Canon M100 vs SL3

The Canon EOS M100 and the Canon EOS Rebel SL3 (labelled Canon 250D in some countries) are two digital cameras that were announced, respectively, in August 2017 and April 2019. The M100 is a mirrorless interchangeable lens camera, while the SL3 is a DSLR. Both cameras are equipped with an APS-C sensor. Both cameras offer a resolution of 24 megapixels.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications

Canon M100		Canon SL3
Mirrorless system camera		Digital single lens reflex
Canon EF-M mount lenses		Canon EF mount lenses
24 MP – APS-C sensor		24 MP – APS-C sensor
1080/60p Video		4K/25p Video
ISO 100-25,600		ISO 100-25,600 (100 - 51,200)
No viewfinder, LCD framing		Optical viewfinder
3.0" LCD – 1040k dots		3.0" LCD – 1040k dots
Tilting touchscreen		Swivel touchscreen
6.1 shutter flaps per second		5 shutter flaps per second
295 shots per battery charge		1070 shots per battery charge
108 x 67 x 35 mm, 302 g		122 x 93 x 70 mm, 449 g

Check M100 offers at
ebay.com
Check SL3 price at
amazon.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS M100 and the Canon EOS Rebel SL3? 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.

Body comparison

An illustration of the physical size and weight of the Canon M100 and the Canon SL3 is provided in the side-by-side display below. The two cameras are presented according to their relative size. 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.

Both cameras are available in two different colors (black, white).

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon SL3 is considerably larger (57 percent) than the Canon M100. Moreover, the SL3 is substantially heavier (49 percent) than the M100. In this context, it is worth noting that neither the M100 nor the SL3 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 and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.

Concerning battery life, the M100 gets 295 shots out of its Canon LP-E12 battery, while the SL3 can take 1070 images on a single charge of its Canon LP-E17 power pack.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.

Body Specifications

		Camera Model	Camera Width	Camera Height	Camera Depth	Camera Weight	Battery Life	Weather Sealing	Camera Launch	Launch Price	Street Price
1.		Canon M100	108 mm	67 mm	35 mm	302 g	295	n	Aug 2017	US$ 499	ebay.com
2.		Canon SL3	122 mm	93 mm	70 mm	449 g	1070	n	Apr 2019	US$ 599	amazon.com
3.		Canon 77D	131 mm	100 mm	76 mm	540 g	600	n	Feb 2017	US$ 899	ebay.com
4.		Canon G9 X Mark II	98 mm	58 mm	31 mm	206 g	235	n	Jan 2017	US$ 529	ebay.com
5.		Canon M	109 mm	66 mm	32 mm	298 g	230	n	Jul 2012	US$ 599	ebay.com
6.		Canon M3	111 mm	68 mm	44 mm	366 g	250	n	Feb 2015	US$ 679	ebay.com
7.		Canon M5	116 mm	89 mm	61 mm	427 g	295	n	Sep 2016	US$ 979	ebay.com
8.		Canon M6	112 mm	68 mm	45 mm	390 g	295	n	Feb 2017	US$ 779	ebay.com
9.		Canon M10	108 mm	67 mm	35 mm	301 g	255	n	Oct 2015	US$ 499	ebay.com
10.		Canon M50	116 mm	88 mm	59 mm	390 g	235	n	Feb 2018	US$ 779	ebay.com
11.		Canon M50 Mark II	116 mm	88 mm	59 mm	387 g	305	n	Oct 2020	US$ 599	ebay.com
12.		Canon M200	108 mm	67 mm	35 mm	299 g	315	n	Sep 2019	US$ 549	ebay.com
13.		Canon SL2	122 mm	93 mm	70 mm	453 g	650	n	Jun 2017	US$ 549	ebay.com
14.		Canon T7	129 mm	101 mm	78 mm	475 g	500	n	Feb 2018	US$ 449	amazon.com
15.		Canon T8i	131 mm	103 mm	76 mm	515 g	800	n	Feb 2020	US$ 749	ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
Convert to Imperial

Any camera decision will obviously take relative prices into account. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The M100 was launched at a somewhat lower price (by 17 percent) than the SL3, 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.

Sensor comparison

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. 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.

Technology-wise, the SL3 uses a more advanced image processing engine (DIGIC 8) than the M100 (DIGIC 7), with benefits for noise reduction, color accuracy, and processing speed.

The two cameras under review do not only share the same sensor size, but also offer an identical resolution of 24 megapixels. This similarity in sensor specs implies that both the M100 and the SL3 have the same pixel density, as well as the same pixel size. It should, however, be noted that the SL3 is a somewhat more recent model (by 1 year and 7 months) than the M100, and its sensor might have benefitted from technological advances during this time.

The Canon EOS M100 has a native sensitivity range from ISO 100 to ISO 25600. The corresponding ISO settings for the Canon EOS Rebel SL3 are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 100-51200.

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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"). The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

Sensor Characteristics

		Camera Model	Sensor Class	Resolution (MP)	Horiz. Pixels	Vert. Pixels	Video Format	DXO Portrait	DXO Landscape	DXO Sports	DXO Overall
1.		Canon M100	APS-C	24.0	6000	4000	1080/60p	23.5	12.9	1272	78
2.		Canon SL3	APS-C	24.0	6000	4000	4K/25p	23.9	13.4	1791	82
3.		Canon 77D	APS-C	24.0	6000	4000	1080/60p	23.6	13.3	971	78
4.		Canon G9 X Mark II	1-inch	20.0	5472	3648	1080/60p	21.9	12.5	522	65
5.		Canon M	APS-C	17.9	5184	3456	1080/30p	22.1	11.2	827	65
6.		Canon M3	APS-C	24.0	6000	4000	1080/30p	22.8	11.8	1169	72
7.		Canon M5	APS-C	24.0	6000	4000	1080/60p	23.4	12.4	1262	77
8.		Canon M6	APS-C	24.0	6000	4000	1080/60p	23.4	12.6	1317	78
9.		Canon M10	APS-C	17.9	5184	3456	1080/30p	22.2	11.4	753	65
10.		Canon M50	APS-C	24.0	6000	4000	4K/24p	23.8	13.3	1684	81
11.		Canon M50 Mark II	APS-C	24.0	6000	4000	4K/24p	24.0	13.6	1939	83
12.		Canon M200	APS-C	24.0	6000	4000	4k/25p	24.0	13.5	1836	82
13.		Canon SL2	APS-C	24.0	6000	4000	1080/60p	23.6	13.4	1041	79
14.		Canon T7	APS-C	24.0	6000	4000	1080/30p	23.8	13.3	1684	81
15.		Canon T8i	APS-C	24.0	6000	4000	4K/24p	24.0	13.5	1873	83
Note: DXO values in italics represent estimates based on sensor size and age.

Many modern cameras cannot only take still pictures, but also record videos. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the SL3 provides a better video resolution than the M100. It can shoot movie footage at 4K/25p, while the M100 is limited to 1080/60p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. For example, the SL3 has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the M100 relies on live view and the rear LCD for framing. The table below summarizes some of the other core capabilities of the Canon M100 and Canon SL3 in connection with corresponding information for a sample of similar cameras.

Core Features

		Camera Model	Viewfinder (Type or 000 dots)	Control Panel (yes/no)	LCD Specifications (inch/000 dots)	LCD Attach- ment	Touch Screen (yes/no)	Max Shutter Speed *	Max Shutter Flaps *	Built-in Flash (yes/no)	Built-in Image Stab
1.		Canon M100	none	n	3.0 / 1040	tilting	Y	1/4000s	6.1/s	Y	n
2.		Canon SL3	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
3.		Canon 77D	optical	Y	3.0 / 1040	swivel	Y	1/4000s	6.0/s	Y	n
4.		Canon G9 X Mark II	none	n	3.0 / 1040	fixed	Y	1/2000s	8.2/s	Y	Y
5.		Canon M	none	n	3.0 / 1040	fixed	Y	1/4000s	4.3/s	n	n
6.		Canon M3	optional	n	3.0 / 1040	tilting	Y	1/4000s	4.2/s	Y	n
7.		Canon M5	2360	n	3.2 / 1620	tilting	Y	1/4000s	9.0/s	Y	n
8.		Canon M6	optional	n	3.0 / 1040	tilting	Y	1/4000s	9.0/s	Y	n
9.		Canon M10	none	n	3.0 / 1040	tilting	Y	1/4000s	4.6/s	Y	n
10.		Canon M50	2360	n	3.0 / 1040	swivel	Y	1/4000s	10.0/s	Y	n
11.		Canon M50 Mark II	2360	n	3.0 / 1040	swivel	Y	1/4000s	10.0/s	Y	n
12.		Canon M200	none	n	3.0 / 1040	tilting	Y	1/4000s	6.1/s	Y	n
13.		Canon SL2	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
14.		Canon T7	optical	n	3.0 / 920	fixed	n	1/4000s	3.0/s	Y	n
15.		Canon T8i	optical	n	3.0 / 1040	swivel	Y	1/4000s	7.5/s	Y	n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

The Canon SL3 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 M100 and the SL3 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.

Connectivity comparison

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 M100 and Canon EOS Rebel SL3 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

Input-Output Connections

		Camera Model	Hotshoe Port	Internal Mic / Speaker	Microphone Port	Headphone Port	HDMI Port	USB Port	WiFi Support	NFC Support	Bluetooth Support
1.		Canon M100	-	stereo / mono	-	-	micro	2.0	Y	Y	Y
2.		Canon SL3	Y	stereo / mono	Y	-	mini	2.0	Y	-	Y
3.		Canon 77D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
4.		Canon G9 X Mark II	-	stereo / mono	-	-	micro	2.0	Y	Y	Y
5.		Canon M	Y	stereo / mono	Y	-	mini	2.0	-	-	-
6.		Canon M3	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
7.		Canon M5	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
8.		Canon M6	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
9.		Canon M10	-	stereo / mono	-	-	mini	2.0	Y	Y	-
10.		Canon M50	Y	stereo / mono	Y	-	micro	2.0	Y	-	Y
11.		Canon M50 Mark II	Y	stereo / mono	Y	-	micro	2.0	Y	-	Y
12.		Canon M200	-	stereo / mono	-	-	micro	2.0	Y	-	Y
13.		Canon SL2	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
14.		Canon T7	Y	mono / mono	-	-	mini	2.0	Y	Y	-
15.		Canon T8i	Y	stereo / mono	Y	-	mini	2.0	Y	-	Y

It is notable that the SL3 has a microphone port, which can help to improve the quality of audio recordings by attaching an external microphone. The M100 does not feature such a mic input.

The SL3 is a recent model that features in the current product line-up of Canon. In contrast, the M100 has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the M100 was succeeded by the Canon M200. Further information on the features and operation of the M100 and SL3 can be found, respectively, in the Canon M100 Manual (free pdf) or the online Canon SL3 Manual.

Review summary

So how do things add up? Is there a clear favorite between the Canon M100 and the Canon SL3? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.

Reasons to prefer the Canon EOS M100:

• Faster burst: Shoots at higher frequency (6.1 vs 5 flaps/sec) to capture the decisive moment.
• More compact: Is smaller (108x67mm vs 122x93mm) and thus needs less room in the bag.
• Less heavy: Is lighter (by 147g or 33 percent) and hence easier to carry around.
• More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
• Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
• More affordable: Was introduced into a lower priced segment (17 percent cheaper at launch).
• More heavily discounted: Has been on the market for longer (launched in August 2017).

Advantages of the Canon EOS Rebel SL3:

• Better jpgs: Has a more modern image processing engine (DIGIC 8 vs DIGIC 7).
• Better video: Provides higher definition movie capture (4K/25p vs 1080/60p).
• 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.
• More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
• Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
• Longer lasting: Gets more shots (1070 versus 295) out of a single battery charge.
• Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
• More modern: Was introduced somewhat (1 year and 7 months) more recently.

If the count of individual advantages (bullet points above) is taken as a guide, the SL3 emerges as the winner of the match-up (9 : 7 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 wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro 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 M100 and the Canon SL3 place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best DSLR 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 remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the M100 or the SL3. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.

Expert reviews

This is why hands-on reviews by experts 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.

Expert Camera Reviews

		Camera   Model	AP   score	CL   score	DCW   score	DPR   score	EPZ   score	PB   score	Camera Launch	Launch Price	Street Price
1.		Canon M100	3/5	+	..	..	4/5	3.5/5	Aug 2017	US$ 499	ebay.com
2.		Canon SL3	4/5	o	4.5/5	79/100	4/5	4/5	Apr 2019	US$ 599	amazon.com
3.		Canon 77D	4.5/5	..	4/5	82/100	4.5/5	4/5	Feb 2017	US$ 899	ebay.com
4.		Canon G9 X Mark II	4/5	..	4/5	75/100	4.5/5	4.5/5	Jan 2017	US$ 529	ebay.com
5.		Canon M	3/5	+	..	..	4/5	4/5	Jul 2012	US$ 599	ebay.com
6.		Canon M3	4/5	o	..	75/100	4.5/5	4/5	Feb 2015	US$ 679	ebay.com
7.		Canon M5	4/5	+	4/5	82/100	4/5	4/5	Sep 2016	US$ 979	ebay.com
8.		Canon M6	..	..	..	80/100	4/5	4/5	Feb 2017	US$ 779	ebay.com
9.		Canon M10	..	..	..	..	..	4/5	Oct 2015	US$ 499	ebay.com
10.		Canon M50	..	+	4/5	79/100	..	3.5/5	Feb 2018	US$ 779	ebay.com
11.		Canon M50 Mark II	4/5	..	4/5	..	4.5/5	3.5/5	Oct 2020	US$ 599	ebay.com
12.		Canon M200	..	+	3/5	79/100	4/5	4/5	Sep 2019	US$ 549	ebay.com
13.		Canon SL2	4/5	+ +	4/5	78/100	4.5/5	4.5/5	Jun 2017	US$ 549	ebay.com
14.		Canon T7	..	o	3.5/5	..	3.5/5	3.5/5	Feb 2018	US$ 449	amazon.com
15.		Canon T8i	4.5/5	+	3/5	80/100	4/5	3.5/5	Feb 2020	US$ 749	ebay.com
Note: (+ +) 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. 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.

Check M100 offers at
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Check SL3 price at
amazon.com

Other camera comparisons

Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just use the search menu below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

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