Canon 100D versus Canon M3
The Canon EOS 100D (called Canon SL1 in some regions) and the Canon EOS M3 are two digital cameras that were announced, respectively, in March 2013 and February 2015. The 100D is a DSLR, while the M3 is a mirrorless interchangeable lens camera. Both cameras are equipped with an APS-C sensor. The 100D has a resolution of 17.9 megapixel, whereas the M3 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 M3
The side-by-side display below illustrates the physical size and weight of the Canon 100D and the Canon M3. Three successive views from the front, the top, and the rear are shown. All size dimensions are rounded to the nearest millimeter. You can also use the toggle button to switch to a percentage comparison if you prefer that the measures are being expressed in relative terms (in this case, the camera on the left side – the 100D – represents the basis for the calculations across all the size and weight measures).
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon M3 is notably smaller (29 percent) than the Canon 100D. Moreover, the M3 is markedly lighter (10 percent) than the 100D. In this context, it is worth noting that neither the 100D nor the M3 are weather-sealed.
The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. Hence, you might want to study the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.
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
|Canon 100D (⇒ rgt)||4.6 in||3.6 in||2.7 in||14.4 oz||380||no||2013||549||discont.||check|
|Canon M3 (⇒ lft)||4.4 in||2.7 in||1.7 in||12.9 oz||250||no||2015||679||discont.||check|
|Canon 200D (⇒ lft | rgt)||4.8 in||3.7 in||2.8 in||16.0 oz||650||no||2017||549||latest||check|
|Canon M100 (⇒ lft | rgt)||4.3 in||2.6 in||1.4 in||10.7 oz||295||no||2017||499||latest||check|
|Canon M6 (⇒ lft | rgt)||4.4 in||2.7 in||1.8 in||13.8 oz||295||no||2017||779||latest||check|
|Canon M5 (⇒ lft | rgt)||4.6 in||3.5 in||2.4 in||15.1 oz||295||no||2016||979||latest||check|
|Canon T6i (⇒ lft | rgt)||5.2 in||4.0 in||3.1 in||19.6 oz||440||no||2015||749||discont.||check|
|Canon 1200D (⇒ lft | rgt)||5.1 in||3.9 in||3.1 in||16.9 oz||500||no||2014||449||discont.||check|
|Canon 700D (⇒ lft | rgt)||5.2 in||3.9 in||3.1 in||20.5 oz||440||no||2013||649||discont.||check|
|Canon 70D (⇒ lft | rgt)||5.5 in||4.1 in||3.1 in||26.6 oz||920||YES||2013||1,199||discont.||check|
|Canon G16 (⇒ lft | rgt)||4.3 in||3.0 in||1.6 in||12.6 oz||360||no||2013||549||latest||check|
|Canon M (⇒ lft | rgt)||4.3 in||2.6 in||1.3 in||10.5 oz||230||no||2012||599||discont.||check|
|Canon 650D (⇒ lft | rgt)||5.2 in||3.9 in||3.1 in||20.3 oz||440||no||2012||849||discont.||check|
|Canon 600D (⇒ lft | rgt)||5.2 in||3.9 in||3.1 in||20.1 oz||440||no||2011||599||discont.||check|
|Canon 500D (⇒ lft | rgt)||5.1 in||3.9 in||2.4 in||18.3 oz||400||no||2009||799||discont.||check|
|Panasonic G6 (⇒ lft | rgt)||4.8 in||3.3 in||2.8 in||13.8 oz||340||no||2013||599||discont.||check|
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. The 100D was launched at a somewhat lower price (by 19 percent) than the M3, which makes it more attractive for photographers on a tight budget. 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 M3
The size of the sensor inside a digital camera is one of the key determinants 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 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.
While the two cameras under review share the same sensor size, the M3 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 M3 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 M3 is a somewhat more recent model (by 1 year and 10 months) than the 100D, and its sensor might have benefitted from technological advances during this time that at least partly compensate for the smaller pixel size.
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 M3 has a markedly higher DXO score than the 100D (overall score 9 points higher), which will translate into better image quality. The advantage is based on 1 bits higher color depth, 0.5 EV in additional dynamic range, and 0.5 stops in additional 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.
|Canon 100D (⇒ rgt)||APS-C||17.9||5184||3456||1080/30p||21.8||11.3||843||63|
|Canon M3 (⇒ lft)||APS-C||24.0||6000||4000||1080/30p||22.8||11.8||1169||72|
|Canon 200D (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/60p||23.6||13.4||1041||79|
|Canon M100 (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/60p||23.5||12.9||1272||78|
|Canon M6 (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/60p||..||..||..||..|
|Canon M5 (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/60p||23.4||12.4||1262||77|
|Canon T6i (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/60p||22.7||12.0||919||71|
|Canon 1200D (⇒ lft | rgt)||APS-C||17.9||5184||3456||1080/30p||21.9||11.3||724||63|
|Canon 700D (⇒ lft | rgt)||APS-C||17.9||5184||3456||1080/30p||21.7||11.2||681||61|
|Canon 70D (⇒ lft | rgt)||APS-C||20.0||5472||3648||1080/30p||22.5||11.6||926||68|
|Canon G16 (⇒ lft | rgt)||1/1.7||12.0||4000||3000||1080/60p||21.0||11.7||230||54|
|Canon M (⇒ lft | rgt)||APS-C||17.9||5184||3456||1080/30p||22.1||11.2||827||65|
|Canon 650D (⇒ lft | rgt)||APS-C||17.9||5184||3456||1080/30p||21.7||11.2||722||62|
|Canon 600D (⇒ lft | rgt)||APS-C||17.9||5184||3456||1080/30p||22.1||11.5||793||65|
|Canon 500D (⇒ lft | rgt)||APS-C||15.1||4752||3168||1080/20p||21.7||11.5||663||63|
|Panasonic G6 (⇒ lft | rgt)||Four Thirds||15.9||4608||3456||1080/60p||21.3||11.5||639||61|
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, and both provide the same movie specifications (1080/30p).
Feature comparison: Canon 100D vs Canon M3
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 M3 relies on live view and the rear LCD for framing. The table below summarizes some of the other core capabilities of the Canon 100D and Canon M3 in connection with corresponding information for a sample of similar cameras. The full specs-sheets can be found in the camera manual or, for example, in the dpreview camera hub.
|Canon 100D (⇒ rgt)||optical||no||3.0||1040||fixed||YES||4000||4.9||9.4||no|
|Canon M3 (⇒ lft)||no||no||3.0||1040||tilting||YES||4000||4.2||5||no|
|Canon 200D (⇒ lft | rgt)||optical||no||3.0||1040||swivel||YES||4000||5.0||9.8||no|
|Canon M100 (⇒ lft | rgt)||no||no||3.0||1040||tilting||YES||4000||6.1||5||no|
|Canon M6 (⇒ lft | rgt)||no||no||3.0||1040||tilting||YES||4000||9.0||5||no|
|Canon M5 (⇒ lft | rgt)||2360||no||3.2||1620||tilting||YES||4000||9.0||5||no|
|Canon T6i (⇒ lft | rgt)||optical||no||3.0||1040||swivel||YES||4000||5.0||12||no|
|Canon 1200D (⇒ lft | rgt)||optical||no||3.0||460||fixed||no||4000||3.0||9.2||no|
|Canon 700D (⇒ lft | rgt)||optical||no||3.0||1040||swivel||YES||4000||5.0||13||no|
|Canon 70D (⇒ lft | rgt)||optical||YES||3.0||1040||swivel||YES||8000||7.0||12||no|
|Canon G16 (⇒ lft | rgt)||optical||no||3.0||922||fixed||no||4000||2.2||7||YES|
|Canon M (⇒ lft | rgt)||no||no||3.0||1040||fixed||YES||4000||4.3||no||no|
|Canon 650D (⇒ lft | rgt)||optical||no||3.0||1040||swivel||YES||4000||5.0||YES||no|
|Canon 600D (⇒ lft | rgt)||optical||no||3.0||1040||swivel||no||4000||3.7||YES||no|
|Canon 500D (⇒ lft | rgt)||optical||no||3.0||920||fixed||no||4000||3.4||YES||no|
|Panasonic G6 (⇒ lft | rgt)||1440||no||3.0||1036||swivel||YES||4000||7.0||10.5||no|
Both the 100D and the M3 have been discontinued, but can regularly be found used on eBay. The 100D was replaced by the Canon 200D, while the M3 was followed by the Canon M6.
Review summary: Canon 100D vs Canon M3
So how do things add up? Is the Canon 100D better than the Canon M3 or vice versa? The listing below highlights the relative strengths of the two models.
Advantages of the Canon EOS 100D:
- Easier framing: Has an optical viewfinder for image framing and settings control.
- Faster burst: Shoots at higher frequency (4.9 vs 4.2 flaps/sec) to capture the decisive moment.
- Longer lasting: Can take more shots (380 versus 250) on a single battery charge.
- More affordable: Was introduced into a lower priced segment (19 percent cheaper at launch).
- More heavily discounted: Has been on the market for longer (launched in March 2013).
Reasons to prefer the Canon EOS M3:
- More detail: Has more megapixels (24 vs 17.9MP), which boosts linear resolution by 16%.
- Better image quality: Scores markedly higher (9 points) in the DXO overall evaluation.
- Better low-light sensitivity: Can shoot in dim conditions (0.5 stops ISO advantage).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- More compact: Is smaller (111x68mm vs 117x91mm) and will fit more readily into a bag.
- More legacy lens friendly: Can use many non-native lenses via adapters.
- More modern: Was introduced somewhat (1 year and 10 months) more recently.
If the count of individual advantages (bullet points above) is taken as a guide, the M3 emerges as the winner of the match-up (7 : 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.
In any case, while the specs-based evaluation of cameras is instructive in revealing their potential as photographic tools, it says nothing about, for example, the handling, responsiveness, and overall imaging quality of the 100D and the M3 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.
|Canon 100D (⇒ rgt)||Rec||78/100 Gold||4/5||4/5||4/5||2013||549||discont.||check|
|Canon M3 (⇒ lft)||reviewed||75/100||4.5/5||4.5/5||4/5||2015||679||discont.||check|
|Canon 200D (⇒ lft | rgt)||HiRec||78/100 Silver||4.5/5||4.5/5||4.5/5||2017||549||latest||check|
|Canon M100 (⇒ lft | rgt)||Rec||..||4/5||..||3.5/5||2017||499||latest||check|
|Canon M6 (⇒ lft | rgt)||-||80/100 Silver||4/5||4.5/5||4/5||2017||779||latest||check|
|Canon M5 (⇒ lft | rgt)||Rec||82/100 Silver||4/5||4.5/5||4/5||2016||979||latest||check|
|Canon T6i (⇒ lft | rgt)||-||75/100||4.5/5||4.5/5||4.5/5||2015||749||discont.||check|
|Canon 1200D (⇒ lft | rgt)||4/5||-||4/5||4/5||4.5/5||2014||449||discont.||check|
|Canon 700D (⇒ lft | rgt)||-||76/100 Silver||4.5/5||4.5/5||4.5/5||2013||649||discont.||check|
|Canon 70D (⇒ lft | rgt)||HiRec||83/100 Gold||4.5/5||4.5/5||5/5||2013||1,199||discont.||check|
|Canon G16 (⇒ lft | rgt)||Rec||-||4.5/5||4.5/5||4.5/5||2013||549||latest||check|
|Canon M (⇒ lft | rgt)||Rec||-||4/5||3.5/5||4/5||2012||599||discont.||check|
|Canon 650D (⇒ lft | rgt)||HiRec||77/100 Silver||4.5/5||4.5/5||4.5/5||2012||849||discont.||check|
|Canon 600D (⇒ lft | rgt)||reviewed||77/100 Silver||4.5/5||5/5||4.5/5||2011||599||discont.||check|
|Canon 500D (⇒ lft | rgt)||88/100 HiRec||74/100 HiRec||4.5/5||5/5||4.5/5||2009||799||discont.||check|
|Panasonic G6 (⇒ lft | rgt)||HiRec||-||5/5||-||4.5/5||2013||599||discont.||check|
The review scores listed above should be treated with care, though. The ratings are only valid when refering to cameras in the same category and of the same age. 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.
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