Canon 6D vs SL1

The Canon EOS 6D and the Canon EOS Rebel SL1 (labelled Canon 100D in some countries) are two digital cameras that were officially introduced, respectively, in September 2012 and March 2013. Both are DSLR (Digital Single Lens Reflex) cameras that are based on a full frame (6D) and an APS-C (SL1) sensor. The 6D 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 6D		Canon SL1
Digital single lens reflex		Digital single lens reflex
Canon EF mount lenses		Canon EF mount lenses
20 MP, Full Frame Sensor		17.9 MP, APS-C Sensor
1080/30p Video		1080/30p Video
ISO 100-25600 (50-102400)		ISO 100-12800 (100-25600)
Optical viewfinder		Optical viewfinder
3.0" LCD, 1040k dots		3.0" LCD, 1040k dots
Fixed screen (not touch-sensitive)		Fixed touchscreen
4.5 shutter flaps per second		4.9 shutter flaps per second
Weathersealed body		Not weather sealed
1090 shots per battery charge		380 shots per battery charge
145 x 111 x 71 mm, 770 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 6D 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 6D vs SL1

The side-by-side display below illustrates the physical size and weight of the Canon 6D 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 size dimensions are rounded to the nearest millimeter.

The SL1 can be obtained in two different colors (black, white), while the 6D 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 considerably smaller (34 percent) than the Canon 6D. Moreover, the SL1 is substantially lighter (47 percent) than the 6D. It is worth mentioning in this context that the 6D 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. A larger imaging sensor (as in the 6D) will tend to go along with bigger and heavier lenses, while more compact options are available for the smaller-sensor camera (SL1). You can compare the optics available in the Canon EF Lens Catalog.

Concerning battery life, the 6D gets 1090 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. In case you want to display and compare another camera duo, just click on the right or left arrow next to the camera that you would like to inspect. Alternatively, you can also use the CAM-parator to select your camera combination among a larger number of options.

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 6D»	5.7 in	4.4 in	2.8 in	27.2 oz	1090	Y	Sep 2012	2,099	-		Canon 6D
	Canon SL1«	4.6 in	3.6 in	2.7 in	14.4 oz	380	n	Mar 2013	549	-		Canon SL1
	Canon 6D Mark II« »	5.7 in	4.4 in	3.0 in	27.0 oz	1200	Y	Jun 2017	1,999			Canon 6D Mark II
	Canon SL2« »	4.8 in	3.7 in	2.8 in	16.0 oz	650	n	Jun 2017	549	-		Canon SL2
	Canon 1D X Mark II« »	6.2 in	6.6 in	3.3 in	54.0 oz	1210	Y	Feb 2016	5,999			Canon 1D X Mark II
	Canon T6« »	5.1 in	4.0 in	3.1 in	17.1 oz	500	n	Mar 2016	449	-		Canon T6
	Canon 5DS« »	6.0 in	4.6 in	3.0 in	32.8 oz	700	Y	Feb 2015	3,699			Canon 5DS
	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 70D« »	5.5 in	4.1 in	3.1 in	26.6 oz	920	Y	Jul 2013	1,199	-		Canon 70D
	Canon T5i« »	5.2 in	3.9 in	3.1 in	20.5 oz	440	n	Mar 2013	649	-		Canon T5i
	Canon 5D Mark III« »	6.0 in	4.6 in	3.0 in	33.5 oz	950	Y	Mar 2012	3,499	-		Canon 5D Mark III
	Canon 1D X« »	6.2 in	6.6 in	3.3 in	54.7 oz	1120	Y	Oct 2011	6,799	-		Canon 1D X
	Canon 5D Mark II« »	6.0 in	4.5 in	3.0 in	30.0 oz	850	Y	Sep 2008	3,499	-		Canon 5D Mark II
	Nikon D610« »	5.6 in	4.4 in	3.2 in	30.0 oz	900	Y	Oct 2013	1,999			Nikon D610
	Nikon D600« »	5.6 in	4.4 in	3.2 in	30.0 oz	900	Y	Sep 2012	2,099	-		Nikon D600
Convert to Metric
Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.

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 SL1 was launched at a markedly lower price (by 74 percent) than the 6D, which puts it into a different 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: Canon 6D vs SL1

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. 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 6D features a full frame sensor and the Canon SL1 an APS-C sensor. The sensor area in the SL1 is 62 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 1.6. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

In terms of chip-set technology, the 6D 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 6D offers a higher resolution than the SL1 (17.9MP), but the 6D nevertheless has larger individual pixels (pixel pitch of 6.57μm versus 4.31μm for the SL1) due to its larger sensor. However, the SL1 is a somewhat more recent model (by 6 months) than the 6D, 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 6D implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 6D 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 SL1 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Canon EOS 6D has a native sensitivity range from ISO 100 to ISO 25600, which can be extended to ISO 50-102400. The corresponding ISO settings for the Canon EOS Rebel SL1 are ISO 100 to ISO 12800, with the possibility to increase the ISO range to 100-25600.

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 review, the 6D provides substantially higher image quality than the SL1, with an overall score that is 19 points higher. This advantage is based on 2 bits higher color depth, 0.8 EV in additional dynamic range, and 1.5 stops in additional low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

Many modern cameras are not only capable of taking still images, but can also record movies. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, and both provide the same movie specifications (1080/30p).

Feature comparison: Canon 6D vs SL1

Apart from body and sensor, cameras can and do differ across a range of features. The 6D 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 6D offers a wider field of view (97%) 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 6D has a higher magnification (0.71x vs 0.54x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The adjacent table lists some of the other core features of the Canon 6D and Canon SL1 along with similar information for a selection of comparators.

One feature that is present on the 6D, 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 6D 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 6D 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 6D 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 6D 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 6D and the SL1 have been discontinued, but can regularly be found used on eBay. The 6D was replaced by the Canon 6D Mark II, while the SL1 was followed by the Canon SL2. 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 6D vs SL1

So how do things add up? Which of the two cameras – the Canon 6D or the Canon SL1 – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.

Arguments in favor of the Canon EOS 6D:

• More detail: Offers more megapixels (20 vs 17.9MP) with a 6% higher linear resolution.
• Better image quality: Scores substantially higher (19 points) in the DXO overall assessment.
• Richer colors: Generates images with noticeably better colors (2 bits more color depth).
• More dynamic range: Captures a larger spectrum of light and dark details (0.8 EV of extra DR).
• Better low-light sensitivity: Requires less light for good images (1.5 stops ISO advantage).
• 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 (97% vs 95%).
• Larger viewfinder image: Features a viewfinder with a higher magnification (0.71x vs 0.54x).
• Easier setting verification: Features an LCD display on top to control shooting parameters.
• Longer lasting: Can take more shots (1090 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 heavily discounted: Has been on the market for longer (launched in September 2012).

Advantages of the Canon EOS Rebel SL1:

• Better live-view autofocus: Features on-sensor phase-detection for quicker and more confident autofocus.
• Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
• More compact: Is smaller (117x91mm vs 145x111mm) and will fit more readily into a bag.
• Less heavy: Has a lower weight (by 363g or 47 percent) and is thus easier to take along.
• Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
• More affordable: Was introduced into a lower priced category (74 percent cheaper at launch).
• More modern: Was introduced somewhat (6 months) more recently.

If the number of relative strengths (bullet points above) is taken as a guide, the 6D is the clear winner of the match-up (13 : 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 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 6D 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 comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the 6D or the SL1. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.

Expert reviews: Canon 6D vs SL1

This is why expert reviews are important. The adjacent summary-table relays the overall verdicts of several of the most popular 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 6D»	+ +	83/100	4.5/5	4.5/5	4.5/5	Sep 2012	2,099	-		Canon 6D
	Canon SL1«	+	78/100	4/5	4/5	4/5	Mar 2013	549	-		Canon SL1
	Canon 6D Mark II« »	+	80/100	4.5/5	4/5	4/5	Jun 2017	1,999			Canon 6D Mark II
	Canon SL2« »	+ +	78/100	4.5/5	4.5/5	4.5/5	Jun 2017	549	-		Canon SL2
	Canon 1D X Mark II« »	-	89/100	4.5/5	5/5	4.5/5	Feb 2016	5,999			Canon 1D X Mark II
	Canon T6« »	o	73/100	4/5	3.5/5	4/5	Mar 2016	449	-		Canon T6
	Canon 5DS« »	+	83/100	4.5/5	5/5	4.5/5	Feb 2015	3,699			Canon 5DS
	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 70D« »	+ +	83/100	4.5/5	4.5/5	5/5	Jul 2013	1,199	-		Canon 70D
	Canon T5i« »	-	76/100	4.5/5	4.5/5	4.5/5	Mar 2013	649	-		Canon T5i
	Canon 5D Mark III« »	+ +	82/100	4.5/5	5/5	4.5/5	Mar 2012	3,499	-		Canon 5D Mark III
	Canon 1D X« »	-	-	4.5/5	4.5/5	4.5/5	Oct 2011	6,799	-		Canon 1D X
	Canon 5D Mark II« »	91/100	79/100	4/5	5/5	-	Sep 2008	3,499	-		Canon 5D Mark II
	Nikon D610« »	+ +	87/100	4.5/5	4.5/5	4.5/5	Oct 2013	1,999			Nikon D610
	Nikon D600« »	+ +	87/100	5/5	4.5/5	4.5/5	Sep 2012	2,099	-		Nikon D600
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (-) not available.

Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. 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, please note that some of the review sites have changed their methodology and reporting over time.

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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

Specifications: Canon 6D 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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