Canon 70D vs T7i

The Canon EOS 70D and the Canon EOS Rebel T7i (labelled Canon 800D in some countries) are two digital cameras that were revealed to the public, respectively, in July 2013 and February 2017. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The 70D has a resolution of 20 megapixels, whereas the T7i 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 70D		Canon T7i
Digital single lens reflex		Digital single lens reflex
Canon EF mount lenses		Canon EF mount lenses
20 MP – APS-C sensor		24 MP – APS-C sensor
1080/30p Video		1080/60p Video
ISO 100-12,800 (100 - 25,600)		ISO 100-25,600 (100 - 51,200)
Optical viewfinder		Optical viewfinder
3.0" LCD – 1040k dots		3.0" LCD – 1040k dots
Swivel touchscreen		Swivel touchscreen
7 shutter flaps per second		6 shutter flaps per second
Weathersealed body		not weather sealed
920 shots per battery charge		600 shots per battery charge
139 x 104 x 79 mm, 755 g		131 x 100 x 76 mm, 532 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 70D and the Canon EOS Rebel T7i? 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 70D and the Canon T7i are illustrated 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 measures 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 T7i is notably smaller (9 percent) than the Canon 70D. Moreover, the T7i is markedly lighter (30 percent) than the 70D. It is worth mentioning in this context that the 70D is splash and dust resistant, while the T7i does not feature any corresponding weather-sealing.

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 70D gets 920 shots out of its Canon LP-E6 battery, while the T7i can take 600 images on a single charge of its Canon LP-E17 power pack.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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 70D	139 mm	104 mm	79 mm	755 g	920	Y	Jul 2013	EUR 1 099	ebay.com
2.		Canon T7i	131 mm	100 mm	76 mm	532 g	600	n	Feb 2017	EUR 849	ebay.com
3.		Canon 6D	145 mm	111 mm	71 mm	770 g	1090	Y	Sep 2012	EUR 1 999	ebay.com
4.		Canon 7D	148 mm	111 mm	74 mm	860 g	800	Y	Sep 2009	EUR 1 499	ebay.com
5.		Canon 7D II	149 mm	112 mm	78 mm	910 g	670	Y	Sep 2014	EUR 1 699	ebay.com
6.		Canon 50D	146 mm	108 mm	74 mm	822 g	800	Y	Aug 2008	EUR 1 099	ebay.com
7.		Canon 60D	145 mm	106 mm	79 mm	755 g	1100	Y	Aug 2010	EUR 1 149	ebay.com
8.		Canon 77D	131 mm	100 mm	76 mm	540 g	600	n	Feb 2017	EUR 899	ebay.com
9.		Canon 80D	139 mm	105 mm	79 mm	730 g	960	Y	Feb 2016	EUR 1 285	ebay.com
10.		Canon G3 X	123 mm	77 mm	105 mm	733 g	300	Y	Jun 2015	EUR 899	ebay.com
11.		Canon T5i	133 mm	100 mm	79 mm	580 g	440	n	Mar 2013	EUR 599	ebay.com
12.		Canon T6i	132 mm	101 mm	78 mm	555 g	440	n	Feb 2015	EUR 699	ebay.com
13.		Canon T7	129 mm	101 mm	78 mm	475 g	500	n	Feb 2018	EUR 499	amazon.com
14.		Canon T8i	131 mm	103 mm	76 mm	515 g	800	n	Feb 2020	EUR 899	ebay.com
15.		Nikon D7100	136 mm	107 mm	76 mm	765 g	950	Y	Feb 2013	EUR 1 179	ebay.com
16.		Sony RX10	129 mm	88 mm	102 mm	813 g	420	Y	Oct 2013	EUR 1 199	ebay.com
17.		Sony RX10 II	129 mm	88 mm	102 mm	813 g	400	Y	Jun 2015	EUR 1 599	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 T7i was launched at a markedly lower price (by 38 percent) than the 70D, which puts it into a different market segment. 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.

Sensor comparison

The size of the sensor inside a digital camera is one of the key determinants 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. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its 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, but their sensors differ slightly in size. The sensor area in the T7i is 2 percent smaller. 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 T7i uses a more advanced image processing engine (DIGIC 7) than the 70D (DIGIC 5+), with benefits for noise reduction, color accuracy, and processing speed.

Despite having a slightly smaller sensor, the T7i offers a higher resolution of 24 megapixels, compared with 20 MP of the 70D. 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 3.72μm versus 4.11μm for the 70D). However, it should be noted that the T7i is much more recent (by 3 years and 7 months) than the 70D, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently.

The resolution advantage of the Canon T7i implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the T7i 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 70D are 27.4 x 18.2 inches or 69.5 x 46.3 cm for good quality, 21.9 x 14.6 inches or 55.6 x 37.1 cm for very good quality, and 18.2 x 12.2 inches or 46.3 x 30.9 cm for excellent quality prints.

The Canon EOS 70D has a native sensitivity range from ISO 100 to ISO 12800, which can be extended to ISO 100-25600. The corresponding ISO settings for the Canon EOS Rebel T7i are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 100-51200.

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.

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 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 70D	APS-C	20.0	5472	3648	1080/30p	22.5	11.6	926	68
2.		Canon T7i	APS-C	24.0	6000	4000	1080/60p	23.7	13.1	1586	80
3.		Canon 6D	Full Frame	20.0	5472	3648	1080/30p	23.8	12.1	2340	82
4.		Canon 7D	APS-C	17.9	5184	3456	1080/30p	22.0	11.7	854	66
5.		Canon 7D II	APS-C	20.0	5472	3648	1080/60p	22.4	11.8	1082	70
6.		Canon 50D	APS-C	15.1	4752	3168	none	21.8	11.4	696	63
7.		Canon 60D	APS-C	17.9	5184	3456	1080/30p	22.2	11.5	813	66
8.		Canon 77D	APS-C	24.0	6000	4000	1080/60p	23.6	13.3	971	78
9.		Canon 80D	APS-C	24.0	6000	4000	1080/60p	23.6	13.2	1135	79
10.		Canon G3 X	1-inch	20.0	5472	3648	1080/60p	21.4	12.3	521	63
11.		Canon T5i	APS-C	17.9	5184	3456	1080/30p	21.7	11.2	681	61
12.		Canon T6i	APS-C	24.0	6000	4000	1080/30p	22.7	12.0	919	71
13.		Canon T7	APS-C	24.0	6000	4000	1080/30p	23.8	13.3	1684	81
14.		Canon T8i	APS-C	24.0	6000	4000	4K/24p	24.0	13.5	1873	83
15.		Nikon D7100	APS-C	24.0	6000	4000	1080/60p	24.2	13.7	1256	83
16.		Sony RX10	1-inch	20.0	5472	3648	1080/60p	22.9	12.6	474	69
17.		Sony RX10 II	1-inch	20.0	5472	3648	4K/30p	23.0	12.6	531	70
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 T7i provides a faster frame rate than the 70D. It can shoot movie footage at 1080/60p, while the 70D is limited to 1080/30p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. The 70D and the T7i 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 viewfinder in the 70D offers a wider field of view (98%) than the one in the T7i (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the 70D has a higher magnification (0.59x vs 0.51x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The table below summarizes some of the other core capabilities of the Canon 70D and Canon T7i in connection with corresponding information for a sample of similar 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 70D	optical	Y	3.0 / 1040	swivel	Y	1/8000s	7.0/s	Y	n
2.		Canon T7i	optical	n	3.0 / 1040	swivel	Y	1/4000s	6.0/s	Y	n
3.		Canon 6D	optical	Y	3.0 / 1040	fixed	n	1/4000s	4.5/s	n	n
4.		Canon 7D	optical	Y	3.0 / 920	fixed	n	1/8000s	8.0/s	Y	n
5.		Canon 7D II	optical	Y	3.0 / 1040	fixed	n	1/8000s	10.0/s	Y	n
6.		Canon 50D	optical	Y	3.0 / 920	fixed	n	1/8000s	6.3/s	Y	n
7.		Canon 60D	optical	Y	3.0 / 1040	swivel	n	1/8000s	5.3/s	Y	n
8.		Canon 77D	optical	Y	3.0 / 1040	swivel	Y	1/4000s	6.0/s	Y	n
9.		Canon 80D	optical	Y	3.0 / 1040	swivel	Y	1/8000s	7.0/s	Y	n
10.		Canon G3 X	optional	n	3.2 / 1620	tilting	Y	1/2000s	5.9/s	Y	Y
11.		Canon T5i	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
12.		Canon T6i	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
13.		Canon T7	optical	n	3.0 / 920	fixed	n	1/4000s	3.0/s	Y	n
14.		Canon T8i	optical	n	3.0 / 1040	swivel	Y	1/4000s	7.5/s	Y	n
15.		Nikon D7100	optical	Y	3.2 / 1229	fixed	n	1/8000s	6.0/s	Y	n
16.		Sony RX10	1440	Y	3.0 / 1229	tilting	n	1/3200s	10.0/s	Y	Y
17.		Sony RX10 II	2359	Y	3.0 / 1229	tilting	n	1/3200s	14.0/s	Y	Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One feature that is present on the 70D, but is missing on the T7i is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.

Concerning the storage of imaging data, both the 70D and the T7i write their files to SDXC cards. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.

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 70D and Canon EOS Rebel T7i 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 70D	Y	stereo / mono	Y	-	mini	2.0	Y	-	-
2.		Canon T7i	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
3.		Canon 6D	Y	mono / mono	Y	-	mini	2.0	Y	-	-
4.		Canon 7D	Y	mono / -	Y	-	mini	2.0	-	-	-
5.		Canon 7D II	Y	stereo / mono	Y	Y	mini	3.0	-	-	-
6.		Canon 50D	Y	- / -	-	-	mini	2.0	-	-	-
7.		Canon 60D	Y	mono / mono	Y	-	mini	2.0	-	-	-
8.		Canon 77D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
9.		Canon 80D	Y	stereo / mono	Y	Y	mini	2.0	Y	Y	-
10.		Canon G3 X	Y	stereo / mono	Y	Y	mini	2.0	Y	Y	-
11.		Canon T5i	Y	stereo / mono	Y	-	mini	2.0	-	-	-
12.		Canon T6i	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
13.		Canon T7	Y	mono / mono	-	-	mini	2.0	Y	Y	-
14.		Canon T8i	Y	stereo / mono	Y	-	mini	2.0	Y	-	Y
15.		Nikon D7100	Y	stereo / mono	Y	Y	mini	2.0	-	-	-
16.		Sony RX10	Y	stereo / mono	Y	Y	micro	2.0	Y	Y	-
17.		Sony RX10 II	Y	stereo / mono	Y	Y	micro	2.0	Y	Y	-

Both the 70D and the T7i have been discontinued, but can regularly be found used on ebay. The 70D was replaced by the Canon 80D, while the T7i was followed by the Canon T8i. Further information on the features and operation of the 70D and T7i can be found, respectively, in the Canon 70D Manual (free pdf) or the online Canon T7i Manual.

Review summary

So how do things add up? Is there a clear favorite between the Canon 70D and the Canon T7i? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.

Advantages of the Canon EOS 70D:

• More complete view: Has a viewfinder with a larger field of view (98% vs 95%).
• Larger viewfinder image: Features a viewfinder with a higher magnification (0.59x vs 0.51x).
• Easier setting verification: Features an LCD display on top to control shooting parameters.
• Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
• Faster burst: Shoots at higher frequency (7 vs 6 flaps/sec) to capture the decisive moment.
• Longer lasting: Can take more shots (920 versus 600) on a single battery charge.
• Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
• More heavily discounted: Has been available for much longer (launched in July 2013).

Reasons to prefer the Canon EOS Rebel T7i:

• More detail: Has more megapixels (24 vs 20MP), which boosts linear resolution by 10%.
• Better jpgs: Has a more modern image processing engine (DIGIC 7 vs DIGIC 5+).
• Better video: Provides higher movie framerates (1080/60p versus 1080/30p).
• Less heavy: Has a lower weight (by 223g or 30 percent) and is thus easier to take along.
• Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
• Easier wireless transfer: Supports Bluetooth for image sharing without cables.
• More affordable: Was introduced into a lower priced category (38 percent cheaper at launch).
• More modern: Reflects 3 years and 7 months of technical progress since the 70D launch.

If the count of relative strengths (bullet points above) is taken as a measure, the match-up finishes in a tie (8 points each). 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 70D and the Canon T7i 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 technical specifications can provide a useful overview of the capabilities of different cameras, it says little about, for example, the shooting experience and imaging performance of the 70D and the T7i 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 where reviews by experts come in. 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 70D	5/5	+ +	..	83/100	4.5/5	5/5	Jul 2013	EUR 1 099	ebay.com
2.		Canon T7i	4.5/5	..	3.5/5	80/100	4.5/5	4/5	Feb 2017	EUR 849	ebay.com
3.		Canon 6D	5/5	+ +	..	83/100	4.5/5	4.5/5	Sep 2012	EUR 1 999	ebay.com
4.		Canon 7D	5/5	+ +	..	84/100	4.5/5	4.5/5	Sep 2009	EUR 1 499	ebay.com
5.		Canon 7D II	4.5/5	+	3.5/5	84/100	4/5	4.5/5	Sep 2014	EUR 1 699	ebay.com
6.		Canon 50D	..	+ +	..	+ +	4.5/5	4.5/5	Aug 2008	EUR 1 099	ebay.com
7.		Canon 60D	5/5	+	..	79/100	4/5	4.5/5	Aug 2010	EUR 1 149	ebay.com
8.		Canon 77D	4.5/5	..	4/5	82/100	4.5/5	4/5	Feb 2017	EUR 899	ebay.com
9.		Canon 80D	4/5	+ +	4.5/5	84/100	4.5/5	4.5/5	Feb 2016	EUR 1 285	ebay.com
10.		Canon G3 X	3.5/5	+	..	..	4.5/5	4/5	Jun 2015	EUR 899	ebay.com
11.		Canon T5i	..	..	..	76/100	4.5/5	4.5/5	Mar 2013	EUR 599	ebay.com
12.		Canon T6i	5/5	..	..	75/100	4.5/5	4.5/5	Feb 2015	EUR 699	ebay.com
13.		Canon T7	..	o	3.5/5	..	3.5/5	3.5/5	Feb 2018	EUR 499	amazon.com
14.		Canon T8i	4.5/5	+	3/5	80/100	4/5	3.5/5	Feb 2020	EUR 899	ebay.com
15.		Nikon D7100	5/5	+ +	..	85/100	4.5/5	4.5/5	Feb 2013	EUR 1 179	ebay.com
16.		Sony RX10	5/5	+	..	80/100	4.5/5	4.5/5	Oct 2013	EUR 1 199	ebay.com
17.		Sony RX10 II	5/5	+ +	..	82/100	4.5/5	4/5	Jun 2015	EUR 1 599	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 comparisons of ratings among very different cameras or across long time periods 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 would like to check on the differences and similarities of other camera models, just make your choice using the following search menu. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

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