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Olympus E-PL9 vs Sony A7R II

The Olympus PEN E-PL9 and the Sony Alpha A7R II are two digital cameras that were revealed to the public, respectively, in February 2018 and June 2015. Both the E-PL9 and the A7R II are mirrorless interchangeable lens cameras that are based on a Four Thirds (E-PL9) and a full frame (A7R II) sensor. The Olympus has a resolution of 15.9 megapixels, whereas the Sony provides 42.2 MP.

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

Headline Specifications
Olympus E-PL9
versus
Sony A7R II
Olympus E-PL9   Sony A7R II
Mirrorless system camera Mirrorless system camera
Micro Four Thirds lenses Sony E mount lenses
15.9 MP – Four Thirds sensor 42.2 MP – Full Frame sensor
4K/30p Video 4K/30p Video
ISO 200-6,400 (100 - 25,600) ISO 100-25,600 (50 - 102,400)
No viewfinder, LCD framing Electronic viewfinder (2400k dots)
3.0" LCD – 1040k dots 3.0" LCD – 1229k dots
Tilting touchscreen Tilting screen (no touchscreen)
8.6 shutter flaps per second 5 shutter flaps per second
In-body stabilizationIn-body stabilization
not weather sealedWeathersealed body
350 shots per battery charge290 shots per battery charge
117 x 68 x 39 mm, 380 g 127 x 96 x 60 mm, 625 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus PEN E-PL9 and the Sony Alpha A7R II? 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.

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Body comparison

The side-by-side display below illustrates the physical size and weight of the Olympus E-PL9 and the Sony A7R II. 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.

The E-PL9 can be obtained in four different colors (black, brown, blue, white), while the A7R II is only available in black.

Size Olympus E-PL9 vs Sony A7R II
Compare E-PL9 versus A7R II top
Comparison E-PL9 or A7R II rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7R II is considerably larger (53 percent) than the Olympus E-PL9. Moreover, the A7R II is substantially heavier (64 percent) than the E-PL9. It is noteworthy in this context that the A7R II is splash and dust-proof, while the E-PL9 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 Micro Four Thirds Lens Catalog (E-PL9) and the Sony FE Lens Catalog (A7R II). 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.

Concerning battery life, the E-PL9 gets 350 shots out of its Olympus BLS-50 battery, while the A7R II can take 290 images on a single charge of its Sony NP-FW50 power pack. The power pack in the A7R II can be charged via the USB port, which can be very convenient when travelling.

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.

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Body Specifications
# image Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Olympus E-PL9 117 mm 68 mm 39 mm 380 g 350 n Feb 2018 599ebay.com
2.
 
Sony A7R II 127 mm 96 mm 60 mm 625 g 290 Y Jun 2015 3,199ebay.com
3.
 
Olympus E-PL10 117 mm 68 mm 39 mm 380 g 350 n Oct 2019 599ebay.com
4.
 
Olympus E-M10 III 122 mm 84 mm 50 mm 410 g 330 n Aug 2017 649ebay.com
5.
 
Olympus E-PL8 115 mm 67 mm 38 mm 357 g 350 n Sep 2016 549ebay.com
6.
 
Olympus E-M10 II 120 mm 83 mm 47 mm 390 g 320 n Aug 2015 649ebay.com
7.
 
Olympus E-M10 119 mm 82 mm 46 mm 396 g 320 n Jan 2014 699ebay.com
8.
 
Olympus E-PL7 115 mm 67 mm 38 mm 357 g 350 n Aug 2014 599ebay.com
9.
 
Olympus E-PL6 111 mm 64 mm 38 mm 325 g 360 n May 2013 599ebay.com
10.
 
Olympus E-PL5 111 mm 64 mm 38 mm 325 g 360 n Sep 2012 599ebay.com
11.
 
Olympus E-PM2 110 mm 64 mm 34 mm 269 g 360 n Sep 2012 499ebay.com
12.
 
Olympus E-PL3 110 mm 64 mm 37 mm 313 g 300 n Jun 2011 599ebay.com
13.
 
Sony A7R IIIA 127 mm 96 mm 74 mm 650 g 650 Y Apr 2021 3,199 amazon.com
14.
 
Sony A7R III 127 mm 96 mm 74 mm 650 g 650 Y Oct 2017 3,199ebay.com
15.
 
Sony A99 II 143 mm 104 mm 76 mm 849 g 490 Y Sep 2016 3,199ebay.com
16.
 
Sony A7S II 127 mm 96 mm 60 mm 627 g 370 Y Sep 2015 2,999ebay.com
17.
 
Sony A7R 127 mm 94 mm 48 mm 465 g 340 Y Oct 2013 2,299ebay.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 listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The E-PL9 was launched at a markedly lower price (by 81 percent) than the A7R II, 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

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. 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 Olympus E-PL9 features a Four Thirds sensor and the Sony A7R II a full frame sensor. The sensor area in the A7R II is 283 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 1.0. The sensor in the E-PL9 has a native 4:3 aspect ratio, while the one in the A7R II offers a 3:2 aspect.

Olympus E-PL9 and Sony A7R II sensor measures

With 42.2MP, the A7R II offers a higher resolution than the E-PL9 (15.9MP), but the A7R II nevertheless has larger individual pixels (pixel pitch of 4.52μm versus 3.76μm for the E-PL9) due to its larger sensor. However, the E-PL9 is a much more recent model (by 2 years and 7 months) than the A7R II, 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 A7R II has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Sony A7R II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7R II for good quality output (200 dots per inch) amounts to 39.8 x 26.5 inches or 101 x 67.4 cm, for very good quality (250 dpi) 31.8 x 21.2 inches or 80.8 x 53.9 cm, and for excellent quality (300 dpi) 26.5 x 17.7 inches or 67.3 x 44.9 cm. The corresponding values for the Olympus E-PL9 are 23 x 17.3 inches or 58.5 x 43.9 cm for good quality, 18.4 x 13.8 inches or 46.8 x 35.1 cm for very good quality, and 15.4 x 11.5 inches or 39 x 29.3 cm for excellent quality prints.

The A7R II has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Olympus PEN E-PL9 has a native sensitivity range from ISO 200 to ISO 6400, which can be extended to ISO 100-25600. The corresponding ISO settings for the Sony Alpha A7R II are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-102400.

In terms of underlying technology, the E-PL9 is build around a CMOS sensor, while the A7R II uses a BSI-CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

E-PL9 versus A7R II MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

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Sensor Characteristics
# image Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Olympus E-PL9 Four Thirds 15.9 4608 34564K/30p23.112.8116274
2.
 
Sony A7R II Full Frame 42.2 7952 53044K/30p26.013.9343498
3.
 
Olympus E-PL10 Four Thirds 15.9 4608 34564K/30p23.313.1132476
4.
 
Olympus E-M10 III Four Thirds 15.9 4608 34564K/30p23.112.8112074
5.
 
Olympus E-PL8 Four Thirds 15.9 4608 34561080/30p23.012.6103073
6.
 
Olympus E-M10 II Four Thirds 15.9 4608 34561080/60p23.112.584273
7.
 
Olympus E-M10 Four Thirds 15.9 4608 34561080/30p22.812.388472
8.
 
Olympus E-PL7 Four Thirds 15.9 4608 34561080/30p22.712.487372
9.
 
Olympus E-PL6 Four Thirds 15.9 4608 34561080/30p22.512.071768
10.
 
Olympus E-PL5 Four Thirds 15.9 4608 34561080/30p22.812.388972
11.
 
Olympus E-PM2 Four Thirds 15.9 4608 34561080/30p22.712.293272
12.
 
Olympus E-PL3 Four Thirds 12.2 4032 30241080/60i20.910.349952
13.
 
Sony A7R IIIA Full Frame 42.2 7952 53044K/30p26.014.73523100
14.
 
Sony A7R III Full Frame 42.2 7952 53044K/30p26.014.73523100
15.
 
Sony A99 II Full Frame 42.2 7952 53044K/30p25.413.4231792
16.
 
Sony A7S II Full Frame 12.0 4240 28324K/30p23.613.3299385
17.
 
Sony A7R Full Frame 36.2 7360 49121080/60p25.614.1274695
Note: DXO values in italics represent estimates based on sensor size and age.
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Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, and both provide the same movie specifications (4K/30p).

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Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the A7R II has an electronic viewfinder (2400k dots), which can be very helpful when shooting in bright sunlight. In contrast, the E-PL9 relies on live view and the rear LCD for framing. The table below summarizes some of the other core capabilities of the Olympus E-PL9 and Sony A7R II in connection with corresponding information for a sample of similar cameras.

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Core Features
# image 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.
 
Olympus E-PL9none n3.0 / 1040 tilting Y 1/4000s 8.6/s Y Y
2.
 
Sony A7R II2400 n3.0 / 1229 tilting n 1/8000s 5.0/s n Y
3.
 
Olympus E-PL10none n3.0 / 1040 tilting Y 1/4000s 8.6/s Y Y
4.
 
Olympus E-M10 III2360 n3.0 / 1040 tilting Y 1/4000s 8.6/s Y Y
5.
 
Olympus E-PL8optional n3.0 / 1037 tilting Y 1/4000s 8.0/s n Y
6.
 
Olympus E-M10 II2360 n3.0 / 1040 tilting Y 1/4000s 8.0/s Y Y
7.
 
Olympus E-M101440 n3.0 / 1037 tilting Y 1/4000s 8.0/s Y Y
8.
 
Olympus E-PL7optional n3.0 / 1037 tilting Y 1/4000s 8.0/s n Y
9.
 
Olympus E-PL6optional n3.0 / 460 tilting Y 1/4000s 8.0/s n Y
10.
 
Olympus E-PL5optional n3.0 / 460 tilting Y 1/4000s 8.0/s n Y
11.
 
Olympus E-PM2optional n3.0 / 460 fixed Y 1/4000s 8.0/s n Y
12.
 
Olympus E-PL3optional n3.0 / 460 tilting n 1/4000s 5.5/s n Y
13.
 
Sony A7R IIIA3686 n3.0 / 2340 tilting Y 1/8000s 10.0/s n Y
14.
 
Sony A7R III3686 n3.0 / 1440 tilting Y 1/8000s 10.0/s n Y
15.
 
Sony A99 II2400 Y3.0 / 1229 full-flex n 1/8000s 12.0/s n Y
16.
 
Sony A7S II2400 n3.0 / 1229 tilting n 1/8000s 5.0/s n Y
17.
 
Sony A7R2400 n3.0 / 1230 tilting n 1/8000s 4.0/s n n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
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One difference between the cameras concerns the presence of an on-board flash. The E-PL9 has one, while the A7R II does not. While the built-in flash of the E-PL9 is not very powerful, it can at times be useful as a fill-in light.

The E-PL9 has an articulated LCD that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in snapping selfies. In contrast, the A7R II does not have a selfie-screen.

The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, both cameras under consideration feature an electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).

The Olympus E-PL9 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 E-PL9 writes its imaging data to SDXC cards, while the A7R II uses SDXC or Memory Stick PRO Duo cards. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.

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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 Olympus PEN E-PL9 and Sony Alpha A7R II and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
# image Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Olympus E-PL9Ystereo / mono--micro2.0Y-Y
2.
 
Sony A7R IIYstereo / monoYYmicro2.0YY-
3.
 
Olympus E-PL10Ystereo / mono--micro2.0Y-Y
4.
 
Olympus E-M10 IIIYstereo / mono--micro2.0Y--
5.
 
Olympus E-PL8Ystereo / mono--micro2.0Y--
6.
 
Olympus E-M10 IIYstereo / mono--micro2.0Y--
7.
 
Olympus E-M10Ystereo / mono--micro2.0Y--
8.
 
Olympus E-PL7Ystereo / mono--micro2.0Y--
9.
 
Olympus E-PL6Ystereo / mono--mini2.0---
10.
 
Olympus E-PL5Ystereo / mono--mini2.0---
11.
 
Olympus E-PM2Ystereo / mono--mini2.0---
12.
 
Olympus E-PL3Ystereo / ---mini2.0---
13.
 
Sony A7R IIIAYstereo / monoYYmicro3.2YYY
14.
 
Sony A7R IIIYstereo / monoYYmicro3.1YYY
15.
 
Sony A99 IIYstereo / monoYYmicro2.0YYY
16.
 
Sony A7S IIYstereo / monoYYmicro2.0YY-
17.
 
Sony A7RYstereo / monoYYmicro2.0YY-
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It is notable that the A7R II has a headphone jack, which makes it possible to attach external headphones and monitor the quality of sound during the recording process. The E-PL9 lacks such a headphone port.

Both the E-PL9 and the A7R II have been discontinued, but can regularly be found used on ebay. The A7R II was replaced by the Sony A7R III, while the E-PL9 was followed by the Olympus E-PL10. Further information on the features and operation of the E-PL9 and A7R II can be found, respectively, in the Olympus E-PL9 Manual (free pdf) or the online Sony A7R II Manual.

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Review summary

So what conclusions can be drawn? Is the Olympus E-PL9 better than the Sony A7R II or vice versa? A synthesis of the relative strong points of each of the models is listed below.

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Reasons to prefer the Olympus PEN E-PL9:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster burst: Shoots at higher frequency (8.6 vs 5 flaps/sec) to capture the decisive moment.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • More compact: Is smaller (117x68mm vs 127x96mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 245g or 39 percent) and hence easier to carry around.
  • Longer lasting: Can take more shots (350 versus 290) on a single battery charge.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • More affordable: Was introduced into a lower priced category (81 percent cheaper at launch).
  • More modern: Reflects 2 years and 7 months of technical progress since the A7R II launch.

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Advantages of the Sony Alpha A7R II:

  • More detail: Has more megapixels (42.2 vs 15.9MP), which boosts linear resolution by 66%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Features bigger pixels on a larger sensor for higher quality imaging.
  • Richer colors: The pixel size advantage translates into images with better, more accurate colors.
  • More dynamic range: Larger pixels capture a wider spectrum of light and dark details.
  • Better low-light sensitivity: Larger pixels means good image quality even under poor lighting.
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • Better sound: Can connect to an external microphone for higher quality sound recording.
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • Easier framing: Has an electronic viewfinder for image composition and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1229k vs 1040k dots).
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • More heavily discounted: Has been around for much longer (launched in June 2015).

If the count of relative strengths (bullet points above) is taken as a measure, the A7R II is the clear winner of the contest (16 : 12 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.

E-PL9 12:16 A7R II

How about other alternatives? Do the specifications of the Olympus E-PL9 and the Sony A7R II place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera listing whether the two cameras rank among the cream of the crop.

In any case, while the specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it says little about, for example, the shooting experience and imaging performance of the E-PL9 and the A7R II in practical situations. 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 hands-on reviews by experts 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.

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Expert Camera Reviews
# image  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Olympus E-PL9..+....4.5/54/5 Feb 2018 599ebay.com
2.
 
Sony A7R II5/5+ +5/590/1005/55/5 Jun 2015 3,199ebay.com
3.
 
Olympus E-PL10....4/577/100..4/5 Oct 2019 599ebay.com
4.
 
Olympus E-M10 III..+5/580/1004.5/54.5/5 Aug 2017 649ebay.com
5.
 
Olympus E-PL8........4.5/54/5 Sep 2016 549ebay.com
6.
 
Olympus E-M10 II4.5/5+ +..80/1005/55/5 Aug 2015 649ebay.com
7.
 
Olympus E-M104/5....80/1005/55/5 Jan 2014 699ebay.com
8.
 
Olympus E-PL74/5+....5/54/5 Aug 2014 599ebay.com
9.
 
Olympus E-PL6............ May 2013 599ebay.com
10.
 
Olympus E-PL53/5+ +....4.5/54.5/5 Sep 2012 599ebay.com
11.
 
Olympus E-PM23/5....77/1005/54.5/5 Sep 2012 499ebay.com
12.
 
Olympus E-PL33/5+ +..72/1004.5/54/5 Jun 2011 599ebay.com
13.
 
Sony A7R IIIA..+ +4/590/1004.5/55/5 Apr 2021 3,199 amazon.com
14.
 
Sony A7R III..+ +4/590/1004.5/55/5 Oct 2017 3,199ebay.com
15.
 
Sony A99 II....4.5/585/1004.5/54.5/5 Sep 2016 3,199ebay.com
16.
 
Sony A7S II5/5+....4.5/55/5 Sep 2015 2,999ebay.com
17.
 
Sony A7R5/5+ +..82/1004.5/55/5 Oct 2013 2,299ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
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Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. 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, 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? 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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    Specifications: Olympus E-PL9 vs Sony A7R II

    Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.

    Camera Specifications
    Camera Model Olympus E-PL9 Sony A7R II
    Camera Type Mirrorless system camera Mirrorless system camera
    Camera Lens Micro Four Thirds lenses Sony E mount lenses
    Launch Date February 2018 June 2015
    Launch Price USD 599 USD 3,199
    Sensor Specs Olympus E-PL9 Sony A7R II
    Sensor Technology CMOS BSI-CMOS
    Sensor Format Four Thirds Sensor Full Frame Sensor
    Sensor Size 17.3 x 13.0 mm 35.9 x 24.0 mm
    Sensor Area 224.9 mm2 861.6 mm2
    Sensor Diagonal 21.6 mm 43.2 mm
    Crop Factor 2.0x 1.0x
    Sensor Resolution 15.9 Megapixels 42.2 Megapixels
    Image Resolution 4608 x 3456 pixels 7952 x 5304 pixels
    Pixel Pitch 3.76 μm 4.52 μm
    Pixel Density 7.08 MP/cm2 4.90 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 4K/30p Video 4K/30p Video
    ISO Setting 200 - 6,400 ISO 100 - 25,600 ISO
    ISO Boost 100 - 25,600 ISO 50 - 102,400 ISO
    Image Processor TruePic VIII BIONZ X
    DXO Sensor Quality (score) .. 98
    DXO Color Depth (bits) .. 26.0
    DXO Dynamic Range (EV) .. 13.9
    DXO Low Light (ISO) .. 3434
    Screen Specs Olympus E-PL9 Sony A7R II
    Viewfinder Type no viewfinder Electronic viewfinder
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.78x
    Viewfinder Resolution 2400k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 1040k dots 1229k dots
    LCD Attachment Tilting screen Tilting screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Olympus E-PL9 Sony A7R II
    Focus System Contrast-detect AF On-Sensor Phase-detect
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/8000s
    Continuous Shooting 8.6 shutter flaps/s 5 shutter flaps/s
    Electronic Shutterup to 1/16000sYES
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium SDXC cards MS or SDXC cards
    Single or Dual Card Slots Single card slot Single card slot
    UHS card support UHS-I UHS-I
    Connectivity Specs Olympus E-PL9 Sony A7R II
    External Flash Hotshoe Hotshoe
    USB Connector USB 2.0 USB 2.0
    HDMI Port micro HDMI micro HDMI
    Microphone Port no MIC socket External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support Wifi built-in Wifi built-in
    Near-Field Communication no NFC NFC built-in
    Bluetooth Support Bluetooth built-in no Bluetooth
    Body Specs Olympus E-PL9 Sony A7R II
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type Olympus BLS-50 Sony NP-FW50
    Battery Life (CIPA)350 shots per charge290 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 117 x 68 x 39 mm
    (4.6 x 2.7 x 1.5 in)
    127 x 96 x 60 mm
    (5.0 x 3.8 x 2.4 in)
    Camera Weight 380 g (13.4 oz) 625 g (22.0 oz)
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