Canon 400D vs XTi

The Canon 400D and the Canon XTi are identical cameras that only differ by name. Canon sells the camera in different regions of the world using an alternative designation because of marketing and warranty considerations. Hence, there is not much to differentiate the two. You might want to move across to the CAM-parator app in order to select two other camera models for a more meaningful comparison, or just scroll down to the tables on this page to see how the Canon 400D (aka Canon XTi) relates to a set of comparators.

The Canon EOS 400D (called Canon XTi in some regions) and the Canon EOS Rebel XTi (labelled Canon 400D in some countries) are two digital cameras that were officially introduced in August 2006. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. Both cameras offer a resolution of 10.1 megapixels.

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

Headline Specifications

Canon 400D		Canon XTi
Digital single lens reflex		Digital single lens reflex
Canon EF mount lenses		Canon EF mount lenses
10.1 MP – APS-C sensor		10.1 MP – APS-C sensor
no Video		no Video
ISO 100-1,600		ISO 100-1,600
Optical viewfinder		Optical viewfinder
2.5" LCD – 230k dots		2.5" LCD – 230k dots
Fixed screen (not touch-sensitive)		Fixed screen (not touch-sensitive)
3 shutter flaps per second		3 shutter flaps per second
370 shots per battery charge		370 shots per battery charge
127 x 84 x 65 mm, 556 g		127 x 84 x 65 mm, 556 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 400D and the Canon EOS Rebel XTi? 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 400D and the Canon XTi. 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 measures are rounded to the nearest millimeter.

In this particular case, the Canon 400D and the Canon XTi have exactly the same width and height, and, thus, have identically-sized bodies. Moreover, the two cameras also share the same weight. In this context, it is worth noting that neither the 400D nor the XTi 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.

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 (USD)	Street Price
1.		Canon 400D	127 mm	84 mm	65 mm	556 g	370	n	Aug 2006	799	ebay.com
2.		Canon XTi	127 mm	84 mm	65 mm	556 g	370	n	Aug 2006	799	ebay.com
3.		Canon 750D	132 mm	101 mm	78 mm	555 g	440	n	Feb 2015	749	ebay.com
4.		Canon 760D	132 mm	101 mm	78 mm	565 g	440	n	Feb 2015	649	ebay.com
5.		Canon 650D	133 mm	100 mm	79 mm	575 g	440	n	Jun 2012	849	ebay.com
6.		Canon T4i	133 mm	100 mm	79 mm	575 g	440	n	Jun 2012	849	ebay.com
7.		Canon 1100D	130 mm	100 mm	78 mm	495 g	700	n	Feb 2011	449	ebay.com
8.		Canon T3	130 mm	100 mm	78 mm	495 g	700	n	Feb 2011	449	ebay.com
9.		Canon 550D	129 mm	98 mm	62 mm	530 g	440	n	Feb 2010	699	ebay.com
10.		Canon 500D	129 mm	98 mm	62 mm	520 g	400	n	Mar 2009	799	ebay.com
11.		Canon 450D	129 mm	98 mm	62 mm	524 g	500	n	Jan 2008	799	ebay.com
12.		Canon XS	126 mm	98 mm	65 mm	502 g	500	n	Jun 2008	449	ebay.com
13.		Canon 40D	146 mm	108 mm	74 mm	822 g	750	n	Aug 2007	1,299	ebay.com
14.		Canon 350D	127 mm	94 mm	64 mm	540 g	400	n	Feb 2005	899	ebay.com
15.		Canon XT	127 mm	94 mm	64 mm	540 g	400	n	Feb 2005	899	ebay.com
16.		Nikon D40X	124 mm	94 mm	64 mm	522 g	520	n	Mar 2007	729	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 two cameras under review were launched at the same price and fall into the same market segment. 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. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and 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.

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 10.1 megapixels. This similarity in sensor specs implies that both the 400D and the XTi have the same pixel density, as well as the same pixel size. Moreover, the two cameras were released in close succession, so that their sensors are from the same technological generation.

The Canon EOS 400D has a native sensitivity range from ISO 100 to ISO 1600. The Canon EOS Rebel XTi offers exactly the same ISO settings.

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.

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 Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar imaging performance. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-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 400D	APS-C	10.1	3888	2592	none	22.1	11.0	664	62
2.		Canon XTi	APS-C	10.1	3888	2592	none	22.1	11.0	664	62
3.		Canon 750D	APS-C	24.0	6000	4000	1080/30p	22.7	12.0	919	71
4.		Canon 760D	APS-C	24.0	6000	4000	1080/30p	22.6	12.0	915	70
5.		Canon 650D	APS-C	17.9	5184	3456	1080/30p	21.7	11.2	722	62
6.		Canon T4i	APS-C	17.9	5184	3456	1080/30p	21.7	11.2	722	62
7.		Canon 1100D	APS-C	12.2	4272	2848	720/30p	21.9	11.0	755	62
8.		Canon T3	APS-C	12.2	4272	2848	720/30p	21.9	11.0	755	62
9.		Canon 550D	APS-C	17.9	5184	3456	1080/30p	22.1	11.5	784	66
10.		Canon 500D	APS-C	15.1	4752	3168	1080/20p	21.7	11.5	663	63
11.		Canon 450D	APS-C	12.2	4272	2848	none	21.9	10.8	692	61
12.		Canon XS	APS-C	10.1	3888	2592	none	22.0	10.9	719	62
13.		Canon 40D	APS-C	10.1	3888	2592	none	22.1	11.3	703	64
14.		Canon 350D	APS-C	8.0	3456	2304	none	21.8	10.8	637	60
15.		Canon XT	APS-C	8.0	3456	2304	none	21.8	10.8	637	60
16.		Nikon D40X	APS-C	10.0	3872	2592	none	22.4	11.4	516	63

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. The 400D and the XTi 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 (0.49x). The following table reports on some other key feature differences and similarities of the Canon 400D, the Canon XTi, 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 400D	optical	n	2.5 / 230	fixed	n	1/4000s	3.0/s	Y	n
2.		Canon XTi	optical	n	2.5 / 230	fixed	n	1/4000s	3.0/s	Y	n
3.		Canon 750D	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
4.		Canon 760D	optical	Y	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
5.		Canon 650D	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
6.		Canon T4i	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
7.		Canon 1100D	optical	n	2.7 / 230	fixed	n	1/4000s	3.0/s	Y	n
8.		Canon T3	optical	n	2.7 / 230	fixed	n	1/4000s	3.0/s	Y	n
9.		Canon 550D	optical	n	3.0 / 1040	fixed	n	1/4000s	3.7/s	Y	n
10.		Canon 500D	optical	n	3.0 / 920	fixed	n	1/4000s	3.4/s	Y	n
11.		Canon 450D	optical	n	3.0 / 230	fixed	n	1/4000s	3.5/s	Y	n
12.		Canon XS	optical	n	2.5 / 230	fixed	n	1/4000s	3.0/s	Y	n
13.		Canon 40D	optical	Y	3.0 / 230	fixed	n	1/8000s	6.5/s	Y	n
14.		Canon 350D	optical	n	1.8 / 115	fixed	n	1/4000s	3.0/s	Y	n
15.		Canon XT	optical	n	1.8 / 115	fixed	n	1/4000s	3.0/s	Y	n
16.		Nikon D40X	optical	n	2.5 / 230	fixed	n	1/4000s	3.0/s	Y	n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

Concerning the storage of imaging data, both the 400D and the XTi write their files to Compact Flash 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 400D and Canon EOS Rebel XTi 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 400D	Y	- / -	-	-	-	2.0	-	-	-
2.		Canon XTi	Y	- / -	-	-	-	2.0	-	-	-
3.		Canon 750D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
4.		Canon 760D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
5.		Canon 650D	Y	stereo / mono	Y	-	mini	2.0	-	-	-
6.		Canon T4i	Y	stereo / mono	Y	-	mini	2.0	-	-	-
7.		Canon 1100D	Y	stereo / mono	-	-	mini	2.0	-	-	-
8.		Canon T3	Y	stereo / mono	-	-	mini	2.0	-	-	-
9.		Canon 550D	Y	stereo / -	Y	-	mini	2.0	-	-	-
10.		Canon 500D	Y	mono / mono	-	-	mini	2.0	-	-	-
11.		Canon 450D	Y	- / -	-	-	mini	2.0	-	-	-
12.		Canon XS	Y	- / -	-	-	-	2.0	-	-	-
13.		Canon 40D	Y	- / -	-	-	-	2.0	-	-	-
14.		Canon 350D	Y	- / -	-	-	-	2.0	-	-	-
15.		Canon XT	Y	- / -	-	-	-	2.0	-	-	-
16.		Nikon D40X	Y	- / -	-	-	-	2.0	-	-	-

Both the 400D and the XTi have been discontinued, but can regularly be found used on ebay. The 400D was replaced by the Canon 450D, while the XTi was followed by the Canon Xsi. Further information on the features and operation of the 400D and XTi can be found, respectively, in the Canon 400D Manual (free pdf) or the online Canon XTi Manual.

Review summary

So what conclusions can be drawn? Is there a clear favorite between the Canon 400D and the Canon XTi? Which camera is better? The listing below highlights the relative strengths of the two models.

Arguments in favor of the Canon EOS 400D:

• Well, not many: Does not have any feature that gives it a substantial advantage over the XTi.

Reasons to prefer the Canon EOS Rebel XTi:

• Well, not many: Does not offer any functionality that gives it a clear advantage over the 400D.

If the count of relative strengths (bullet points above) is taken as a measure, the match-up finishes in a tie (0 points each).

How about other alternatives? Do the specifications of the Canon 400D and the Canon XTi 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 specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it says little about, for example, the shooting experience and imaging performance of the 400D and the XTi 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 (USD)	Street Price
1.		Canon 400D	..	+ +	..	+ +	o	4/5	Aug 2006	799	ebay.com
2.		Canon XTi	..	+ +	..	+ +	o	4/5	Aug 2006	799	ebay.com
3.		Canon 750D	5/5	..	..	75/100	4.5/5	4.5/5	Feb 2015	749	ebay.com
4.		Canon 760D	5/5	+	..	77/100	4.5/5	4.5/5	Feb 2015	649	ebay.com
5.		Canon 650D	4/5	+ +	..	77/100	4.5/5	4.5/5	Jun 2012	849	ebay.com
6.		Canon T4i	4/5	+ +	..	77/100	4.5/5	4.5/5	Jun 2012	849	ebay.com
7.		Canon 1100D	..	80/100	..	69/100	4/5	4.5/5	Feb 2011	449	ebay.com
8.		Canon T3	..	80/100	..	69/100	4/5	4.5/5	Feb 2011	449	ebay.com
9.		Canon 550D	..	+ +	..	77/100	4/5	4.5/5	Feb 2010	699	ebay.com
10.		Canon 500D	..	+ +	..	74/100	4.5/5	4.5/5	Mar 2009	799	ebay.com
11.		Canon 450D	..	+ +	..	+ +	4/5	4.5/5	Jan 2008	799	ebay.com
12.		Canon XS	..	82/100	..	+ +	3.5/5	4.5/5	Jun 2008	449	ebay.com
13.		Canon 40D	..	+ +	..	+ +	4.5/5	4.5/5	Aug 2007	1,299	ebay.com
14.		Canon 350D	..	80/100	..	+ +	o	..	Feb 2005	899	ebay.com
15.		Canon XT	..	80/100	..	+ +	o	..	Feb 2005	899	ebay.com
16.		Nikon D40X	..	79/100	..	+ +	4/5	4/5	Mar 2007	729	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. A score, therefore, has to be seen in close connection to the price and market introduction time 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 would like to check on the differences and similarities of other camera models, just use the search menu 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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