Canon SL1 vs Nikon L840

The Canon EOS Rebel SL1 (called Canon 100D in some regions) and the Nikon Coolpix L840 are two digital cameras that were officially introduced, respectively, in March 2013 and February 2015. The SL1 is a DSLR, while the L840 is a fixed lens compact. The cameras are based on an APS-C (SL1) and a 1/2.3-inch (L840) sensor. The Canon has a resolution of 17.9 megapixels, whereas the Nikon provides 15.9 MP.

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

Headline Specifications

Canon SL1		Nikon L840
Digital single lens reflex		Fixed lens compact camera
Canon EF mount lenses		22.5-855mm f/3.0-6.5
17.9 MP – APS-C sensor		15.9 MP – 1/2.3" sensor
1080/30p Video		1080/60i Video
ISO 100-12,800 (100 - 25,600)		ISO 100-6,400
Optical viewfinder		No viewfinder, LCD framing
3.0" LCD – 1040k dots		3.0" LCD – 921k dots
Fixed touchscreen		Tilting screen (no touchscreen)
4.9 shutter flaps per second		7.4 shutter flaps per second
380 shots per battery charge		590 shots per battery charge
117 x 91 x 69 mm, 407 g		113 x 78 x 96 mm, 538 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS Rebel SL1 and the Nikon Coolpix L840? 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 SL1 and the Nikon L840 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 size dimensions are rounded to the nearest millimeter.

The SL1 can be obtained in two different colors (black, white), while the L840 is also available in two color-versions, but different ones (black, red).

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Nikon L840 is notably smaller (17 percent) than the Canon SL1. In this context, it is worth noting that neither the SL1 nor the L840 are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the L840 has a lens built in, whereas the SL1 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 SL1 and their specifications 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 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 (USD)	Street Price
1.		Canon SL1	117 mm	91 mm	69 mm	407 g	380	n	Mar 2013	549	ebay.com
2.		Nikon L840	113 mm	78 mm	96 mm	538 g	590	n	Feb 2015	299	ebay.com
3.		Canon T100	129 mm	102 mm	77 mm	436 g	500	n	Feb 2018	399	amazon.com
4.		Canon SL2	122 mm	93 mm	70 mm	453 g	650	n	Jun 2017	549	ebay.com
5.		Canon T6	129 mm	101 mm	78 mm	485 g	500	n	Mar 2016	449	ebay.com
6.		Canon M10	108 mm	67 mm	35 mm	301 g	255	n	Oct 2015	499	ebay.com
7.		Canon SX60	128 mm	93 mm	114 mm	650 g	340	n	Sep 2014	549	ebay.com
8.		Canon T5	130 mm	100 mm	78 mm	480 g	500	n	Feb 2014	449	ebay.com
9.		Canon G16	109 mm	76 mm	40 mm	356 g	360	n	Aug 2013	549	ebay.com
10.		Canon T5i	133 mm	100 mm	79 mm	580 g	440	n	Mar 2013	649	ebay.com
11.		Canon M	109 mm	66 mm	32 mm	298 g	230	n	Jul 2012	599	ebay.com
12.		Canon T4i	133 mm	100 mm	79 mm	575 g	440	n	Jun 2012	849	ebay.com
13.		Canon T3i	133 mm	100 mm	80 mm	570 g	440	n	Feb 2011	599	ebay.com
14.		Leica X Typ 113	133 mm	73 mm	78 mm	486 g	350	n	Sep 2014	2,295	ebay.com
15.		Nikon B600	122 mm	82 mm	99 mm	500 g	280	n	Jan 2019	349	ebay.com
16.		Nikon B500	114 mm	78 mm	95 mm	541 g	600	n	Jan 2016	299	ebay.com
17.		Nikon P900	140 mm	103 mm	137 mm	899 g	360	n	Mar 2015	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 obviously take relative prices into account. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The L840 was launched at a lower price than the SL1, 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 imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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. 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 SL1 features an APS-C sensor and the Nikon L840 a 1/2.3-inch sensor. The sensor area in the L840 is 92 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 5.6. The sensor in the SL1 has a native 3:2 aspect ratio, while the one in the L840 offers a 4:3 aspect.

With 17.9MP, the SL1 offers a higher resolution than the L840 (15.9MP), but the SL1 nevertheless has larger individual pixels (pixel pitch of 4.31μm versus 1.33μm for the L840) due to its larger sensor. However, the L840 is a somewhat more recent model (by 1 year and 10 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. Coming back to sensor resolution, it should be mentioned that the L840 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Canon SL1 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the SL1 for good quality output (200 dots per inch) amounts to 25.9 x 17.3 inches or 65.8 x 43.9 cm, for very good quality (250 dpi) 20.7 x 13.8 inches or 52.7 x 35.1 cm, and for excellent quality (300 dpi) 17.3 x 11.5 inches or 43.9 x 29.3 cm. The corresponding values for the Nikon L840 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 SL1 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Canon EOS Rebel SL1 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 Nikon Coolpix L840 are ISO 100 to ISO 6400 (no boost).

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.

Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). 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 SL1	APS-C	17.9	5184	3456	1080/30p	21.8	11.3	843	63
2.		Nikon L840	1/2.3	15.9	4608	3456	1080/60i	20.2	11.6	721	47
3.		Canon T100	APS-C	17.9	5184	3456	1080/30p	21.9	11.4	695	63
4.		Canon SL2	APS-C	24.0	6000	4000	1080/60p	23.6	13.4	1041	79
5.		Canon T6	APS-C	17.9	5184	3456	1080/30p	22.0	11.7	781	66
6.		Canon M10	APS-C	17.9	5184	3456	1080/30p	22.2	11.4	753	65
7.		Canon SX60	1/2.3	14.2	4608	3072	1080/60p	19.2	10.8	127	39
8.		Canon T5	APS-C	17.9	5184	3456	1080/30p	21.9	11.3	724	63
9.		Canon G16	1/1.7	12.0	4000	3000	1080/60p	21.0	11.7	230	54
10.		Canon T5i	APS-C	17.9	5184	3456	1080/30p	21.7	11.2	681	61
11.		Canon M	APS-C	17.9	5184	3456	1080/30p	22.1	11.2	827	65
12.		Canon T4i	APS-C	17.9	5184	3456	1080/30p	21.7	11.2	722	62
13.		Canon T3i	APS-C	17.9	5184	3456	1080/30p	22.1	11.5	793	65
14.		Leica X Typ 113	APS-C	16.1	4928	3264	1080/30p	23.6	12.8	1491	78
15.		Nikon B600	1/2.3	15.9	4608	3456	1080/30p	20.7	12.2	1095	52
16.		Nikon B500	1/2.3	15.9	4608	3456	1080/60i	20.3	11.7	810	48
17.		Nikon P900	1/2.3	15.9	4608	3456	1080/60p	20.2	11.6	727	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 can also record movies. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the L840 provides a faster frame rate than the SL1. It can shoot movie footage at 1080/60i, while the Canon is limited to 1080/30p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the SL1 has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the L840 relies on live view and the rear LCD for framing. The table below summarizes some of the other core capabilities of the Canon SL1 and Nikon L840 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 SL1	optical	n	3.0 / 1040	fixed	Y	1/4000s	4.9/s	Y	n
2.		Nikon L840	none	n	3.0 / 921	tilting	n	1/4000s	7.4/s	Y	Y
3.		Canon T100	optical	n	2.7 / 230	fixed	n	1/4000s	3.0/s	Y	n
4.		Canon SL2	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
5.		Canon T6	optical	n	3.0 / 920	fixed	n	1/4000s	3.0/s	Y	n
6.		Canon M10	none	n	3.0 / 1040	tilting	Y	1/4000s	4.6/s	Y	n
7.		Canon SX60	922	n	3.0 / 922	swivel	n	1/2000s	6.4/s	Y	Y
8.		Canon T5	optical	n	3.0 / 460	fixed	n	1/4000s	3.0/s	Y	n
9.		Canon G16	optical	n	3.0 / 922	fixed	n	1/4000s	2.2/s	Y	Y
10.		Canon T5i	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
11.		Canon M	none	n	3.0 / 1040	fixed	Y	1/4000s	4.3/s	n	n
12.		Canon T4i	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
13.		Canon T3i	optical	n	3.0 / 1040	swivel	n	1/4000s	3.7/s	Y	n
14.		Leica X Typ 113	optional	n	3.0 / 920	fixed	n	1/2000s	5.0/s	Y	n
15.		Nikon B600	none	n	3.0 / 921	fixed	n	1/4000s	7.4/s	Y	Y
16.		Nikon B500	none	n	3.0 / 921	tilting	n	1/4000s	7.4/s	Y	Y
17.		Nikon P900	921	n	3.0 / 921	swivel	n	1/4000s	7.0/s	Y	Y
Notes: *) 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 SL1 has a touchscreen, while the L840 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 SL1 and the L840 write their files to SDXC cards. The SL1 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the L840 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 EOS Rebel SL1 and Nikon Coolpix L840 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 SL1	Y	mono / mono	Y	-	mini	2.0	-	-	-
2.		Nikon L840	-	stereo / mono	-	-	micro	2.0	Y	Y	-
3.		Canon T100	Y	mono / mono	-	-	mini	2.0	Y	Y	-
4.		Canon SL2	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
5.		Canon T6	Y	mono / mono	-	-	mini	2.0	Y	Y	-
6.		Canon M10	-	stereo / mono	-	-	mini	2.0	Y	Y	-
7.		Canon SX60	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
8.		Canon T5	Y	mono / mono	-	-	mini	2.0	-	-	-
9.		Canon G16	Y	stereo / mono	-	-	mini	2.0	Y	-	-
10.		Canon T5i	Y	stereo / mono	Y	-	mini	2.0	-	-	-
11.		Canon M	Y	stereo / mono	Y	-	mini	2.0	-	-	-
12.		Canon T4i	Y	stereo / mono	Y	-	mini	2.0	-	-	-
13.		Canon T3i	Y	mono / mono	Y	-	mini	2.0	-	-	-
14.		Leica X Typ 113	Y	stereo / mono	-	-	mini	2.0	-	-	-
15.		Nikon B600	-	stereo / mono	-	-	micro	2.0	Y	-	Y
16.		Nikon B500	-	stereo / mono	-	-	micro	2.0	Y	Y	Y
17.		Nikon P900	-	stereo / mono	-	-	micro	2.0	Y	Y	-

It is notable that the SL1 has a hotshoe, while the L840 does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.

Both the SL1 and the L840 have been discontinued, but can regularly be found used on ebay. The SL1 was replaced by the Canon SL2, while the L840 was followed by the Nikon B500. Further information on the features and operation of the SL1 and L840 can be found, respectively, in the Canon SL1 Manual (free pdf) or the online Nikon L840 Manual.

Review summary

So how do things add up? Is the Canon SL1 better than the Nikon L840 or vice versa? Below is a summary of the relative strengths of each of the two contestants.

Reasons to prefer the Canon EOS Rebel SL1:

• More detail: Offers more megapixels (17.9 vs 15.9MP) with a 8% higher linear resolution.
• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• Better image quality: Features bigger pixels on a larger sensor for higher quality imaging.
• Richer colors: The pixel size advantage translates into images with better, more accurate colors.
• More dynamic range: Larger pixels capture a wider spectrum of light and dark details.
• Better low-light sensitivity: Larger pixels means good image quality even under poor lighting.
• 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 921k dots).
• Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
• More flexible: Can take a variety of interchangeable lenses, including specialty optics.
• Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
• Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
• More heavily discounted: Has been on the market for longer (launched in March 2013).

Advantages of the Nikon Coolpix L840:

• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• Better video: Provides higher movie framerates (1080/60i versus 1080/30p).
• More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
• Faster burst: Shoots at higher frequency (7.4 vs 4.9 flaps/sec) to capture the decisive moment.
• Ready to shoot: Comes with an integrated lens, while the SL1 requires a separate lens.
• More compact: Is smaller (113x78mm vs 117x91mm) and will fit more readily into a bag.
• Longer lasting: Gets more shots (590 versus 380) out of a single battery charge.
• Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
• 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.
• More affordable: Was introduced at a lower price, despite coming with a built-in lens.
• More modern: Was introduced somewhat (1 year and 10 months) more recently.

If the count of individual advantages (bullet points above) is taken as a guide, the SL1 emerges as the winner of the contest (15 : 12 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. A professional sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape 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 SL1 and the Nikon L840 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Superzoom 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 incomplete and does no justice, for example, to the way the SL1 or the L840 perform in practice. 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 expert reviews 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 (USD)	Street Price
1.		Canon SL1	4/5	+	..	78/100	4/5	4/5	Mar 2013	549	ebay.com
2.		Nikon L840	..	+ +	..	..	3.5/5	4/5	Feb 2015	299	ebay.com
3.		Canon T100	..	o	3/5	..	3.5/5	3.5/5	Feb 2018	399	amazon.com
4.		Canon SL2	4/5	+ +	4/5	78/100	4.5/5	4.5/5	Jun 2017	549	ebay.com
5.		Canon T6	4/5	o	4/5	73/100	4/5	4/5	Mar 2016	449	ebay.com
6.		Canon M10	..	..	..	..	..	4/5	Oct 2015	499	ebay.com
7.		Canon SX60	3/5	+ +	..	75/100	4/5	4.5/5	Sep 2014	549	ebay.com
8.		Canon T5	3/5	+	..	..	4/5	4.5/5	Feb 2014	449	ebay.com
9.		Canon G16	4/5	+	..	..	4.5/5	4.5/5	Aug 2013	549	ebay.com
10.		Canon T5i	..	..	..	76/100	4.5/5	4.5/5	Mar 2013	649	ebay.com
11.		Canon M	3/5	+	..	..	4/5	4/5	Jul 2012	599	ebay.com
12.		Canon T4i	4/5	+ +	..	77/100	4.5/5	4.5/5	Jun 2012	849	ebay.com
13.		Canon T3i	3/5	o	..	77/100	4.5/5	4.5/5	Feb 2011	599	ebay.com
14.		Leica X Typ 113	3.5/5	..	..	..	3.5/5	4/5	Sep 2014	2,295	ebay.com
15.		Nikon B600	..	+	..	..	3.5/5	3/5	Jan 2019	349	ebay.com
16.		Nikon B500	..	+	..	..	4/5	3.5/5	Jan 2016	299	ebay.com
17.		Nikon P900	..	..	..	77/100	4/5	4/5	Mar 2015	599	ebay.com
Notes: (+ +) 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. 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, please note that some of the review sites have changed their methodology and reporting over time.

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Other camera comparisons

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