Nikon D750 vs Olympus E-3

The Nikon D750 and the Olympus E-3 are two digital cameras that were announced, respectively, in September 2014 and October 2007. Both are DSLR (Digital Single Lens Reflex) cameras that are based on a full frame (D750) and a Four Thirds (E-3) sensor. The Nikon has a resolution of 24.2 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 D750		Olympus E-3
Digital single lens reflex		Digital single lens reflex
Nikon F mount lenses		Four Thirds lenses
24.2 MP – Full Frame sensor		10 MP – Four Thirds sensor
1080/60p Video		no Video
ISO 100-12,800 (50 - 51,200)		ISO 100-3,200
Optical viewfinder		Optical viewfinder
3.2" LCD – 1229k dots		2.5" LCD – 230k dots
Tilting screen (no touchscreen)		Swivel screen (not touch-sensitive)
6 shutter flaps per second		5 shutter flaps per second
Lens stabilization only		In-body stabilization
Weathersealed body		Weathersealed body
1230 shots per battery charge		750 shots per battery charge
141 x 113 x 78 mm, 750 g		142 x 116 x 75 mm, 876 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D750 and the Olympus E-3? 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 physical size and weight of the Nikon D750 and the Olympus E-3 are illustrated 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 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-3 is somewhat larger (3 percent) than the Nikon D750. Moreover, the E-3 is markedly heavier (17 percent) than the D750. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.

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 (D750) and the Four Thirds Lens Catalog (E-3).

Concerning battery life, the D750 gets 1230 shots out of its Nikon EN-EL15 battery, while the E-3 can take 750 images on a single charge of its Olympus BLM-1 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	Street Price
1.		Nikon D750	141 mm	113 mm	78 mm	750 g	1230	Y	Sep 2014	US$ 2 299	ebay.com
2.		Olympus E-3	142 mm	116 mm	75 mm	876 g	750	Y	Oct 2007	US$ 1 699	ebay.com
3.		Leica SL	147 mm	104 mm	39 mm	847 g	400	Y	Oct 2015	US$ 7 449	ebay.com
4.		Nikon D5	160 mm	159 mm	92 mm	1415 g	3780	Y	Jan 2016	US$ 6 499	ebay.com
5.		Nikon D500	147 mm	115 mm	81 mm	860 g	1240	Y	Jan 2016	US$ 1 999	ebay.com
6.		Nikon D600	141 mm	113 mm	82 mm	850 g	900	Y	Sep 2012	US$ 2 099	ebay.com
7.		Nikon D610	141 mm	113 mm	82 mm	850 g	900	Y	Oct 2013	US$ 1 999	ebay.com
8.		Nikon D700	147 mm	123 mm	77 mm	1074 g	1000	Y	Jul 2008	US$ 2 999	ebay.com
9.		Nikon D780	144 mm	116 mm	76 mm	840 g	2260	Y	Jan 2020	US$ 2 299	amazon.com
10.		Nikon D7100	136 mm	107 mm	76 mm	765 g	950	Y	Feb 2013	US$ 1 199	ebay.com
11.		Nikon D7200	136 mm	107 mm	76 mm	765 g	1110	Y	Mar 2015	US$ 1 199	ebay.com
12.		Nikon Df	144 mm	110 mm	67 mm	760 g	1400	Y	Nov 2013	US$ 2 749	ebay.com
13.		Olympus E-1	141 mm	104 mm	81 mm	738 g	750	Y	Jun 2003	US$ 1 699	ebay.com
14.		Olympus E-5	142 mm	117 mm	75 mm	873 g	750	Y	Sep 2010	US$ 1 699	ebay.com
15.		Olympus E-30	142 mm	108 mm	75 mm	701 g	750	n	Nov 2008	US$ 1 299	ebay.com
16.		Olympus E-510	136 mm	92 mm	68 mm	538 g	750	n	Mar 2007	US$ 799	ebay.com
17.		Olympus E-520	136 mm	92 mm	68 mm	535 g	750	n	May 2008	US$ 699	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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Any camera decision will naturally be influenced heavily by the price. 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-3 was launched at a markedly lower price (by 26 percent) than the D750, 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 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. 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 tend to be more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Nikon D750 features a full frame sensor and the Olympus E-3 a Four Thirds sensor. The sensor area in the E-3 is 74 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 2.0. The sensor in the D750 has a native 3:2 aspect ratio, while the one in the E-3 offers a 4:3 aspect.

With 24.2MP, the D750 offers a higher resolution than the E-3 (10MP), but the D750 nevertheless has larger individual pixels (pixel pitch of 5.97μm versus 4.74μm for the E-3) due to its larger sensor. Moreover, the D750 is a much more recent model (by 6 years and 10 months) than the E-3, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels.

The resolution advantage of the Nikon D750 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the D750 for good quality output (200 dots per inch) amounts to 30.1 x 20.1 inches or 76.4 x 51 cm, for very good quality (250 dpi) 24.1 x 16.1 inches or 61.1 x 40.8 cm, and for excellent quality (300 dpi) 20.1 x 13.4 inches or 50.9 x 34 cm. The corresponding values for the Olympus E-3 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 D750 has a native sensitivity range from ISO 100 to ISO 12800, which can be extended to ISO 50-51200. The corresponding ISO settings for the Olympus E-3 are ISO 100 to ISO 3200 (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.

Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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 D750 provides substantially higher image quality than the E-3, with an overall score that is 37 points higher. This advantage is based on 3.2 bits higher color depth, 4 EV in additional dynamic range, and 2.4 stops in additional low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar 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 D750	Full Frame	24.2	6016	4016	1080/60p	24.8	14.5	2956	93
2.		Olympus E-3	Four Thirds	10.0	3648	2736	none	21.6	10.5	571	56
3.		Leica SL	Full Frame	24.0	6000	4000	4K/30p	25.0	13.4	1821	88
4.		Nikon D5	Full Frame	20.7	5588	3712	4K/30p	25.1	12.3	2343	88
5.		Nikon D500	APS-C	20.7	5568	3712	4K/30p	24.0	14.0	1324	83
6.		Nikon D600	Full Frame	24.2	6016	4016	1080/30p	25.1	14.2	2980	94
7.		Nikon D610	Full Frame	24.2	6016	4016	1080/30p	25.1	14.4	2925	94
8.		Nikon D700	Full Frame	12.1	4256	2832	none	23.5	12.2	2303	80
9.		Nikon D780	Full Frame	24.3	6048	4024	4K/30p	25.3	14.3	2877	95
10.		Nikon D7100	APS-C	24.0	6000	4000	1080/60p	24.2	13.7	1256	83
11.		Nikon D7200	APS-C	24.0	6000	4000	1080/60p	24.5	14.6	1333	87
12.		Nikon Df	Full Frame	16.2	4928	3280	none	24.6	13.1	3279	89
13.		Olympus E-1	Four Thirds	4.9	2560	1920	none	20.0	9.7	-145	44
14.		Olympus E-5	Four Thirds	12.2	4032	3024	720/30p	21.6	10.5	519	56
15.		Olympus E-30	Four Thirds	12.2	4032	3024	none	21.3	10.4	530	55
16.		Olympus E-510	Four Thirds	10.0	3648	2736	none	21.2	10.0	442	52
17.		Olympus E-520	Four Thirds	10.0	3648	2736	none	21.4	10.4	548	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 D750 indeed provides movie recording capabilities, while the E-3 does not. The highest resolution format that the D750 can use is 1080/60p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. The D750 and the E-3 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 (100%), but the viewfinder of the D750 has a higher magnification than the one of the E-3 (0.70x vs 0.58x), 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 Nikon D750 and Olympus E-3 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.		Nikon D750	optical	Y	3.2 / 1229	tilting	n	1/4000s	6.0/s	Y	n
2.		Olympus E-3	optical	Y	2.5 / 230	swivel	n	1/8000s	5.0/s	Y	Y
3.		Leica SL	4400	Y	3.0 / 1040	fixed	Y	1/8000s	11.0/s	n	n
4.		Nikon D5	optical	Y	3.2 / 2359	fixed	Y	1/8000s	14.0/s	n	n
5.		Nikon D500	optical	Y	3.2 / 2359	tilting	Y	1/8000s	10.0/s	n	n
6.		Nikon D600	optical	Y	3.0 / 921	fixed	n	1/4000s	5.5/s	Y	n
7.		Nikon D610	optical	Y	3.2 / 921	fixed	n	1/4000s	6.0/s	Y	n
8.		Nikon D700	optical	Y	3.0 / 922	fixed	n	1/8000s	8.0/s	Y	n
9.		Nikon D780	optical	Y	3.2 / 2359	tilting	Y	1/8000s	12.0/s	n	n
10.		Nikon D7100	optical	Y	3.2 / 1229	fixed	n	1/8000s	6.0/s	Y	n
11.		Nikon D7200	optical	Y	3.2 / 1229	fixed	n	1/8000s	6.0/s	Y	n
12.		Nikon Df	optical	Y	3.2 / 921	fixed	n	1/4000s	5.5/s	n	n
13.		Olympus E-1	optical	Y	1.8 / 134	fixed	n	1/4000s	3.0/s	n	n
14.		Olympus E-5	optical	Y	3.0 / 920	swivel	n	1/8000s	5.0/s	Y	Y
15.		Olympus E-30	optical	Y	2.7 / 230	swivel	n	1/8000s	5.0/s	Y	Y
16.		Olympus E-510	optical	n	2.5 / 215	fixed	n	1/4000s	3.0/s	Y	Y
17.		Olympus E-520	optical	n	2.7 / 215	fixed	n	1/4000s	3.5/s	Y	Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One feature that differentiates the E-3 and the D750 is in-body image stabilization (IBIS). The E-3 reduces the risk of handshake-induced blur with all attached lenses, while the D750 offers no blur reduction with lenses that themselves do not provide optical image stabilization.

The Nikon D750 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 D750 writes its imaging data to SDXC cards, while the E-3 uses Compact Flash or xD Picture cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails.

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 D750 and Olympus E-3 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 D750	Y	stereo / mono	Y	Y	mini	2.0	Y	-	-
2.		Olympus E-3	Y	- / -	-	-	-	2.0	-	-	-
3.		Leica SL	Y	stereo / mono	Y	Y	full	3.0	Y	-	-
4.		Nikon D5	Y	stereo / mono	Y	Y	mini	3.0	-	-	-
5.		Nikon D500	Y	stereo / mono	Y	Y	mini	3.0	Y	Y	Y
6.		Nikon D600	Y	mono / mono	Y	Y	mini	2.0	-	-	-
7.		Nikon D610	Y	mono / mono	Y	Y	mini	2.0	-	-	-
8.		Nikon D700	Y	- / -	-	-	mini	2.0	-	-	-
9.		Nikon D780	Y	stereo / mono	Y	Y	mini	3.1	Y	-	Y
10.		Nikon D7100	Y	stereo / mono	Y	Y	mini	2.0	-	-	-
11.		Nikon D7200	Y	stereo / mono	Y	Y	mini	2.0	Y	Y	-
12.		Nikon Df	Y	- / -	-	-	mini	2.0	-	-	-
13.		Olympus E-1	Y	- / -	-	-	-	2.0	-	-	-
14.		Olympus E-5	Y	stereo / -	-	-	mini	2.0	-	-	-
15.		Olympus E-30	Y	- / -	-	-	-	2.0	-	-	-
16.		Olympus E-510	Y	- / -	-	-	-	2.0	-	-	-
17.		Olympus E-520	Y	- / -	-	-	-	2.0	-	-	-

It is notable that the D750 offers wifi support, while the E-3 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.

Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.

Both the D750 and the E-3 have been discontinued, but can regularly be found used on ebay. The E-3 was replaced by the Olympus E-5, while the D750 was followed by the Nikon D780. Further information on the features and operation of the D750 and E-3 can be found, respectively, in the Nikon D750 Manual (free pdf) or the online Olympus E-3 Manual.

Review summary

So what is the bottom line? Which of the two cameras – the Nikon D750 or the Olympus E-3 – has the upper hand? Is one clearly better than the other? Below is a summary of the relative strengths of each of the two contestants.

Advantages of the Nikon D750:

• More detail: Offers more megapixels (24.2 vs 10MP) with a 59% higher linear resolution.
• Better image quality: Scores substantially higher (37 points) in the DXO overall assessment.
• Richer colors: Generates images with noticeably better colors (3.2 bits more color depth).
• More dynamic range: Captures a larger spectrum of light and dark details (4 EV of extra DR).
• Better low-light sensitivity: Requires less light for good images (2.4 stops ISO advantage).
• Broader imaging potential: Can record not only still images but also 1080/60p movies.
• Larger viewfinder image: Features a viewfinder with a higher magnification (0.70x vs 0.58x).
• Larger screen: Has a bigger rear LCD (3.2" vs 2.5") for image review and settings control.
• More detailed LCD: Has a higher resolution rear screen (1229k vs 230k dots).
• Faster burst: Shoots at higher frequency (6 vs 5 flaps/sec) to capture the decisive moment.
• Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
• Less heavy: Is lighter (by 126g or 14 percent) and hence easier to carry around.
• Longer lasting: Can take more shots (1230 versus 750) on a single battery charge.
• Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
• More modern: Reflects 6 years and 10 months of technical progress since the E-3 launch.

Reasons to prefer the Olympus E-3:

• 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 shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
• Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
• More affordable: Was introduced into a lower priced category (26 percent cheaper at launch).
• More heavily discounted: Has been around for much longer (launched in October 2007).

If the count of individual advantages (bullet points above) is taken as a guide, the D750 is the clear winner of the match-up (15 : 6 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 sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape 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 D750 and the Olympus E-3 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 partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the D750 or the E-3. 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 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	Street Price
1.		Nikon D750	5/5	+ +	4/5	90/100	4.5/5	4.5/5	Sep 2014	US$ 2 299	ebay.com
2.		Olympus E-3	..	88/100	..	+ +	o	4/5	Oct 2007	US$ 1 699	ebay.com
3.		Leica SL	4/5	..	4/5	84/100	4.5/5	4/5	Oct 2015	US$ 7 449	ebay.com
4.		Nikon D5	..	..	4/5	89/100	4.5/5	5/5	Jan 2016	US$ 6 499	ebay.com
5.		Nikon D500	5/5	+ +	4.7/5	91/100	4.5/5	5/5	Jan 2016	US$ 1 999	ebay.com
6.		Nikon D600	4/5	+ +	..	87/100	5/5	4.5/5	Sep 2012	US$ 2 099	ebay.com
7.		Nikon D610	4/5	+ +	..	87/100	4.5/5	4.5/5	Oct 2013	US$ 1 999	ebay.com
8.		Nikon D700	..	89/100	..	+ +	4.5/5	4.5/5	Jul 2008	US$ 2 999	ebay.com
9.		Nikon D780	5/5	..	5/5	87/100	4.5/5	4.5/5	Jan 2020	US$ 2 299	amazon.com
10.		Nikon D7100	5/5	+ +	..	85/100	4.5/5	4.5/5	Feb 2013	US$ 1 199	ebay.com
11.		Nikon D7200	4/5	+ +	..	84/100	4.5/5	4.5/5	Mar 2015	US$ 1 199	ebay.com
12.		Nikon Df	4/5	..	..	81/100	4/5	4/5	Nov 2013	US$ 2 749	ebay.com
13.		Olympus E-1	..	..	..	+	o	..	Jun 2003	US$ 1 699	ebay.com
14.		Olympus E-5	4/5	..	..	75/100	4/5	4.5/5	Sep 2010	US$ 1 699	ebay.com
15.		Olympus E-30	..	..	..	71/100	4.5/5	4/5	Nov 2008	US$ 1 299	ebay.com
16.		Olympus E-510	..	89/100	..	+ +	3.5/5	4.5/5	Mar 2007	US$ 799	ebay.com
17.		Olympus E-520	..	87/100	..	+ +	4.5/5	4.5/5	May 2008	US$ 699	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparisons of ratings among very different cameras or across long time periods have little meaning. 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? In case you are interested in seeing how other cameras pair up, just make a corresponding selection in the search boxes 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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