Nikon D40X vs Olympus E-PL8

The Nikon D40X and the Olympus PEN E-PL8 are two digital cameras that were revealed to the public, respectively, in March 2007 and September 2016. The D40X is a DSLR, while the E-PL8 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (D40X) and a Four Thirds (E-PL8) sensor. The Nikon has a resolution of 10 megapixels, whereas the Olympus 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

Nikon D40X		Olympus E-PL8
Digital single lens reflex		Mirrorless system camera
Nikon F mount lenses		Micro Four Thirds lenses
10 MP – APS-C sensor		15.9 MP – Four Thirds sensor
no Video		1080/30p Video
ISO 100-1,600 (100 - 3,200)		ISO 200-6,400 (100 - 25,600)
Optical viewfinder		Viewfinder optional
2.5" LCD – 230k dots		3.0" LCD – 1037k dots
Fixed screen (not touch-sensitive)		Tilting touchscreen
3 shutter flaps per second		8 shutter flaps per second
Lens stabilization only		In-body stabilization
520 shots per battery charge		350 shots per battery charge
124 x 94 x 64 mm, 522 g		115 x 67 x 38 mm, 357 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D40X and the Olympus PEN E-PL8? 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

An illustration of the physical size and weight of the Nikon D40X and the Olympus E-PL8 is provided 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.

The D40X can be obtained in two different colors (black, silver), while the E-PL8 is available in three color-versions (black, brown, white).

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-PL8 is considerably smaller (34 percent) than the Nikon D40X. Moreover, the E-PL8 is markedly lighter (32 percent) than the D40X. In this context, it is worth noting that neither the D40X nor the E-PL8 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. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can compare the optics available for the two cameras in the Nikon Lens Catalog (D40X) and the Micro Four Thirds Lens Catalog (E-PL8). Mirrorless cameras, such as the E-PL8, have moreover the advantage that they can use many lenses from other systems via adapters, as they have a relatively short flange to focal plane distance.

Concerning battery life, the D40X gets 520 shots out of its Nikon EN-EL9 battery, while the E-PL8 can take 350 images on a single charge of its Olympus BLS-50 power pack.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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.		Nikon D40X	124 mm	94 mm	64 mm	522 g	520	n	Mar 2007	US$ 729	ebay.com
2.		Olympus E-PL8	115 mm	67 mm	38 mm	357 g	350	n	Sep 2016	US$ 549	ebay.com
3.		Canon 400D	127 mm	84 mm	65 mm	556 g	370	n	Aug 2006	US$ 799	ebay.com
4.		Canon 450D	129 mm	98 mm	62 mm	524 g	500	n	Jan 2008	US$ 799	ebay.com
5.		Nikon D40	124 mm	94 mm	64 mm	522 g	470	n	Nov 2006	US$ 499	ebay.com
6.		Nikon D60	126 mm	94 mm	64 mm	522 g	500	n	Jan 2008	US$ 629	ebay.com
7.		Nikon D90	132 mm	103 mm	77 mm	703 g	850	n	Aug 2008	US$ 1 299	ebay.com
8.		Nikon D3000	126 mm	97 mm	64 mm	536 g	500	n	Jul 2009	US$ 599	ebay.com
9.		Nikon D3100	124 mm	96 mm	75 mm	505 g	550	n	Aug 2010	US$ 599	ebay.com
10.		Nikon D5000	127 mm	104 mm	80 mm	590 g	510	n	Apr 2009	US$ 749	ebay.com
11.		Olympus E-420	130 mm	91 mm	53 mm	440 g	500	n	Mar 2008	US$ 599	ebay.com
12.		Olympus E-M10 II	120 mm	83 mm	47 mm	390 g	320	n	Aug 2015	US$ 649	ebay.com
13.		Olympus E-M10 III	122 mm	84 mm	50 mm	410 g	330	n	Aug 2017	US$ 649	ebay.com
14.		Olympus E-PL6	111 mm	64 mm	38 mm	325 g	360	n	May 2013	US$ 599	ebay.com
15.		Olympus E-PL7	115 mm	67 mm	38 mm	357 g	350	n	Aug 2014	US$ 599	ebay.com
16.		Olympus E-PL9	117 mm	68 mm	39 mm	380 g	350	n	Feb 2018	US$ 599	ebay.com
17.		Panasonic L10	135 mm	96 mm	78 mm	556 g	450	n	Aug 2007	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

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 E-PL8 was launched at a somewhat lower price (by 25 percent) than the D40X, 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

Sensor comparison

The size of the imaging sensor is a crucial determinant 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. 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 Nikon D40X features an APS-C sensor and the Olympus E-PL8 a Four Thirds sensor. The sensor area in the E-PL8 is 40 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 2.0. The sensor in the D40X has a native 3:2 aspect ratio, while the one in the E-PL8 offers a 4:3 aspect.

Despite having a smaller sensor, the E-PL8 offers a higher resolution of 15.9 megapixels, compared with 10 MP of the D40X. 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 3.76μm versus 6.11μm for the D40X). However, it should be noted that the E-PL8 is much more recent (by 9 years and 6 months) than the D40X, 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 Olympus E-PL8 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the E-PL8 for good quality output (200 dots per inch) amounts to 23 x 17.3 inches or 58.5 x 43.9 cm, for very good quality (250 dpi) 18.4 x 13.8 inches or 46.8 x 35.1 cm, and for excellent quality (300 dpi) 15.4 x 11.5 inches or 39 x 29.3 cm. The corresponding values for the Nikon D40X are 19.4 x 13 inches or 49.2 x 32.9 cm for good quality, 15.5 x 10.4 inches or 39.3 x 26.3 cm for very good quality, and 12.9 x 8.6 inches or 32.8 x 21.9 cm for excellent quality prints.

The Nikon D40X 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 Olympus PEN E-PL8 are ISO 200 to ISO 6400, with the possibility to increase the ISO range to 100-25600.

In terms of underlying technology, the D40X is build around a CCD sensor, while the E-PL8 uses a 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 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 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.		Nikon D40X	APS-C	10.0	3872	2592	none	22.4	11.4	516	63
2.		Olympus E-PL8	Four Thirds	15.9	4608	3456	1080/30p	23.0	12.6	1030	73
3.		Canon 400D	APS-C	10.1	3888	2592	none	22.1	11.0	664	62
4.		Canon 450D	APS-C	12.2	4272	2848	none	21.9	10.8	692	61
5.		Nikon D40	APS-C	6.0	3008	2000	none	21.0	11.0	561	56
6.		Nikon D60	APS-C	10.0	3872	2592	none	22.5	11.4	562	65
7.		Nikon D90	APS-C	12.2	4288	2848	720/24p	22.7	12.5	977	73
8.		Nikon D3000	APS-C	10.0	3872	2592	none	22.3	11.1	563	62
9.		Nikon D3100	APS-C	14.2	4608	3072	1080/24p	22.5	11.3	919	67
10.		Nikon D5000	APS-C	12.2	4288	2848	720/24p	22.7	12.5	868	72
11.		Olympus E-420	Four Thirds	10.0	3648	2736	none	21.5	10.4	527	56
12.		Olympus E-M10 II	Four Thirds	15.9	4608	3456	1080/60p	23.1	12.5	842	73
13.		Olympus E-M10 III	Four Thirds	15.9	4608	3456	4K/30p	23.1	12.8	1120	74
14.		Olympus E-PL6	Four Thirds	15.9	4608	3456	1080/30p	22.5	12.0	717	68
15.		Olympus E-PL7	Four Thirds	15.9	4608	3456	1080/30p	22.7	12.4	873	72
16.		Olympus E-PL9	Four Thirds	15.9	4608	3456	4K/30p	23.1	12.8	1162	74
17.		Panasonic L10	Four Thirds	10.0	3648	2736	none	21.3	10.8	429	55
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 also of capturing video footage. The E-PL8 indeed provides for movie recording, while the D40X does not. The highest resolution format that the E-PL8 can use is 1080/30p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the D40X has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the E-PL8 relies on live view and the rear LCD for framing. That said, the E-PL8 can be equipped with an optional viewfinder – the VF-4. The following table reports on some other key feature differences and similarities of the Nikon D40X, the Olympus E-PL8, and comparable 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.		Nikon D40X	optical	n	2.5 / 230	fixed	n	1/4000s	3.0/s	Y	n
2.		Olympus E-PL8	optional	n	3.0 / 1037	tilting	Y	1/4000s	8.0/s	n	Y
3.		Canon 400D	optical	n	2.5 / 230	fixed	n	1/4000s	3.0/s	Y	n
4.		Canon 450D	optical	n	3.0 / 230	fixed	n	1/4000s	3.5/s	Y	n
5.		Nikon D40	optical	n	2.5 / 230	fixed	n	1/4000s	2.5/s	Y	n
6.		Nikon D60	optical	n	2.5 / 230	fixed	n	1/4000s	3.0/s	Y	n
7.		Nikon D90	optical	Y	3.0 / 920	fixed	n	1/4000s	4.5/s	Y	n
8.		Nikon D3000	optical	n	3.0 / 230	fixed	n	1/4000s	3.0/s	Y	n
9.		Nikon D3100	optical	n	3.0 / 230	fixed	n	1/4000s	3.0/s	Y	n
10.		Nikon D5000	optical	n	2.7 / 230	full-flex	n	1/4000s	4.0/s	Y	n
11.		Olympus E-420	optical	n	2.7 / 215	fixed	n	1/4000s	3.5/s	Y	n
12.		Olympus E-M10 II	2360	n	3.0 / 1040	tilting	Y	1/4000s	8.0/s	Y	Y
13.		Olympus E-M10 III	2360	n	3.0 / 1040	tilting	Y	1/4000s	8.6/s	Y	Y
14.		Olympus E-PL6	optional	n	3.0 / 460	tilting	Y	1/4000s	8.0/s	n	Y
15.		Olympus E-PL7	optional	n	3.0 / 1037	tilting	Y	1/4000s	8.0/s	n	Y
16.		Olympus E-PL9	none	n	3.0 / 1040	tilting	Y	1/4000s	8.6/s	Y	Y
17.		Panasonic L10	optical	n	2.5 / 207	swivel	n	1/4000s	3.0/s	Y	n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One difference between the cameras concerns the presence of an on-board flash. The D40X has one, while the E-PL8 does not. While the built-in flash of the D40X is not very powerful, it can at times be useful as a fill-in light.

The Olympus E-PL8 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 D40X writes its imaging data to SDHC cards, while the E-PL8 uses SDXC cards. The E-PL8 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the D40X 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 Nikon D40X and Olympus PEN E-PL8 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.		Nikon D40X	Y	- / -	-	-	-	2.0	-	-	-
2.		Olympus E-PL8	Y	stereo / mono	-	-	micro	2.0	Y	-	-
3.		Canon 400D	Y	- / -	-	-	-	2.0	-	-	-
4.		Canon 450D	Y	- / -	-	-	mini	2.0	-	-	-
5.		Nikon D40	Y	- / -	-	-	-	2.0	-	-	-
6.		Nikon D60	Y	- / -	-	-	-	2.0	-	-	-
7.		Nikon D90	Y	mono / mono	-	-	mini	2.0	-	-	-
8.		Nikon D3000	Y	- / -	-	-	-	2.0	-	-	-
9.		Nikon D3100	Y	mono / mono	-	-	mini	2.0	-	-	-
10.		Nikon D5000	Y	mono / mono	-	-	mini	2.0	-	-	-
11.		Olympus E-420	Y	- / -	-	-	-	2.0	-	-	-
12.		Olympus E-M10 II	Y	stereo / mono	-	-	micro	2.0	Y	-	-
13.		Olympus E-M10 III	Y	stereo / mono	-	-	micro	2.0	Y	-	-
14.		Olympus E-PL6	Y	stereo / mono	-	-	mini	2.0	-	-	-
15.		Olympus E-PL7	Y	stereo / mono	-	-	micro	2.0	Y	-	-
16.		Olympus E-PL9	Y	stereo / mono	-	-	micro	2.0	Y	-	Y
17.		Panasonic L10	Y	- / -	-	-	-	2.0	-	-	-

It is notable that the E-PL8 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the D40X does not provide wifi capability.

Both the D40X and the E-PL8 have been discontinued, but can regularly be found used on ebay. The D40X was replaced by the Nikon D60 , while the E-PL8 was followed by the Olympus E-PL9. Further information on the features and operation of the D40X and E-PL8 can be found, respectively, in the Nikon D40X Manual (free pdf) or the online Olympus E-PL8 Manual.

Review summary

So how do things add up? Is the Nikon D40X better than the Olympus E-PL8 or vice versa? The listing below highlights the relative strengths of the two models.

Reasons to prefer the Nikon D40X:

• Easier framing: Has an optical viewfinder for image composition and settings control.
• Longer lasting: Can take more shots (520 versus 350) on a single battery charge.
• Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
• More heavily discounted: Has been available for much longer (launched in March 2007).

Arguments in favor of the Olympus PEN E-PL8:

• More detail: Has more megapixels (15.9 vs 10MP), which boosts linear resolution by 24%.
• Broader imaging potential: Can capture not only stills but also 1080/30p video.
• 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 (1037k vs 230k dots).
• More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
• Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
• More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
• Faster burst: Shoots at higher frequency (8 vs 3 flaps/sec) to capture the decisive moment.
• Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
• More compact: Is smaller (115x67mm vs 124x94mm) and will fit more readily into a bag.
• Less heavy: Has a lower weight (by 165g or 32 percent) and is thus easier to take along.
• Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
• More legacy lens friendly: Can use many non-native lenses via adapters.
• Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
• Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
• More affordable: Was released into a lower priced segment (25 percent cheaper at launch).
• More modern: Reflects 9 years and 6 months of technical progress since the D40X launch.

If the count of relative strengths (bullet points above) is taken as a measure, the E-PL8 is the clear winner of the contest (17 : 4 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 Nikon D40X and the Olympus E-PL8 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Mirrorless Interchangeable Lens Camera listings whether the two cameras rank among the cream of the crop.

In any case, while the specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains incomplete and does no justice, for example, to the way the D40X or the E-PL8 perform in practice. 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 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	Street Price
1.		Nikon D40X	..	79/100	..	+ +	4/5	4/5	Mar 2007	US$ 729	ebay.com
2.		Olympus E-PL8	..	..	..	..	4.5/5	4/5	Sep 2016	US$ 549	ebay.com
3.		Canon 400D	..	+ +	..	+ +	o	4/5	Aug 2006	US$ 799	ebay.com
4.		Canon 450D	..	+ +	..	+ +	4/5	4.5/5	Jan 2008	US$ 799	ebay.com
5.		Nikon D40	..	81/100	..	+ +	o	4.5/5	Nov 2006	US$ 499	ebay.com
6.		Nikon D60	..	80/100	..	+ +	4/5	4.5/5	Jan 2008	US$ 629	ebay.com
7.		Nikon D90	..	+ +	..	+ +	4/5	4.5/5	Aug 2008	US$ 1 299	ebay.com
8.		Nikon D3000	..	+	..	72/100	4/5	4.5/5	Jul 2009	US$ 599	ebay.com
9.		Nikon D3100	5/5	+ +	..	72/100	4.5/5	4.5/5	Aug 2010	US$ 599	ebay.com
10.		Nikon D5000	..	+ +	..	75/100	4/5	4.5/5	Apr 2009	US$ 749	ebay.com
11.		Olympus E-420	..	85/100	..	+ +	4/5	4.5/5	Mar 2008	US$ 599	ebay.com
12.		Olympus E-M10 II	4.5/5	+ +	..	80/100	5/5	5/5	Aug 2015	US$ 649	ebay.com
13.		Olympus E-M10 III	..	+	5/5	80/100	4.5/5	4.5/5	Aug 2017	US$ 649	ebay.com
14.		Olympus E-PL6	..	..	..	..	..	..	May 2013	US$ 599	ebay.com
15.		Olympus E-PL7	4/5	+	..	..	5/5	4/5	Aug 2014	US$ 599	ebay.com
16.		Olympus E-PL9	..	+	..	..	4.5/5	4/5	Feb 2018	US$ 599	ebay.com
17.		Panasonic L10	..	85/100	..	+	3.5/5	4/5	Aug 2007	US$ 599	ebay.com
Note: (+ +) 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. 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. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

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Other camera comparisons

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