Canon 600D vs Nikon D40

The Canon EOS 600D (called Canon T3i in some regions) and the Nikon D40 are two digital cameras that were officially introduced, respectively, in February 2011 and November 2006. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The Canon has a resolution of 17.9 megapixels, whereas the Nikon provides 6 MP.

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

Headline Specifications

Canon 600D		Nikon D40
Digital single lens reflex		Digital single lens reflex
Canon EF mount lenses		Nikon F mount lenses
17.9 MP – APS-C sensor		6 MP – APS-C sensor
1080/30p Video		no Video
ISO 100-6,400 (100 - 12,800)		ISO 200-1,600 (200 - 3,200)
Optical viewfinder		Optical viewfinder
3.0" LCD – 1040k dots		2.5" LCD – 230k dots
Swivel screen (not touch-sensitive)		Fixed screen (not touch-sensitive)
3.7 shutter flaps per second		2.5 shutter flaps per second
440 shots per battery charge		470 shots per battery charge
133 x 100 x 80 mm, 570 g		124 x 94 x 64 mm, 522 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 600D and the Nikon D40? 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 600D and the Nikon D40 are illustrated in the side-by-side display below. 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 Nikon D40 is notably smaller (12 percent) than the Canon 600D. Moreover, the D40 is markedly lighter (8 percent) than the 600D. In this context, it is worth noting that neither the 600D nor the D40 are weather-sealed.

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. Yet, since both cameras are based around an APS-C sensor, their respective lenses will tend to have similar dimensions and heft. You can compare the optics available for the two cameras in the Canon EF Lens Catalog (600D) and the Nikon Lens Catalog (D40).

Concerning battery life, the 600D gets 440 shots out of its Canon LP-E8 battery, while the D40 can take 470 images on a single charge of its Nikon EN-EL9 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, you can navigate to the CAM-parator app and make your selection from a broad list of cameras 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 600D	133 mm	100 mm	80 mm	570 g	440	n	Feb 2011	US$ 599	ebay.com
2.		Nikon D40	124 mm	94 mm	64 mm	522 g	470	n	Nov 2006	US$ 499	ebay.com
3.		Canon 100D	117 mm	91 mm	69 mm	407 g	380	n	Mar 2013	US$ 549	ebay.com
4.		Canon 500D	129 mm	98 mm	62 mm	520 g	400	n	Mar 2009	US$ 799	ebay.com
5.		Canon 550D	129 mm	98 mm	62 mm	530 g	440	n	Feb 2010	US$ 699	ebay.com
6.		Canon 650D	133 mm	100 mm	79 mm	575 g	440	n	Jun 2012	US$ 849	ebay.com
7.		Canon 700D	133 mm	100 mm	79 mm	580 g	440	n	Mar 2013	US$ 649	ebay.com
8.		Canon 760D	132 mm	101 mm	78 mm	565 g	440	n	Feb 2015	US$ 649	ebay.com
9.		Canon 1100D	130 mm	100 mm	78 mm	495 g	700	n	Feb 2011	US$ 449	ebay.com
10.		Canon 1200D	130 mm	100 mm	78 mm	480 g	500	n	Feb 2014	US$ 449	ebay.com
11.		Canon 1300D	129 mm	101 mm	78 mm	485 g	500	n	Mar 2016	US$ 449	ebay.com
12.		Canon M	109 mm	66 mm	32 mm	298 g	230	n	Jul 2012	US$ 599	ebay.com
13.		Nikon D40X	124 mm	94 mm	64 mm	522 g	520	n	Mar 2007	US$ 729	ebay.com
14.		Nikon D50	133 mm	102 mm	76 mm	620 g	400	n	Apr 2005	US$ 749	ebay.com
15.		Nikon D70s	140 mm	111 mm	78 mm	679 g	500	n	Apr 2005	US$ 899	ebay.com
16.		Nikon D3000	126 mm	97 mm	64 mm	536 g	500	n	Jul 2009	US$ 599	ebay.com
17.		Nikon D3100	124 mm	96 mm	75 mm	505 g	550	n	Aug 2010	US$ 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 D40 was launched at a somewhat lower price (by 17 percent) than the 600D, which makes it more attractive for photographers on a tight budget. 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 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. 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 D40 is 11 percent bigger. As a result of these sensor size differences, the cameras have format factors, respectively, of 1.6 (600D) and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Despite having a smaller sensor, the Canon 600D offers a higher resolution of 17.9 megapixels, compared with 6 MP of the Nikon D40. 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 4.31μm versus 7.85μm for the D40). However, it should be noted that the 600D is much more recent (by 4 years and 2 months) than the D40, 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 600D implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 600D 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 D40 are 15 x 10 inches or 38.2 x 25.4 cm for good quality, 12 x 8 inches or 30.6 x 20.3 cm for very good quality, and 10 x 6.7 inches or 25.5 x 16.9 cm for excellent quality prints.

The Canon EOS 600D has a native sensitivity range from ISO 100 to ISO 6400, which can be extended to ISO 100-12800. The corresponding ISO settings for the Nikon D40 are ISO 200 to ISO 1600, with the possibility to increase the ISO range to 200-3200.

In terms of underlying technology, the 600D is build around a CMOS sensor, while the D40 uses a CCD 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.

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 600D has a notably higher overall DXO score than the D40 (overall score 9 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 1.1 bits higher color depth, 0.5 EV in additional dynamic range, and 0.5 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.

Sensor Characteristics

		Camera Model	Sensor Class	Resolution (MP)	Horiz. Pixels	Vert. Pixels	Video Format	DXO Portrait	DXO Landscape	DXO Sports	DXO Overall
1.		Canon 600D	APS-C	17.9	5184	3456	1080/30p	22.1	11.5	793	65
2.		Nikon D40	APS-C	6.0	3008	2000	none	21.0	11.0	561	56
3.		Canon 100D	APS-C	17.9	5184	3456	1080/30p	21.8	11.3	843	63
4.		Canon 500D	APS-C	15.1	4752	3168	1080/20p	21.7	11.5	663	63
5.		Canon 550D	APS-C	17.9	5184	3456	1080/30p	22.1	11.5	784	66
6.		Canon 650D	APS-C	17.9	5184	3456	1080/30p	21.7	11.2	722	62
7.		Canon 700D	APS-C	17.9	5184	3456	1080/30p	21.7	11.2	681	61
8.		Canon 760D	APS-C	24.0	6000	4000	1080/30p	22.6	12.0	915	70
9.		Canon 1100D	APS-C	12.2	4272	2848	720/30p	21.9	11.0	755	62
10.		Canon 1200D	APS-C	17.9	5184	3456	1080/30p	21.9	11.3	724	63
11.		Canon 1300D	APS-C	17.9	5184	3456	1080/30p	22.0	11.7	781	66
12.		Canon M	APS-C	17.9	5184	3456	1080/30p	22.1	11.2	827	65
13.		Nikon D40X	APS-C	10.0	3872	2592	none	22.4	11.4	516	63
14.		Nikon D50	APS-C	6.0	3008	2000	none	20.9	10.8	560	55
15.		Nikon D70s	APS-C	6.0	3008	2000	none	20.4	10.3	529	50
16.		Nikon D3000	APS-C	10.0	3872	2592	none	22.3	11.1	563	62
17.		Nikon D3100	APS-C	14.2	4608	3072	1080/24p	22.5	11.3	919	67

Many modern cameras cannot only take still pictures, but also record videos. The 600D indeed provides movie recording capabilities, while the D40 does not. The highest resolution format that the 600D can use is 1080/30p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. The 600D and the D40 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 viewfinders of both cameras offer the same field of view (95%), as well as the same magnification (0.53x). The adjacent table lists some of the other core features of the Canon 600D and Nikon D40 along with similar information for a selection of comparators.

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 600D	optical	n	3.0 / 1040	swivel	n	1/4000s	3.7/s	Y	n
2.		Nikon D40	optical	n	2.5 / 230	fixed	n	1/4000s	2.5/s	Y	n
3.		Canon 100D	optical	n	3.0 / 1040	fixed	Y	1/4000s	4.9/s	Y	n
4.		Canon 500D	optical	n	3.0 / 920	fixed	n	1/4000s	3.4/s	Y	n
5.		Canon 550D	optical	n	3.0 / 1040	fixed	n	1/4000s	3.7/s	Y	n
6.		Canon 650D	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
7.		Canon 700D	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
8.		Canon 760D	optical	Y	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
9.		Canon 1100D	optical	n	2.7 / 230	fixed	n	1/4000s	3.0/s	Y	n
10.		Canon 1200D	optical	n	3.0 / 460	fixed	n	1/4000s	3.0/s	Y	n
11.		Canon 1300D	optical	n	3.0 / 920	fixed	n	1/4000s	3.0/s	Y	n
12.		Canon M	none	n	3.0 / 1040	fixed	Y	1/4000s	4.3/s	n	n
13.		Nikon D40X	optical	n	2.5 / 230	fixed	n	1/4000s	3.0/s	Y	n
14.		Nikon D50	optical	n	2.0 / 130	fixed	n	1/4000s	2.5/s	Y	n
15.		Nikon D70s	optical	n	2.0 / 130	fixed	n	1/8000s	3.0/s	Y	n
16.		Nikon D3000	optical	n	3.0 / 230	fixed	n	1/4000s	3.0/s	Y	n
17.		Nikon D3100	optical	n	3.0 / 230	fixed	n	1/4000s	3.0/s	Y	n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

The 600D writes its imaging data to SDXC cards, while the D40 uses SDHC 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 600D and Nikon D40 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 600D	Y	mono / mono	Y	-	mini	2.0	-	-	-
2.		Nikon D40	Y	- / -	-	-	-	2.0	-	-	-
3.		Canon 100D	Y	mono / mono	Y	-	mini	2.0	-	-	-
4.		Canon 500D	Y	mono / mono	-	-	mini	2.0	-	-	-
5.		Canon 550D	Y	stereo / -	Y	-	mini	2.0	-	-	-
6.		Canon 650D	Y	stereo / mono	Y	-	mini	2.0	-	-	-
7.		Canon 700D	Y	stereo / mono	Y	-	mini	2.0	-	-	-
8.		Canon 760D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	-
9.		Canon 1100D	Y	stereo / mono	-	-	mini	2.0	-	-	-
10.		Canon 1200D	Y	mono / mono	-	-	mini	2.0	-	-	-
11.		Canon 1300D	Y	mono / mono	-	-	mini	2.0	Y	Y	-
12.		Canon M	Y	stereo / mono	Y	-	mini	2.0	-	-	-
13.		Nikon D40X	Y	- / -	-	-	-	2.0	-	-	-
14.		Nikon D50	Y	- / -	-	-	-	2.0	-	-	-
15.		Nikon D70s	Y	- / -	-	-	-	2.0	-	-	-
16.		Nikon D3000	Y	- / -	-	-	-	2.0	-	-	-
17.		Nikon D3100	Y	mono / mono	-	-	mini	2.0	-	-	-

Both the 600D and the D40 have been discontinued, but can regularly be found used on ebay. The D40 was replaced by the Nikon D40X, while the 600D was followed by the Canon 650D. Further information on the features and operation of the 600D and D40 can be found, respectively, in the Canon 600D Manual (free pdf) or the online Nikon D40 Manual.

Review summary

So how do things add up? Which of the two cameras – the Canon 600D or the Nikon D40 – 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 600D:

• More detail: Offers more megapixels (17.9 vs 6MP) with a 72% higher linear resolution.
• Better image quality: Scores markedly higher (9 points) in the DXO overall assessment.
• Richer colors: Generates images with noticeably better colors (1.1 bits more color depth).
• Better low-light sensitivity: Requires less light for good images (0.5 stops ISO advantage).
• Broader imaging potential: Can record not only still images but also 1080/30p movies.
• Larger screen: Has a bigger rear LCD (3.0" vs 2.5") for image review 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.
• More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
• Faster burst: Shoots at higher frequency (3.7 vs 2.5 flaps/sec) to capture the decisive moment.
• More modern: Reflects 4 years and 2 months of technical progress since the D40 launch.

Advantages of the Nikon D40:

• More compact: Is smaller (124x94mm vs 133x100mm) and will fit more readily into a bag.
• More affordable: Was released into a lower priced segment (17 percent cheaper at launch).
• More heavily discounted: Has been around for much longer (launched in November 2006).

If the number of relative strengths (bullet points above) is taken as a guide, the 600D is the clear winner of the match-up (11 : 3 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 600D and the Nikon D40 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 remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the 600D or the D40. 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

This is why expert reviews are important. The adjacent summary-table relays the overall verdicts of several of the most popular 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 600D	3/5	o	..	77/100	4.5/5	4.5/5	Feb 2011	US$ 599	ebay.com
2.		Nikon D40	..	81/100	..	+ +	o	4.5/5	Nov 2006	US$ 499	ebay.com
3.		Canon 100D	4/5	+	..	78/100	4/5	4/5	Mar 2013	US$ 549	ebay.com
4.		Canon 500D	..	+ +	..	74/100	4.5/5	4.5/5	Mar 2009	US$ 799	ebay.com
5.		Canon 550D	..	+ +	..	77/100	4/5	4.5/5	Feb 2010	US$ 699	ebay.com
6.		Canon 650D	4/5	+ +	..	77/100	4.5/5	4.5/5	Jun 2012	US$ 849	ebay.com
7.		Canon 700D	..	..	..	76/100	4.5/5	4.5/5	Mar 2013	US$ 649	ebay.com
8.		Canon 760D	5/5	+	..	77/100	4.5/5	4.5/5	Feb 2015	US$ 649	ebay.com
9.		Canon 1100D	..	80/100	..	69/100	4/5	4.5/5	Feb 2011	US$ 449	ebay.com
10.		Canon 1200D	3/5	+	..	..	4/5	4.5/5	Feb 2014	US$ 449	ebay.com
11.		Canon 1300D	4/5	o	4/5	73/100	4/5	4/5	Mar 2016	US$ 449	ebay.com
12.		Canon M	3/5	+	..	..	4/5	4/5	Jul 2012	US$ 599	ebay.com
13.		Nikon D40X	..	79/100	..	+ +	4/5	4/5	Mar 2007	US$ 729	ebay.com
14.		Nikon D50	..	78/100	..	+ +	4/5	4.5/5	Apr 2005	US$ 749	ebay.com
15.		Nikon D70s	..	..	..	..	..	5/5	Apr 2005	US$ 899	ebay.com
16.		Nikon D3000	..	+	..	72/100	4/5	4.5/5	Jul 2009	US$ 599	ebay.com
17.		Nikon D3100	5/5	+ +	..	72/100	4.5/5	4.5/5	Aug 2010	US$ 599	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 comparisons of ratings among very different cameras or across long time periods have little meaning. 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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