Canon 850D vs R100

The Canon EOS 850D (called Canon T8i in some regions) and the Canon EOS R100 are two digital cameras that were officially introduced, respectively, in February 2020 and May 2023. The 850D is a DSLR, while the R100 is a mirrorless interchangeable lens camera. 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 850D		Canon R100
Digital single lens reflex		Mirrorless system camera
Canon EF mount lenses
24 MP – APS-C sensor		24 MP – APS-C sensor
4K/24p Video		4k/24p Video
ISO 100-25,600 (100 - 51,200)		ISO 100-25,600
Optical viewfinder		Electronic viewfinder (2360k dots)
3.0" LCD – 1040k dots		3.0" LCD – 1040k dots
Swivel touchscreen		Fixed screen (not touch-sensitive)
7.5 shutter flaps per second		6.5 shutter flaps per second
800 shots per battery charge		400 shots per battery charge
131 x 103 x 76 mm, 515 g		116 x 86 x 69 mm, 356 g

Check 850D offers at
ebay.com
Check R100 price at
amazon.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 850D and the Canon EOS R100? 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

The side-by-side display below illustrates the physical size and weight of the Canon 850D and the Canon R100. 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 dimensions are rounded to the nearest millimeter.

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon R100 is notably smaller (26 percent) than the Canon 850D. Moreover, the R100 is markedly lighter (31 percent) than the 850D. In this context, it is worth noting that neither the 850D nor the R100 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.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.

Body Specifications

		Camera Model	Camera Width	Camera Height	Camera Depth	Camera Weight	Battery Life	Weather Sealing	Camera Launch	Launch Price	Street Price
1.		Canon 850D	131 mm	103 mm	76 mm	515 g	800	n	Feb 2020	US$ 749	ebay.com
2.		Canon R100	116 mm	86 mm	69 mm	356 g	400	n	May 2023	US$ 479	amazon.com
3.		Canon 77D	131 mm	100 mm	76 mm	540 g	600	n	Feb 2017	US$ 899	ebay.com
4.		Canon 200D	122 mm	93 mm	70 mm	453 g	650	n	Jun 2017	US$ 549	ebay.com
5.		Canon 250D	122 mm	93 mm	70 mm	449 g	1070	n	Apr 2019	US$ 599	amazon.com
6.		Canon 750D	132 mm	101 mm	78 mm	555 g	440	n	Feb 2015	US$ 749	ebay.com
7.		Canon 760D	132 mm	101 mm	78 mm	565 g	440	n	Feb 2015	US$ 649	ebay.com
8.		Canon 800D	131 mm	100 mm	76 mm	532 g	600	n	Feb 2017	US$ 749	ebay.com
9.		Canon 2000D	129 mm	101 mm	78 mm	475 g	500	n	Feb 2018	US$ 449	amazon.com
10.		Canon G5 X Mark II	111 mm	61 mm	46 mm	340 g	230	n	Jul 2019	US$ 899	ebay.com
11.		Canon G7 X Mark III	105 mm	61 mm	41 mm	304 g	235	n	Jul 2019	US$ 749	amazon.com
12.		Canon M100	108 mm	67 mm	35 mm	302 g	295	n	Aug 2017	US$ 499	ebay.com
13.		Canon R10	123 mm	88 mm	83 mm	429 g	450	n	May 2022	US$ 979	amazon.com
14.		Canon R50	116 mm	86 mm	69 mm	375 g	230	n	Feb 2023	US$ 679	amazon.com
15.		Canon RP	133 mm	85 mm	70 mm	485 g	250	n	Feb 2019	US$ 1 299	amazon.com
16.		Canon SX730	110 mm	64 mm	40 mm	300 g	250	n	Apr 2017	US$ 399	ebay.com
17.		Canon SX740	110 mm	64 mm	40 mm	299 g	265	n	Jul 2018	US$ 399	amazon.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 naturally be influenced heavily by the price. 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 R100 was launched at a markedly lower price (by 36 percent) than the 850D, which puts it into a different market segment. 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

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. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better 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.

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.

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 850D and the R100 have the same pixel density, as well as the same pixel size. It should, however, be noted that the R100 is much more recent (by 3 years and 3 months) than the 850D, and its sensor will have benefitted from technological advances during this time. Coming back to sensor resolution, it should be mentioned that the R100 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The Canon EOS 850D has a native sensitivity range from ISO 100 to ISO 25600, which can be extended to ISO 100-51200. The corresponding ISO settings for the Canon EOS R100 are ISO 100 to ISO 25600 (no boost).

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 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 Model	Sensor Class	Resolution (MP)	Horiz. Pixels	Vert. Pixels	Video Format	DXO Portrait	DXO Landscape	DXO Sports	DXO Overall
1.		Canon 850D	APS-C	24.0	6000	4000	4K/24p	24.0	13.5	1873	83
2.		Canon R100	APS-C	24.0	6000	4000	4k/24p	24.1	13.9	2197	84
3.		Canon 77D	APS-C	24.0	6000	4000	1080/60p	23.6	13.3	971	78
4.		Canon 200D	APS-C	24.0	6000	4000	1080/60p	23.6	13.4	1041	79
5.		Canon 250D	APS-C	24.0	6000	4000	4K/25p	23.9	13.4	1791	82
6.		Canon 750D	APS-C	24.0	6000	4000	1080/30p	22.7	12.0	919	71
7.		Canon 760D	APS-C	24.0	6000	4000	1080/30p	22.6	12.0	915	70
8.		Canon 800D	APS-C	24.0	6000	4000	1080/60p	23.7	13.1	1586	80
9.		Canon 2000D	APS-C	24.0	6000	4000	1080/30p	22.6	11.9	1009	71
10.		Canon G5 X Mark II	1-inch	20.0	5472	3648	4K/30p	22.2	12.4	583	65
11.		Canon G7 X Mark III	1-inch	20.0	5472	3648	4K/30p	22.2	12.4	583	65
12.		Canon M100	APS-C	24.0	6000	4000	1080/60p	23.5	12.9	1272	78
13.		Canon R10	APS-C	24.0	6000	4000	4k/60p	24.1	13.8	2085	84
14.		Canon R50	APS-C	24.0	6000	4000	4K/30p	24.1	13.9	2168	84
15.		Canon RP	Full Frame	26.0	6240	4160	4K/30p	24.3	11.9	2977	85
16.		Canon SX730	1/2.3	20.2	5184	3888	1080/60p	20.5	11.9	924	50
17.		Canon SX740	1/2.3	20.2	5184	3888	4K/30p	20.6	12.1	1050	51
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 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 (4K/24p).

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. For example, the R100 has an electronic viewfinder (2360k dots), while the 850D 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 viewfinder in the R100 offers a wider field of view (100%) than the one in the 850D (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the R100 has a higher magnification (0.58x vs 0.51x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Canon 850D, the Canon R100, and comparable 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 850D	optical	n	3.0 / 1040	swivel	Y	1/4000s	7.5/s	Y	n
2.		Canon R100	2360	n	3.0 / 1040	fixed	n	1/4000s	6.5/s	Y	n
3.		Canon 77D	optical	Y	3.0 / 1040	swivel	Y	1/4000s	6.0/s	Y	n
4.		Canon 200D	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
5.		Canon 250D	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
6.		Canon 750D	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
7.		Canon 760D	optical	Y	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
8.		Canon 800D	optical	n	3.0 / 1040	swivel	Y	1/4000s	6.0/s	Y	n
9.		Canon 2000D	optical	n	3.0 / 920	fixed	n	1/4000s	3.0/s	Y	n
10.		Canon G5 X Mark II	2360	n	3.0 / 1040	tilting	Y	1/2000s	30/s	Y	Y
11.		Canon G7 X Mark III	none	n	3.0 / 1040	tilting	Y	1/2000s	30/s	Y	Y
12.		Canon M100	none	n	3.0 / 1040	tilting	Y	1/4000s	6.1/s	Y	n
13.		Canon R10	2360	n	3.0 / 1040	swivel	Y	1/8000s	15.0/s	Y	n
14.		Canon R50	2360	n	3.0 / 1620	swivel	Y	1/4000s	12.0/s	Y	n
15.		Canon RP	2360	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	n	n
16.		Canon SX730	none	n	3.0 / 922	tilting	n	1/3200s	5.9/s	Y	Y
17.		Canon SX740	none	n	3.0 / 922	tilting	n	1/3200s	10.0/s	Y	Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The 850D has a touchscreen, while the R100 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, the R100 is one of those camera that have an additional electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).

The Canon 850D and the Canon R100 both have 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 850D and the R100 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 850D and Canon EOS R100 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 850D	Y	stereo / mono	Y	-	mini	2.0	Y	-	Y
2.		Canon R100	Y	stereo / mono	Y	-	micro	2.0	Y	-	Y
3.		Canon 77D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
4.		Canon 200D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
5.		Canon 250D	Y	stereo / mono	Y	-	mini	2.0	Y	-	Y
6.		Canon 750D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
7.		Canon 760D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
8.		Canon 800D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
9.		Canon 2000D	Y	mono / mono	-	-	mini	2.0	Y	Y	-
10.		Canon G5 X Mark II	-	stereo / mono	-	-	micro	3.1	Y	-	Y
11.		Canon G7 X Mark III	-	stereo / mono	Y	-	micro	3.1	Y	-	Y
12.		Canon M100	-	stereo / mono	-	-	micro	2.0	Y	Y	Y
13.		Canon R10	Y	stereo / mono	Y	-	micro	2.0	Y	-	Y
14.		Canon R50	Y	stereo / mono	Y	-	micro	3.2	Y	-	Y
15.		Canon RP	Y	stereo / mono	Y	Y	micro	2.0	Y	-	Y
16.		Canon SX730	-	stereo / mono	-	-	micro	2.0	Y	Y	Y
17.		Canon SX740	-	stereo / mono	-	-	micro	2.0	Y	-	Y

The R100 is a recent model that features in the current product line-up of Canon. In contrast, the 850D has been discontinued (but can be found pre-owned on ebay). There has not been a direct replacement model for the 850D from Canon. Further information on the features and operation of the 850D and R100 can be found, respectively, in the Canon 850D Manual (free pdf) or the online Canon R100 Manual.

Review summary

So what conclusions can be drawn? Which of the two cameras – the Canon 850D or the Canon R100 – 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.

Reasons to prefer the Canon EOS 850D:

• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• Brighter framing: Features an optical viewfinder for clear, lag-free composition.
• More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
• Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
• More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
• Faster burst: Shoots at higher frequency (7.5 vs 6.5 flaps/sec) to capture the decisive moment.
• Longer lasting: Can take more shots (800 versus 400) on a single battery charge.
• More heavily discounted: Has been available for much longer (launched in February 2020).

Arguments in favor of the Canon EOS R100:

• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• More framing info: Has an electronic viewfinder that displays shooting data.
• More complete view: Has a viewfinder with a larger field of view (100% vs 95%).
• Larger viewfinder image: Features a viewfinder with a higher magnification (0.58x vs 0.51x).
• Less disturbing: Has an electronic shutter option for completely silent shooting.
• More compact: Is smaller (116x86mm vs 131x103mm) and will fit more readily into a bag.
• Less heavy: Has a lower weight (by 159g or 31 percent) and is thus easier to take along.
• More legacy lens friendly: Can use many non-native lenses via adapters.
• More affordable: Was introduced into a lower priced category (36 percent cheaper at launch).
• More modern: Reflects 3 years and 3 months of technical progress since the 850D launch.

If the number of relative strengths (bullet points above) is taken as a guide, the R100 emerges as the winner of the match-up (10 : 8 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision on a new camera. 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 850D and the Canon R100 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Mirrorless Interchangeable Lens 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 850D or the R100. 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.

Expert reviews

This is why expert reviews are important. 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.

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 850D	4/5	+	3/5	80/100	4/5	3.5/5	Feb 2020	US$ 749	ebay.com
2.		Canon R100	3/5	o	4.5/5	79/100	..	3.5/5	May 2023	US$ 479	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 200D	4/5	+ +	4/5	78/100	4.5/5	4.5/5	Jun 2017	US$ 549	ebay.com
5.		Canon 250D	4/5	o	4.5/5	79/100	4/5	4/5	Apr 2019	US$ 599	amazon.com
6.		Canon 750D	5/5	..	..	75/100	4.5/5	4.5/5	Feb 2015	US$ 749	ebay.com
7.		Canon 760D	5/5	+	..	77/100	4.5/5	4.5/5	Feb 2015	US$ 649	ebay.com
8.		Canon 800D	4.5/5	..	3.5/5	80/100	4.5/5	4/5	Feb 2017	US$ 749	ebay.com
9.		Canon 2000D	3/5	o	3.5/5	..	3.5/5	3.5/5	Feb 2018	US$ 449	amazon.com
10.		Canon G5 X Mark II	4/5	+	4/5	82/100	..	4/5	Jul 2019	US$ 899	ebay.com
11.		Canon G7 X Mark III	..	+ +	4/5	81/100	4/5	..	Jul 2019	US$ 749	amazon.com
12.		Canon M100	3/5	+	..	..	4/5	3.5/5	Aug 2017	US$ 499	ebay.com
13.		Canon R10	4/5	..	4.5/5	87/100	4/5	4.5/5	May 2022	US$ 979	amazon.com
14.		Canon R50	4/5	+ +	4.5/5	84/100	..	4.5/5	Feb 2023	US$ 679	amazon.com
15.		Canon RP	4/5	+	4/5	..	4.5/5	4/5	Feb 2019	US$ 1 299	amazon.com
16.		Canon SX730	..	+	..	..	4/5	4/5	Apr 2017	US$ 399	ebay.com
17.		Canon SX740	..	+	3.5/5	..	4/5	4/5	Jul 2018	US$ 399	amazon.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. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

Check 850D offers at
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Check R100 price at
amazon.com

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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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