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Canon 100D versus Canon G1 X Mark III

The Canon EOS 100D (called Canon SL1 in some regions) and the Canon PowerShot G1 X Mark III are two digital cameras that were revealed to the public, respectively, in March 2013 and October 2017. The 100D is a DSLR, while the G1X Mark III is a fixed lens compact. Both cameras are equipped with an APS-C sensor. The 100D has a resolution of 17.9 megapixel, whereas the G1X Mark III provides 24 MP. Read on to find out how these two cameras compare with respect to their size, their sensors, their features, and their reception by expert reviewers.

Body comparison: Canon 100D vs Canon G1 X Mark III

An illustration of the physical size and weight of the Canon 100D and the Canon G1 X Mark III is provided in the side-by-side display below. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth measures are rounded to the nearest millimeter. If you prefer, you can also use the toggle button to switch to a comparison in percentage terms (in this case, the camera on the left – the 100D – represents the basis or 100 percent across all the size and weight measures).

Snapsort Canon 100D vs Canon G1 X Mark III
Compare 100D versus G1X Mark III top
Compare 100D and G1X Mark III rear

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 notably smaller (16 percent) than the Canon 100D. It is noteworthy in this context that the G1X Mark III 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 G1X Mark III has a lens build 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 find an overview of optics 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 G1X Mark III can take 200 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, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Canon 100D» 4.6 in 3.6 in 2.7 in 14.4 oz 380 n Mar 2013 549- i
Canon G1 X Mark III« 4.5 in 3.1 in 2.0 in 14.1 oz 200 Y Oct 2017 1,299 i i
Canon 4000D« » 5.1 in 4.0 in 3.0 in 15.4 oz 500 n Feb 2018 399 i i
Canon 200D« » 4.8 in 3.7 in 2.8 in 16.0 oz 650 n Jun 2017 549 i i
Canon 6D Mark II« » 5.7 in 4.4 in 3.0 in 27.0 oz 1200 Y Jun 2017 1,999 i i
Canon 80D« » 5.5 in 4.1 in 3.1 in 25.8 oz 960 Y Feb 2016 1,199 i i
Canon 1D X Mark II« » 6.2 in 6.6 in 3.3 in 54.0 oz 1210 Y Feb 2016 5,999 i i
Canon 1200D« » 5.1 in 3.9 in 3.1 in 16.9 oz 500 n Feb 2014 449- i
Canon 700D« » 5.2 in 3.9 in 3.1 in 20.5 oz 440 n Mar 2013 649- i
Canon G16« » 4.3 in 3.0 in 1.6 in 12.6 oz 360 n Aug 2013 549 i i
Canon M« » 4.3 in 2.6 in 1.3 in 10.5 oz 230 n Jul 2012 599- i
Canon 650D« » 5.2 in 3.9 in 3.1 in 20.3 oz 440 n Jun 2012 849- i
Canon 600D« » 5.2 in 3.9 in 3.1 in 20.1 oz 440 n Feb 2011 599- i
Canon 500D« » 5.1 in 3.9 in 2.4 in 18.3 oz 400 n Mar 2009 799- i
Nikon D7500« » 5.4 in 4.1 in 2.9 in 25.4 oz 950 Y Apr 2017 1,299 i i
Panasonic G6« » 4.8 in 3.3 in 2.8 in 13.8 oz 340 n Apr 2013 599- i
Sony RX10 III« » 5.2 in 3.7 in 5.0 in 37.1 oz 420 Y Mar 2016 1,499- i

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.

 

Sensor comparison: Canon 100D vs Canon G1 X Mark III

The imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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. 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.

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.

Canon 100D and Canon G1 X Mark III sensor measures

While the two cameras under review share the same sensor size, the G1X Mark III offers a higher resolution of 24 megapixel, compared with 17.9 MP of the 100D. This megapixel advantage translates into a 16 percent gain in linear resolution. On the other hand, these sensor specs imply that the G1X Mark III has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.72μm versus 4.31μm for the 100D). However, it should be noted that the G1X Mark III is much more recent (by 4 years and 6 months) than the 100D, and its sensor will have benefitted from technological advances during this time that compensate for the smaller pixel size.

100D versus G1X Mark III MP

For most cameras, data on sensor performance has been reported by DXO Mark. 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 following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

Sensor Characteristics
  Camera Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Canon 100D» APS-C 17.9 5184 34561080/30p21.811.384363
Canon G1 X Mark III« APS-C 24.0 6000 40001080/60p----
Canon 4000D« » APS-C 17.9 5184 34561080/30p21.911.469563
Canon 200D« » APS-C 24.0 6000 40001080/60p23.613.4104179
Canon 6D Mark II« » Full Frame 26.0 6240 41601080/60p24.411.9286285
Canon 80D« » APS-C 24.0 6000 40001080/60p23.613.2113579
Canon 1D X Mark II« » Full Frame 20.0 5472 36484K/60p24.113.5320788
Canon 1200D« » APS-C 17.9 5184 34561080/30p21.911.372463
Canon 700D« » APS-C 17.9 5184 34561080/30p21.711.268161
Canon G16« » 1/1.7 12.0 4000 30001080/60p21.011.723054
Canon M« » APS-C 17.9 5184 34561080/30p22.111.282765
Canon 650D« » APS-C 17.9 5184 34561080/30p21.711.272262
Canon 600D« » APS-C 17.9 5184 34561080/30p22.111.579365
Canon 500D« » APS-C 15.1 4752 31681080/20p21.711.566363
Nikon D7500« » APS-C 20.7 5568 37124K/30p24.314.0148386
Panasonic G6« » Four Thirds 15.9 4608 34561080/60p21.311.563961
Sony RX10 III« » 1-inch 20.0 5472 36484K/30p23.112.647270

Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the G1X Mark III provides a faster frame rate than the 100D. It can shoot movie footage at 1080/60p, while the 100D is limited to 1080/30p.

 

Feature comparison: Canon 100D vs Canon G1 X Mark III

Apart from 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 100D 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 100D and Canon G1 X Mark III in connection with corresponding information for a sample of similar cameras. If you need more detail on the specs, you can find comprehensive listings, for example, in the dpreview camera hub.

Core Features
  Camera Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec))
Build-in
Flash
(yes/no)
Build-in
Image
Stab
Canon 100D»optical n 3.0 1040 fixed Y 4000 4.9 Y n
Canon G1 X Mark III«2360 n 3.0 1040 swivel Y 2000 9.0 Y Y
Canon 4000D« »optical n 2.7 230 fixed n 4000 3.0 Y n
Canon 200D« »optical n 3.0 1040 swivel Y 4000 5.0 Y n
Canon 6D Mark II« »optical Y 3.0 1040 swivel Y 4000 6.5 n n
Canon 80D« »optical Y 3.0 1040 swivel Y 8000 7.0 Y n
Canon 1D X Mark II« »optical Y 3.2 1620 fixed Y 8000 16.0 n n
Canon 1200D« »optical n 3.0 460 fixed n 4000 3.0 Y n
Canon 700D« »optical n 3.0 1040 swivel Y 4000 5.0 Y n
Canon G16« »optical n 3.0 922 fixed n 4000 2.2 Y Y
Canon M« »- n 3.0 1040 fixed Y 4000 4.3 n n
Canon 650D« »optical n 3.0 1040 swivel Y 4000 5.0 Y n
Canon 600D« »optical n 3.0 1040 swivel n 4000 3.7 Y n
Canon 500D« »optical n 3.0 920 fixed n 4000 3.4 Y n
Nikon D7500« »optical Y 3.2 922 tilting Y 8000 8.0 Y n
Panasonic G6« »1440 n 3.0 1036 swivel Y 4000 7.0 Y n
Sony RX10 III« »2359 Y 3.0 1229 tilting n 2000 14.0 Y Y

The G1X Mark III is a current model that online retailers, such as amazon, will have in stock. 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.

Review summary: Canon 100D vs Canon G1 X Mark III

So what is the bottom line? Which of the two cameras – the Canon 100D or the Canon G1 X Mark III – has the upper hand? Below is a summary of the relative strengths of each of the two contestants.


Reasons to prefer the Canon EOS 100D:

  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Faster shutter: Has higher mechanical shutter speed (4000/sec vs 2000/sec) to freeze action.
  • More flexible: Can take a variety of interchangeable lenses, including specialty optics.
  • Longer lasting: Can take more shots (380 versus 200) on a single battery charge.
  • More heavily discounted: Has been available for much longer (launched in March 2013).


Advantages of the Canon PowerShot G1 X Mark III:

  • More detail: Has more megapixels (24 vs 17.9MP), which boosts linear resolution by 16%.
  • Better video: Provides higher movie framerates (1080/60p versus 1080/30p).
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • More flexible LCD: Has swivel screen for odd-angle shots in portrait or landscape orientation.
  • Faster burst: Shoots at higher frequency (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 (115x78mm vs 117x91mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight even though it has a lens build in (unlike the 100D).
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Sharper images: Has stabilization technology build-in to reduce the impact of hand-shake.
  • More modern: Reflects 4 years and 6 months of technical progress since the 100D launch.

If the count of relative strengths (bullet points above) is taken as a measure, the G1X Mark III is the clear winner of the contest (11 : 5 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.

100D 05:11 G1X Mark III

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it says nothing about, for example, the handling, responsiveness, and overall imaging quality of the 100D and the G1X Mark III 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 why expert reviews are important. The table below summarizes the assessments of some of the best known camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). The full reviews are available by clicking on the site logo in the table header.

Review scores
  Camera cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Canon 100D»Rec78/1004/54/54/5 Mar 2013 549- i
Canon G1 X Mark III«Rec79/1004.5/5-4.5/5 Oct 2017 1,299 i i
Canon 4000D« »rev---3.5/5 Feb 2018 399 i i
Canon 200D« »HiRec78/1004.5/54.5/54.5/5 Jun 2017 549 i i
Canon 6D Mark II« »Rec80/1004.5/54/54/5 Jun 2017 1,999 i i
Canon 80D« »HiRec84/1004.5/54.5/54.5/5 Feb 2016 1,199 i i
Canon 1D X Mark II« »-89/1004.5/55/54.5/5 Feb 2016 5,999 i i
Canon 1200D« »Rec-4/54/54.5/5 Feb 2014 449- i
Canon 700D« »-76/1004.5/54.5/54.5/5 Mar 2013 649- i
Canon G16« »Rec-4.5/54.5/54.5/5 Aug 2013 549 i i
Canon M« »Rec-4/53.5/54/5 Jul 2012 599- i
Canon 650D« »HiRec77/1004.5/54.5/54.5/5 Jun 2012 849- i
Canon 600D« »rev77/1004.5/55/54.5/5 Feb 2011 599- i
Canon 500D« »HiRec74/1004.5/55/54.5/5 Mar 2009 799- i
Nikon D7500« »HiRec86/1005/54.5/54.5/5 Apr 2017 1,299 i i
Panasonic G6« »HiRec-5/5-4.5/5 Apr 2013 599- i
Sony RX10 III« »Rec84/1004.5/54.5/54.5/5 Mar 2016 1,499- i

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.

 

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 your choice using the following search menu. An an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool. If you cannot find the camera you are interested in, please contact me, and I will try to locate and add the respective data to the application.

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