Nikon D2H vs Olympus E-P3

The Nikon D2H and the Olympus PEN E-P3 are two digital cameras that were officially introduced, respectively, in July 2003 and June 2011. The D2H is a DSLR, while the E-P3 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (D2H) and a Four Thirds (E-P3) sensor. The Nikon has a resolution of 4 megapixels, whereas the Olympus provides 12.2 MP.

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

Headline Specifications

Nikon D2H		Olympus E-P3
Digital single lens reflex		Mirrorless system camera
Nikon F mount lenses		Micro Four Thirds lenses
4 MP – APS-C sensor		12.2 MP – Four Thirds sensor
no Video		1080/60i Video
ISO 200-1,600 (200 - 6,400)		ISO 200-12,800
Optical viewfinder		Viewfinder optional
2.5" LCD – 211k dots		3.0" LCD – 614k dots
Fixed screen (not touch-sensitive)		Fixed touchscreen
8 shutter flaps per second		3 shutter flaps per second
Lens stabilization only		In-body stabilization
Weathersealed body		not weather sealed
2900 shots per battery charge		330 shots per battery charge
158 x 150 x 86 mm, 1070 g		122 x 69 x 34 mm, 369 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D2H and the Olympus PEN E-P3? 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 D2H and the Olympus E-P3 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 measures are rounded to the nearest millimeter.

The E-P3 can be obtained in three different colors (black, silver, white), while the D2H is only available in black.

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-P3 is considerably smaller (64 percent) than the Nikon D2H. Moreover, the E-P3 is substantially lighter (66 percent) than the D2H. It is worth mentioning in this context that the D2H is splash and dust resistant, while the E-P3 does not feature any corresponding weather-sealing.

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 (D2H) and the Micro Four Thirds Lens Catalog (E-P3). Mirrorless cameras, such as the E-P3, 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 D2H gets 2900 shots out of its Nikon EN-EL4a battery, while the E-P3 can take 330 images on a single charge of its Olympus BLS-5 power pack. As can be seen in the images above, the D2H has a battery grip built in. This facilitates image-taking in portrait orientation and gives it additional battery power.

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.		Nikon D2H	158 mm	150 mm	86 mm	1070 g	2900	Y	Jul 2003	3,499	ebay.com
2.		Olympus E-P3	122 mm	69 mm	34 mm	369 g	330	n	Jun 2011	799	ebay.com
3.		Nikon D810	146 mm	123 mm	82 mm	980 g	1200	Y	Jun 2014	3,299	ebay.com
4.		Nikon D300S	147 mm	115 mm	81 mm	938 g	950	Y	Jul 2009	1,799	ebay.com
5.		Nikon D700	147 mm	123 mm	77 mm	1074 g	1000	Y	Jul 2008	2,999	ebay.com
6.		Nikon D300	147 mm	114 mm	74 mm	925 g	1000	Y	Aug 2007	1,799	ebay.com
7.		Nikon D2Xs	158 mm	150 mm	86 mm	1252 g	3800	Y	Jun 2006	4,699	ebay.com
8.		Nikon D200	147 mm	113 mm	74 mm	920 g	400	Y	Nov 2005	1,699	ebay.com
9.		Nikon D2X	158 mm	150 mm	86 mm	1252 g	3800	Y	Sep 2004	4,999	ebay.com
10.		Nikon D1H	157 mm	153 mm	85 mm	1100 g	1200	Y	Feb 2001	4,499	ebay.com
11.		Nikon D1X	157 mm	153 mm	85 mm	1100 g	1200	Y	Feb 2001	5,999	ebay.com
12.		Nikon D1	157 mm	153 mm	85 mm	1100 g	..	Y	Jun 1999	5,499	ebay.com
13.		Olympus E-PL2	114 mm	72 mm	42 mm	362 g	280	n	Jan 2011	599	ebay.com
14.		Olympus E-PL3	110 mm	64 mm	37 mm	313 g	300	n	Jun 2011	599	ebay.com
15.		Olympus E-PL1	115 mm	72 mm	42 mm	334 g	290	n	Feb 2010	599	ebay.com
16.		Olympus E-P1	121 mm	70 mm	36 mm	355 g	300	n	Jun 2009	799	ebay.com
17.		Olympus E-P2	121 mm	70 mm	36 mm	355 g	300	n	Nov 2009	799	ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
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The price is, of course, an important factor in any camera decision. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The E-P3 was launched at a markedly lower price (by 77 percent) than the D2H, 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. 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. 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Nikon D2H features an APS-C sensor and the Olympus E-P3 a Four Thirds sensor. The sensor area in the E-P3 is 38 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 D2H has a native 3:2 aspect ratio, while the one in the E-P3 offers a 4:3 aspect.

Despite having a smaller sensor, the E-P3 offers a higher resolution of 12.2 megapixels, compared with 4 MP of the D2H. 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 4.29μm versus 9.50μm for the D2H). However, it should be noted that the E-P3 is much more recent (by 7 years and 11 months) than the D2H, 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-P3 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the E-P3 for good quality output (200 dots per inch) amounts to 20.2 x 15.1 inches or 51.2 x 38.4 cm, for very good quality (250 dpi) 16.1 x 12.1 inches or 41 x 30.7 cm, and for excellent quality (300 dpi) 13.4 x 10.1 inches or 34.1 x 25.6 cm. The corresponding values for the Nikon D2H are 12.3 x 8.2 inches or 31.3 x 20.7 cm for good quality, 9.9 x 6.5 inches or 25 x 16.6 cm for very good quality, and 8.2 x 5.4 inches or 20.9 x 13.8 cm for excellent quality prints.

The Nikon D2H has a native sensitivity range from ISO 200 to ISO 1600, which can be extended to ISO 200-6400. The corresponding ISO settings for the Olympus PEN E-P3 are ISO 200 to ISO 12800 (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.

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 consideration, the E-P3 offers substantially better image quality than the D2H (overall score 11 points higher). The advantage is based on 1.9 bits higher color depth, 0.1 EV in additional dynamic range, and 0.6 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.		Nikon D2H	APS-C	4.0	2464	1632	none	18.9	10.0	352	40
2.		Olympus E-P3	Four Thirds	12.2	4032	3024	1080/60i	20.8	10.1	536	51
3.		Nikon D810	Full Frame	36.2	7360	4912	1080/60p	25.7	14.8	2853	97
4.		Nikon D300S	APS-C	12.2	4288	2848	720/24p	22.5	12.2	787	70
5.		Nikon D700	Full Frame	12.1	4256	2832	none	23.5	12.2	2303	80
6.		Nikon D300	APS-C	12.2	4288	2848	none	22.1	12.0	679	67
7.		Nikon D2Xs	APS-C	12.2	4288	2848	none	22.2	10.9	489	59
8.		Nikon D200	APS-C	10.0	3872	2592	none	22.3	11.5	583	64
9.		Nikon D2X	APS-C	12.2	4288	2848	none	22.1	10.9	476	59
10.		Nikon D1H	APS-C	2.6	2000	1312	none	..	..	..	..
11.		Nikon D1X	APS-C	5.9	3008	1960	none	..	..	..	..
12.		Nikon D1	APS-C	2.6	2000	1312	none	..	..	..	..
13.		Olympus E-PL2	Four Thirds	12.2	4032	3024	720/30p	21.4	10.2	573	55
14.		Olympus E-PL3	Four Thirds	12.2	4032	3024	1080/60i	20.9	10.3	499	52
15.		Olympus E-PL1	Four Thirds	12.2	4032	3024	720/30p	21.5	10.1	487	54
16.		Olympus E-P1	Four Thirds	12.2	4032	3024	720/30p	21.4	10.4	536	55
17.		Olympus E-P2	Four Thirds	12.2	4032	3024	720/30p	21.5	10.4	505	56

Many modern cameras cannot only take still pictures, but also record videos. The E-P3 indeed provides for movie recording, while the D2H does not. The highest resolution format that the E-P3 can use is 1080/60i.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the D2H has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the E-P3 relies on live view and the rear LCD for framing. That said, the E-P3 can be equipped with an optional viewfinder – the VF-3. The following table reports on some other key feature differences and similarities of the Nikon D2H, the Olympus E-P3, 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 D2H	optical	Y	2.5 / 211	fixed	n	1/8000s	8.0/s	n	n
2.		Olympus E-P3	optional	n	3.0 / 614	fixed	Y	1/4000s	3.0/s	Y	Y
3.		Nikon D810	optical	Y	3.2 / 1229	fixed	n	1/8000s	5.0/s	Y	n
4.		Nikon D300S	optical	Y	3.0 / 920	fixed	n	1/8000s	7.0/s	Y	n
5.		Nikon D700	optical	Y	3.0 / 922	fixed	n	1/8000s	8.0/s	Y	n
6.		Nikon D300	optical	Y	3.0 / 922	fixed	n	1/8000s	6.0/s	Y	n
7.		Nikon D2Xs	optical	Y	2.5 / 230	fixed	n	1/8000s	5.0/s	n	n
8.		Nikon D200	optical	Y	2.5 / 230	fixed	n	1/8000s	5.0/s	Y	n
9.		Nikon D2X	optical	Y	2.5 / 235	fixed	n	1/8000s	5.0/s	n	n
10.		Nikon D1H	optical	Y	2.0 / 120	fixed	n	1/16000s	5.0/s	n	n
11.		Nikon D1X	optical	Y	2.0 / 120	fixed	n	1/16000s	3.0/s	n	n
12.		Nikon D1	optical	Y	2.0 / 120	fixed	n	1/16000s	4.5/s	n	n
13.		Olympus E-PL2	optional	n	3.0 / 460	fixed	n	1/4000s	3.0/s	Y	Y
14.		Olympus E-PL3	optional	n	3.0 / 460	tilting	n	1/4000s	5.5/s	n	Y
15.		Olympus E-PL1	optional	n	2.7 / 230	fixed	n	1/2000s	3.0/s	Y	Y
16.		Olympus E-P1	none	n	3.0 / 230	fixed	n	1/4000s	3.0/s	n	Y
17.		Olympus E-P2	optional	n	3.0 / 230	fixed	n	1/4000s	3.0/s	n	Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One feature that is present on the D2H, but is missing on the E-P3 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 D2H writes its imaging data to Compact Flash cards, while the E-P3 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 Nikon D2H and Olympus PEN E-P3 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 D2H	Y	- / -	-	-	-	2.0	-	-	-
2.		Olympus E-P3	Y	stereo / -	-	-	mini	2.0	-	-	-
3.		Nikon D810	Y	stereo / mono	Y	Y	mini	3.0	Y	-	-
4.		Nikon D300S	Y	stereo / mono	Y	-	mini	2.0	-	-	-
5.		Nikon D700	Y	- / -	-	-	mini	2.0	-	-	-
6.		Nikon D300	Y	- / -	-	-	mini	2.0	-	-	-
7.		Nikon D2Xs	Y	- / -	-	-	-	2.0	-	-	-
8.		Nikon D200	Y	- / -	-	-	-	2.0	-	-	-
9.		Nikon D2X	Y	- / -	-	-	-	2.0	-	-	-
10.		Nikon D1H	Y	- / -	-	-	-	FW	-	-	-
11.		Nikon D1X	Y	- / -	-	-	-	FW	-	-	-
12.		Nikon D1	Y	- / -	-	-	-	FW	-	-	-
13.		Olympus E-PL2	Y	stereo / -	-	-	mini	2.0	-	-	-
14.		Olympus E-PL3	Y	stereo / -	-	-	mini	2.0	-	-	-
15.		Olympus E-PL1	Y	stereo / -	-	-	mini	2.0	-	-	-
16.		Olympus E-P1	Y	stereo / -	-	-	mini	2.0	-	-	-
17.		Olympus E-P2	Y	stereo / -	-	-	mini	2.0	-	-	-

Studio photographers will appreciate that the Nikon D2H (unlike the E-P3) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the D2H and the E-P3 have been discontinued, but can regularly be found used on ebay. The D2H was replaced by the Nikon D2Hs, while the E-P3 was followed by the Olympus E-P5. Further information on the features and operation of the D2H and E-P3 can be found, respectively, in the Nikon D2H Manual (free pdf) or the online Olympus E-P3 Manual.

Review summary

So what conclusions can be drawn? Which of the two cameras – the Nikon D2H or the Olympus E-P3 – has the upper hand? Is one clearly better than the other? A synthesis of the relative strong points of each of the models is listed below.

Arguments in favor of the Nikon D2H:

• Easier framing: Has an optical viewfinder for image composition and settings control.
• 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.
• Faster burst: Shoots at higher frequency (8 vs 3 flaps/sec) to capture the decisive moment.
• More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
• Longer lasting: Can take more shots (2900 versus 330) on a single battery charge.
• Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
• 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 July 2003).

Reasons to prefer the Olympus PEN E-P3:

• More detail: Has more megapixels (12.2 vs 4MP), which boosts linear resolution by 71%.
• Better image quality: Scores substantially higher (11 points) in the DXO overall evaluation.
• Richer colors: Generates noticeably more natural colors (1.9 bits more color depth).
• Better low-light sensitivity: Can shoot in dim conditions (0.6 stops ISO advantage).
• Broader imaging potential: Can capture not only stills but also 1080/60i 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 (614k vs 211k dots).
• Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
• More compact: Is smaller (122x69mm vs 158x150mm) and will fit more readily into a bag.
• Less heavy: Has a lower weight (by 701g or 66 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 fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
• More affordable: Was introduced into a lower priced category (77 percent cheaper at launch).
• More modern: Reflects 7 years and 11 months of technical progress since the D2H launch.

If the number of relative strengths (bullet points above) is taken as a guide, the E-P3 is the clear winner of the contest (15 : 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 Nikon D2H and the Olympus E-P3 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 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 D2H or the E-P3 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.		Nikon D2H	..	..	..	+ +	..	..	Jul 2003	3,499	ebay.com
2.		Olympus E-P3	..	83/100	..	74/100	4.5/5	4.5/5	Jun 2011	799	ebay.com
3.		Nikon D810	5/5	..	5/5	86/100	5/5	4.5/5	Jun 2014	3,299	ebay.com
4.		Nikon D300S	5/5	+ +	..	82/100	4/5	4.5/5	Jul 2009	1,799	ebay.com
5.		Nikon D700	..	89/100	..	+ +	4.5/5	4.5/5	Jul 2008	2,999	ebay.com
6.		Nikon D300	..	+ +	..	+ +	5/5	4.5/5	Aug 2007	1,799	ebay.com
7.		Nikon D2Xs	..	..	..	..	..	..	Jun 2006	4,699	ebay.com
8.		Nikon D200	..	+ +	..	+ +	o	..	Nov 2005	1,699	ebay.com
9.		Nikon D2X	..	..	..	+ +	..	..	Sep 2004	4,999	ebay.com
10.		Nikon D1H	..	..	..	+ +	..	..	Feb 2001	4,499	ebay.com
11.		Nikon D1X	..	..	..	+ +	..	..	Feb 2001	5,999	ebay.com
12.		Nikon D1	..	..	..	+ +	..	..	Jun 1999	5,499	ebay.com
13.		Olympus E-PL2	3/5	83/100	..	71/100	4.5/5	4.5/5	Jan 2011	599	ebay.com
14.		Olympus E-PL3	3/5	+ +	..	72/100	4.5/5	4/5	Jun 2011	599	ebay.com
15.		Olympus E-PL1	..	86/100	..	69/100	4/5	4.5/5	Feb 2010	599	ebay.com
16.		Olympus E-P1	..	+	..	66/100	4/5	4.5/5	Jun 2009	799	ebay.com
17.		Olympus E-P2	3/5	+	..	69/100	4/5	4.5/5	Nov 2009	799	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated 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

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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