Canon SX420 vs T2i

The Canon PowerShot SX420 IS and the Canon EOS Rebel T2i (labelled Canon 550D in some countries) are two digital cameras that were announced, respectively, in January 2016 and February 2010. The SX420 is a fixed lens compact, while the T2i is a DSLR. The cameras are based on a 1/2.3-inch (SX420) and an APS-C (T2i) sensor. The SX420 has a resolution of 19.9 megapixels, whereas the T2i provides 17.9 MP.

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

Headline Specifications

Canon SX420		Canon T2i
Fixed lens compact camera		Digital single lens reflex
24-1008mm f/3.5-6.6		Canon EF mount lenses
19.9 MP – 1/2.3" sensor		17.9 MP – APS-C sensor
720/25p Video		1080/30p Video
ISO 100-1,600		ISO 100-6,400 (100 - 12,800)
No viewfinder, LCD framing		Optical viewfinder
3.0" LCD – 230k dots		3.0" LCD – 1040k dots
Fixed screen (not touch-sensitive)		Fixed screen (not touch-sensitive)
0.5 shutter flaps per second		3.7 shutter flaps per second
195 shots per battery charge		440 shots per battery charge
104 x 69 x 85 mm, 325 g		129 x 98 x 62 mm, 530 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon PowerShot SX420 IS and the Canon EOS Rebel T2i? 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 SX420 and the Canon T2i is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth dimensions are rounded to the nearest millimeter.

The SX420 can be obtained in two different colors (black, red), while the T2i is only available in black.

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon T2i is considerably larger (76 percent) than the Canon SX420. In this context, it is worth noting that neither the SX420 nor the T2i are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the SX420 has a lens built in, whereas the T2i 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 T2i and their specifications in the Canon EF Lens Catalog.

Concerning battery life, the SX420 gets 195 shots out of its Canon NB-11LH battery, while the T2i can take 440 images on a single charge of its Canon LP-E8 power pack.

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 SX420	104 mm	69 mm	85 mm	325 g	195	n	Jan 2016	US$ 299	ebay.com
2.		Canon T2i	129 mm	98 mm	62 mm	530 g	440	n	Feb 2010	US$ 699	ebay.com
3.		Canon G5 X	112 mm	76 mm	44 mm	353 g	210	n	Oct 2015	US$ 799	ebay.com
4.		Canon G7 X Mark II	106 mm	61 mm	42 mm	319 g	265	n	Feb 2016	US$ 699	ebay.com
5.		Canon SX410	104 mm	69 mm	85 mm	325 g	185	n	Feb 2015	US$ 279	ebay.com
6.		Canon SX430	104 mm	69 mm	85 mm	323 g	195	n	Jan 2017	US$ 299	ebay.com
7.		Canon SX610	105 mm	61 mm	27 mm	191 g	270	n	Jan 2015	US$ 249	ebay.com
8.		Canon SX620	97 mm	57 mm	28 mm	182 g	295	n	May 2016	US$ 279	ebay.com
9.		Canon SX710	113 mm	66 mm	35 mm	269 g	230	n	Jan 2015	US$ 349	ebay.com
10.		Canon SX720	110 mm	64 mm	36 mm	270 g	250	n	Feb 2016	US$ 379	ebay.com
11.		Canon SX730	110 mm	64 mm	40 mm	300 g	250	n	Apr 2017	US$ 399	ebay.com
12.		Canon T1i	129 mm	98 mm	62 mm	520 g	400	n	Mar 2009	US$ 799	ebay.com
13.		Canon T3i	133 mm	100 mm	80 mm	570 g	440	n	Feb 2011	US$ 599	ebay.com
14.		Canon T4i	133 mm	100 mm	79 mm	575 g	440	n	Jun 2012	US$ 849	ebay.com
15.		Canon T5i	133 mm	100 mm	79 mm	580 g	440	n	Mar 2013	US$ 649	ebay.com
16.		Canon T6s	132 mm	101 mm	78 mm	565 g	440	n	Feb 2015	US$ 649	ebay.com
17.		Panasonic ZS70	112 mm	67 mm	41 mm	322 g	380	n	Apr 2017	US$ 449	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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The SX420 was launched at a lower price than the T2i, despite having a lens built in. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. 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 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 generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have richer color-depth than smaller pixels 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Canon SX420 features a 1/2.3-inch sensor and the Canon T2i an APS-C sensor. The sensor area in the T2i is 1086 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 5.6 and 1.6. The sensor in the SX420 has a native 4:3 aspect ratio, while the one in the T2i offers a 3:2 aspect.

In terms of chip-set technology, the SX420 uses a more advanced image processing engine (DIGIC 4+) than the T2i (DIGIC 4), with benefits for noise reduction, color accuracy, and processing speed.

Despite having a smaller sensor, the Canon SX420 offers a higher resolution of 19.9 megapixels, compared with 17.9 MP of the Canon T2i. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 1.19μm versus 4.31μm for the T2i). However, it should be noted that the SX420 is much more recent (by 5 years and 10 months) than the T2i, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently. Coming back to sensor resolution, it should be mentioned that the SX420 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The Canon PowerShot SX420 IS has a native sensitivity range from ISO 100 to ISO 1600. The corresponding ISO settings for the Canon EOS Rebel T2i are ISO 100 to ISO 6400, with the possibility to increase the ISO range to 100-12800.

In terms of underlying technology, the SX420 is build around a CCD sensor, while the T2i uses a CMOS 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 assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. 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 SX420	1/2.3	19.9	5152	3864	720/25p	20.3	11.7	806	48
2.		Canon T2i	APS-C	17.9	5184	3456	1080/30p	22.1	11.5	784	66
3.		Canon G5 X	1-inch	20.0	5472	3648	1080/60p	21.4	12.3	471	62
4.		Canon G7 X Mark II	1-inch	20.0	5472	3648	1080/60p	21.8	11.9	260	62
5.		Canon SX410	1/2.3	19.9	5152	3864	720/30p	20.2	11.6	720	47
6.		Canon SX430	1/2.3	19.9	5152	3864	720/25p	20.5	11.9	900	49
7.		Canon SX610	1/2.3	20.2	5184	3888	1080/30p	20.2	11.6	712	47
8.		Canon SX620	1/2.3	20.2	5184	3888	1080/30p	20.4	11.8	838	49
9.		Canon SX710	1/2.3	20.2	5184	3888	1080/60p	20.2	11.6	712	47
10.		Canon SX720	1/2.3	20.2	5184	3888	1080/60p	20.3	11.8	817	48
11.		Canon SX730	1/2.3	20.2	5184	3888	1080/60p	20.5	11.9	924	50
12.		Canon T1i	APS-C	15.1	4752	3168	1080/20p	21.7	11.5	663	63
13.		Canon T3i	APS-C	17.9	5184	3456	1080/30p	22.1	11.5	793	65
14.		Canon T4i	APS-C	17.9	5184	3456	1080/30p	21.7	11.2	722	62
15.		Canon T5i	APS-C	17.9	5184	3456	1080/30p	21.7	11.2	681	61
16.		Canon T6s	APS-C	24.0	6000	4000	1080/30p	22.6	12.0	915	70
17.		Panasonic ZS70	1/2.3	20.2	5184	3888	4K/30p	19.1	10.6	106	36
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 T2i provides a better video resolution than the SX420. It can shoot movie footage at 1080/30p, while the SX420 is limited to 720/25p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. For example, the T2i has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the SX420 relies on live view and the rear LCD for framing. The following table reports on some other key feature differences and similarities of the Canon SX420, the Canon T2i, 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 SX420	none	n	3.0 / 230	fixed	n	1/4000s	0.5/s	Y	Y
2.		Canon T2i	optical	n	3.0 / 1040	fixed	n	1/4000s	3.7/s	Y	n
3.		Canon G5 X	2360	n	3.0 / 1040	swivel	Y	1/2000s	5.9/s	Y	Y
4.		Canon G7 X Mark II	none	n	3.0 / 1040	tilting	Y	1/2000s	8.0/s	Y	Y
5.		Canon SX410	none	n	3.0 / 230	fixed	n	1/4000s	0.5/s	Y	Y
6.		Canon SX430	none	n	3.0 / 230	fixed	n	1/4000s	0.5/s	Y	Y
7.		Canon SX610	none	n	3.0 / 922	fixed	n	1/2000s	2.5/s	Y	Y
8.		Canon SX620	none	n	3.0 / 922	fixed	n	1/2000s	2.5/s	Y	Y
9.		Canon SX710	none	n	3.0 / 922	fixed	n	1/3200s	6.0/s	Y	Y
10.		Canon SX720	none	n	3.0 / 922	fixed	n	1/3200s	5.9/s	Y	Y
11.		Canon SX730	none	n	3.0 / 922	tilting	n	1/3200s	5.9/s	Y	Y
12.		Canon T1i	optical	n	3.0 / 920	fixed	n	1/4000s	3.4/s	Y	n
13.		Canon T3i	optical	n	3.0 / 1040	swivel	n	1/4000s	3.7/s	Y	n
14.		Canon T4i	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
15.		Canon T5i	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
16.		Canon T6s	optical	Y	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
17.		Panasonic ZS70	1166	n	3.0 / 1040	tilting	Y	1/2000s	10.0/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 SX420 and the T2i write their files to SDXC 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 PowerShot SX420 IS and Canon EOS Rebel T2i 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 SX420	-	mono / mono	-	-	-	2.0	Y	Y	-
2.		Canon T2i	Y	stereo / -	Y	-	mini	2.0	-	-	-
3.		Canon G5 X	Y	stereo / mono	-	-	mini	2.0	Y	Y	-
4.		Canon G7 X Mark II	-	stereo / mono	-	-	micro	2.0	Y	Y	-
5.		Canon SX410	-	stereo / mono	-	-	-	2.0	-	-	-
6.		Canon SX430	-	mono / mono	-	-	-	2.0	Y	Y	-
7.		Canon SX610	-	- / -	-	-	micro	2.0	Y	Y	-
8.		Canon SX620	-	mono / mono	-	-	micro	2.0	Y	Y	-
9.		Canon SX710	-	stereo / mono	-	-	micro	2.0	Y	Y	-
10.		Canon SX720	-	stereo / mono	-	-	micro	2.0	Y	Y	-
11.		Canon SX730	-	stereo / mono	-	-	micro	2.0	Y	Y	Y
12.		Canon T1i	Y	mono / mono	-	-	mini	2.0	-	-	-
13.		Canon T3i	Y	mono / mono	Y	-	mini	2.0	-	-	-
14.		Canon T4i	Y	stereo / mono	Y	-	mini	2.0	-	-	-
15.		Canon T5i	Y	stereo / mono	Y	-	mini	2.0	-	-	-
16.		Canon T6s	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
17.		Panasonic ZS70	-	stereo / mono	-	-	micro	2.0	Y	-	-

It is notable that the SX420 offers wifi support, while the T2i does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

Both the SX420 and the T2i have been discontinued, but can regularly be found used on ebay. The T2i was replaced by the Canon T3i, while the SX420 was followed by the Canon SX430. Further information on the features and operation of the SX420 and T2i can be found, respectively, in the Canon SX420 Manual (free pdf) or the online Canon T2i Manual.

Review summary

So how do things add up? Is the Canon SX420 better than the Canon T2i or vice versa? A synthesis of the relative strong points of each of the models is listed below.

Reasons to prefer the Canon PowerShot SX420 IS:

• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• Better jpgs: Has a more modern image processing engine (DIGIC 4+ vs DIGIC 4).
• Ready to shoot: Comes with a built-in lens, while the T2i requires a separate lens.
• More compact: Is smaller (104x69mm vs 129x98mm) and thus needs less room in the bag.
• Less heavy: Is lighter even though it comes with a built-in lens (unlike the T2i).
• Sharper images: Has hand-shake reducing image stabilization built-in.
• 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.
• More affordable: Was introduced at a lower price, despite coming with a built-in lens.
• More modern: Reflects 5 years and 10 months of technical progress since the T2i launch.

Arguments in favor of the Canon EOS Rebel T2i:

• 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 (1080/30p vs 720/25p).
• 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 detailed LCD: Has a higher resolution rear screen (1040k vs 230k dots).
• Faster burst: Shoots at higher frequency (3.7 vs 0.5 flaps/sec) to capture the decisive moment.
• More flexible: Makes it possible to change lenses and thus to use specialty optics.
• Longer lasting: Gets more shots (440 versus 195) out of a single battery charge.
• Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
• More heavily discounted: Has been around for much longer (launched in February 2010).

If the number of relative strengths (bullet points above) is taken as a guide, the T2i is the clear winner of the contest (14 : 10 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. 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 SX420 and the Canon T2i place the cameras among the top in their class? Find out in the latest Best Superzoom Camera and Best DSLR 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 says little about, for example, the shooting experience and imaging performance of the SX420 and the T2i in practical situations. 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 adjacent summary-table relays the overall verdicts of several of the most popular 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 SX420	..	..	..	..	..	3/5	Jan 2016	US$ 299	ebay.com
2.		Canon T2i	..	+ +	..	77/100	4/5	4.5/5	Feb 2010	US$ 699	ebay.com
3.		Canon G5 X	5/5	+ +	..	78/100	4.5/5	4.5/5	Oct 2015	US$ 799	ebay.com
4.		Canon G7 X Mark II	4.5/5	+ +	..	81/100	4.5/5	4.5/5	Feb 2016	US$ 699	ebay.com
5.		Canon SX410	..	o	..	..	..	..	Feb 2015	US$ 279	ebay.com
6.		Canon SX430	..	..	..	..	3.5/5	3.5/5	Jan 2017	US$ 299	ebay.com
7.		Canon SX610	..	..	..	..	4/5	4/5	Jan 2015	US$ 249	ebay.com
8.		Canon SX620	..	..	..	..	..	4/5	May 2016	US$ 279	ebay.com
9.		Canon SX710	..	+	..	..	4/5	3.5/5	Jan 2015	US$ 349	ebay.com
10.		Canon SX720	..	+	..	..	4/5	4.5/5	Feb 2016	US$ 379	ebay.com
11.		Canon SX730	..	+	..	..	4/5	4/5	Apr 2017	US$ 399	ebay.com
12.		Canon T1i	..	+ +	..	74/100	4.5/5	4.5/5	Mar 2009	US$ 799	ebay.com
13.		Canon T3i	3/5	o	..	77/100	4.5/5	4.5/5	Feb 2011	US$ 599	ebay.com
14.		Canon T4i	4/5	+ +	..	77/100	4.5/5	4.5/5	Jun 2012	US$ 849	ebay.com
15.		Canon T5i	..	..	..	76/100	4.5/5	4.5/5	Mar 2013	US$ 649	ebay.com
16.		Canon T6s	5/5	+	..	77/100	4.5/5	4.5/5	Feb 2015	US$ 649	ebay.com
17.		Panasonic ZS70	..	+ +	..	..	4/5	4/5	Apr 2017	US$ 449	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. 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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