Canon D30 vs Nikon D40

The Canon EOS-D30 and the Nikon D40 are two digital cameras that were announced, respectively, in May 2000 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 3.1 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 D30		Nikon D40
Digital single lens reflex		Digital single lens reflex
Canon EF mount lenses		Nikon F mount lenses
3.1 MP – APS-C sensor		6 MP – APS-C sensor
no Video		no Video
ISO 100-1,600		ISO 200-1,600 (200 - 3,200)
Optical viewfinder		Optical viewfinder
1.8" LCD – 114k dots		2.5" LCD – 230k dots
Fixed screen (not touch-sensitive)		Fixed screen (not touch-sensitive)
3 shutter flaps per second		2.5 shutter flaps per second
540 shots per battery charge		470 shots per battery charge
150 x 107 x 75 mm, 750 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-D30 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 side-by-side display below illustrates the physical size and weight of the Canon D30 and the Nikon D40. 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.

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 (27 percent) than the Canon D30. Moreover, the D40 is markedly lighter (30 percent) than the D30. In this context, it is worth noting that neither the D30 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 (D30) and the Nikon Lens Catalog (D40).

Concerning battery life, the D30 gets 540 shots out of its Canon BP-511 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. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.

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 D30	150 mm	107 mm	75 mm	750 g	540	n	May 2000	2,999	ebay.com
2.		Nikon D40	124 mm	94 mm	64 mm	522 g	470	n	Nov 2006	499	ebay.com
3.		Canon 10D	150 mm	107 mm	75 mm	850 g	500	n	Feb 2003	1,999	ebay.com
4.		Canon 20D	144 mm	106 mm	72 mm	770 g	700	n	Aug 2004	1,499	ebay.com
5.		Canon 30D	144 mm	106 mm	74 mm	785 g	750	n	Feb 2006	1,399	ebay.com
6.		Canon 40D	146 mm	108 mm	74 mm	822 g	750	n	Aug 2007	1,299	ebay.com
7.		Canon 80D	139 mm	105 mm	79 mm	730 g	960	Y	Feb 2016	1,199	ebay.com
8.		Canon D60	150 mm	107 mm	75 mm	855 g	620	n	Feb 2002	2,999	ebay.com
9.		Canon SL2	122 mm	93 mm	70 mm	453 g	650	n	Jun 2017	549	ebay.com
10.		Canon Rebel	142 mm	99 mm	72 mm	649 g	400	n	Aug 2003	899	ebay.com
11.		Canon T7	129 mm	101 mm	78 mm	475 g	500	n	Feb 2018	449	amazon.com
12.		Canon T7i	131 mm	100 mm	76 mm	532 g	600	n	Feb 2017	749	ebay.com
13.		Nikon D40X	124 mm	94 mm	64 mm	522 g	520	n	Mar 2007	729	ebay.com
14.		Nikon D50	133 mm	102 mm	76 mm	620 g	400	n	Apr 2005	749	ebay.com
15.		Nikon D3100	124 mm	96 mm	75 mm	505 g	550	n	Aug 2010	599	ebay.com
16.		Nikon D3300	124 mm	98 mm	76 mm	430 g	700	n	Jan 2014	499	ebay.com
17.		Nikon D3400	124 mm	98 mm	76 mm	445 g	1200	n	Aug 2016	499	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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The D40 was launched at a markedly lower price (by 83 percent) than the D30, 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 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 13 percent bigger. As a result of these sensor size differences, the cameras have format factors, respectively, of 1.6 (D30) and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

With 6MP, the D40 offers a higher resolution than the D30 (3.1MP), but the D40 has smaller individual pixels (pixel pitch of 7.85μm versus 10.29μm for the D30). Yet, the D40 is a much more recent model (by 6 years and 6 months) than the D30, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units.

The resolution advantage of the Nikon D40 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the D40 for good quality output (200 dots per inch) amounts to 15 x 10 inches or 38.2 x 25.4 cm, for very good quality (250 dpi) 12 x 8 inches or 30.6 x 20.3 cm, and for excellent quality (300 dpi) 10 x 6.7 inches or 25.5 x 16.9 cm. The corresponding values for the Canon D30 are 10.8 x 7.2 inches or 27.4 x 18.3 cm for good quality, 8.6 x 5.8 inches or 21.9 x 14.6 cm for very good quality, and 7.2 x 4.8 inches or 18.3 x 12.2 cm for excellent quality prints.

The Canon EOS-D30 has a native sensitivity range from ISO 100 to ISO 1600. 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 D30 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.

For many cameras, data on sensor performance has been reported by DXO Mark. 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 following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

Sensor Characteristics

		Camera Model	Sensor Class	Resolution (MP)	Horiz. Pixels	Vert. Pixels	Video Format	DXO Portrait	DXO Landscape	DXO Sports	DXO Overall
1.		Canon D30	APS-C	3.1	2160	1440	none	..	..	..	..
2.		Nikon D40	APS-C	6.0	3008	2000	none	21.0	11.0	561	56
3.		Canon 10D	APS-C	6.3	3072	2048	none	21.1	10.9	571	57
4.		Canon 20D	APS-C	8.2	3504	2336	none	21.9	11.0	721	62
5.		Canon 30D	APS-C	8.2	3504	2336	none	21.5	10.8	736	59
6.		Canon 40D	APS-C	10.1	3888	2592	none	22.1	11.3	703	64
7.		Canon 80D	APS-C	24.0	6000	4000	1080/60p	23.6	13.2	1135	79
8.		Canon D60	APS-C	6.3	3072	2048	none	20.3	9.8	301	47
9.		Canon SL2	APS-C	24.0	6000	4000	1080/60p	23.6	13.4	1041	79
10.		Canon Rebel	APS-C	6.3	3072	2048	none	21.0	10.8	544	55
11.		Canon T7	APS-C	24.0	6000	4000	1080/30p	23.8	13.3	1684	81
12.		Canon T7i	APS-C	24.0	6000	4000	1080/60p	23.7	13.1	1586	80
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 D3100	APS-C	14.2	4608	3072	1080/24p	22.5	11.3	919	67
16.		Nikon D3300	APS-C	24.0	6000	4000	1080/60p	24.3	12.8	1385	82
17.		Nikon D3400	APS-C	24.0	6000	4000	1080/60p	24.8	13.9	1192	86
Note: DXO values in italics represent estimates based on sensor size and age.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. The D30 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%), but the viewfinder of the D30 has a higher magnification than the one of the D40 (0.54x vs 0.53x), 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 D30 and Nikon D40 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 D30	optical	Y	1.8 / 114	fixed	n	1/4000s	3.0/s	Y	n
2.		Nikon D40	optical	n	2.5 / 230	fixed	n	1/4000s	2.5/s	Y	n
3.		Canon 10D	optical	Y	1.8 / 118	fixed	n	1/4000s	3.0/s	Y	n
4.		Canon 20D	optical	Y	1.8 / 118	fixed	n	1/8000s	5.0/s	Y	n
5.		Canon 30D	optical	Y	2.5 / 230	fixed	n	1/8000s	5.0/s	Y	n
6.		Canon 40D	optical	Y	3.0 / 230	fixed	n	1/8000s	6.5/s	Y	n
7.		Canon 80D	optical	Y	3.0 / 1040	swivel	Y	1/8000s	7.0/s	Y	n
8.		Canon D60	optical	Y	1.8 / 114	fixed	n	1/4000s	3.0/s	Y	n
9.		Canon SL2	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
10.		Canon Rebel	optical	n	1.8 / 118	fixed	n	1/4000s	2.5/s	Y	n
11.		Canon T7	optical	n	3.0 / 920	fixed	n	1/4000s	3.0/s	Y	n
12.		Canon T7i	optical	n	3.0 / 1040	swivel	Y	1/4000s	6.0/s	Y	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 D3100	optical	n	3.0 / 230	fixed	n	1/4000s	3.0/s	Y	n
16.		Nikon D3300	optical	n	3.0 / 921	fixed	n	1/4000s	5.0/s	Y	n
17.		Nikon D3400	optical	n	3.0 / 921	fixed	n	1/4000s	5.0/s	Y	n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One feature that is present on the D30, but is missing on the D40 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.

The D30 writes its imaging data to Compact Flash 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-D30 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 D30	Y	- / -	-	-	-	1.0	-	-	-
2.		Nikon D40	Y	- / -	-	-	-	2.0	-	-	-
3.		Canon 10D	Y	- / -	-	-	-	1.1	-	-	-
4.		Canon 20D	Y	- / -	-	-	-	1.1	-	-	-
5.		Canon 30D	Y	- / -	-	-	-	2.0	-	-	-
6.		Canon 40D	Y	- / -	-	-	-	2.0	-	-	-
7.		Canon 80D	Y	stereo / mono	Y	Y	mini	2.0	Y	Y	-
8.		Canon D60	Y	- / -	-	-	-	1.1	-	-	-
9.		Canon SL2	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
10.		Canon Rebel	Y	- / -	-	-	-	1.1	-	-	-
11.		Canon T7	Y	mono / mono	-	-	mini	2.0	Y	Y	-
12.		Canon T7i	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
13.		Nikon D40X	Y	- / -	-	-	-	2.0	-	-	-
14.		Nikon D50	Y	- / -	-	-	-	2.0	-	-	-
15.		Nikon D3100	Y	mono / mono	-	-	mini	2.0	-	-	-
16.		Nikon D3300	Y	mono / mono	Y	-	mini	2.0	-	-	-
17.		Nikon D3400	Y	mono / mono	-	-	mini	2.0	-	-	Y

Studio photographers will appreciate that the Canon D30 (unlike the D40) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the D30 and the D40 have been discontinued, but can regularly be found used on ebay. The D30 was replaced by the Canon D60, while the D40 was followed by the Nikon D40X. Further information on the features and operation of the D30 and D40 can be found, respectively, in the Canon D30 Manual (free pdf) or the online Nikon D40 Manual.

Review summary

So what is the bottom line? Is there a clear favorite between the Canon D30 and the Nikon D40? Which camera is better? The listing below highlights the relative strengths of the two models.

Reasons to prefer the Canon EOS-D30:

• Larger viewfinder image: Features a viewfinder with a higher magnification (0.54x vs 0.53x).
• Easier setting verification: Features an LCD display on top to control shooting parameters.
• Faster burst: Shoots at higher frequency (3 vs 2.5 flaps/sec) to capture the decisive moment.
• Longer lasting: Can take more shots (540 versus 470) on a single battery charge.
• Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
• More heavily discounted: Has been available for much longer (launched in May 2000).

Arguments in favor of the Nikon D40:

• More detail: Has more megapixels (6 vs 3.1MP), which boosts linear resolution by 39%.
• Larger screen: Has a bigger rear LCD (2.5" vs 1.8") for image review and settings control.
• More detailed LCD: Has a higher resolution rear screen (230k vs 114k dots).
• More compact: Is smaller (124x94mm vs 150x107mm) and will fit more readily into a bag.
• Less heavy: Has a lower weight (by 228g or 30 percent) and is thus easier to take along.
• Faster data transfer: Supports a more advanced USB protocol (2.0 vs 1.0).
• More affordable: Was introduced into a lower priced category (83 percent cheaper at launch).
• More modern: Reflects 6 years and 6 months of technical progress since the D30 launch.

If the number of relative strengths (bullet points above) is taken as a guide, the D40 emerges as the winner of the match-up (8 : 6 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 D30 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 says little about, for example, the shooting experience and imaging performance of the D30 and the D40 in practical situations. 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 hands-on reviews by experts 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 D30	..	..	..	+ +	..	..	May 2000	2,999	ebay.com
2.		Nikon D40	..	81/100	..	+ +	o	4.5/5	Nov 2006	499	ebay.com
3.		Canon 10D	..	..	..	+ +	..	..	Feb 2003	1,999	ebay.com
4.		Canon 20D	..	..	..	+ +	..	..	Aug 2004	1,499	ebay.com
5.		Canon 30D	..	+ +	..	+ +	o	..	Feb 2006	1,399	ebay.com
6.		Canon 40D	..	+ +	..	+ +	4.5/5	4.5/5	Aug 2007	1,299	ebay.com
7.		Canon 80D	4/5	+ +	4.5/5	84/100	4.5/5	4.5/5	Feb 2016	1,199	ebay.com
8.		Canon D60	..	..	..	+ +	o	..	Feb 2002	2,999	ebay.com
9.		Canon SL2	4/5	+ +	4/5	78/100	4.5/5	4.5/5	Jun 2017	549	ebay.com
10.		Canon Rebel	..	..	..	+ +	..	..	Aug 2003	899	ebay.com
11.		Canon T7	..	o	3.5/5	..	3.5/5	3.5/5	Feb 2018	449	amazon.com
12.		Canon T7i	4.5/5	..	3.5/5	80/100	4.5/5	4/5	Feb 2017	749	ebay.com
13.		Nikon D40X	..	79/100	..	+ +	4/5	4/5	Mar 2007	729	ebay.com
14.		Nikon D50	..	78/100	..	+ +	4/5	4.5/5	Apr 2005	749	ebay.com
15.		Nikon D3100	5/5	+ +	..	72/100	4.5/5	4.5/5	Aug 2010	599	ebay.com
16.		Nikon D3300	3/5	+	..	77/100	4.5/5	4.5/5	Jan 2014	499	ebay.com
17.		Nikon D3400	4/5	+	4/5	76/100	4/5	4.5/5	Aug 2016	499	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. A score, therefore, has to be seen in close connection to the price and market introduction time 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. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

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Other camera comparisons

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