Canon 70D vs SL1

The Canon EOS 70D and the Canon EOS Rebel SL1 (labelled Canon 100D in some countries) are two digital cameras that were announced, respectively, in July 2013 and March 2013. 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 SL1 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 70D		Canon SL1
Digital single lens reflex		Digital single lens reflex
Canon EF mount lenses		Canon EF mount lenses
20 MP, APS-C Sensor		17.9 MP, APS-C Sensor
1080/30p Video		1080/30p Video
ISO 100-12800 (100-25600)		ISO 100-12800 (100-25600)
Optical viewfinder		Optical viewfinder
3.0" LCD, 1040k dots		3.0" LCD, 1040k dots
Swivel touchscreen		Fixed touchscreen
7 shutter flaps per second		4.9 shutter flaps per second
Weathersealed body		Not weather sealed
920 shots per battery charge		380 shots per battery charge
139 x 104 x 79 mm, 755 g		117 x 91 x 69 mm, 407 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 70D and the Canon EOS Rebel SL1? 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: Canon 70D vs SL1

The side-by-side display below illustrates the physical size and weight of the Canon 70D and the Canon SL1. 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.

The SL1 can be obtained in two different colors (black, white), while the 70D 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 SL1 is notably smaller (26 percent) than the Canon 70D. Moreover, the SL1 is substantially lighter (46 percent) than the 70D. It is worth mentioning in this context that the 70D is splash and dust resistant, while the SL1 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 LP-E6 battery, while the SL1 can take 380 images on a single charge of its LP-E12 power pack.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you would like to visualize and compare a different camera combination, just use the right or left arrows in the table to switch to the respective camera. Alternatively, you can also navigate to the CAM-parator app and make your selection from the full list of cameras there.

Camera Body Specifications

	Camera Model	Camera Width	Camera Height	Camera Depth	Camera Weight	Battery Life (CIPA)	Weather Sealing (yes/no)	Camera Launch (announced)	Launch Price (USD)	Street Price (USD)	Used Price (USD)	Camera Model
	Canon 70D»	5.5 in	4.1 in	3.1 in	26.6 oz	920	Y	Jul 2013	1,199	-		Canon 70D
	Canon SL1«	4.6 in	3.6 in	2.7 in	14.4 oz	380	n	Mar 2013	549	-		Canon SL1
	Canon SL2« »	4.8 in	3.7 in	2.8 in	16.0 oz	650	n	Jun 2017	549	-		Canon SL2
	Canon 80D« »	5.5 in	4.1 in	3.1 in	25.8 oz	960	Y	Feb 2016	1,199			Canon 80D
	Canon T6« »	5.1 in	4.0 in	3.1 in	17.1 oz	500	n	Mar 2016	449	-		Canon T6
	Canon G3 X« »	4.8 in	3.0 in	4.1 in	25.9 oz	300	Y	Jun 2015	999			Canon G3 X
	Canon M10« »	4.3 in	2.6 in	1.4 in	10.6 oz	255	n	Oct 2015	499	-		Canon M10
	Canon 7D II« »	5.9 in	4.4 in	3.1 in	32.1 oz	670	Y	Sep 2014	1,799			Canon 7D II
	Canon T5« »	5.1 in	3.9 in	3.1 in	16.9 oz	500	n	Feb 2014	449	-		Canon T5
	Canon T5i« »	5.2 in	3.9 in	3.1 in	20.5 oz	440	n	Mar 2013	649	-		Canon T5i
	Canon 6D« »	5.7 in	4.4 in	2.8 in	27.2 oz	1090	Y	Sep 2012	2,099	-		Canon 6D
	Canon 60D« »	5.7 in	4.2 in	3.1 in	26.6 oz	1100	Y	Aug 2010	1,399	-		Canon 60D
	Canon 7D« »	5.8 in	4.4 in	2.9 in	30.3 oz	800	Y	Sep 2009	1,699	-		Canon 7D
	Canon 50D« »	5.7 in	4.3 in	2.9 in	29.0 oz	800	Y	Aug 2008	1,299	-		Canon 50D
	Nikon D7100« »	5.4 in	4.2 in	3.0 in	27.0 oz	950	Y	Feb 2013	1,199	-		Nikon D7100
	Sony RX10« »	5.1 in	3.5 in	4.0 in	28.7 oz	420	Y	Oct 2013	1,299	-		Sony RX10
Convert to Metric
Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.

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 SL1 was launched at a markedly lower price (by 54 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: Canon 70D vs SL1

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. 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 tend to be associated with larger, more expensive camera bodies and lenses.

Both cameras under consideration feature an APS-C sensor, but their sensors differ slightly in size. The sensor area in the SL1 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.

In terms of chip-set technology, the 70D uses a more advanced image processing engine (DIGIC 5+) than the SL1 (DIGIC 5), with benefits for noise reduction, color accuracy, and processing speed.

With 20MP, the 70D offers a higher resolution than the SL1 (17.9MP), but the 70D has smaller individual pixels (pixel pitch of 4.11μm versus 4.31μm for the SL1). However, the 70D is a somewhat more recent model (by 3 months) than the SL1, and its sensor might have benefitted from technological advances during this time that enhance the light gathering capacity of its pixels.

The resolution advantage of the Canon 70D implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 70D for good quality output (200 dots per inch) amounts to 27.4 x 18.2 inch or 69.5 x 46.3 cm, for very good quality (250 dpi) 21.9 x 14.6 inch or 55.6 x 37.1 cm, and for excellent quality (300 dpi) 18.2 x 12.2 inch or 46.3 x 30.9 cm. The corresponding values for the Canon SL1 are 25.9 x 17.3 inch or 65.8 x 43.9 cm for good quality, 20.7 x 13.8 inch or 52.7 x 35.1 cm for very good quality, and 17.3 x 11.5 inch or 43.9 x 29.3 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 Canon EOS Rebel SL1 offers exactly the same ISO settings.

For many cameras, data on sensor performance has been reported by DXO Mark. 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 review, the 70D has a notably higher overall DXO score than the SL1 (overall score 5 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 0.7 bits higher color depth, 0.3 EV in additional dynamic range, and 0.1 stops in additional low light sensitivity. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, and both provide the same movie specifications (1080/30p).

Feature comparison: Canon 70D vs SL1

Apart from body and sensor, cameras can and do differ across a variety of features. The 70D and the SL1 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 SL1 (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 0.54x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Canon 70D, the Canon SL1, and comparable cameras.

One feature that is present on the 70D, but is missing on the SL1 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 SL1 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: Canon 70D vs SL1

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 SL1 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

It is notable that the 70D offers wifi support, while the SL1 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

Both the 70D and the SL1 have been discontinued, but can regularly be found used on eBay. The SL1 was replaced by the Canon SL2, while the 70D was followed by the Canon 80D. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon website.

Review summary: Canon 70D vs SL1

So how do things add up? Is the Canon 70D better than the Canon SL1 or vice versa? The listing below highlights the relative strengths of the two models.

Reasons to prefer the Canon EOS 70D:

• More detail: Offers more megapixels (20 vs 17.9MP) with a 6% higher linear resolution.
• Better image quality: Scores markedly higher (5 points) in the DXO overall assessment.
• Better jpgs: Has a more modern image processing engine (DIGIC 5+ vs DIGIC 5).
• 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 0.54x).
• Easier setting verification: Features an LCD display on top to control shooting parameters.
• More flexible LCD: Has swivel screen for odd-angle shots in portrait or landscape orientation.
• More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
• Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
• Faster burst: Shoots at higher frequency (7 vs 4.9 flaps/sec) to capture the decisive moment.
• Longer lasting: Can take more shots (920 versus 380) on a single battery charge.
• Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
• Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
• More modern: Is somewhat more recent (announced 3 months after the SL1).

Arguments in favor of the Canon EOS Rebel SL1:

• More compact: Is smaller (117x91mm vs 139x104mm) and will fit more readily into a bag.
• Less heavy: Has a lower weight (by 348g or 46 percent) and is thus easier to take along.
• More affordable: Was introduced into a lower priced category (54 percent cheaper at launch).
• More heavily discounted: Has been on the market for longer (launched in March 2013).

If the count of relative strengths (bullet points above) is taken as a measure, the 70D is the clear winner of the match-up (14 : 4 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision on a new camera. A professional wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro 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 SL1 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 remains incomplete and does no justice, for example, to the way the 70D or the SL1 perform in practice. 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: Canon 70D vs SL1

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 (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.

Review Scores

	Camera Model						Camera Launch (announced)	Launch Price (USD)	Street Price (USD)	Used Price (USD)	Camera Model
	Canon 70D»	+ +	83/100	4.5/5	4.5/5	5/5	Jul 2013	1,199	-		Canon 70D
	Canon SL1«	+	78/100	4/5	4/5	4/5	Mar 2013	549	-		Canon SL1
	Canon SL2« »	+ +	78/100	4.5/5	4.5/5	4.5/5	Jun 2017	549	-		Canon SL2
	Canon 80D« »	+ +	84/100	4.5/5	4.5/5	4.5/5	Feb 2016	1,199			Canon 80D
	Canon T6« »	o	73/100	4/5	3.5/5	4/5	Mar 2016	449	-		Canon T6
	Canon G3 X« »	+	-	4.5/5	3.5/5	4/5	Jun 2015	999			Canon G3 X
	Canon M10« »	-	-	-	o	4/5	Oct 2015	499	-		Canon M10
	Canon 7D II« »	+	84/100	4/5	5/5	4.5/5	Sep 2014	1,799			Canon 7D II
	Canon T5« »	+	-	4/5	4/5	4.5/5	Feb 2014	449	-		Canon T5
	Canon T5i« »	-	76/100	4.5/5	4.5/5	4.5/5	Mar 2013	649	-		Canon T5i
	Canon 6D« »	+ +	83/100	4.5/5	4.5/5	4.5/5	Sep 2012	2,099	-		Canon 6D
	Canon 60D« »	+	79/100	4/5	5/5	4.5/5	Aug 2010	1,399	-		Canon 60D
	Canon 7D« »	+ +	84/100	4.5/5	5/5	4.5/5	Sep 2009	1,699	-		Canon 7D
	Canon 50D« »	+ +	+ +	4.5/5	5/5	4.5/5	Aug 2008	1,299	-		Canon 50D
	Nikon D7100« »	+ +	85/100	4.5/5	5/5	4.5/5	Feb 2013	1,199	-		Nikon D7100
	Sony RX10« »	+	80/100	4.5/5	4.5/5	4.5/5	Oct 2013	1,299	-		Sony RX10
Notes: (+ +) 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. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

Other camera comparisons

Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just use the search menu below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

Specifications: Canon 70D vs Canon SL1

Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.

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