Canon 450D vs 550D

The Canon EOS 450D (called Canon XSi in some regions) and the Canon EOS 550D (labelled Canon T2i in some countries) are two digital cameras that were officially introduced, respectively, in January 2008 and February 2010. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The 450D has a resolution of 12.2 megapixels, whereas the 550D 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 450D		Canon 550D
Digital single lens reflex		Digital single lens reflex
Canon EF mount lenses		Canon EF mount lenses
12.2 MP – APS-C sensor		17.9 MP – APS-C sensor
no Video		1080/30p Video
ISO 100-1,600		ISO 100-6,400 (100 - 12,800)
Optical viewfinder		Optical viewfinder
3.0" LCD – 230k dots		3.0" LCD – 1040k dots
Fixed screen (not touch-sensitive)		Fixed screen (not touch-sensitive)
3.5 shutter flaps per second		3.7 shutter flaps per second
500 shots per battery charge		440 shots per battery charge
129 x 98 x 62 mm, 524 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 EOS 450D and the Canon EOS 550D? 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 450D and the Canon 550D 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 width, height and depth measures are rounded to the nearest millimeter.

In this particular case, the Canon 450D and the Canon 550D have exactly the same width and height, and, thus, have identically-sized bodies. However, the 550D is slightly heavier (1 percent) than the 450D. In this context, it is worth noting that neither the 450D nor the 550D 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. In this particular case, both cameras feature the same lens mount, so that they can use the same lenses. You can compare the optics available in the Canon EF Lens Catalog.

Concerning battery life, the 450D gets 500 shots out of its Canon LP-E5 battery, while the 550D can take 440 images on a single charge of its Canon LP-E8 power pack.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons 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 450D	129 mm	98 mm	62 mm	524 g	500	n	Jan 2008	US$ 799	ebay.com
2.		Canon 550D	129 mm	98 mm	62 mm	530 g	440	n	Feb 2010	US$ 699	ebay.com
3.		Canon 400D	127 mm	84 mm	65 mm	556 g	370	n	Aug 2006	US$ 799	ebay.com
4.		Canon 500D	129 mm	98 mm	62 mm	520 g	400	n	Mar 2009	US$ 799	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 1100D	130 mm	100 mm	78 mm	495 g	700	n	Feb 2011	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.		Nikon D5000	127 mm	104 mm	80 mm	590 g	510	n	Apr 2009	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

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 550D was launched at a somewhat lower price (by 13 percent) than the 450D, which makes it more attractive for photographers on a tight budget. 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. 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 sensor inside a digital camera is one of the key determinants 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, but their sensors differ slightly in size. The sensor area in the 550D is 1 percent bigger. They nevertheless have the same format factor of 1.6. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Technology-wise, the 550D uses a more advanced image processing engine (DIGIC 4) than the 450D (DIGIC 3), with benefits for noise reduction, color accuracy, and processing speed.

With 17.9MP, the 550D offers a higher resolution than the 450D (12.2MP), but the 550D has smaller individual pixels (pixel pitch of 4.31μm versus 5.19μm for the 450D). Yet, the 550D is a much more recent model (by 2 years) than the 450D, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units.

The resolution advantage of the Canon 550D implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 550D for good quality output (200 dots per inch) amounts to 25.9 x 17.3 inches or 65.8 x 43.9 cm, for very good quality (250 dpi) 20.7 x 13.8 inches or 52.7 x 35.1 cm, and for excellent quality (300 dpi) 17.3 x 11.5 inches or 43.9 x 29.3 cm. The corresponding values for the Canon 450D are 21.4 x 14.2 inches or 54.3 x 36.2 cm for good quality, 17.1 x 11.4 inches or 43.4 x 28.9 cm for very good quality, and 14.2 x 9.5 inches or 36.2 x 24.1 cm for excellent quality prints.

The Canon EOS 450D has a native sensitivity range from ISO 100 to ISO 1600. The corresponding ISO settings for the Canon EOS 550D are ISO 100 to ISO 6400, with the possibility to increase the ISO range to 100-12800.

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 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. Of the two cameras under consideration, the 550D has a markedly higher DXO score than the 450D (overall score 5 points higher), which will translate into better image quality. The advantage is based on 0.2 bits higher color depth, 0.7 EV in additional dynamic range, and 0.2 stops in additional low light sensitivity. 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 450D	APS-C	12.2	4272	2848	none	21.9	10.8	692	61
2.		Canon 550D	APS-C	17.9	5184	3456	1080/30p	22.1	11.5	784	66
3.		Canon 400D	APS-C	10.1	3888	2592	none	22.1	11.0	664	62
4.		Canon 500D	APS-C	15.1	4752	3168	1080/20p	21.7	11.5	663	63
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 1100D	APS-C	12.2	4272	2848	720/30p	21.9	11.0	755	62
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.		Nikon D5000	APS-C	12.2	4288	2848	720/24p	22.7	12.5	868	72

Many modern cameras cannot only take still pictures, but also record videos. The 550D indeed provides for movie recording, while the 450D does not. The highest resolution format that the 550D can use is 1080/30p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. The 450D and the 550D are similar in the sense that both have an optical viewfinder. The latter is useful for getting a clear image for framing even in brightly lit environments. The viewfinders of both cameras offer the same field of view (95%), as well as the same magnification (0.54x). The following table reports on some other key feature differences and similarities of the Canon 450D, the Canon 550D, 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 450D	optical	n	3.0 / 230	fixed	n	1/4000s	3.5/s	Y	n
2.		Canon 550D	optical	n	3.0 / 1040	fixed	n	1/4000s	3.7/s	Y	n
3.		Canon 400D	optical	n	2.5 / 230	fixed	n	1/4000s	3.0/s	Y	n
4.		Canon 500D	optical	n	3.0 / 920	fixed	n	1/4000s	3.4/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 1100D	optical	n	2.7 / 230	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.		Nikon D5000	optical	n	2.7 / 230	full-flex	n	1/4000s	4.0/s	Y	n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

The 450D writes its imaging data to SDHC cards, while the 550D uses 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 EOS 450D and Canon EOS 550D 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 450D	Y	- / -	-	-	mini	2.0	-	-	-
2.		Canon 550D	Y	stereo / -	Y	-	mini	2.0	-	-	-
3.		Canon 400D	Y	- / -	-	-	-	2.0	-	-	-
4.		Canon 500D	Y	mono / mono	-	-	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 1100D	Y	stereo / 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.		Nikon D5000	Y	mono / mono	-	-	mini	2.0	-	-	-

Both the 450D and the 550D have been discontinued, but can regularly be found used on ebay. The 450D was replaced by the Canon 500D, while the 550D was followed by the Canon 600D. Further information on the features and operation of the 450D and 550D can be found, respectively, in the Canon 450D Manual (free pdf) or the online Canon 550D Manual.

Review summary

So what is the bottom line? Is the Canon 450D better than the Canon 550D or vice versa? A synthesis of the relative strong points of each of the models is listed below.

Arguments in favor of the Canon EOS 450D:

• Longer lasting: Can take more shots (500 versus 440) on a single battery charge.
• More heavily discounted: Has been available for much longer (launched in January 2008).

Reasons to prefer the Canon EOS 550D:

• More detail: Has more megapixels (17.9 vs 12.2MP), which boosts linear resolution by 21%.
• Better image quality: Scores markedly higher (5 points) in the DXO overall evaluation.
• More dynamic range: Captures a broader range of light and dark details (0.7 EV of extra DR).
• Better jpgs: Has a more modern image processing engine (DIGIC 4 vs DIGIC 3).
• Broader imaging potential: Can capture not only stills but also 1080/30p video.
• More detailed LCD: Has a higher resolution rear screen (1040k vs 230k dots).
• More affordable: Was released into a lower priced segment (13 percent cheaper at launch).
• More modern: Reflects 2 years of technical progress since the 450D launch.

If the count of individual advantages (bullet points above) is taken as a guide, the 550D is the clear winner of the contest (8 : 2 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 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 450D and the Canon 550D place the cameras among the top in their class? Find out in the latest Best DSLR Camera listing 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 450D and the 550D in practical situations. 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 450D	..	+ +	..	+ +	4/5	4.5/5	Jan 2008	US$ 799	ebay.com
2.		Canon 550D	..	+ +	..	77/100	4/5	4.5/5	Feb 2010	US$ 699	ebay.com
3.		Canon 400D	..	+ +	..	+ +	o	4/5	Aug 2006	US$ 799	ebay.com
4.		Canon 500D	..	+ +	..	74/100	4.5/5	4.5/5	Mar 2009	US$ 799	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 1100D	..	80/100	..	69/100	4/5	4.5/5	Feb 2011	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.		Nikon D5000	..	+ +	..	75/100	4/5	4.5/5	Apr 2009	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 comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

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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 your choice using the following search menu. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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