Canon 500D vs SX20

The Canon EOS 500D (called Canon T1i in some regions) and the Canon PowerShot SX20 IS are two digital cameras that were officially introduced, respectively, in March 2009 and August 2009. The 500D is a DSLR, while the SX20 is a fixed lens compact. The cameras are based on an APS-C (500D) and a 1/2.3-inch (SX20) sensor. The 500D has a resolution of 15.1 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 500D		Canon SX20
Digital single lens reflex		Fixed lens compact camera
Canon EF mount lenses		28-560mm f/2.8-5.7
15.1 MP – APS-C sensor		12 MP – 1/2.3" sensor
1080/20p Video		720/30p Video
ISO 100-6,400 (100 - 12,800)		ISO 100-3,200
Optical viewfinder		Electronic viewfinder (202k dots)
3.0" LCD – 920k dots		2.5" LCD – 230k dots
Fixed screen (not touch-sensitive)		Swivel screen (not touch-sensitive)
3.4 shutter flaps per second		0.7 shutter flaps per second
129 x 98 x 62 mm, 520 g		123 x 88 x 87 mm, 600 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 500D 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

An illustration of the physical size and weight of the Canon 500D and the Canon SX20 is provided in the side-by-side display below. 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 SX20 is notably smaller (14 percent) than the Canon 500D. In this context, it is worth noting that neither the 500D 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 500D 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 500D and their specifications in the Canon EF Lens Catalog.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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 500D	129 mm	98 mm	62 mm	520 g	400	n	Mar 2009	US$ 799	ebay.com
2.		Canon SX20	123 mm	88 mm	87 mm	600 g	..	n	Aug 2009	US$ 399	ebay.com
3.		Canon 450D	129 mm	98 mm	62 mm	524 g	500	n	Jan 2008	US$ 799	ebay.com
4.		Canon 550D	129 mm	98 mm	62 mm	530 g	440	n	Feb 2010	US$ 699	ebay.com
5.		Canon 600D	133 mm	100 mm	80 mm	570 g	440	n	Feb 2011	US$ 599	ebay.com
6.		Canon 650D	133 mm	100 mm	79 mm	575 g	440	n	Jun 2012	US$ 849	ebay.com
7.		Canon 700D	133 mm	100 mm	79 mm	580 g	440	n	Mar 2013	US$ 649	ebay.com
8.		Canon 750D	132 mm	101 mm	78 mm	555 g	440	n	Feb 2015	US$ 749	ebay.com
9.		Canon 760D	132 mm	101 mm	78 mm	565 g	440	n	Feb 2015	US$ 649	ebay.com
10.		Canon 1000D	126 mm	98 mm	65 mm	502 g	500	n	Jun 2008	US$ 449	ebay.com
11.		Canon 1200D	130 mm	100 mm	78 mm	480 g	500	n	Feb 2014	US$ 449	ebay.com
12.		Canon G1 X	117 mm	81 mm	65 mm	534 g	250	n	Jan 2012	US$ 799	ebay.com
13.		Canon G1 X Mark II	116 mm	74 mm	66 mm	553 g	240	n	Feb 2014	US$ 799	ebay.com
14.		Canon SX10	123 mm	88 mm	87 mm	600 g	..	n	Sep 2008	US$ 399	ebay.com
15.		Canon SX30	123 mm	92 mm	108 mm	601 g	370	n	Sep 2010	US$ 429	ebay.com
16.		Canon SX40	123 mm	92 mm	108 mm	600 g	380	n	Sep 2011	US$ 429	ebay.com
17.		Canon SX50	123 mm	87 mm	106 mm	595 g	315	n	Sep 2012	US$ 429	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

The price is, of course, an important factor in any camera decision. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The SX20 was launched at a lower price than the 500D, 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 imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the background. On the downside, larger sensors tend to be associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Canon 500D 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 500D has a native 3:2 aspect ratio, while the one in the SX20 offers a 4:3 aspect.

With 15.1MP, the 500D offers a higher resolution than the SX20 (12MP), but the 500D nevertheless has larger individual pixels (pixel pitch of 4.69μm versus 1.53μm for the SX20) due to its larger sensor. However, the SX20 is a somewhat more recent model (by 4 months) than the 500D, and its sensor might have benefitted from technological advances during this time that 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 500D implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 500D for good quality output (200 dots per inch) amounts to 23.8 x 15.8 inches or 60.4 x 40.2 cm, for very good quality (250 dpi) 19 x 12.7 inches or 48.3 x 32.2 cm, and for excellent quality (300 dpi) 15.8 x 10.6 inches or 40.2 x 26.8 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 Canon EOS 500D has a native sensitivity range from ISO 100 to ISO 6400, which can be extended to ISO 100-12800. The corresponding ISO settings for the Canon PowerShot SX20 IS are ISO 100 to ISO 3200 (no boost).

In terms of underlying technology, the 500D 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.

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 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 500D	APS-C	15.1	4752	3168	1080/20p	21.7	11.5	663	63
2.		Canon SX20	1/2.3	12.0	4000	3000	720/30p	19.2	10.5	225	37
3.		Canon 450D	APS-C	12.2	4272	2848	none	21.9	10.8	692	61
4.		Canon 550D	APS-C	17.9	5184	3456	1080/30p	22.1	11.5	784	66
5.		Canon 600D	APS-C	17.9	5184	3456	1080/30p	22.1	11.5	793	65
6.		Canon 650D	APS-C	17.9	5184	3456	1080/30p	21.7	11.2	722	62
7.		Canon 700D	APS-C	17.9	5184	3456	1080/30p	21.7	11.2	681	61
8.		Canon 750D	APS-C	24.0	6000	4000	1080/30p	22.7	12.0	919	71
9.		Canon 760D	APS-C	24.0	6000	4000	1080/30p	22.6	12.0	915	70
10.		Canon 1000D	APS-C	10.1	3888	2592	none	22.0	10.9	719	62
11.		Canon 1200D	APS-C	17.9	5184	3456	1080/30p	21.9	11.3	724	63
12.		Canon G1 X	1.5-inch	14.2	4352	3264	1080/24p	21.7	10.8	644	60
13.		Canon G1 X Mark II	1.5-inch	13.0	4160	3120	1080/30p	21.5	10.8	581	58
14.		Canon SX10	1/2.3	10.0	3648	2736	480/30p	19.0	10.3	144	35
15.		Canon SX30	1/2.3	14.0	4320	3240	720/30p	19.4	10.7	320	39
16.		Canon SX40	1/2.3	12.0	4000	3000	1080/24p	19.6	10.9	409	41
17.		Canon SX50	1/2.3	12.0	4000	3000	1080/24p	20.3	11.2	179	47
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 also of capturing video footage. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the 500D provides a higher video resolution than the SX20. It can shoot video footage at 1080/20p, 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 500D 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 following table reports on some other key feature differences and similarities of the Canon 500D, the Canon SX20, 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 500D	optical	n	3.0 / 920	fixed	n	1/4000s	3.4/s	Y	n
2.		Canon SX20	202	n	2.5 / 230	swivel	n	1/3200s	0.7/s	Y	Y
3.		Canon 450D	optical	n	3.0 / 230	fixed	n	1/4000s	3.5/s	Y	n
4.		Canon 550D	optical	n	3.0 / 1040	fixed	n	1/4000s	3.7/s	Y	n
5.		Canon 600D	optical	n	3.0 / 1040	swivel	n	1/4000s	3.7/s	Y	n
6.		Canon 650D	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
7.		Canon 700D	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
8.		Canon 750D	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
9.		Canon 760D	optical	Y	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
10.		Canon 1000D	optical	n	2.5 / 230	fixed	n	1/4000s	3.0/s	Y	n
11.		Canon 1200D	optical	n	3.0 / 460	fixed	n	1/4000s	3.0/s	Y	n
12.		Canon G1 X	optical	n	3.0 / 922	swivel	n	1/4000s	1.9/s	Y	Y
13.		Canon G1 X Mark II	optional	n	3.0 / 1040	tilting	Y	1/4000s	5.2/s	Y	Y
14.		Canon SX10	202	n	2.5 / 230	swivel	n	1/3200s	0.7/s	Y	Y
15.		Canon SX30	202	n	2.7 / 230	swivel	n	1/3200s	0.6/s	Y	Y
16.		Canon SX40	202	n	2.7 / 230	swivel	n	1/3200s	10.3/s	Y	Y
17.		Canon SX50	202	n	3.0 / 461	swivel	n	1/2000s	2.2/s	Y	Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

Concerning the storage of imaging data, both the 500D and the SX20 write their files to SDHC 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 500D 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 500D	Y	mono / mono	-	-	mini	2.0	-	-	-
2.		Canon SX20	Y	stereo / mono	-	-	YES	2.0	-	-	-
3.		Canon 450D	Y	- / -	-	-	mini	2.0	-	-	-
4.		Canon 550D	Y	stereo / -	Y	-	mini	2.0	-	-	-
5.		Canon 600D	Y	mono / mono	Y	-	mini	2.0	-	-	-
6.		Canon 650D	Y	stereo / mono	Y	-	mini	2.0	-	-	-
7.		Canon 700D	Y	stereo / mono	Y	-	mini	2.0	-	-	-
8.		Canon 750D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
9.		Canon 760D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
10.		Canon 1000D	Y	- / -	-	-	-	2.0	-	-	-
11.		Canon 1200D	Y	mono / mono	-	-	mini	2.0	-	-	-
12.		Canon G1 X	Y	stereo / mono	-	-	mini	2.0	-	-	-
13.		Canon G1 X Mark II	Y	stereo / mono	-	-	mini	2.0	Y	Y	-
14.		Canon SX10	Y	stereo / mono	-	-	-	2.0	-	-	-
15.		Canon SX30	Y	stereo / mono	-	-	YES	2.0	-	-	-
16.		Canon SX40	Y	stereo / mono	-	-	YES	2.0	-	-	-
17.		Canon SX50	Y	stereo / mono	-	-	mini	2.0	-	-	-

Both the 500D and the SX20 have been discontinued, but can regularly be found used on ebay. The 500D was replaced by the Canon 550D, while the SX20 was followed by the Canon SX30. Further information on the features and operation of the 500D and SX20 can be found, respectively, in the Canon 500D Manual (free pdf) or the online Canon SX20 Manual.

Review summary

So what is the bottom line? Is there a clear favorite between the Canon 500D and the Canon SX20? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.

Arguments in favor of the Canon EOS 500D:

• More detail: Offers more megapixels (15.1 vs 12MP) with a 14% higher linear resolution.
• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• Better image quality: Features bigger pixels on a larger sensor for higher quality imaging.
• Richer colors: The pixel size advantage translates into images with better, more accurate colors.
• More dynamic range: Larger pixels capture a wider spectrum of light and dark details.
• Better low-light sensitivity: Larger pixels means good image quality even under poor lighting.
• Better video: Provides higher definition movie capture (1080/20p vs 720/30p).
• 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 (920k vs 230k dots).
• Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/3200s) to freeze action.
• Faster burst: Shoots at higher frequency (3.4 vs 0.7 flaps/sec) to capture the decisive moment.
• More flexible: Can take a variety of interchangeable lenses, including specialty optics.
• More heavily discounted: Has been on the market for longer (launched in March 2009).

Reasons to prefer 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.
• More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
• Ready to shoot: Comes with an integrated lens, while the 500D requires a separate lens.
• More compact: Is smaller (123x88mm vs 129x98mm) 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 modern: Was introduced somewhat (4 months) more recently.

If the number of relative strengths (bullet points above) is taken as a guide, the 500D is the clear winner of the match-up (14 : 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 sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape 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 500D 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 the spec-sheets of cameras can offer a general idea of their imaging potential, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the 500D or the SX20. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.

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 500D	..	+ +	..	74/100	4.5/5	4.5/5	Mar 2009	US$ 799	ebay.com
2.		Canon SX20	..	+ +	..	73/100	..	4/5	Aug 2009	US$ 399	ebay.com
3.		Canon 450D	..	+ +	..	+ +	4/5	4.5/5	Jan 2008	US$ 799	ebay.com
4.		Canon 550D	..	+ +	..	77/100	4/5	4.5/5	Feb 2010	US$ 699	ebay.com
5.		Canon 600D	3/5	o	..	77/100	4.5/5	4.5/5	Feb 2011	US$ 599	ebay.com
6.		Canon 650D	4/5	+ +	..	77/100	4.5/5	4.5/5	Jun 2012	US$ 849	ebay.com
7.		Canon 700D	..	..	..	76/100	4.5/5	4.5/5	Mar 2013	US$ 649	ebay.com
8.		Canon 750D	5/5	..	..	75/100	4.5/5	4.5/5	Feb 2015	US$ 749	ebay.com
9.		Canon 760D	5/5	+	..	77/100	4.5/5	4.5/5	Feb 2015	US$ 649	ebay.com
10.		Canon 1000D	..	82/100	..	+ +	3.5/5	4.5/5	Jun 2008	US$ 449	ebay.com
11.		Canon 1200D	3/5	+	..	..	4/5	4.5/5	Feb 2014	US$ 449	ebay.com
12.		Canon G1 X	5/5	+	..	76/100	4/5	4.5/5	Jan 2012	US$ 799	ebay.com
13.		Canon G1 X Mark II	3/5	+	..	77/100	4/5	4.5/5	Feb 2014	US$ 799	ebay.com
14.		Canon SX10	..	+ +	..	..	..	4/5	Sep 2008	US$ 399	ebay.com
15.		Canon SX30	3/5	+ +	..	..	3.5/5	4/5	Sep 2010	US$ 429	ebay.com
16.		Canon SX40	..	+	..	..	4.5/5	4/5	Sep 2011	US$ 429	ebay.com
17.		Canon SX50	3/5	+ +	..	72/100	4.5/5	4.5/5	Sep 2012	US$ 429	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. 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. 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? If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes below. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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