Canon SX400 vs T6i

The Canon PowerShot SX400 IS and the Canon EOS Rebel T6i (labelled Canon 750D in some countries) are two digital cameras that were officially introduced, respectively, in July 2014 and February 2015. The SX400 is a fixed lens compact, while the T6i is a DSLR. The cameras are based on a 1/2.3-inch (SX400) and an APS-C (T6i) sensor. The SX400 has a resolution of 15.9 megapixels, whereas the T6i provides 24 MP.

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

Headline Specifications

Canon SX400		Canon T6i
Fixed lens compact camera		Digital single lens reflex
24-720mm f/3.4-5.8		Canon EF mount lenses
15.9 MP – 1/2.3" sensor		24 MP – APS-C sensor
720/30p Video		1080/30p Video
ISO 100-1,600		ISO 100-12,800 (100 - 25,600)
No viewfinder, LCD framing		Optical viewfinder
3.0" LCD – 230k dots		3.0" LCD – 1040k dots
Fixed screen (not touch-sensitive)		Swivel touchscreen
0.8 shutter flaps per second		5 shutter flaps per second
190 shots per battery charge		440 shots per battery charge
104 x 69 x 80 mm, 313 g		132 x 101 x 78 mm, 555 g

Check SX400 offers at
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Check T6i offers at
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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon PowerShot SX400 IS and the Canon EOS Rebel T6i? 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 SX400 and the Canon T6i. 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 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 T6i is considerably larger (86 percent) than the Canon SX400. In this context, it is worth noting that neither the SX400 nor the T6i are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the SX400 has a lens built in, whereas the T6i 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 T6i and their specifications in the Canon EF Lens Catalog.

Concerning battery life, the SX400 gets 190 shots out of its Canon NB-11LH battery, while the T6i can take 440 images on a single charge of its Canon LP-E17 power pack.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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 SX400	104 mm	69 mm	80 mm	313 g	190	n	Jul 2014	US$ 249	ebay.com
2.		Canon T6i	132 mm	101 mm	78 mm	555 g	440	n	Feb 2015	US$ 749	ebay.com
3.		Canon 77D	131 mm	100 mm	76 mm	540 g	600	n	Feb 2017	US$ 899	ebay.com
4.		Canon SX60	128 mm	93 mm	114 mm	650 g	340	n	Sep 2014	US$ 549	ebay.com
5.		Canon SX410	104 mm	69 mm	85 mm	325 g	185	n	Feb 2015	US$ 279	ebay.com
6.		Canon SX420	104 mm	69 mm	85 mm	325 g	195	n	Jan 2016	US$ 299	ebay.com
7.		Canon SX510	104 mm	70 mm	80 mm	349 g	250	n	Aug 2013	US$ 249	ebay.com
8.		Canon SX530	120 mm	82 mm	92 mm	442 g	210	n	Jan 2015	US$ 429	ebay.com
9.		Canon SX600	104 mm	61 mm	26 mm	188 g	290	n	Jan 2014	US$ 249	ebay.com
10.		Canon SX610	105 mm	61 mm	27 mm	191 g	270	n	Jan 2015	US$ 249	ebay.com
11.		Canon SX700	113 mm	66 mm	35 mm	269 g	250	n	Feb 2014	US$ 349	ebay.com
12.		Canon SX710	113 mm	66 mm	35 mm	269 g	230	n	Jan 2015	US$ 349	ebay.com
13.		Canon T4i	133 mm	100 mm	79 mm	575 g	440	n	Jun 2012	US$ 849	ebay.com
14.		Canon T5i	133 mm	100 mm	79 mm	580 g	440	n	Mar 2013	US$ 649	ebay.com
15.		Canon T6s	132 mm	101 mm	78 mm	565 g	440	n	Feb 2015	US$ 649	ebay.com
16.		Canon T7i	131 mm	100 mm	76 mm	532 g	600	n	Feb 2017	US$ 749	ebay.com
17.		Nikon L840	113 mm	78 mm	96 mm	538 g	590	n	Feb 2015	US$ 299	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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The SX400 was launched at a lower price than the T6i, 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 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. 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 associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Canon SX400 features a 1/2.3-inch sensor and the Canon T6i an APS-C sensor. The sensor area in the T6i 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 SX400 has a native 4:3 aspect ratio, while the one in the T6i offers a 3:2 aspect.

Technology-wise, the T6i uses a more advanced image processing engine (DIGIC 6) than the SX400 (DIGIC 4+), with benefits for noise reduction, color accuracy, and processing speed.

With 24MP, the T6i offers a higher resolution than the SX400 (15.9MP), but the T6i nevertheless has larger individual pixels (pixel pitch of 3.72μm versus 1.33μm for the SX400) due to its larger sensor. Moreover, the T6i is a somewhat more recent model (by 6 months) than the SX400, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the SX400 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Canon T6i implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the T6i 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 SX400 are 23 x 17.3 inches or 58.5 x 43.9 cm for good quality, 18.4 x 13.8 inches or 46.8 x 35.1 cm for very good quality, and 15.4 x 11.5 inches or 39 x 29.3 cm for excellent quality prints.

The T6i has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Canon PowerShot SX400 IS has a native sensitivity range from ISO 100 to ISO 1600. The corresponding ISO settings for the Canon EOS Rebel T6i are ISO 100 to ISO 12800, with the possibility to increase the ISO range to 100-25600.

In terms of underlying technology, the SX400 is build around a CCD sensor, while the T6i 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.

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 SX400	1/2.3	15.9	4608	3456	720/30p	20.1	11.5	672	46
2.		Canon T6i	APS-C	24.0	6000	4000	1080/30p	22.7	12.0	919	71
3.		Canon 77D	APS-C	24.0	6000	4000	1080/60p	23.6	13.3	971	78
4.		Canon SX60	1/2.3	14.2	4608	3072	1080/60p	19.2	10.8	127	39
5.		Canon SX410	1/2.3	19.9	5152	3864	720/30p	20.2	11.6	720	47
6.		Canon SX420	1/2.3	19.9	5152	3864	720/25p	20.3	11.7	806	48
7.		Canon SX510	1/2.3	15.9	4608	3456	1080/24p	20.0	11.3	586	45
8.		Canon SX530	1/2.3	15.9	4608	3456	1080/30p	20.2	11.6	712	47
9.		Canon SX600	1/2.3	15.9	4608	3456	1080/30p	20.0	11.4	620	45
10.		Canon SX610	1/2.3	20.2	5184	3888	1080/30p	20.2	11.6	712	47
11.		Canon SX700	1/2.3	15.9	4608	3456	1080/60p	20.1	11.4	629	45
12.		Canon SX710	1/2.3	20.2	5184	3888	1080/60p	20.2	11.6	712	47
13.		Canon T4i	APS-C	17.9	5184	3456	1080/30p	21.7	11.2	722	62
14.		Canon T5i	APS-C	17.9	5184	3456	1080/30p	21.7	11.2	681	61
15.		Canon T6s	APS-C	24.0	6000	4000	1080/30p	22.6	12.0	915	70
16.		Canon T7i	APS-C	24.0	6000	4000	1080/60p	23.7	13.1	1586	80
17.		Nikon L840	1/2.3	15.9	4608	3456	1080/60i	20.2	11.6	721	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 T6i provides a better video resolution than the SX400. It can shoot movie footage at 1080/30p, while the SX400 is limited to 720/30p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the T6i has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the SX400 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 SX400, the Canon T6i, 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 SX400	none	n	3.0 / 230	fixed	n	1/1600s	0.8/s	Y	Y
2.		Canon T6i	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
3.		Canon 77D	optical	Y	3.0 / 1040	swivel	Y	1/4000s	6.0/s	Y	n
4.		Canon SX60	922	n	3.0 / 922	swivel	n	1/2000s	6.4/s	Y	Y
5.		Canon SX410	none	n	3.0 / 230	fixed	n	1/4000s	0.5/s	Y	Y
6.		Canon SX420	none	n	3.0 / 230	fixed	n	1/4000s	0.5/s	Y	Y
7.		Canon SX510	none	n	3.0 / 461	fixed	n	1/1600s	3.8/s	Y	Y
8.		Canon SX530	none	n	3.0 / 461	fixed	n	1/2000s	1.6/s	Y	Y
9.		Canon SX600	none	n	3.0 / 461	fixed	n	1/2000s	3.9/s	Y	Y
10.		Canon SX610	none	n	3.0 / 922	fixed	n	1/2000s	2.5/s	Y	Y
11.		Canon SX700	none	n	3.0 / 922	fixed	n	1/3200s	8.5/s	Y	Y
12.		Canon SX710	none	n	3.0 / 922	fixed	n	1/3200s	6.0/s	Y	Y
13.		Canon T4i	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
14.		Canon T5i	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
15.		Canon T6s	optical	Y	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
16.		Canon T7i	optical	n	3.0 / 1040	swivel	Y	1/4000s	6.0/s	Y	n
17.		Nikon L840	none	n	3.0 / 921	tilting	n	1/4000s	7.4/s	Y	Y
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 T6i has a touchscreen, while the SX400 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

Concerning the storage of imaging data, both the SX400 and the T6i write their files to SDXC cards. The T6i supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the SX400 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 PowerShot SX400 IS and Canon EOS Rebel T6i 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 SX400	-	stereo / mono	-	-	-	2.0	-	-	-
2.		Canon T6i	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
3.		Canon 77D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
4.		Canon SX60	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
5.		Canon SX410	-	stereo / mono	-	-	-	2.0	-	-	-
6.		Canon SX420	-	mono / mono	-	-	-	2.0	Y	Y	-
7.		Canon SX510	-	stereo / mono	-	-	mini	2.0	Y	-	-
8.		Canon SX530	-	stereo / mono	-	-	mini	2.0	Y	Y	-
9.		Canon SX600	-	mono / mono	-	-	micro	2.0	Y	Y	-
10.		Canon SX610	-	- / -	-	-	micro	2.0	Y	Y	-
11.		Canon SX700	-	stereo / mono	-	-	micro	2.0	Y	Y	-
12.		Canon SX710	-	stereo / mono	-	-	micro	2.0	Y	Y	-
13.		Canon T4i	Y	stereo / mono	Y	-	mini	2.0	-	-	-
14.		Canon T5i	Y	stereo / mono	Y	-	mini	2.0	-	-	-
15.		Canon T6s	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
16.		Canon T7i	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
17.		Nikon L840	-	stereo / mono	-	-	micro	2.0	Y	Y	-

It is notable that the T6i offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the SX400 does not provide wifi capability.

Both the SX400 and the T6i have been discontinued, but can regularly be found used on ebay. The SX400 was replaced by the Canon SX410, while the T6i was followed by the Canon T7i. Further information on the features and operation of the SX400 and T6i can be found, respectively, in the Canon SX400 Manual (free pdf) or the online Canon T6i Manual.

Review summary

So how do things add up? Is the Canon SX400 better than the Canon T6i or vice versa? Below is a summary of the relative strengths of each of the two contestants.

Arguments in favor of the Canon PowerShot SX400 IS:

• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• Ready to shoot: Comes with a built-in lens, while the T6i requires a separate lens.
• More compact: Is smaller (104x69mm vs 132x101mm) and thus needs less room in the bag.
• Less heavy: Is lighter even though it comes with a built-in lens (unlike the T6i).
• Sharper images: Has hand-shake reducing image stabilization built-in.
• More affordable: Was introduced at a lower price, despite coming with a built-in lens.
• More heavily discounted: Has been on the market for longer (launched in July 2014).

Reasons to prefer the Canon EOS Rebel T6i:

• More detail: Has more megapixels (24 vs 15.9MP), which boosts linear resolution by 25%.
• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• Better image quality: Is equipped with a larger and more technologically advanced 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 6 vs DIGIC 4+).
• Better video: Provides higher definition movie capture (1080/30p 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.
• 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).
• More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
• Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
• 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 1/1600s) to freeze action.
• Faster burst: Shoots at higher frequency (5 vs 0.8 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 190) out of a single battery charge.
• Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
• 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.
• Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
• More modern: Was introduced somewhat (6 months) more recently.

If the count of relative strengths (bullet points above) is taken as a measure, the T6i is the clear winner of the contest (24 : 7 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding 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 SX400 and the Canon T6i 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 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 SX400 or the T6i. 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 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 SX400	..	+	..	..	..	..	Jul 2014	US$ 249	ebay.com
2.		Canon T6i	5/5	..	..	75/100	4.5/5	4.5/5	Feb 2015	US$ 749	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 SX60	3/5	+ +	..	75/100	4/5	4.5/5	Sep 2014	US$ 549	ebay.com
5.		Canon SX410	..	o	..	..	..	..	Feb 2015	US$ 279	ebay.com
6.		Canon SX420	..	..	..	..	..	3/5	Jan 2016	US$ 299	ebay.com
7.		Canon SX510	..	+ +	..	..	4.5/5	4/5	Aug 2013	US$ 249	ebay.com
8.		Canon SX530	..	+ +	..	..	4/5	4/5	Jan 2015	US$ 429	ebay.com
9.		Canon SX600	..	+	..	..	4/5	4/5	Jan 2014	US$ 249	ebay.com
10.		Canon SX610	..	..	..	..	4/5	4/5	Jan 2015	US$ 249	ebay.com
11.		Canon SX700	..	+ +	..	..	4/5	4/5	Feb 2014	US$ 349	ebay.com
12.		Canon SX710	..	+	..	..	4/5	3.5/5	Jan 2015	US$ 349	ebay.com
13.		Canon T4i	4/5	+ +	..	77/100	4.5/5	4.5/5	Jun 2012	US$ 849	ebay.com
14.		Canon T5i	..	..	..	76/100	4.5/5	4.5/5	Mar 2013	US$ 649	ebay.com
15.		Canon T6s	5/5	+	..	77/100	4.5/5	4.5/5	Feb 2015	US$ 649	ebay.com
16.		Canon T7i	4.5/5	..	3.5/5	80/100	4.5/5	4/5	Feb 2017	US$ 749	ebay.com
17.		Nikon L840	..	+ +	..	..	3.5/5	4/5	Feb 2015	US$ 299	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. Hence, a score should always be seen in the context of the camera's market launch date and its price, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. 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

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