17.3 inches or 65.8 x 43.9 cm for good quality, 20.7 x 13.8 inches or 52.7 x 35.1 cm for very good quality, and 17.3 x 11.5 inches 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 G7 X are ISO 125 to ISO 12800 (no boost).
In terms of underlying technology, the 100D is build around a CMOS sensor, while the G7X uses a 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.
For many cameras, data on sensor performance has been reported by DXO Mark. 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"). Of the two cameras under consideration, the G7X has a markedly higher DXO score than the 100D (overall score 8 points higher), which will translate into better image quality. The advantage is based on 1.2 bits higher color depth, 1.4 EV in additional dynamic range, and 0.6 stops of reduced low light sensitivity. 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 G7 X||1-inch||20.0||5472||3648||1080/60p||23.0||12.7||556||71|
|6.||Canon G7 X Mark II||1-inch||20.0||5472||3648||1080/60p||21.8||11.9||260||62|
|7.||Canon G5 X||1-inch||20.0||5472||3648||1080/60p||21.4||12.3||471||62|
|8.||Canon G9 X||1-inch||20.0||5472||3648||1080/60p||21.5||12.3||495||63|
|16.||Panasonic G6||Four Thirds||15.9||4608||3456||1080/60p||21.3||11.5||639||61|
|17.||Sony RX100 II||1-inch||20.0||5472||3648||1080/60p||22.5||12.4||483||67|
|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 G7X 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 G7X relies on live view and the rear LCD for framing. The following table reports on some other key feature differences and similarities of the Canon 100D, the Canon G7 X, and comparable cameras.
|1.||Canon 100D||optical||n||3.0 / 1040||fixed||Y||1/4000s||4.9/s||Y||n|
|2.||Canon G7 X||none||n||3.0 / 1040||tilting||Y||1/2000s||6.5/s||Y||Y|
|3.||Canon 4000D||optical||n||2.7 / 230||fixed||n||1/4000s||3.0/s||Y||n|
|4.||Canon 200D||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|5.||Canon 1300D||optical||n||3.0 / 920||fixed||n||1/4000s||3.0/s||Y||n|
|6.||Canon G7 X Mark II||none||n||3.0 / 1040||tilting||Y||1/2000s||8.0/s||Y||Y|
|7.||Canon G5 X||2360||n||3.0 / 1040||swivel||Y||1/2000s||5.9/s||Y||Y|
|8.||Canon G9 X||none||n||3.0 / 1040||fixed||Y||1/2000s||6.0/s||Y||Y|
|9.||Canon M3||optional||n||3.0 / 1040||tilting||Y||1/4000s||4.2/s||Y||n|
|10.||Canon 1200D||optical||n||3.0 / 460||fixed||n||1/4000s||3.0/s||Y||n|
|11.||Canon 700D||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|12.||Canon G16||optical||n||3.0 / 922||fixed||n||1/4000s||2.2/s||Y||Y|
|13.||Canon 650D||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|14.||Canon M||none||n||3.0 / 1040||fixed||Y||1/4000s||4.3/s||n||n|
|15.||Canon 600D||optical||n||3.0 / 1040||swivel||n||1/4000s||3.7/s||Y||n|
|16.||Panasonic G6||1440||n||3.0 / 1036||swivel||Y||1/4000s||7.0/s||Y||n|
|17.||Sony RX100 II||optional||n||3.0 / 1229||tilting||n||1/2000s||10.0/s||Y||Y|
|Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.|
The Canon G7 X has an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.
Concerning the storage of imaging data, both the 100D and the G7X 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 G7 X and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Canon 100D||Y||mono / mono||Y||-||mini||2.0||-||-||-|
|2.||Canon G7 X||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|3.||Canon 4000D||Y||mono / mono||-||-||mini||2.0||Y||Y||-|
|4.||Canon 200D||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|5.||Canon 1300D||Y||mono / mono||-||-||mini||2.0||Y||Y||-|
|6.||Canon G7 X Mark II||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|7.||Canon G5 X||Y||stereo / mono||-||-||mini||2.0||Y||Y||-|
|8.||Canon G9 X||-||stereo / mono||-||-||micro||2.0||Y||Y||-|
|9.||Canon M3||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|10.||Canon 1200D||Y||mono / mono||-||-||mini||2.0||-||-||-|
|11.||Canon 700D||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|12.||Canon G16||Y||stereo / mono||-||-||mini||2.0||Y||-||-|
|13.||Canon 650D||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|14.||Canon M||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|15.||Canon 600D||Y||mono / mono||Y||-||mini||2.0||-||-||-|
|16.||Panasonic G6||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|17.||Sony RX100 II||Y||stereo / mono||-||-||micro||2.0||Y||Y||-|
It is notable that the 100D has a hotshoe, while the G7X does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.
Both the 100D and the G7X have been discontinued, but can regularly be found used on ebay. The 100D was replaced by the Canon 200D, while the G7X was followed by the Canon G7 X Mark II. Further information on the features and operation of the 100D and G7X can be found, respectively, in the Canon 100D Manual (free pdf) or the online Canon G7 X Manual.
So how do things add up? Which of the two cameras – the Canon 100D or the Canon G7 X – 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.
Reasons to prefer the Canon EOS 100D:
- Better low-light sensitivity: Requires less light for good images (0.6 stops ISO advantage).
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- Better sound: Can connect to an external microphone for higher quality sound recording.
- 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 210) on a single battery charge.
- Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
- More heavily discounted: Has been on the market for longer (launched in March 2013).
Arguments in favor of the Canon PowerShot G7 X:
- More detail: Has more megapixels (20 vs 17.9MP), which boosts linear resolution by 6%.
- Better image quality: Scores markedly higher (8 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (1.2 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (1.4 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).
- 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 (6.5 vs 4.9 flaps/sec) to capture the decisive moment.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Ready to shoot: Comes with an integrated lens, while the 100D requires a separate lens.
- More compact: Is smaller (103x60mm vs 117x91mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight even though it has a lens built in (unlike the 100D).
- 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: Was introduced somewhat (1 year and 5 months) more recently.
If the number of relative strengths (bullet points above) is taken as a guide, the G7X is the clear winner of the contest (17 : 9 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 100D and the Canon G7 X 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 incomplete and does no justice, for example, to the way the 100D or the G7X perform in practice. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.
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 (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 100D||4/5||+||..||78/100||4/5||4/5||Mar 2013||549||ebay.com|
|2.||Canon G7 X||4/5||+ +||..||77/100||4.5/5||4.5/5||Sep 2014||699||ebay.com|
|3.||Canon 4000D||2.5/5||o||3/5||..||3.5/5||3.5/5||Feb 2018||399||amazon.com|
|4.||Canon 200D||4/5||+ +||4/5||78/100||4.5/5||4.5/5||Jun 2017||549||ebay.com|
|5.||Canon 1300D||4/5||o||4/5||73/100||4/5||4/5||Mar 2016||449||ebay.com|
|6.||Canon G7 X Mark II||4.5/5||+ +||..||81/100||4.5/5||4.5/5||Feb 2016||699||ebay.com|
|7.||Canon G5 X||5/5||+ +||..||78/100||4.5/5||4.5/5||Oct 2015||799||ebay.com|
|8.||Canon G9 X||3.5/5||+ +||..||..||4.5/5||4.5/5||Oct 2015||529||ebay.com|
|9.||Canon M3||4/5||o||..||75/100||4.5/5||4/5||Feb 2015||679||ebay.com|
|10.||Canon 1200D||3/5||+||..||..||4/5||4.5/5||Feb 2014||449||ebay.com|
|11.||Canon 700D||..||..||..||76/100||4.5/5||4.5/5||Mar 2013||649||ebay.com|
|12.||Canon G16||4/5||+||..||..||4.5/5||4.5/5||Aug 2013||549||ebay.com|
|13.||Canon 650D||4/5||+ +||..||77/100||4.5/5||4.5/5||Jun 2012||849||ebay.com|
|14.||Canon M||3/5||+||..||..||4/5||4/5||Jul 2012||599||ebay.com|
|15.||Canon 600D||3/5||o||..||77/100||4.5/5||4.5/5||Feb 2011||599||ebay.com|
|16.||Panasonic G6||4/5||+ +||..||..||5/5||4.5/5||Apr 2013||599||ebay.com|
|17.||Sony RX100 II||5/5||+ +||..||79/100||4.5/5||4.5/5||Jun 2013||749||ebay.com|
|Notes: (+ +) 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. Hence, a score should always be seen in the context of the camera's market launch date and its price, 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 100D vs Fujifilm GFX 100
- Canon 100D vs Fujifilm X-E2
- Canon 100D vs Fujifilm X-E2S
- Canon 100D vs Fujifilm X-T4
- Canon 100D vs Olympus E-PL2
- Canon 100D vs Sony RX100 III
- Canon G7 X vs Canon M
- Canon G7 X vs Fujifilm X20
- Canon G7 X vs Leica S3
- Canon G7 X vs Nikon 1 V2
- Canon G7 X vs Panasonic FZ200
- Canon G7 X vs Sony RX100 IV
Specifications: Canon 100D vs Canon G7 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 G7 X|
|Camera Type||Digital single lens reflex||Fixed lens compact camera|
|Camera Lens||Canon EF mount lenses||24-100mm f/1.8-2.8|
|Launch Date||March 2013||September 2014|
|Launch Price||USD 549||USD 699|
|Sensor Specs||Canon 100D||Canon G7 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 - 12,800 ISO||125 - 12,800 ISO|
|ISO Boost||100 - 25,600 ISO||no Enhancement|
|Image Processor||DIGIC 5||DIGIC 6|
|DXO Sensor Quality (score)||63||71|
|DXO Color Depth (bits)||21.8||23.0|
|DXO Dynamic Range (EV)||11.3||12.7|
|DXO Low Light (ISO)||843||556|
|Screen Specs||Canon 100D||Canon G7 X|
|Viewfinder Type||Optical viewfinder||no viewfinder|
|Viewfinder Field of View||95%|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||1040k dots||1040k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Shooting Specs||Canon 100D||Canon G7 X|
|Focus System||Phase-detect AF||Contrast-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/2000s|
|Continuous Shooting||4.9 shutter flaps/s||6.5 shutter flaps/s|
|Time-Lapse Photography||no Intervalometer||Intervalometer built-in|
|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 100D||Canon G7 X|
|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|
|Wifi Support||no Wifi||Wifi built-in|
|Near-Field Communication||no NFC||NFC built-in|
|Body Specs||Canon 100D||Canon G7 X|
|Battery Life (CIPA)||380 shots per charge||210 shots per charge|
117 x 91 x 69 mm
(4.6 x 3.6 x 2.7 in)
103 x 60 x 40 mm
(4.1 x 2.4 x 1.6 in)
|Camera Weight||407 g (14.4 oz)||304 g (10.7 oz)|
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