Nikon D2Xs vs Olympus E-420

The Nikon D2Xs and the Olympus E-420 are two digital cameras that were officially introduced, respectively, in June 2006 and March 2008. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-C (D2Xs) and a Four Thirds (E-420) sensor. The Nikon has a resolution of 12.2 megapixels, whereas the Olympus provides 10 MP.

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

Headline Specifications

Nikon D2Xs		Olympus E-420
Digital single lens reflex		Digital single lens reflex
Nikon F mount lenses		Four Thirds lenses
12.2 MP – APS-C sensor		10 MP – Four Thirds sensor
no Video		no Video
ISO 100-800 (800 - 3,200)		ISO 100-1,600
Optical viewfinder		Optical viewfinder
2.5" LCD – 230k dots		2.7" LCD – 215k dots
Fixed screen (not touch-sensitive)		Fixed screen (not touch-sensitive)
5 shutter flaps per second		3.5 shutter flaps per second
Weathersealed body		not weather sealed
3800 shots per battery charge		500 shots per battery charge
158 x 150 x 86 mm, 1252 g		130 x 91 x 53 mm, 440 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D2Xs and the Olympus E-420? 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 Nikon D2Xs and the Olympus E-420. 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 Olympus E-420 is considerably smaller (50 percent) than the Nikon D2Xs. Moreover, the E-420 is substantially lighter (65 percent) than the D2Xs. It is worth mentioning in this context that the D2Xs is splash and dust resistant, while the E-420 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 (D2Xs) and the Four Thirds Lens Catalog (E-420).

Concerning battery life, the D2Xs gets 3800 shots out of its Nikon EN-EL4a battery, while the E-420 can take 500 images on a single charge of its Olympus BLS-1 power pack. As can be seen in the images above, the D2Xs has a battery grip built in. This facilitates image-taking in portrait orientation and gives it additional battery power.

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 D2Xs	158 mm	150 mm	86 mm	1252 g	3800	Y	Jun 2006	US$ 4 699	ebay.com
2.		Olympus E-420	130 mm	91 mm	53 mm	440 g	500	n	Mar 2008	US$ 599	ebay.com
3.		Canon 1D Mark III	156 mm	157 mm	80 mm	1155 g	2200	Y	Feb 2007	US$ 4 499	ebay.com
4.		Nikon D1	157 mm	153 mm	85 mm	1100 g	..	Y	Jun 1999	US$ 5 499	ebay.com
5.		Nikon D1H	157 mm	153 mm	85 mm	1100 g	1200	Y	Feb 2001	US$ 4 499	ebay.com
6.		Nikon D2X	158 mm	150 mm	86 mm	1252 g	3800	Y	Sep 2004	US$ 4 999	ebay.com
7.		Nikon D3	160 mm	157 mm	88 mm	1300 g	4300	Y	Aug 2007	US$ 4 999	ebay.com
8.		Nikon D40X	124 mm	94 mm	64 mm	522 g	520	n	Mar 2007	US$ 729	ebay.com
9.		Nikon D80	132 mm	103 mm	77 mm	668 g	600	n	Aug 2006	US$ 999	ebay.com
10.		Nikon D200	147 mm	113 mm	74 mm	920 g	400	Y	Nov 2005	US$ 1 699	ebay.com
11.		Nikon D300	147 mm	114 mm	74 mm	925 g	1000	Y	Aug 2007	US$ 1 799	ebay.com
12.		Nikon D300S	147 mm	115 mm	81 mm	938 g	950	Y	Jul 2009	US$ 1 799	ebay.com
13.		Olympus E-400	130 mm	91 mm	53 mm	435 g	500	n	Sep 2006	US$ 699	ebay.com
14.		Olympus E-410	130 mm	91 mm	53 mm	435 g	500	n	Mar 2007	US$ 699	ebay.com
15.		Olympus E-450	130 mm	91 mm	53 mm	440 g	500	n	Mar 2009	US$ 499	ebay.com
16.		Olympus E-520	136 mm	92 mm	68 mm	535 g	750	n	May 2008	US$ 699	ebay.com
17.		Olympus E-620	130 mm	94 mm	60 mm	521 g	500	n	Feb 2009	US$ 699	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-420 was launched at a markedly lower price (by 87 percent) than the D2Xs, 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 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 D2Xs features an APS-C sensor and the Olympus E-420 a Four Thirds sensor. The sensor area in the E-420 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 D2Xs has a native 3:2 aspect ratio, while the one in the E-420 offers a 4:3 aspect.

With 12.2MP, the D2Xs offers a higher resolution than the E-420 (10MP), but the D2Xs nevertheless has larger individual pixels (pixel pitch of 5.52μm versus 4.74μm for the E-420) due to its larger sensor. However, the E-420 is a somewhat more recent model (by 1 year and 9 months) than the D2Xs, and its sensor might have benefitted from technological advances during this time that enhance the light gathering capacity of its pixels.

The resolution advantage of the Nikon D2Xs implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the D2Xs for good quality output (200 dots per inch) amounts to 21.4 x 14.2 inches or 54.5 x 36.2 cm, for very good quality (250 dpi) 17.2 x 11.4 inches or 43.6 x 28.9 cm, and for excellent quality (300 dpi) 14.3 x 9.5 inches or 36.3 x 24.1 cm. The corresponding values for the Olympus E-420 are 18.2 x 13.7 inches or 46.3 x 34.7 cm for good quality, 14.6 x 10.9 inches or 37.1 x 27.8 cm for very good quality, and 12.2 x 9.1 inches or 30.9 x 23.2 cm for excellent quality prints.

The Nikon D2Xs has a native sensitivity range from ISO 100 to ISO 800, which can be extended to ISO 800-3200. The corresponding ISO settings for the Olympus E-420 are ISO 100 to ISO 1600 (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.

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). The Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar imaging performance. 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 D2Xs	APS-C	12.2	4288	2848	none	22.2	10.9	489	59
2.		Olympus E-420	Four Thirds	10.0	3648	2736	none	21.5	10.4	527	56
3.		Canon 1D Mark III	APS-H	10.1	3888	2592	none	22.7	11.7	1078	71
4.		Nikon D1	APS-C	2.6	2000	1312	none	..	..	..	..
5.		Nikon D1H	APS-C	2.6	2000	1312	none	..	..	..	..
6.		Nikon D2X	APS-C	12.2	4288	2848	none	22.1	10.9	476	59
7.		Nikon D3	Full Frame	12.1	4256	2832	none	23.5	12.2	2290	81
8.		Nikon D40X	APS-C	10.0	3872	2592	none	22.4	11.4	516	63
9.		Nikon D80	APS-C	10.0	3872	2592	none	22.1	11.2	524	61
10.		Nikon D200	APS-C	10.0	3872	2592	none	22.3	11.5	583	64
11.		Nikon D300	APS-C	12.2	4288	2848	none	22.1	12.0	679	67
12.		Nikon D300S	APS-C	12.2	4288	2848	720/24p	22.5	12.2	787	70
13.		Olympus E-400	Four Thirds	10.0	3648	2736	none	21.0	10.6	127	53
14.		Olympus E-410	Four Thirds	10.0	3648	2736	none	21.1	10.0	494	51
15.		Olympus E-450	Four Thirds	10.0	3648	2736	none	21.5	10.5	512	56
16.		Olympus E-520	Four Thirds	10.0	3648	2736	none	21.4	10.4	548	55
17.		Olympus E-620	Four Thirds	12.2	4032	3024	none	21.3	10.3	536	55
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 D2Xs and the E-420 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 viewfinder in the D2Xs offers a wider field of view (100%) than the one in the E-420 (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the D2Xs has a higher magnification (0.57x vs 0.46x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The adjacent table lists some of the other core features of the Nikon D2Xs and Olympus E-420 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.		Nikon D2Xs	optical	Y	2.5 / 230	fixed	n	1/8000s	5.0/s	n	n
2.		Olympus E-420	optical	n	2.7 / 215	fixed	n	1/4000s	3.5/s	Y	n
3.		Canon 1D Mark III	optical	Y	3.0 / 230	fixed	n	1/8000s	10.0/s	n	n
4.		Nikon D1	optical	Y	2.0 / 120	fixed	n	1/16000s	4.5/s	n	n
5.		Nikon D1H	optical	Y	2.0 / 120	fixed	n	1/16000s	5.0/s	n	n
6.		Nikon D2X	optical	Y	2.5 / 235	fixed	n	1/8000s	5.0/s	n	n
7.		Nikon D3	optical	Y	3.0 / 922	fixed	n	1/8000s	11.0/s	n	n
8.		Nikon D40X	optical	n	2.5 / 230	fixed	n	1/4000s	3.0/s	Y	n
9.		Nikon D80	optical	n	2.5 / 230	fixed	n	1/4000s	3.0/s	Y	n
10.		Nikon D200	optical	Y	2.5 / 230	fixed	n	1/8000s	5.0/s	Y	n
11.		Nikon D300	optical	Y	3.0 / 922	fixed	n	1/8000s	6.0/s	Y	n
12.		Nikon D300S	optical	Y	3.0 / 920	fixed	n	1/8000s	7.0/s	Y	n
13.		Olympus E-400	optical	n	2.5 / 215	fixed	n	1/4000s	3.0/s	Y	n
14.		Olympus E-410	optical	n	2.5 / 215	fixed	n	1/4000s	3.0/s	Y	n
15.		Olympus E-450	optical	n	2.7 / 215	fixed	n	1/4000s	3.5/s	Y	n
16.		Olympus E-520	optical	n	2.7 / 215	fixed	n	1/4000s	3.5/s	Y	Y
17.		Olympus E-620	optical	n	2.7 / 230	swivel	n	1/4000s	4.0/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 D2Xs, but is missing on the E-420 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 D2Xs writes its imaging data to Compact Flash cards, while the E-420 uses Compact Flash or xD Picture cards. The E-420 features dual card slots, which can be very useful in case a memory card fails. In contrast, the D2Xs only has one slot.

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 D2Xs and Olympus E-420 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 D2Xs	Y	- / -	-	-	-	2.0	-	-	-
2.		Olympus E-420	Y	- / -	-	-	-	2.0	-	-	-
3.		Canon 1D Mark III	Y	- / -	-	-	-	2.0	-	-	-
4.		Nikon D1	Y	- / -	-	-	-	FW	-	-	-
5.		Nikon D1H	Y	- / -	-	-	-	FW	-	-	-
6.		Nikon D2X	Y	- / -	-	-	-	2.0	-	-	-
7.		Nikon D3	Y	- / -	-	-	mini	2.0	-	-	-
8.		Nikon D40X	Y	- / -	-	-	-	2.0	-	-	-
9.		Nikon D80	Y	- / -	-	-	-	2.0	-	-	-
10.		Nikon D200	Y	- / -	-	-	-	2.0	-	-	-
11.		Nikon D300	Y	- / -	-	-	mini	2.0	-	-	-
12.		Nikon D300S	Y	stereo / mono	Y	-	mini	2.0	-	-	-
13.		Olympus E-400	Y	- / -	-	-	-	2.0	-	-	-
14.		Olympus E-410	Y	- / -	-	-	-	2.0	-	-	-
15.		Olympus E-450	Y	- / -	-	-	-	2.0	-	-	-
16.		Olympus E-520	Y	- / -	-	-	-	2.0	-	-	-
17.		Olympus E-620	Y	- / -	-	-	-	2.0	-	-	-

Studio photographers will appreciate that the Nikon D2Xs (unlike the E-420) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the D2Xs and the E-420 have been discontinued, but can regularly be found used on ebay. The D2Xs was replaced by the Nikon D3X, while the E-420 does not have a direct successor. Further information on the features and operation of the D2Xs and E-420 can be found, respectively, in the Nikon D2Xs Manual (free pdf) or the online Olympus E-420 Manual.

Review summary

So what conclusions can be drawn? Is there a clear favorite between the Nikon D2Xs and the Olympus E-420? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.

Arguments in favor of the Nikon D2Xs:

• More detail: Offers more megapixels (12.2 vs 10MP) with a 13% higher linear resolution.
• More complete view: Has a viewfinder with a larger field of view (100% vs 95%).
• Larger viewfinder image: Features a viewfinder with a higher magnification (0.57x vs 0.46x).
• 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 (5 vs 3.5 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 (3800 versus 500) 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 on the market for longer (launched in June 2006).

Advantages of the Olympus E-420:

• Larger screen: Has a bigger rear LCD (2.7" vs 2.5") for image review and settings control.
• More compact: Is smaller (130x91mm vs 158x150mm) and will fit more readily into a bag.
• Less heavy: Has a lower weight (by 812g or 65 percent) and is thus easier to take along.
• Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
• Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
• More affordable: Was introduced into a lower priced category (87 percent cheaper at launch).
• More modern: Was introduced somewhat (1 year and 9 months) more recently.

If the count of individual advantages (bullet points above) is taken as a guide, the D2Xs is the clear winner of the match-up (11 : 7 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 D2Xs and the Olympus E-420 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 incomplete and does no justice, for example, to the way the D2Xs or the E-420 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 D2Xs	..	..	..	..	..	..	Jun 2006	US$ 4 699	ebay.com
2.		Olympus E-420	..	85/100	..	+ +	4/5	4.5/5	Mar 2008	US$ 599	ebay.com
3.		Canon 1D Mark III	..	..	..	..	..	..	Feb 2007	US$ 4 499	ebay.com
4.		Nikon D1	..	..	..	+ +	..	..	Jun 1999	US$ 5 499	ebay.com
5.		Nikon D1H	..	..	..	+ +	..	..	Feb 2001	US$ 4 499	ebay.com
6.		Nikon D2X	..	..	..	+ +	..	..	Sep 2004	US$ 4 999	ebay.com
7.		Nikon D3	..	..	..	+ +	5/5	4.5/5	Aug 2007	US$ 4 999	ebay.com
8.		Nikon D40X	..	79/100	..	+ +	4/5	4/5	Mar 2007	US$ 729	ebay.com
9.		Nikon D80	..	+	..	+ +	o	4.5/5	Aug 2006	US$ 999	ebay.com
10.		Nikon D200	..	+ +	..	+ +	o	..	Nov 2005	US$ 1 699	ebay.com
11.		Nikon D300	..	+ +	..	+ +	5/5	4.5/5	Aug 2007	US$ 1 799	ebay.com
12.		Nikon D300S	5/5	+ +	..	82/100	4/5	4.5/5	Jul 2009	US$ 1 799	ebay.com
13.		Olympus E-400	..	85/100	..	..	4/5	4/5	Sep 2006	US$ 699	ebay.com
14.		Olympus E-410	..	86/100	..	+ +	4/5	4.5/5	Mar 2007	US$ 699	ebay.com
15.		Olympus E-450	..	..	..	..	4/5	4/5	Mar 2009	US$ 499	ebay.com
16.		Olympus E-520	..	87/100	..	+ +	4.5/5	4.5/5	May 2008	US$ 699	ebay.com
17.		Olympus E-620	3/5	88/100	..	72/100	4.5/5	5/5	Feb 2009	US$ 699	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. Hence, a score should always be seen in the context of the camera's market launch date and its price, 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

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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