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Olympus E-M1 II vs Pentax K-S2

The Olympus OM-D E-M1 Mark II and the Pentax K-S2 are two digital cameras that were revealed to the public, respectively, in September 2016 and February 2015. The E-M1 II is a mirrorless interchangeable lens camera, while the K-S2 is a DSLR. The cameras are based on a Four Thirds (E-M1 II) and an APS-C (K-S2) sensor. The Olympus has a resolution of 20.2 megapixels, whereas the Pentax provides 20 MP.

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

Headline Specifications
Olympus E-M1 II versus Pentax K-S2
Olympus E-M1 II Pentax K-S2
Mirrorless system camera Digital single lens reflex
Micro Four Thirds lenses Pentax K mount lenses
20.2 MP, Four Thirds Sensor 20 MP, APS-C Sensor
4K/30p Video 1080/30p Video
ISO 200-25,600 ISO 100-51,200
Electronic viewfinder (2360k dots) Optical viewfinder
3.0 LCD, 1037k dots 3.0 LCD, 921k dots
Swivel touchscreen Swivel screen (not touch-sensitive)
18 shutter flaps per second 5.4 shutter flaps per second
In-body stabilizationIn-body stabilization
Weathersealed bodyWeathersealed body
440 shots per battery charge410 shots per battery charge
134 x 91 x 67 mm, 574 g 123 x 91 x 73 mm, 678 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus OM-D E-M1 Mark II and the Pentax K-S2? 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

An illustration of the physical size and weight of the Olympus E-M1 II and the Pentax K-S2 is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth dimensions are rounded to the nearest millimeter.

The K-S2 can be obtained in six different colors (black, grey, pink, orange, green, white), while the E-M1 II is only available in black.

Size Olympus E-M1 II vs Pentax K-S2
Compare E-M1 II versus K-S2 top
Comparison E-M1 II or K-S2 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax K-S2 is notably smaller (8 percent) than the Olympus E-M1 II. However, the K-S2 is markedly heavier (18 percent) than the E-M1 II. 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. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.

Concerning battery life, the E-M1 II gets 440 shots out of its BLH-1 battery, while the K-S2 can take 410 images on a single charge of its D-LI109 power pack.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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.

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Body Specifications
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Olympus E-M1 II 134 mm 91 mm 67 mm 574 g 440 Y Sep 2016 1,999 i
2.
 
Pentax K-S2 123 mm 91 mm 73 mm 678 g 410 Y Feb 2015 749 i
3.
 
Olympus E-M1 III 134 mm 91 mm 69 mm 580 g 420 Y Feb 2020 1,799 i
4.
 
Olympus PEN-F 125 mm 72 mm 37 mm 427 g 330 n Jan 2016 1,199i
5.
 
Olympus E-M5 II 124 mm 85 mm 45 mm 469 g 310 Y Feb 2015 1,099i
6.
 
Olympus E-M1 130 mm 94 mm 63 mm 497 g 350 Y Sep 2013 1,399i
7.
 
Panasonic G9 137 mm 97 mm 92 mm 658 g 400 Y Nov 2017 1,699 i
8.
 
Panasonic GH5 139 mm 98 mm 87 mm 725 g 410 Y Jan 2017 1,999 i
9.
 
Panasonic G85 128 mm 89 mm 74 mm 505 g 330 Y Sep 2016 899i
10.
 
Panasonic GX8 133 mm 78 mm 63 mm 487 g 330 Y Jul 2015 1,199i
11.
 
Pentax KP 132 mm 101 mm 76 mm 703 g 390 Y Jan 2017 1,099 i
12.
 
Pentax K-70 126 mm 93 mm 74 mm 688 g 410 Y Jun 2016 649 i
13.
 
Pentax K-3 II 131 mm 100 mm 77 mm 800 g 720 Y Apr 2015 1,099 i
14.
 
Pentax K-S1 121 mm 93 mm 70 mm 558 g 410 n Aug 2014 749i
15.
 
Pentax K-3 131 mm 100 mm 77 mm 800 g 560 Y Oct 2013 1,299i
16.
 
Sony A9 127 mm 96 mm 63 mm 673 g 650 Y Apr 2017 4,499i
17.
 
Sony A7 II 127 mm 96 mm 60 mm 599 g 350 Y Nov 2014 1,999i
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

Any camera decision will obviously take relative prices into account. 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 K-S2 was launched at a markedly lower price (by 63 percent) than the E-M1 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.

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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 Olympus E-M1 II features a Four Thirds sensor and the Pentax K-S2 an APS-C sensor. The sensor area in the K-S2 is 63 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-M1 II has a native 4:3 aspect ratio, while the one in the K-S2 offers a 3:2 aspect.

In terms of underlying technology, both cameras are build around CMOS sensors.

Olympus E-M1 II and Pentax K-S2 sensor measures

Despite having a smaller sensor, the Olympus E-M1 II offers a higher resolution of 20.2 megapixels, compared with 20 MP of the Pentax K-S2. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.34μm versus 4.28μm for the K-S2). However, it should be noted that the E-M1 II is a somewhat more recent model (by 1 year and 7 months) than the K-S2, and its sensor might have benefitted from technological advances during this time that partly offset its pixel-size disadvantage. Coming back to sensor resolution, it should be mentioned that neither of the two cameras has an anti-alias filter installed, so they are able to capture all the detail the sensor resolves.

The E-M1 II has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

Unlike the K-S2, the E-M1 II has the capacity to capture high quality composite images (50MP) by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).

The Olympus OM-D E-M1 Mark II has a native sensitivity range from ISO 200 to ISO 25600, which can be extended to ISO 64-25600. The corresponding ISO settings for the Pentax K-S2 are ISO 100 to ISO 51200 (no boost).

E-M1 II versus K-S2 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
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Olympus E-M1 II Four Thirds 20.2 5184 38884K/30p23.712.8131280
2.
 
Pentax K-S2 APS-C 20.0 5472 36481080/30p........
3.
 
Olympus E-M1 III Four Thirds 20.2 5184 38884K/30p........
4.
 
Olympus PEN-F Four Thirds 20.2 5184 38881080/60p23.112.489474
5.
 
Olympus E-M5 II Four Thirds 15.9 4608 34561080/60p23.012.584273
6.
 
Olympus E-M1 Four Thirds 15.9 4608 34561080/30p23.012.775773
7.
 
Panasonic G9 Four Thirds 20.2 5184 38884K/60p........
8.
 
Panasonic GH5 Four Thirds 20.2 5184 38884K/60p23.913.080777
9.
 
Panasonic G85 Four Thirds 15.8 4592 34484K/30p22.812.565671
10.
 
Panasonic GX8 Four Thirds 20.2 5184 38884K/30p23.512.680675
11.
 
Pentax KP APS-C 24.1 6016 40001080/60i........
12.
 
Pentax K-70 APS-C 24.0 6000 40001080/60i........
13.
 
Pentax K-3 II APS-C 24.1 6016 40001080/60i23.613.6110680
14.
 
Pentax K-S1 APS-C 20.0 5472 36481080/30p23.513.0106178
15.
 
Pentax K-3 APS-C 24.1 6016 40001080/60i23.713.4121680
16.
 
Sony A9 Full Frame 24.0 6000 40004K/30p24.913.3351792
17.
 
Sony A7 II Full Frame 24.0 6000 40001080/60p24.913.6244990

Many modern cameras are not only capable of taking still images, but can also record movies. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the E-M1 II provides a higher video resolution than the K-S2. It can shoot video footage at 4K/30p, while the Pentax is limited to 1080/30p.

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Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the E-M1 II has an electronic viewfinder (2360k dots), while the K-S2 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 viewfinders of both cameras offer the same field of view (100%), but the viewfinder of the E-M1 II has a higher magnification than the one of the K-S2 (0.74x vs 0.63x), 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 Olympus E-M1 II and Pentax K-S2 along with similar information for a selection of comparators.

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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)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Olympus E-M1 II2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
2.
 
Pentax K-S2optical n 3.0 921 swivel n 1/6000s 5.4 Y Y
3.
 
Olympus E-M1 III2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
4.
 
Olympus PEN-F2360 n 3.0 1037 swivel Y 1/8000s 10.0 n Y
5.
 
Olympus E-M5 II2360 n 3.0 1037 swivel Y 1/8000s 10.0 n Y
6.
 
Olympus E-M12360 n 3.0 1037 tilting Y 1/8000s 10.0 n Y
7.
 
Panasonic G93680 Y 3.0 1040 swivel Y 1/8000s 20.0 n Y
8.
 
Panasonic GH53680 n 3.2 1620 swivel Y 1/8000s 12.0 n Y
9.
 
Panasonic G852360 n 3.0 1040 swivel Y 1/4000s 9.0 Y Y
10.
 
Panasonic GX82360 n 3.0 1040 swivel Y 1/8000s 10.0 n Y
11.
 
Pentax KPoptical n 3.0 921 tilting n 1/6000s 7.0 Y Y
12.
 
Pentax K-70optical n 3.0 921 swivel n 1/6000s 6.0 Y Y
13.
 
Pentax K-3 IIoptical Y 3.2 1037 fixed n 1/8000s 8.3 n Y
14.
 
Pentax K-S1optical n 3.0 921 fixed n 1/6000s 5.4 Y Y
15.
 
Pentax K-3optical Y 3.2 1037 fixed n 1/8000s 8.3 Y Y
16.
 
Sony A93686 n 3.0 1440 tilting Y 1/8000s 20.0 n Y
17.
 
Sony A7 II2400 n 3.0 1230 tilting n 1/8000s 5.0 n Y

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The E-M1 II has a touchscreen, while the K-S2 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

Both cameras have an articulated rear screen that can be turned to be front-facing. This feature will be particularly appreciated by vloggers and photographers who are interested in taking selfies.

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, the E-M1 II is one of those camera that have an additional 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-M1 II and the Pentax K-S2 both have 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.

Concerning the storage of imaging data, both the E-M1 II and the K-S2 write their files to SDXC cards. The E-M1 II features dual card slots, which can be very useful in case a memory card fails. In contrast, the K-S2 only has one slot. The E-M1 II supports UHS-II cards (on its first slot), while the K-S2 can use UHS-I cards.

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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 OM-D E-M1 Mark II and Pentax K-S2 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
    Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Olympus E-M1 IIYstereomonoYYmicro3.0Y--
2.
 
Pentax K-S2YmonomonoY-micro2.0YY-
3.
 
Olympus E-M1 IIIYstereomonoYYmicro3.1Y-Y
4.
 
Olympus PEN-FYstereomono--micro2.0Y--
5.
 
Olympus E-M5 IIYstereomonoY-micro2.0Y--
6.
 
Olympus E-M1YstereomonoY-micro2.0Y--
7.
 
Panasonic G9YstereomonoYYfull3.0Y-Y
8.
 
Panasonic GH5YstereomonoYYfull3.1Y-Y
9.
 
Panasonic G85YstereomonoY-micro2.0Y--
10.
 
Panasonic GX8YstereomonoY-micro2.0YY-
11.
 
Pentax KPYstereomonoY--2.0Y--
12.
 
Pentax K-70YstereomonoY-mini2.0Y--
13.
 
Pentax K-3 IIYmonomonoYYmini3.0---
14.
 
Pentax K-S1Ystereomono--micro2.0---
15.
 
Pentax K-3YmonomonoYYmini3.0---
16.
 
Sony A9YstereomonoYYmicro2.0YYY
17.
 
Sony A7 IIYstereomonoYYmicro2.0YY-

It is notable that the E-M1 II has a headphone jack, which is not present on the K-S2 This port makes it possible to attach external headphones and monitor the quality of sound during the recording process.

Studio photographers will appreciate that the Olympus E-M1 II (unlike the K-S2) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the E-M1 II and the K-S2 are recent models that are part of the current product line-up. The K-S2 replaced the earlier Pentax K-S1, while the E-M1 II followed on from the Olympus E-M1. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Olympus and Pentax websites.

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Review summary

So what is the bottom line? Which of the two cameras – the Olympus E-M1 II or the Pentax K-S2 – 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.

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Advantages of the Olympus OM-D E-M1 Mark II:

  • High quality composites: Can combine several shots after pixel-shifting its sensor.
  • Better video: Provides higher definition movie capture (4K/30p vs 1080/30p).
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.74x vs 0.63x).
  • More detailed LCD: Has a higher resolution rear screen (1037k vs 921k dots).
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/6000s) to freeze action.
  • Faster burst: Shoots at higher frequency (18 vs 5.4 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Less heavy: Is lighter (by 104g or 15 percent) and hence easier to carry around.
  • More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
  • Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
  • More modern: Is somewhat more recent (announced 1 year and 7 months after the K-S2).

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Arguments in favor of the Pentax K-S2:

  • 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.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • More affordable: Was introduced into a lower priced category (63 percent cheaper at launch).
  • More heavily discounted: Has been on the market for longer (launched in February 2015).

If the count of individual advantages (bullet points above) is taken as a guide, the E-M1 II is the clear winner of the match-up (18 : 9 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. 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-M1 II 18:09 K-S2

How about other alternatives? Do the specifications of the Olympus E-M1 II and the Pentax K-S2 place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best DSLR Camera listings 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 E-M1 II or the K-S2 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 where reviews by experts come in. The table below provides a synthesis of the camera assessments of some of the best known photo-gear review sites (amateurphotographer [AP], cameralabs [CL], 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
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Olympus E-M1 II5/5+ +85/1004.5/54.5/5 Sep 2016 1,999 i
2.
 
Pentax K-S24.5/5....5/54.5/5 Feb 2015 749 i
3.
 
Olympus E-M1 III5/5..83/1004.5/54/5 Feb 2020 1,799 i
4.
 
Olympus PEN-F....82/1004.5/55/5 Jan 2016 1,199i
5.
 
Olympus E-M5 II5/5+ +81/1005/55/5 Feb 2015 1,099i
6.
 
Olympus E-M15/5+ +84/1004.5/54.5/5 Sep 2013 1,399i
7.
 
Panasonic G9..+ +85/1005/55/5 Nov 2017 1,699 i
8.
 
Panasonic GH54.5/5+ +85/1004.5/55/5 Jan 2017 1,999 i
9.
 
Panasonic G85..+ +84/1005/54.5/5 Sep 2016 899i
10.
 
Panasonic GX85/5+82/1004.5/54.5/5 Jul 2015 1,199i
11.
 
Pentax KP4/5..82/1005/54.5/5 Jan 2017 1,099 i
12.
 
Pentax K-704.5/5..79/1004.5/54.5/5 Jun 2016 649 i
13.
 
Pentax K-3 II4.5/5....5/55/5 Apr 2015 1,099 i
14.
 
Pentax K-S14/5....4.5/54/5 Aug 2014 749i
15.
 
Pentax K-34/5..83/1005/55/5 Oct 2013 1,299i
16.
 
Sony A95/5+ +89/1005/55/5 Apr 2017 4,499i
17.
 
Sony A7 II5/5+82/1004.5/55/5 Nov 2014 1,999i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

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, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

Olympus E-M1 II:
Check Amazon price
Pentax K-S2:
Check Amazon price

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-M1 II vs Pentax K-S2

    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-M1 II Pentax K-S2
    Camera Type Mirrorless system camera Digital single lens reflex
    Camera Lens Micro Four Thirds lenses Pentax K mount lenses
    Launch Date September 2016 February 2015
    Launch Price USD 1,999 USD 749
    Sensor Specs Olympus E-M1 II Pentax K-S2
    Sensor Technology CMOS CMOS
    Sensor Format Four Thirds Sensor APS-C Sensor
    Sensor Size 17.3 x 13.0 mm 23.5 x 15.6 mm
    Sensor Area 224.9 mm2 366.6 mm2
    Sensor Diagonal 21.6 mm 28.2 mm
    Crop Factor 2.0x 1.5x
    Sensor Resolution 20.2 Megapixels 20 Megapixels
    Image Resolution 5184 x 3888 pixels 5472 x 3648 pixels
    Pixel Pitch 3.34 μm 4.28 μm
    Pixel Density 8.96 MP/cm2 5.45 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability 4K/30p Video 1080/30p Video
    ISO Setting 200 - 25,600 ISO 100 - 51,200 ISO
    ISO Boost 64 - 25,600 ISO no Enhancement
    Image Processor TruePic VIII PRIME MII
    DXO Sensor Quality (score) 80 ..
    DXO Color Depth (bits) 23.7 ..
    DXO Dynamic Range (EV) 12.8 ..
    DXO Low Light (ISO) 1312 ..
    Screen Specs Olympus E-M1 II Pentax K-S2
    Viewfinder Type Electronic viewfinder Optical viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.74x 0.63x
    Viewfinder Resolution 2360k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 1037k dots 921k dots
    LCD Attachment Swivel screen Swivel screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Olympus E-M1 II Pentax K-S2
    Focus System On-Sensor Phase-detect Phase-detect AF
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/6000s
    Continuous Shooting 18 shutter flaps/s 5.4 shutter flaps/s
    Electronic Shutterup to 1/32000sno E-Shutter
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash no On-Board Flash Build-in Flash
    Storage Medium SDXC cards SDXC cards
    Second Storage Option Dual card slots Single card slot
    UHS card support Single UHS-II UHS-I
    Connectivity Specs Olympus E-M1 II Pentax K-S2
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 3.0 USB 2.0
    HDMI Port micro HDMI micro HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket Headphone port no Headphone port
    Wifi Support Wifi built-in Wifi built-in
    Near-Field Communication no NFC NFC built-in
    Body Specs Olympus E-M1 II Pentax K-S2
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type BLH-1 D-LI109
    Battery Life (CIPA)440 shots per charge410 shots per charge
    Body Dimensions 134 x 91 x 67 mm
    (5.3 x 3.6 x 2.6 in)
    123 x 91 x 73 mm
    (4.8 x 3.6 x 2.9 in)
    Camera Weight 574 g (20.2 oz) 678 g (23.9 oz)

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