Canon 40D vs Nikon P7800

The Canon EOS 40D and the Nikon Coolpix P7800 are two digital cameras that were officially introduced, respectively, in August 2007 and September 2013. The 40D is a DSLR, while the P7800 is a fixed lens compact. The cameras are based on an APS-C (40D) and a 1/1.7-inch (P7800) sensor. The Canon has a resolution of 10.1 megapixels, whereas the Nikon provides 12 MP.

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

Headline Specifications

Canon 40D		Nikon P7800
Digital single lens reflex		Fixed lens compact camera
Canon EF mount lenses		28-200mm f/2.0-4.0
10.1 MP – APS-C sensor		12 MP – 1/1.7" sensor
no Video		1080/30p Video
ISO 100-1,600 (100 - 3,200)		ISO 80-3,200 (80 - 6,400)
Optical viewfinder		Electronic viewfinder (921k dots)
3.0" LCD – 230k dots		3.0" LCD – 921k dots
Fixed screen (not touch-sensitive)		Swivel screen (not touch-sensitive)
6.5 shutter flaps per second		8 shutter flaps per second
750 shots per battery charge		350 shots per battery charge
146 x 108 x 74 mm, 822 g		119 x 78 x 50 mm, 399 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 40D and the Nikon Coolpix P7800? 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 40D and the Nikon P7800. 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.

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Nikon P7800 is considerably smaller (41 percent) than the Canon 40D. In this context, it is worth noting that neither the 40D nor the P7800 are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the P7800 has a lens built in, whereas the 40D 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 40D and their specifications in the Canon EF Lens Catalog.

Concerning battery life, the 40D gets 750 shots out of its Canon BP-511A battery, while the P7800 can take 350 images on a single charge of its Nikon EN-EL14 power pack.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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 40D	146 mm	108 mm	74 mm	822 g	750	n	Aug 2007	1,299	ebay.com
2.		Nikon P7800	119 mm	78 mm	50 mm	399 g	350	n	Sep 2013	549	ebay.com
3.		Canon 70D	139 mm	104 mm	79 mm	755 g	920	Y	Jul 2013	1,199	ebay.com
4.		Canon G16	109 mm	76 mm	40 mm	356 g	360	n	Aug 2013	549	ebay.com
5.		Canon G15	107 mm	76 mm	40 mm	352 g	350	n	Sep 2012	499	ebay.com
6.		Canon 60D	145 mm	106 mm	79 mm	755 g	1100	Y	Aug 2010	1,399	ebay.com
7.		Canon 50D	146 mm	108 mm	74 mm	822 g	800	Y	Aug 2008	1,299	ebay.com
8.		Canon 450D	129 mm	98 mm	62 mm	524 g	500	n	Jan 2008	799	ebay.com
9.		Canon 1000D	126 mm	98 mm	65 mm	502 g	500	n	Jun 2008	449	ebay.com
10.		Canon 30D	144 mm	106 mm	74 mm	785 g	750	n	Feb 2006	1,399	ebay.com
11.		Canon 400D	127 mm	84 mm	65 mm	556 g	370	n	Aug 2006	799	ebay.com
12.		Canon 20D	144 mm	106 mm	72 mm	770 g	700	n	Aug 2004	1,499	ebay.com
13.		Fujifilm X30	119 mm	72 mm	60 mm	423 g	470	n	Aug 2014	599	ebay.com
14.		Fujifilm X20	117 mm	70 mm	57 mm	353 g	270	n	Jan 2013	599	ebay.com
15.		Fujifilm X10	117 mm	70 mm	57 mm	350 g	270	n	Sep 2011	599	ebay.com
16.		Nikon D90	132 mm	103 mm	77 mm	703 g	850	n	Aug 2008	1,299	ebay.com
17.		Olympus E-30	142 mm	108 mm	75 mm	701 g	750	n	Nov 2008	1,299	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

The price is, of course, an important factor in any camera decision. 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 P7800 was launched at a lower price than the 40D, despite having a lens built in. 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. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixels 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 tend to be more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Canon 40D features an APS-C sensor and the Nikon P7800 a 1/1.7-inch sensor. The sensor area in the P7800 is 87 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 4.5. The sensor in the 40D has a native 3:2 aspect ratio, while the one in the P7800 offers a 4:3 aspect.

Despite having a smaller sensor, the P7800 offers a higher resolution of 12 megapixels, compared with 10.1 MP of the 40D. 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 1.89μm versus 5.73μm for the 40D). However, it should be noted that the P7800 is much more recent (by 6 years) than the 40D, 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 Nikon P7800 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the P7800 for good quality output (200 dots per inch) amounts to 20 x 15 inches or 50.8 x 38.1 cm, for very good quality (250 dpi) 16 x 12 inches or 40.6 x 30.5 cm, and for excellent quality (300 dpi) 13.3 x 10 inches or 33.9 x 25.4 cm. The corresponding values for the Canon 40D are 19.4 x 13 inches or 49.4 x 32.9 cm for good quality, 15.6 x 10.4 inches or 39.5 x 26.3 cm for very good quality, and 13 x 8.6 inches or 32.9 x 21.9 cm for excellent quality prints.

The Canon EOS 40D has a native sensitivity range from ISO 100 to ISO 1600, which can be extended to ISO 100-3200. The corresponding ISO settings for the Nikon Coolpix P7800 are ISO 80 to ISO 3200, with the possibility to increase the ISO range to 80-6400.

In terms of underlying technology, the 40D is build around a CMOS sensor, while the P7800 uses a BSI-CMOS 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 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 40D has a notably higher overall DXO score than the P7800 (overall score 10 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 0.9 bits higher color depth, 0.4 EV of lower dynamic range, and 1.8 stops in additional low light sensitivity. 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 40D	APS-C	10.1	3888	2592	none	22.1	11.3	703	64
2.		Nikon P7800	1/1.7	12.0	4000	3000	1080/30p	21.2	11.7	200	54
3.		Canon 70D	APS-C	20.0	5472	3648	1080/30p	22.5	11.6	926	68
4.		Canon G16	1/1.7	12.0	4000	3000	1080/60p	21.0	11.7	230	54
5.		Canon G15	1/1.7	12.0	4000	3000	1080/24p	19.9	11.5	165	46
6.		Canon 60D	APS-C	17.9	5184	3456	1080/30p	22.2	11.5	813	66
7.		Canon 50D	APS-C	15.1	4752	3168	none	21.8	11.4	696	63
8.		Canon 450D	APS-C	12.2	4272	2848	none	21.9	10.8	692	61
9.		Canon 1000D	APS-C	10.1	3888	2592	none	22.0	10.9	719	62
10.		Canon 30D	APS-C	8.2	3504	2336	none	21.5	10.8	736	59
11.		Canon 400D	APS-C	10.1	3888	2592	none	22.1	11.0	664	62
12.		Canon 20D	APS-C	8.2	3504	2336	none	21.9	11.0	721	62
13.		Fujifilm X30	2/3	12.0	4000	3000	1080/60p	20.4	11.2	-312	49
14.		Fujifilm X20	2/3	12.0	4000	3000	1080/60p	20.1	10.9	-462	46
15.		Fujifilm X10	2/3	12.0	4000	3000	1080/30p	20.5	11.3	245	50
16.		Nikon D90	APS-C	12.2	4288	2848	720/24p	22.7	12.5	977	73
17.		Olympus E-30	Four Thirds	12.2	4032	3024	none	21.3	10.4	530	55
Note: DXO values in italics represent estimates based on sensor size and age.

Many modern cameras cannot only take still pictures, but also record videos. The P7800 indeed provides for movie recording, while the 40D does not. The highest resolution format that the P7800 can use is 1080/30p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. For example, the P7800 has an electronic viewfinder (921k dots), while the 40D has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The table below summarizes some of the other core capabilities of the Canon 40D and Nikon P7800 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 40D	optical	Y	3.0 / 230	fixed	n	1/8000s	6.5/s	Y	n
2.		Nikon P7800	921	n	3.0 / 921	swivel	n	1/4000s	8.0/s	Y	Y
3.		Canon 70D	optical	Y	3.0 / 1040	swivel	Y	1/8000s	7.0/s	Y	n
4.		Canon G16	optical	n	3.0 / 922	fixed	n	1/4000s	2.2/s	Y	Y
5.		Canon G15	optical	n	3.0 / 922	fixed	n	1/4000s	2.1/s	Y	Y
6.		Canon 60D	optical	Y	3.0 / 1040	swivel	n	1/8000s	5.3/s	Y	n
7.		Canon 50D	optical	Y	3.0 / 920	fixed	n	1/8000s	6.3/s	Y	n
8.		Canon 450D	optical	n	3.0 / 230	fixed	n	1/4000s	3.5/s	Y	n
9.		Canon 1000D	optical	n	2.5 / 230	fixed	n	1/4000s	3.0/s	Y	n
10.		Canon 30D	optical	Y	2.5 / 230	fixed	n	1/8000s	5.0/s	Y	n
11.		Canon 400D	optical	n	2.5 / 230	fixed	n	1/4000s	3.0/s	Y	n
12.		Canon 20D	optical	Y	1.8 / 118	fixed	n	1/8000s	5.0/s	Y	n
13.		Fujifilm X30	2360	n	3.0 / 920	tilting	n	1/4000s	12.0/s	Y	Y
14.		Fujifilm X20	optical	n	2.8 / 460	fixed	n	1/4000s	12.0/s	Y	Y
15.		Fujifilm X10	optical	n	2.8 / 460	fixed	n	1/4000s	10.0/s	Y	Y
16.		Nikon D90	optical	Y	3.0 / 920	fixed	n	1/4000s	4.5/s	Y	n
17.		Olympus E-30	optical	Y	2.7 / 230	swivel	n	1/8000s	5.0/s	Y	Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One feature that is present on the 40D, but is missing on the P7800 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 Nikon P7800 has an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.

The 40D writes its imaging data to Compact Flash cards, while the P7800 uses SDXC 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 40D and Nikon Coolpix P7800 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 40D	Y	- / -	-	-	-	2.0	-	-	-
2.		Nikon P7800	Y	stereo / mono	Y	-	mini	2.0	-	-	-
3.		Canon 70D	Y	stereo / mono	Y	-	mini	2.0	Y	-	-
4.		Canon G16	Y	stereo / mono	-	-	mini	2.0	Y	-	-
5.		Canon G15	Y	stereo / mono	-	-	mini	2.0	-	-	-
6.		Canon 60D	Y	mono / mono	Y	-	mini	2.0	-	-	-
7.		Canon 50D	Y	- / -	-	-	mini	2.0	-	-	-
8.		Canon 450D	Y	- / -	-	-	mini	2.0	-	-	-
9.		Canon 1000D	Y	- / -	-	-	-	2.0	-	-	-
10.		Canon 30D	Y	- / -	-	-	-	2.0	-	-	-
11.		Canon 400D	Y	- / -	-	-	-	2.0	-	-	-
12.		Canon 20D	Y	- / -	-	-	-	1.1	-	-	-
13.		Fujifilm X30	Y	stereo / mono	-	-	micro	2.0	Y	-	-
14.		Fujifilm X20	Y	stereo / mono	-	-	micro	2.0	-	-	-
15.		Fujifilm X10	Y	stereo / mono	-	-	mini	2.0	-	-	-
16.		Nikon D90	Y	mono / mono	-	-	mini	2.0	-	-	-
17.		Olympus E-30	Y	- / -	-	-	-	2.0	-	-	-

Studio photographers will appreciate that the Canon 40D (unlike the P7800) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the 40D and the P7800 have been discontinued, but can regularly be found used on ebay. The 40D was replaced by the Canon 50D, while the P7800 does not have a direct successor. Further information on the features and operation of the 40D and P7800 can be found, respectively, in the Canon 40D Manual (free pdf) or the online Nikon P7800 Manual.

Review summary

So what conclusions can be drawn? Is the Canon 40D better than the Nikon P7800 or vice versa? The listing below highlights the relative strengths of the two models.

Advantages of the Canon EOS 40D:

• Better image quality: Scores markedly higher (10 points) in the DXO overall assessment.
• Better low-light sensitivity: Requires less light for good images (1.8 stops ISO advantage).
• Brighter framing: Features an optical viewfinder for clear, lag-free composition.
• Easier setting verification: Features an LCD display on top to control shooting parameters.
• Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
• More flexible: Can take a variety of interchangeable lenses, including specialty optics.
• Longer lasting: Can take more shots (750 versus 350) 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 August 2007).

Reasons to prefer the Nikon Coolpix P7800:

• More detail: Has more megapixels (12 vs 10.1MP), which boosts linear resolution by 7%.
• Broader imaging potential: Can capture not only stills but also 1080/30p video.
• More framing info: Has an electronic viewfinder that displays shooting data.
• More detailed LCD: Has a higher resolution rear screen (921k 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 (8 vs 6.5 flaps/sec) to capture the decisive moment.
• Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
• Ready to shoot: Comes with an integrated lens, while the 40D requires a separate lens.
• More compact: Is smaller (119x78mm vs 146x108mm) and will fit more readily into a bag.
• Less heavy: Has a lower weight even though it has a lens built in (unlike the 40D).
• Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
• More affordable: Was introduced at a lower price, despite coming with a built-in lens.
• More modern: Reflects 6 years of technical progress since the 40D launch.

If the number of relative strengths (bullet points above) is taken as a guide, the P7800 is the clear winner of the contest (14 : 9 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 40D and the Nikon P7800 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Travel-Zoom 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 40D or the P7800 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 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 (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 40D	..	+ +	..	+ +	4.5/5	4.5/5	Aug 2007	1,299	ebay.com
2.		Nikon P7800	3/5	..	..	..	4/5	4.5/5	Sep 2013	549	ebay.com
3.		Canon 70D	5/5	+ +	..	83/100	4.5/5	5/5	Jul 2013	1,199	ebay.com
4.		Canon G16	4/5	+	..	..	4.5/5	4.5/5	Aug 2013	549	ebay.com
5.		Canon G15	4/5	+	..	76/100	4.5/5	4.5/5	Sep 2012	499	ebay.com
6.		Canon 60D	5/5	+	..	79/100	4/5	4.5/5	Aug 2010	1,399	ebay.com
7.		Canon 50D	..	+ +	..	+ +	4.5/5	4.5/5	Aug 2008	1,299	ebay.com
8.		Canon 450D	..	+ +	..	+ +	4/5	4.5/5	Jan 2008	799	ebay.com
9.		Canon 1000D	..	82/100	..	+ +	3.5/5	4.5/5	Jun 2008	449	ebay.com
10.		Canon 30D	..	+ +	..	+ +	o	..	Feb 2006	1,399	ebay.com
11.		Canon 400D	..	+ +	..	+ +	o	4/5	Aug 2006	799	ebay.com
12.		Canon 20D	..	..	..	+ +	..	..	Aug 2004	1,499	ebay.com
13.		Fujifilm X30	4/5	..	..	76/100	4.5/5	4.5/5	Aug 2014	599	ebay.com
14.		Fujifilm X20	4/5	+ +	..	77/100	4.5/5	5/5	Jan 2013	599	ebay.com
15.		Fujifilm X10	..	..	..	76/100	4/5	4.5/5	Sep 2011	599	ebay.com
16.		Nikon D90	..	+ +	..	+ +	4/5	4.5/5	Aug 2008	1,299	ebay.com
17.		Olympus E-30	..	..	..	71/100	4.5/5	4/5	Nov 2008	1,299	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. 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.

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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. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

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