Canon 800D vs SX20

The Canon EOS 800D (called Canon T7i in some regions) and the Canon PowerShot SX20 IS are two digital cameras that were announced, respectively, in February 2017 and August 2009. The 800D is a DSLR, while the SX20 is a fixed lens compact. The cameras are based on an APS-C (800D) and a 1/2.3-inch (SX20) sensor. The 800D has a resolution of 24 megapixels, whereas the SX20 provides 12 MP.

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

Headline Specifications

Canon 800D		Canon SX20
Digital single lens reflex		Fixed lens compact camera
Canon EF mount lenses		28-560mm f/2.8-5.7
24 MP – APS-C sensor		12 MP – 1/2.3" sensor
1080/60p Video		720/30p Video
ISO 100-25,600 (100 - 51,200)		ISO 100-3,200
Optical viewfinder		Electronic viewfinder (202k dots)
3.0" LCD – 1040k dots		2.5" LCD – 230k dots
Swivel touchscreen		Swivel screen (not touch-sensitive)
6 shutter flaps per second		0.7 shutter flaps per second
131 x 100 x 76 mm, 532 g		123 x 88 x 87 mm, 600 g

Check 800D offers at
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Check SX20 offers at
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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 800D and the Canon PowerShot SX20 IS? 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 physical size and weight of the Canon 800D and the Canon SX20 are illustrated 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 size 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 SX20 is notably smaller (17 percent) than the Canon 800D. In this context, it is worth noting that neither the 800D nor the SX20 are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the SX20 has a lens built in, whereas the 800D 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 800D and their specifications in the Canon EF Lens Catalog.

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 800D	131 mm	100 mm	76 mm	532 g	600	n	Feb 2017	US$ 749	ebay.com
2.		Canon SX20	123 mm	88 mm	87 mm	600 g	..	n	Aug 2009	US$ 399	ebay.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 750D	132 mm	101 mm	78 mm	555 g	440	n	Feb 2015	US$ 749	ebay.com
6.		Canon 760D	132 mm	101 mm	78 mm	565 g	440	n	Feb 2015	US$ 649	ebay.com
7.		Canon 850D	131 mm	103 mm	76 mm	515 g	800	n	Feb 2020	US$ 749	ebay.com
8.		Canon 1000D	126 mm	98 mm	65 mm	502 g	500	n	Jun 2008	US$ 449	ebay.com
9.		Canon 1300D	129 mm	101 mm	78 mm	485 g	500	n	Mar 2016	US$ 449	ebay.com
10.		Canon 2000D	129 mm	101 mm	78 mm	475 g	500	n	Feb 2018	US$ 449	amazon.com
11.		Canon G7 X Mark II	106 mm	61 mm	42 mm	319 g	265	n	Feb 2016	US$ 699	ebay.com
12.		Canon M6	112 mm	68 mm	45 mm	390 g	295	n	Feb 2017	US$ 779	ebay.com
13.		Canon SX10	123 mm	88 mm	87 mm	600 g	..	n	Sep 2008	US$ 399	ebay.com
14.		Canon SX30	123 mm	92 mm	108 mm	601 g	370	n	Sep 2010	US$ 429	ebay.com
15.		Canon SX40	123 mm	92 mm	108 mm	600 g	380	n	Sep 2011	US$ 429	ebay.com
16.		Canon SX50	123 mm	87 mm	106 mm	595 g	315	n	Sep 2012	US$ 429	ebay.com
17.		Nikon D5600	124 mm	97 mm	70 mm	465 g	970	n	Nov 2016	US$ 699	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 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 SX20 was launched at a lower price than the 800D, despite having a lens built in. 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.

Of the two cameras under consideration, the Canon 800D features an APS-C sensor and the Canon SX20 a 1/2.3-inch sensor. The sensor area in the SX20 is 92 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 5.6. The sensor in the 800D has a native 3:2 aspect ratio, while the one in the SX20 offers a 4:3 aspect.

In terms of chip-set technology, the 800D uses a more advanced image processing engine (DIGIC 7) than the SX20 (DIGIC 4), with benefits for noise reduction, color accuracy, and processing speed.

With 24MP, the 800D offers a higher resolution than the SX20 (12MP), but the 800D nevertheless has larger individual pixels (pixel pitch of 3.72μm versus 1.53μm for the SX20) due to its larger sensor. Moreover, the 800D is a much more recent model (by 7 years and 5 months) than the SX20, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels. Coming back to sensor resolution, it should be mentioned that the SX20 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Canon 800D implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 800D for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 cm. The corresponding values for the Canon SX20 are 20 x 15 inches or 50.8 x 38.1 cm for good quality, 16 x 12 inches or 40.6 x 30.5 cm for very good quality, and 13.3 x 10 inches or 33.9 x 25.4 cm for excellent quality prints.

The 800D has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Canon EOS 800D 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 PowerShot SX20 IS are ISO 100 to ISO 3200 (no boost).

In terms of underlying technology, the 800D is build around a CMOS sensor, while the SX20 uses a CCD 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"). The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar 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 800D	APS-C	24.0	6000	4000	1080/60p	23.7	13.1	1586	80
2.		Canon SX20	1/2.3	12.0	4000	3000	720/30p	19.2	10.5	225	37
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 750D	APS-C	24.0	6000	4000	1080/30p	22.7	12.0	919	71
6.		Canon 760D	APS-C	24.0	6000	4000	1080/30p	22.6	12.0	915	70
7.		Canon 850D	APS-C	24.0	6000	4000	4K/24p	24.0	13.5	1873	83
8.		Canon 1000D	APS-C	10.1	3888	2592	none	22.0	10.9	719	62
9.		Canon 1300D	APS-C	17.9	5184	3456	1080/30p	22.0	11.7	781	66
10.		Canon 2000D	APS-C	24.0	6000	4000	1080/30p	22.6	11.9	1009	71
11.		Canon G7 X Mark II	1-inch	20.0	5472	3648	1080/60p	21.8	11.9	260	62
12.		Canon M6	APS-C	24.0	6000	4000	1080/60p	23.4	12.6	1317	78
13.		Canon SX10	1/2.3	10.0	3648	2736	480/30p	19.0	10.3	144	35
14.		Canon SX30	1/2.3	14.0	4320	3240	720/30p	19.4	10.7	320	39
15.		Canon SX40	1/2.3	12.0	4000	3000	1080/24p	19.6	10.9	409	41
16.		Canon SX50	1/2.3	12.0	4000	3000	1080/24p	20.3	11.2	179	47
17.		Nikon D5600	APS-C	24.0	6000	4000	1080/60p	24.1	14.0	1306	84
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. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the 800D provides a higher video resolution than the SX20. It can shoot video footage at 1080/60p, while the SX20 is limited to 720/30p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the SX20 has an electronic viewfinder (202k dots), while the 800D 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 adjacent table lists some of the other core features of the Canon 800D and Canon SX20 along with similar information for a selection of comparators.

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 800D	optical	n	3.0 / 1040	swivel	Y	1/4000s	6.0/s	Y	n
2.		Canon SX20	202	n	2.5 / 230	swivel	n	1/3200s	0.7/s	Y	Y
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 750D	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
6.		Canon 760D	optical	Y	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
7.		Canon 850D	optical	n	3.0 / 1040	swivel	Y	1/4000s	7.5/s	Y	n
8.		Canon 1000D	optical	n	2.5 / 230	fixed	n	1/4000s	3.0/s	Y	n
9.		Canon 1300D	optical	n	3.0 / 920	fixed	n	1/4000s	3.0/s	Y	n
10.		Canon 2000D	optical	n	3.0 / 920	fixed	n	1/4000s	3.0/s	Y	n
11.		Canon G7 X Mark II	none	n	3.0 / 1040	tilting	Y	1/2000s	8.0/s	Y	Y
12.		Canon M6	optional	n	3.0 / 1040	tilting	Y	1/4000s	9.0/s	Y	n
13.		Canon SX10	202	n	2.5 / 230	swivel	n	1/3200s	0.7/s	Y	Y
14.		Canon SX30	202	n	2.7 / 230	swivel	n	1/3200s	0.6/s	Y	Y
15.		Canon SX40	202	n	2.7 / 230	swivel	n	1/3200s	10.3/s	Y	Y
16.		Canon SX50	202	n	3.0 / 461	swivel	n	1/2000s	2.2/s	Y	Y
17.		Nikon D5600	optical	n	3.2 / 1037	swivel	Y	1/4000s	5.0/s	Y	n
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 800D has a touchscreen, while the SX20 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

The 800D writes its imaging data to SDXC cards, while the SX20 uses SDHC cards. The 800D supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the SX20 cannot take advantage of Ultra High Speed SD cards.

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 800D and Canon PowerShot SX20 IS 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 800D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
2.		Canon SX20	Y	stereo / mono	-	-	YES	2.0	-	-	-
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 750D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
6.		Canon 760D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
7.		Canon 850D	Y	stereo / mono	Y	-	mini	2.0	Y	-	Y
8.		Canon 1000D	Y	- / -	-	-	-	2.0	-	-	-
9.		Canon 1300D	Y	mono / mono	-	-	mini	2.0	Y	Y	-
10.		Canon 2000D	Y	mono / mono	-	-	mini	2.0	Y	Y	-
11.		Canon G7 X Mark II	-	stereo / mono	-	-	micro	2.0	Y	Y	-
12.		Canon M6	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
13.		Canon SX10	Y	stereo / mono	-	-	-	2.0	-	-	-
14.		Canon SX30	Y	stereo / mono	-	-	YES	2.0	-	-	-
15.		Canon SX40	Y	stereo / mono	-	-	YES	2.0	-	-	-
16.		Canon SX50	Y	stereo / mono	-	-	mini	2.0	-	-	-
17.		Nikon D5600	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y

It is notable that the 800D has a microphone port, which is missing on the SX20. Such an external microphone input can help to substantially improve the quality of audio recordings when a good external microphone is used.

Both the 800D and the SX20 have been discontinued, but can regularly be found used on ebay. The SX20 was replaced by the Canon SX30, while the 800D was followed by the Canon 850D. Further information on the features and operation of the 800D and SX20 can be found, respectively, in the Canon 800D Manual (free pdf) or the online Canon SX20 Manual.

Review summary

So what is the bottom line? Is the Canon 800D better than the Canon SX20 or vice versa? The listing below highlights the relative strengths of the two models.

Arguments in favor of the Canon EOS 800D:

• More detail: Offers more megapixels (24 vs 12MP) with a 44% higher linear resolution.
• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• Better image quality: Features a larger and more technologically advanced imaging sensor.
• Richer colors: The sensor size advantage translates into images with better, more accurate colors.
• More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
• Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
• Better jpgs: Has a more modern image processing engine (DIGIC 7 vs DIGIC 4).
• Better video: Provides higher definition movie capture (1080/60p vs 720/30p).
• 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.
• Brighter framing: Features an optical viewfinder for clear, lag-free composition.
• Larger screen: Has a bigger rear LCD (3.0" vs 2.5") for image review and settings control.
• More detailed LCD: Has a higher resolution rear screen (1040k vs 230k dots).
• 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 shutter: Has higher mechanical shutter speed (1/4000s vs 1/3200s) to freeze action.
• Faster burst: Shoots at higher frequency (6 vs 0.7 flaps/sec) to capture the decisive moment.
• More flexible: Can take a variety of interchangeable lenses, including specialty optics.
• 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.
• Easier wireless transfer: Supports Bluetooth for image sharing without cables.
• Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
• More modern: Reflects 7 years and 5 months of technical progress since the SX20 launch.

Advantages of the Canon PowerShot SX20 IS:

• 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.
• Ready to shoot: Comes with an integrated lens, while the 800D requires a separate lens.
• More compact: Is smaller (123x88mm vs 131x100mm) and will fit more readily into a bag.
• Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
• More affordable: Was introduced at a lower price, despite coming with a built-in lens.
• More heavily discounted: Has been around for much longer (launched in August 2009).

If the count of relative strengths (bullet points above) is taken as a measure, the 800D is the clear winner of the match-up (23 : 7 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 800D and the Canon SX20 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Superzoom Camera listings whether the two cameras rank among the cream of the crop.

In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the 800D or the SX20. 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 800D	4.5/5	..	3.5/5	80/100	4.5/5	4/5	Feb 2017	US$ 749	ebay.com
2.		Canon SX20	..	+ +	..	73/100	..	4/5	Aug 2009	US$ 399	ebay.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 750D	5/5	..	..	75/100	4.5/5	4.5/5	Feb 2015	US$ 749	ebay.com
6.		Canon 760D	5/5	+	..	77/100	4.5/5	4.5/5	Feb 2015	US$ 649	ebay.com
7.		Canon 850D	4/5	+	3/5	80/100	4/5	3.5/5	Feb 2020	US$ 749	ebay.com
8.		Canon 1000D	..	82/100	..	+ +	3.5/5	4.5/5	Jun 2008	US$ 449	ebay.com
9.		Canon 1300D	4/5	o	4/5	73/100	4/5	4/5	Mar 2016	US$ 449	ebay.com
10.		Canon 2000D	3/5	o	3.5/5	..	3.5/5	3.5/5	Feb 2018	US$ 449	amazon.com
11.		Canon G7 X Mark II	4.5/5	+ +	..	81/100	4.5/5	4.5/5	Feb 2016	US$ 699	ebay.com
12.		Canon M6	..	..	..	80/100	4/5	4/5	Feb 2017	US$ 779	ebay.com
13.		Canon SX10	..	+ +	..	..	..	4/5	Sep 2008	US$ 399	ebay.com
14.		Canon SX30	3/5	+ +	..	..	3.5/5	4/5	Sep 2010	US$ 429	ebay.com
15.		Canon SX40	..	+	..	..	4.5/5	4/5	Sep 2011	US$ 429	ebay.com
16.		Canon SX50	3/5	+ +	..	72/100	4.5/5	4.5/5	Sep 2012	US$ 429	ebay.com
17.		Nikon D5600	4/5	..	4/5	79/100	4.5/5	4/5	Nov 2016	US$ 699	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted with care, 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 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.

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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.

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