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Olympus E-P3 versus Olympus E-M10

The Olympus PEN E-P3 and the Olympus OM-D E-M10 are two digital cameras that were announced, respectively, in June 2011 and January 2014. Both the E-P3 and the E-M10 are mirrorless interchangeable lens cameras that are equipped with a Four Thirds sensor. The E-P3 has a resolution of 12.2 megapixel, whereas the E-M10 provides 15.9 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-P3 vs Olympus E-M10

The physical size and weight of the Olympus E-P3 and the Olympus E-M10 are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All width, height and depth measures are rounded to the nearest millimeter. If you prefer, you can also use the toggle button to switch to a comparison in percentage terms (in this case, the camera on the left – the E-P3 – represents the basis or 100 percent across all the size and weight measures).

Compare Olympus E-P3 vs Olympus E-M10
Compare E-P3 versus E-M10 top
Compare E-P3 and E-M10 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-M10 is notably larger (16 percent) than the Olympus E-P3. Moreover, the E-M10 is markedly heavier (7 percent) than the E-P3. In this context, it is worth noting that neither the E-P3 nor the E-M10 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. In this particular case, both cameras feature the same lens mount, so that they can use the same lenses. You can find an overview of suitable optics in the Micro Four Thirds Lens Catalog. Mirrorless cameras, such as the two under consideration, have the additional advantage of having a short flange to focal plane distance, which makes it possible to mount many lenses from other systems onto the camera via adapters.

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)
Camera
Model
Olympus E-P3» 4.8 in 2.7 in 1.3 in 13.0 oz 330 n Jun 2011 799- i Olympus E-P3
Olympus E-M10« 4.7 in 3.2 in 1.8 in 14.0 oz 320 n Jan 2014 699- i Olympus E-M10
Olympus E-M10 II« » 4.7 in 3.3 in 1.9 in 13.8 oz 320 n Aug 2015 799- i Olympus E-M10 II
Olympus E-PL7« » 4.5 in 2.6 in 1.5 in 12.6 oz 350 n Aug 2014 599- i Olympus E-PL7
Olympus E-P5« » 4.8 in 2.7 in 1.5 in 14.8 oz 330 n May 2013 999- i Olympus E-P5
Olympus E-PL6« » 4.4 in 2.5 in 1.5 in 11.5 oz 360 n May 2013 599- i Olympus E-PL6
Olympus E-PL5« » 4.4 in 2.5 in 1.5 in 11.5 oz 360 n Sep 2012 599- i Olympus E-PL5
Olympus E-PL2« » 4.5 in 2.8 in 1.7 in 12.8 oz 280 n Jan 2011 599- i Olympus E-PL2
Olympus E-PL3« » 4.3 in 2.5 in 1.5 in 11.0 oz 300 n Jun 2011 599- i Olympus E-PL3
Olympus E-PM1« » 4.3 in 2.5 in 1.3 in 9.3 oz 330 n Jun 2011 499- i Olympus E-PM1
Olympus E-PL1« » 4.5 in 2.8 in 1.7 in 11.8 oz 290 n Feb 2010 599- i Olympus E-PL1
Olympus E-P1« » 4.8 in 2.8 in 1.4 in 12.5 oz 300 n Jun 2009 799- i Olympus E-P1
Olympus E-P2« » 4.8 in 2.8 in 1.4 in 12.5 oz 300 n Nov 2009 799- i Olympus E-P2
Panasonic GX1« » 4.6 in 2.7 in 1.5 in 11.2 oz 320 n Nov 2011 949- i Panasonic GX1
Panasonic G10« » 4.9 in 3.3 in 2.9 in 13.7 oz 380 n Mar 2010 499- i Panasonic G10

The camera’s price is obviously a critical decision-making factor. 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-M10 was launched at a somewhat lower price (by 13 percent) than the E-P3, 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: Olympus E-P3 vs Olympus E-M10

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. 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.

Both cameras under consideration feature a Four Thirds sensor and have a format factor (sometimes also referred to as "crop factor") of 2.0. Within the spectrum of camera sensors, this places the review cameras among the medium-sized sensor cameras that aim to strike a balance between image quality and portability. Both cameras feature a native aspect ratio (sensor width to sensor height) of 4:3.

Technology-wise, the E-M10 uses a more advanced image processing engine (TruePic VII) than the E-P3 (TruePic VI), with benefits for noise reduction, color accuracy, and processing speed.

Olympus E-P3 and Olympus E-M10 sensor measures

While the two cameras under review share the same sensor size, the E-M10 offers a higher resolution of 15.9 megapixel, compared with 12.2 MP of the E-P3. This megapixel advantage translates into a 14 percent gain in linear resolution. On the other hand, these sensor specs imply that the E-M10 has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.76μm versus 4.29μm for the E-P3). However, it should be noted that the E-M10 is much more recent (by 2 years and 7 months) than the E-P3, and its sensor will have benefitted from technological advances during this time that compensate for the smaller pixel size. Coming back to sensor resolution, it should be mentioned that the E-M10 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

E-P3 versus E-M10 MP

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"). Of the two cameras under consideration, the E-M10 offers substantially better image quality than the E-P3 (overall score 21 points higher). The advantage is based on 2 bits higher color depth, 2.2 EV in additional dynamic range, and 0.7 stops in additional low light sensitivity. 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
Camera
Model
Olympus E-P3» Four Thirds 12.2 4032 30241080/60i20.810.153651Olympus E-P3
Olympus E-M10« Four Thirds 15.9 4608 34561080/30p22.812.388472Olympus E-M10
Olympus E-M10 II« » Four Thirds 15.9 4608 34561080/60p23.112.584273Olympus E-M10 II
Olympus E-PL7« » Four Thirds 15.9 4608 34561080/30p22.712.487372Olympus E-PL7
Olympus E-P5« » Four Thirds 15.9 4608 34561080/30p22.812.489572Olympus E-P5
Olympus E-PL6« » Four Thirds 15.9 4608 34561080/30p----Olympus E-PL6
Olympus E-PL5« » Four Thirds 15.9 4608 34561080/30p22.812.388972Olympus E-PL5
Olympus E-PL2« » Four Thirds 12.2 4032 3024720/30p21.410.257355Olympus E-PL2
Olympus E-PL3« » Four Thirds 12.2 4032 30241080/60i20.910.349952Olympus E-PL3
Olympus E-PM1« » Four Thirds 12.2 4032 30241080/60i21.010.349952Olympus E-PM1
Olympus E-PL1« » Four Thirds 12.2 4032 3024720/30p21.510.148754Olympus E-PL1
Olympus E-P1« » Four Thirds 12.2 4032 3024720/30p21.410.453655Olympus E-P1
Olympus E-P2« » Four Thirds 12.2 4032 3024720/30p21.510.450556Olympus E-P2
Panasonic GX1« » Four Thirds 15.8 4592 34481080/60p20.810.670355Panasonic GX1
Panasonic G10« » Four Thirds 12.0 4000 3000720/30p21.210.141152Panasonic G10

Many modern cameras cannot only take still pictures, but also record videos. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the E-P3 provides a higher frame rate than the E-M10. It can shoot video footage at 1080/60i, while the E-M10 is limited to 1080/30p.

 

Feature comparison: Olympus E-P3 vs Olympus E-M10

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the E-M10 has an electronic viewfinder (1440k dots), which can be very helpful 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 table below summarizes some of the other core capabilities of the Olympus E-P3 and Olympus E-M10 in connection with corresponding information for a sample of similar cameras. If you need more detail on the specs, you can find comprehensive listings, for example, in the dpreview camera hub.

Core Features
  Camera
Model
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
Camera
Model
Olympus E-P3»- n 3.0 614 fixed Y 4000 3.0 Y Y Olympus E-P3
Olympus E-M10«1440 n 3.0 1037 tilting Y 4000 8.0 Y Y Olympus E-M10
Olympus E-M10 II« »2360 n 3.0 1040 tilting Y 4000 8.0 Y Y Olympus E-M10 II
Olympus E-PL7« »- n 3.0 1037 tilting Y 4000 8.0 n Y Olympus E-PL7
Olympus E-P5« »- n 3.0 1037 tilting Y 8000 9.0 Y Y Olympus E-P5
Olympus E-PL6« »- n 3.0 460 tilting Y 4000 8.0 n Y Olympus E-PL6
Olympus E-PL5« »- n 3.0 460 tilting Y 4000 8.0 n Y Olympus E-PL5
Olympus E-PL2« »- n 3.0 460 fixed n 4000 3.0 Y Y Olympus E-PL2
Olympus E-PL3« »- n 3.0 460 tilting n 4000 5.5 n Y Olympus E-PL3
Olympus E-PM1« »- n 3.0 460 fixed n 4000 5.5 n Y Olympus E-PM1
Olympus E-PL1« »- n 2.7 230 fixed n 2000 3.0 Y Y Olympus E-PL1
Olympus E-P1« »- n 3.0 230 fixed n 4000 3.0 n Y Olympus E-P1
Olympus E-P2« »- n 3.0 230 fixed n 4000 3.0 n Y Olympus E-P2
Panasonic GX1« »- n 3.0 460 fixed Y 4000 4.2 Y n Panasonic GX1
Panasonic G10« »202 n 3.0 460 fixed n 4000 2.6 Y n Panasonic G10

Both the E-P3 and the E-M10 write their imaging data to SDXC cards.

Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Type
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
Olympus E-P3»Ystereo---mini2.0---Olympus E-P3
Olympus E-M10«Ystereomono--micro2.0Y--Olympus E-M10
Olympus E-M10 II« »Ystereomono--micro2.0Y--Olympus E-M10 II
Olympus E-PL7« »Ystereomono--micro2.0Y--Olympus E-PL7
Olympus E-P5« »Ystereomono--micro2.0Y--Olympus E-P5
Olympus E-PL6« »Ystereomono--mini2.0---Olympus E-PL6
Olympus E-PL5« »Ystereomono--mini2.0---Olympus E-PL5
Olympus E-PL2« »Ystereo---mini2.0---Olympus E-PL2
Olympus E-PL3« »Ystereo---mini2.0---Olympus E-PL3
Olympus E-PM1« »Ystereomono--mini2.0---Olympus E-PM1
Olympus E-PL1« »Ystereo---mini2.0---Olympus E-PL1
Olympus E-P1« »Ystereo---mini2.0---Olympus E-P1
Olympus E-P2« »Ystereo---mini2.0---Olympus E-P2
Panasonic GX1« »Ystereomono--mini2.0---Panasonic GX1
Panasonic G10« »Ymono---mini2.0---Panasonic G10

Both the E-P3 and the E-M10 have been discontinued, but can regularly be found used on eBay. The E-P3 was replaced by the Olympus E-P5, while the E-M10 was followed by the Olympus E-M10 II.

Review summary: Olympus E-P3 vs Olympus E-M10

So what conclusions can be drawn? Which of the two cameras – the Olympus E-P3 or the Olympus E-M10 – has the upper hand? A synthesis of the relative strong points of each of the models is listed below.


Reasons to prefer the Olympus PEN E-P3:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better video: Provides higher movie framerates (1080/60i versus 1080/30p).
  • More compact: Is smaller (122x69mm vs 119x82mm) and thus needs less room in the bag.
  • More heavily discounted: Has been available for much longer (launched in June 2011).


Advantages of the Olympus OM-D E-M10:

  • More detail: Has more megapixels (15.9 vs 12.2MP), which boosts linear resolution by 14%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Scores substantially higher (21 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (2 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (2.2 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (0.7 stops ISO advantage).
  • Better jpgs: Has a more modern image processing engine (TruePic VII vs TruePic VI).
  • Easier framing: Has an electronic viewfinder for image framing and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1037k vs 614k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Faster burst: Shoots at higher frequency (8 vs 3 flaps/sec) to capture the decisive moment.
  • Easier file upload: Has wifi build in for automatic backup or image transfer to the web.
  • More affordable: Was released into a lower priced segment (13 percent cheaper at launch).
  • More modern: Reflects 2 years and 7 months of technical progress since the E-P3 launch.

If the count of relative strengths (bullet points above) is taken as a measure, the E-M10 is the clear winner of the contest (14 : 4 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-P3 04:14 E-M10

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 E-P3 or the E-M10 handle or perform in practice. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate. This is where reviews by experts come in. The adjacent table relays the overall verdicts of several of the most popular camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). The detailed reviews can be accessed by clicking on the site logo in the table header.

Review Scores
  Camera
Model
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
Olympus E-P3»83/10074/1004.5/54.5/54.5/5 Jun 2011 799- i Olympus E-P3
Olympus E-M10«-80/1005/54.5/55/5 Jan 2014 699- i Olympus E-M10
Olympus E-M10 II« »HiRec80/1005/55/55/5 Aug 2015 799- i Olympus E-M10 II
Olympus E-PL7« »Rec-5/54.5/54/5 Aug 2014 599- i Olympus E-PL7
Olympus E-P5« »HiRec78/1004.5/54.5/55/5 May 2013 999- i Olympus E-P5
Olympus E-PL6« »----- May 2013 599- i Olympus E-PL6
Olympus E-PL5« »HiRec-4.5/54.5/54.5/5 Sep 2012 599- i Olympus E-PL5
Olympus E-PL2« »83/10071/1004.5/54.5/54.5/5 Jan 2011 599- i Olympus E-PL2
Olympus E-PL3« »HiRec72/1004.5/5-4/5 Jun 2011 599- i Olympus E-PL3
Olympus E-PM1« »86/10071/1004.5/5-4.5/5 Jun 2011 499- i Olympus E-PM1
Olympus E-PL1« »86/10069/1004/54.5/54.5/5 Feb 2010 599- i Olympus E-PL1
Olympus E-P1« »Rec66/1004/54/54.5/5 Jun 2009 799- i Olympus E-P1
Olympus E-P2« »Rec69/1004/54.5/54.5/5 Nov 2009 799- i Olympus E-P2
Panasonic GX1« »Rec77/1004.5/54.5/54.5/5 Nov 2011 949- i Panasonic GX1
Panasonic G10« »-70/1004/5-4/5 Mar 2010 499- i Panasonic G10

The review scores listed above should be treated with care, 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 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.

 

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 your choice using the following search menu. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting. If the camera you are interested in is not available, kindly get in touch, and I will try to add information on that model to the database.

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