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Olympus E-M10 III versus Nikon D7000

The Olympus OM-D E-M10 Mark III and the Nikon D7000 are two digital cameras that were revealed to the public, respectively, in August 2017 and September 2010. The E-M10 III is a mirrorless interchangeable lens camera, while the D7000 is a DSLR. The cameras are based on a Four Thirds (E-M10 III) and an APS-C (D7000) sensor. The Olympus has a resolution of 15.9 megapixel, whereas the Nikon provides 16.1 MP. Read on to find out how these two cameras compare with respect to their size, their sensors, their features, and their reception by expert reviewers.

Body comparison: Olympus E-M10 III vs Nikon D7000

The side-by-side display below illustrates the physical size and weight of the Olympus E-M10 III and the Nikon D7000. Three successive views from the front, the top, and the rear are shown. All width, height and depth measures are rounded to the nearest millimeter. You can also use the toggle button to switch to a percentage comparison if you prefer that the measures are being expressed in relative terms (in this case, the camera on the left – the E-M10 III – represents the basis or 100 percent across all the size and weight measures).

Snapsort Olympus E-M10 III vs Nikon D7000
Compare E-M10 III versus D7000 top
Compare E-M10 III and D7000 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Nikon D7000 is notably larger (35 percent) than the Olympus E-M10 III. Moreover, the D7000 is substantially heavier (90 percent) than the E-M10 III. It is noteworthy in this context that the D7000 is splash and dust-proof, while the E-M10 III 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 find an overview of optics for the two cameras in the Micro Four Thirds Lens Catalog (E-M10 III) and the Nikon Lens Catalog (D7000). Mirrorless cameras, such as the Olympus E-M10 III, have moreover the advantage that they have a relatively short flange to focal plane distance and can thus use many lenses from other systems via adapters.

Concerning battery life, the E-M10 III gets 330 shots out of its BLS-50 battery, while the D7000 can take 1050 images on a single charge of its EN-EL15 power pack.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you want to switch the focus of the display and review another camera pair, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Olympus E-M10 III» 4.8 in 3.3 in 2.0 in 14.5 oz 330 n Aug 2017 649 i i
Nikon D7000« 5.2 in 4.1 in 3.0 in 27.5 oz 1050 Y Sep 2010 1,499- i
Nikon D7500« » 5.4 in 4.1 in 2.9 in 25.4 oz 950 Y Apr 2017 1,299 i i
Nikon D7100« » 5.4 in 4.2 in 3.0 in 27.0 oz 950 Y Feb 2013 1,199- i
Nikon Df« » 5.7 in 4.3 in 2.6 in 26.8 oz 1400 Y Nov 2013 2,749 i i
Nikon D300S« » 5.8 in 4.5 in 3.2 in 33.1 oz 950 Y Jul 2009 1,799- i
Nikon D90« » 5.2 in 4.1 in 3.0 in 24.8 oz 850 n Aug 2008 1,299- i
Olympus E-PL9« » 4.6 in 2.7 in 1.5 in 13.4 oz 350 n Feb 2018 549 i i
Olympus PEN-F« » 4.9 in 2.8 in 1.5 in 15.1 oz 330 n Jan 2016 1,199 i i
Olympus E-PL8« » 4.5 in 2.6 in 1.5 in 12.6 oz 350 n Sep 2016 549- i
Olympus E-M10 II« » 4.7 in 3.3 in 1.9 in 13.8 oz 320 n Aug 2015 799- i
Olympus E-PL7« » 4.5 in 2.6 in 1.5 in 12.6 oz 350 n Aug 2014 599- i
Olympus E-M10« » 4.7 in 3.2 in 1.8 in 14.0 oz 320 n Jan 2014 699- i
Olympus E-PL6« » 4.4 in 2.5 in 1.5 in 11.5 oz 360 n May 2013 599- i
Olympus E-PL5« » 4.4 in 2.5 in 1.5 in 11.5 oz 360 n Sep 2012 599- i
Olympus E-PL2« » 4.5 in 2.8 in 1.7 in 12.8 oz 280 n Jan 2011 599- i
Panasonic GX85« » 4.8 in 2.8 in 1.7 in 15.0 oz 290 n Apr 2016 799 i i

The price is, of course, an important factor in any camera decision. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The E-M10 III was launched at a markedly lower price (by 57 percent) than the D7000, 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

 

Sensor comparison: Olympus E-M10 III vs Nikon D7000

The size of the sensor inside a digital camera is one of the key determinants of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color depth than smaller pixel-units in a sensor of the same technological generation. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to 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 Olympus E-M10 III features a Four Thirds sensor and the Nikon D7000 an APS-C sensor. The sensor area in the D7000 is 65 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 1.5. The sensor in the E-M10 III has a native 4:3 aspect ratio, while the one in the D7000 offers a 3:2 aspect.

Olympus E-M10 III and Nikon D7000 sensor measures

With 16.1MP, the D7000 offers a higher resolution than the E-M10 III (15.9MP), but the D7000 nevertheless has larger individual pixels (pixel pitch of 4.80μm versus 3.76μm for the E-M10 III) due to its larger sensor. However, the E-M10 III is a much more recent model (by 6 years and 11 months) than the D7000, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the E-M10 III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

E-M10 III versus D7000 MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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. 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 Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Olympus E-M10 III» Four Thirds 15.9 4608 34564K/30p----
Nikon D7000« APS-C 16.1 4928 326410800/24p23.513.9116780
Nikon D7500« » APS-C 20.7 5568 37124K/30p24.314.0148386
Nikon D7100« » APS-C 24.0 6000 40001080/60p24.213.7125683
Nikon Df« » Full Frame 16.2 4928 3280-24.613.1327989
Nikon D300S« » APS-C 12.2 4288 2848720/24p22.512.278770
Nikon D90« » APS-C 12.2 4288 2848720/24p22.712.597773
Olympus E-PL9« » Four Thirds 15.9 4608 34564K/30p----
Olympus PEN-F« » Four Thirds 20.2 5184 38881080/60p23.112.489474
Olympus E-PL8« » Four Thirds 15.9 4608 34561080/30p----
Olympus E-M10 II« » Four Thirds 15.9 4608 34561080/60p23.112.584273
Olympus E-PL7« » Four Thirds 15.9 4608 34561080/30p22.712.487372
Olympus E-M10« » Four Thirds 15.9 4608 34561080/30p22.812.388472
Olympus E-PL6« » Four Thirds 15.9 4608 34561080/30p----
Olympus E-PL5« » Four Thirds 15.9 4608 34561080/30p22.812.388972
Olympus E-PL2« » Four Thirds 12.2 4032 3024720/30p21.410.257355
Panasonic GX85« » Four Thirds 15.8 4592 34484K/30p22.912.666271

Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the E-M10 III provides a higher video resolution than the D7000. It can shoot video footage at 4K/30p, while the Nikon is limited to 10800/24p.

 

Feature comparison: Olympus E-M10 III vs Nikon D7000

Apart from body and sensor, cameras can and do differ across a range of features. For example, the E-M10 III has an electronic viewfinder (2360k dots), while the D7000 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 Olympus E-M10 III and Nikon D7000 in connection with corresponding information for a sample of similar cameras. If needed, the dpreview camera hub, for example, contains further detail on the cameras' specs.

Core Features
  Camera Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec))
Build-in
Flash
(yes/no)
Build-in
Image
Stab
Olympus E-M10 III»2360 n 3.0 1040 tilting Y 4000 8.6 Y Y
Nikon D7000«optical Y 3.0 921 fixed n 8000 6.0 Y n
Nikon D7500« »optical Y 3.2 922 tilting Y 8000 8.0 Y n
Nikon D7100« »optical Y 3.2 1229 fixed n 8000 6.0 Y n
Nikon Df« »optical Y 3.2 921 fixed n 4000 5.5 n n
Nikon D300S« »optical Y 3.0 920 fixed n 8000 7.0 Y n
Nikon D90« »optical Y 3.0 920 fixed n 4000 4.5 Y n
Olympus E-PL9« »- n 3.0 1040 tilting Y 4000 8.6 Y Y
Olympus PEN-F« »2360 n 3.0 1037 swivel Y 8000 10.0 n Y
Olympus E-PL8« »- n 3.0 1037 tilting Y 4000 8.0 n Y
Olympus E-M10 II« »2360 n 3.0 1040 tilting Y 4000 8.0 Y Y
Olympus E-PL7« »- n 3.0 1037 tilting Y 4000 8.0 n Y
Olympus E-M10« »1440 n 3.0 1037 tilting Y 4000 8.0 Y Y
Olympus E-PL6« »- n 3.0 460 tilting Y 4000 8.0 n Y
Olympus E-PL5« »- n 3.0 460 tilting Y 4000 8.0 n Y
Olympus E-PL2« »- n 3.0 460 fixed n 4000 3.0 Y Y
Panasonic GX85« »2765 n 3.0 1040 tilting Y 4000 8.0 Y Y

The E-M10 III is a current model that online retailers, such as amazon, will have in stock. In contrast, the D7000 has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the D7000 was succeeded by the Nikon D7100.

Review summary: Olympus E-M10 III vs Nikon D7000

So what conclusions can be drawn? Is the Olympus E-M10 III better than the Nikon D7000 or vice versa? Below is a summary of the relative strengths of each of the two contestants.

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Reasons to prefer the Olympus OM-D E-M10 Mark III:

  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better video: Provides higher definition movie capture (4K/30p vs 10800/24p).
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • More detailed LCD: Has a higher resolution rear screen (1040k vs 921k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • Faster burst: Shoots at higher frequency (8.6 vs 6 flaps/sec) to capture the decisive moment.
  • More compact: Is smaller (122x84mm vs 132x105mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 370g or 47 percent) and hence easier to carry around.
  • More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
  • Sharper images: Has hand-shake reducing image stabilization build-in.
  • More affordable: Was introduced into a lower priced category (57 percent cheaper at launch).
  • More modern: Reflects 6 years and 11 months of technical progress since the D7000 launch.

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Advantages of the Nikon D7000:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Easier setting verification: Has a control panel on top to check shooting parameters.
  • Faster shutter: Has higher mechanical shutter speed (8000/sec vs 4000/sec) to freeze action.
  • Longer lasting: Gets more shots (1050 versus 330) out of a single battery charge.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • More heavily discounted: Has been around for much longer (launched in September 2010).

If the count of individual advantages (bullet points above) is taken as a guide, the E-M10 III is the clear winner of the match-up (13 : 7 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision.

E-M10 III 13:07 D7000

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains partial and cannot reveal, for example, the handling experience and imaging performance when actually working with the E-M10 III or the D7000. 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. This is why hands-on reviews by experts are important. The table below summarizes the assessments of some of the best known camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). You can find the full text of the reviews by clicking on the site logo in the table header.

Review scores
  Camera cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Olympus E-M10 III»Rec80/1004.5/5-4.5/5 Aug 2017 649 i i
Nikon D7000«-80/1004.5/55/54.5/5 Sep 2010 1,499- i
Nikon D7500« »HiRec86/1005/54.5/54.5/5 Apr 2017 1,299 i i
Nikon D7100« »HiRec85/1004.5/55/54.5/5 Feb 2013 1,199- i
Nikon Df« »-81/1004/54/54/5 Nov 2013 2,749 i i
Nikon D300S« »HiRec82/1004/55/54.5/5 Jul 2009 1,799- i
Nikon D90« »HiRecHiRec4/55/54.5/5 Aug 2008 1,299- i
Olympus E-PL9« »--4.5/5-4/5 Feb 2018 549 i i
Olympus PEN-F« »-82/1004.5/54.5/55/5 Jan 2016 1,199 i i
Olympus E-PL8« »--4.5/5-4/5 Sep 2016 549- i
Olympus E-M10 II« »HiRec80/1005/55/55/5 Aug 2015 799- i
Olympus E-PL7« »Rec-5/54.5/54/5 Aug 2014 599- i
Olympus E-M10« »-80/1005/54.5/55/5 Jan 2014 699- i
Olympus E-PL6« »----- May 2013 599- i
Olympus E-PL5« »HiRec-4.5/54.5/54.5/5 Sep 2012 599- i
Olympus E-PL2« »83/10071/1004.5/54.5/54.5/5 Jan 2011 599- i
Panasonic GX85« »HiRec82/1005/54.5/55/5 Apr 2016 799 i i

The above review scores should be interpreted 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. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

 

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 make a corresponding selection in the search boxes below. An an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool. If you do not see the camera that you are looking for, please send me an email, and I will try to locate and add the respective data to the application.

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