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Olympus E-M1 III vs Panasonic S1

The Olympus OM-D E-M1 Mark III and the Panasonic Lumix DC-S1 are two enthusiast cameras that were officially introduced, respectively, in February 2020 and February 2019. Both the E-M1 III and the S1 are mirrorless interchangeable lens cameras that are based on a Four Thirds (E-M1 III) and a full frame (S1) sensor. The Olympus has a resolution of 20.2 megapixels, whereas the Panasonic provides 24 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 III versus Panasonic S1
Olympus E-M1 III Panasonic S1
Mirrorless system camera Mirrorless system camera
Micro Four Thirds lenses Leica L mount lenses
20.2 MP, Four Thirds Sensor 24 MP, Full Frame Sensor
4K/30p Video 4K/60p Video
ISO 200-25,600 ISO 100-51,200 (50 - 204,800)
Electronic viewfinder (2360k dots) Electronic viewfinder (5760k dots)
3.0 LCD, 1037k dots 3.2 LCD, 2100k dots
Swivel touchscreen Fully flexible touchscreen
18 shutter flaps per second 9 shutter flaps per second
In-body stabilizationIn-body stabilization
Weathersealed bodyWeathersealed body
420 shots per battery charge400 shots per battery charge
134 x 91 x 69 mm, 580 g 149 x 110 x 97 mm, 1017 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus OM-D E-M1 Mark III and the Panasonic Lumix DC-S1? 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 Olympus E-M1 III and the Panasonic S1 are illustrated 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 measures are rounded to the nearest millimeter.

Size Olympus E-M1 III vs Panasonic S1
Compare E-M1 III versus S1 top
Comparison E-M1 III or S1 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Panasonic S1 is notably larger (34 percent) than the Olympus E-M1 III. Moreover, the S1 is substantially heavier (75 percent) than the E-M1 III. 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 III gets 420 shots out of its BLH-1 battery, while the S1 can take 400 images on a single charge of its DMW-BLJ31 power pack. The battery packs of both cameras can be charged via USB, which can be very convenient when travelling.

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

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Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life 1
Weather
Sealing
Camera
Launch 2
Launch
Price (USD)
Street
Price
 
Olympus E-M1 III 134 mm 91 mm 69 mm 580 g 420 Y Feb 2020 1,799 i
 
Panasonic S1 149 mm 110 mm 97 mm 1017 g 400 Y Feb 2019 2,499 i
 
Fujifilm X-H1 140 mm 97 mm 86 mm 673 g 310 Y Feb 2018 1,899 i
 
Leica SL 147 mm 104 mm 39 mm 847 g 400 Y Oct 2015 7,450i
 
Nikon Z6 134 mm 101 mm 67 mm 675 g 310 Y Aug 2018 1,999 i
 
Olympus E-M5 III 125 mm 85 mm 50 mm 414 g 310 Y Oct 2019 1,199 i
 
Olympus E-M1X 144 mm 147 mm 75 mm 997 g 870 Y Jan 2019 2,999 i
 
Olympus E-M1 II 134 mm 91 mm 67 mm 574 g 440 Y Sep 2016 1,999 i
 
Panasonic S1R 149 mm 110 mm 97 mm 1016 g 380 Y Feb 2019 3,699 i
 
Panasonic G90 130 mm 94 mm 77 mm 536 g 290 Y Apr 2019 999 i
 
Panasonic S1H 151 mm 114 mm 110 mm 1052 g 400 Y May 2019 3,999 i
 
Panasonic G9 137 mm 97 mm 92 mm 658 g 400 Y Nov 2017 1,699 i
 
Panasonic GH5 139 mm 98 mm 87 mm 725 g 410 Y Jan 2017 1,999 i
 
Sony A6600 120 mm 67 mm 69 mm 503 g 810 Y Aug 2019 1,399 i
 
Sony A7 III 127 mm 96 mm 74 mm 650 g 610 Y Feb 2018 1,999 i
 
Sony A99 II 143 mm 104 mm 76 mm 849 g 490 Y Sep 2016 3,199 i
 
Sony A99 147 mm 111 mm 78 mm 812 g 500 Y Sep 2012 2,799i
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
(1) Number of images that can be taken on a full battery charge according to the CIPA-standard; (2) Official announcement.

Any camera decision will naturally be influenced heavily by the price. 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-M1 III was launched at a markedly lower price (by 28 percent) than the S1, 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 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-M1 III features a Four Thirds sensor and the Panasonic S1 a full frame sensor. The sensor area in the S1 is 276 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-M1 III has a native 4:3 aspect ratio, while the one in the S1 offers a 3:2 aspect.

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

Olympus E-M1 III and Panasonic S1 sensor measures

With 24MP, the S1 offers a higher resolution than the E-M1 III (20.2MP), but the S1 nevertheless has larger individual pixels (pixel pitch of 5.94μm versus 3.34μm for the E-M1 III) due to its larger sensor. However, the E-M1 III is a somewhat more recent model (by 1 year) than the S1, and its sensor might 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 neither of the two cameras has an anti-alias filter installed, so they are able to capture all the detail the sensor resolves.

The resolution advantage of the Panasonic S1 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the S1 for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 cm. The corresponding values for the Olympus E-M1 III are 25.9 x 19.4 inches or 65.8 x 49.4 cm for good quality, 20.7 x 15.6 inches or 52.7 x 39.5 cm for very good quality, and 17.3 x 13 inches or 43.9 x 32.9 cm for excellent quality prints.

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

Both cameras have the capacity to capture high quality composite images by combining multiple shots after shifting the 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 III 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 Panasonic Lumix DC-S1 are ISO 100 to ISO 51200, with the possibility to increase the ISO range to 50-204800.

E-M1 III versus S1 MP

For many cameras, data on sensor performance has been reported by DXO Mark. 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 table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

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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
 
Olympus E-M1 III Four Thirds 20.2 5184 38884K/30p........
 
Panasonic S1 Full Frame 24.0 6000 40004K/60p25.214.5333395
 
Fujifilm X-H1 APS-C 24.0 6000 40004K/30p........
 
Leica SL Full Frame 24.0 6000 40004K/30p25.013.4182188
 
Nikon Z6 Full Frame 24.3 6048 40244K/30p25.314.3329995
 
Olympus E-M5 III Four Thirds 20.2 5184 38884k/24p........
 
Olympus E-M1X Four Thirds 20.2 5184 38884K/30p........
 
Olympus E-M1 II Four Thirds 20.2 5184 38884K/30p23.712.8131280
 
Panasonic S1R Full Frame 46.7 8368 55844K/60p26.414.13525100
 
Panasonic G90 Four Thirds 20.2 5184 38884K/30p........
 
Panasonic S1H Full Frame 24.0 6000 40006K/30p........
 
Panasonic G9 Four Thirds 20.2 5184 38884K/60p........
 
Panasonic GH5 Four Thirds 20.2 5184 38884K/60p23.913.080777
 
Sony A6600 APS-C 24.0 6000 40004K/30p23.813.4149782
 
Sony A7 III Full Frame 24.0 6000 40004K/30p25.014.7373096
 
Sony A99 II Full Frame 42.2 7952 53044K/30p25.413.4231792
 
Sony A99 Full Frame 24.0 6000 40001080/60p25.014.0155589

Many modern cameras are not only capable of taking still images, but also of capturing video footage. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the S1 provides a faster frame rate than the E-M1 III. It can shoot movie footage at 4K/60p, while the Olympus is limited to 4K/30p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. The two cameras under review are similar with respect to both having an electronic viewfinder. However, the one in the S1 offers a substantially higher resolution than the one in the E-M1 III (5760k vs 2360k dots). The following table reports on some other key feature differences and similarities of the Olympus E-M1 III, the Panasonic S1, and comparable cameras.

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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
 
Olympus E-M1 III2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
 
Panasonic S15760 Y 3.2 2100 full-flex Y 1/8000s 9.0 n Y
 
Fujifilm X-H13690 Y 3.0 1040 full-flex Y 1/8000s 14.0 n Y
 
Leica SL4400 Y 3.0 1040 fixed Y 1/8000s 11.0 n n
 
Nikon Z63690 Y 3.2 2100 tilting Y 1/8000s 12.0 n Y
 
Olympus E-M5 III2360 n 3.0 1040 swivel Y 1/8000s 10.0 n Y
 
Olympus E-M1X2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
 
Olympus E-M1 II2360 n 3.0 1037 swivel Y 1/8000s 18.0 n Y
 
Panasonic S1R5760 Y 3.2 2100 full-flex Y 1/8000s 9.0 n Y
 
Panasonic G902360 n 3.0 1240 swivel Y 1/4000s 9.0 Y Y
 
Panasonic S1H5760 Y 3.2 2330 swivel Y 1/8000s 9.0 n Y
 
Panasonic G93680 Y 3.0 1040 swivel Y 1/8000s 20.0 n Y
 
Panasonic GH53680 n 3.2 1620 swivel Y 1/8000s 12.0 n Y
 
Sony A66002359 n 3.0 922 tilting Y 1/4000s 11.0 n Y
 
Sony A7 III2359 n 3.0 922 tilting Y 1/8000s 10.0 n Y
 
Sony A99 II2400 Y 3.0 1229 full-flex n 1/8000s 12.0 n Y
 
Sony A992359 Y 3.0 1229 full-flex n 1/8000s 6.0 n Y

One feature that is present on the S1, but is missing on the E-M1 III is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.

The E-M1 III 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 S1 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-M1 III and the Panasonic S1 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.

The E-M1 III writes its imaging data to SDXC cards, while the S1 uses SDHC or XQD cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails. Both cameras support UHS-II cards, which provide for Ultra High Speed data transfer of up to 312 MB/s (the second slot of the E-M1 III supports only UHS-I, though).

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 III and Panasonic Lumix DC-S1 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
 
Olympus E-M1 IIIYstereomonoYYmicro3.1Y-Y
 
Panasonic S1YstereomonoYYfull3.1Y-Y
 
Fujifilm X-H1YstereomonoY-micro3.0Y--
 
Leica SLYstereomonoYYfull3.0Y--
 
Nikon Z6YstereomonoYYmicro3.1Y-Y
 
Olympus E-M5 IIIYstereomonoY-micro2.0Y-Y
 
Olympus E-M1XYstereomonoYYmicro3.0Y-Y
 
Olympus E-M1 IIYstereomonoYYmicro3.0Y--
 
Panasonic S1RYstereomonoYYfull3.1Y-Y
 
Panasonic G90YstereomonoYYmicro2.0Y-Y
 
Panasonic S1HYstereomonoYYfull3.1Y-Y
 
Panasonic G9YstereomonoYYfull3.0Y-Y
 
Panasonic GH5YstereomonoYYfull3.1Y-Y
 
Sony A6600YstereomonoYYYES2.0YYY
 
Sony A7 IIIYstereomonoYYmicro3.1YYY
 
Sony A99 IIYstereomonoYYmicro2.0YYY
 
Sony A99YstereomonoYYmini2.0---

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

Both the E-M1 III and the S1 are recent models that are part of the current product line-up. The E-M1 III replaced the earlier Olympus E-M1 II, while the S1 does not have a direct predecessor. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Olympus and Panasonic websites.

Review summary

So what is the bottom line? Is the Olympus E-M1 III better than the Panasonic S1 or vice versa? Below is a summary of the relative strengths of each of the two contestants.

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Arguments in favor of the Olympus OM-D E-M1 Mark III:

  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.83x vs 0.78x).
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster burst: Shoots at higher frequency (18 vs 9 flaps/sec) to capture the decisive moment.
  • More compact: Is smaller (134x91mm vs 149x110mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 437g or 43 percent) and hence easier to carry around.
  • More affordable: Was introduced into a lower priced category (28 percent cheaper at launch).
  • More modern: Is somewhat more recent (announced 1 year after the S1).

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Advantages of the Panasonic Lumix DC-S1:

  • More detail: Has more megapixels (24 vs 20.2MP), which boosts linear resolution by 11%.
  • 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 video: Provides higher movie framerates (4K/60p versus 4K/30p).
  • More detailed viewfinder: Has higher resolution electronic viewfinder (5760k vs 2360k dots).
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (2100k vs 1037k dots).
  • More solid recording: Has a full-sized HDMI port for a sturdy connection to an external recorder.
  • More heavily discounted: Has been on the market for longer (launched in February 2019).

If the number of relative strengths (bullet points above) is taken as a guide, the S1 is the clear winner of the contest (12 : 8 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding on a new camera. A professional wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

E-M1 III 08:12 S1

How about other alternatives? Do the specifications of the Olympus E-M1 III and the Panasonic S1 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 remains incomplete and does no justice, for example, to the way the E-M1 III or the S1 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.

Expert reviews

This is why expert reviews are important. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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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Review Scores
  Camera
Model
camera
  labs  
dp
review  
ephoto
  zine  
imaging
resource
photography
  blog  
Camera
Launch
Launch
Price (USD)
Street
Price
 
Olympus E-M1 III..83/1004.5/5..4/5 Feb 2020 1,799 i
 
Panasonic S1+ +88/1004.5/5..4/5 Feb 2019 2,499 i
 
Fujifilm X-H1+86/1004.5/5..4.5/5 Feb 2018 1,899 i
 
Leica SL..84/1004.5/54/54/5 Oct 2015 7,450i
 
Nikon Z6....4.5/54.5/55/5 Aug 2018 1,999 i
 
Olympus E-M5 III+82/1004.5/55/54.5/5 Oct 2019 1,199 i
 
Olympus E-M1Xo..4.5/55/5.. Jan 2019 2,999 i
 
Olympus E-M1 II+ +85/1004.5/55/54.5/5 Sep 2016 1,999 i
 
Panasonic S1R..89/1004.5/55/54.5/5 Feb 2019 3,699 i
 
Panasonic G90+83/1004.5/54.5/54.5/5 Apr 2019 999 i
 
Panasonic S1H..90/100...... May 2019 3,999 i
 
Panasonic G9+ +85/1005/55/55/5 Nov 2017 1,699 i
 
Panasonic GH5+ +85/1004.5/55/55/5 Jan 2017 1,999 i
 
Sony A6600+83/1004.5/5..4/5 Aug 2019 1,399 i
 
Sony A7 III+ +89/1005/55/55/5 Feb 2018 1,999 i
 
Sony A99 II..85/1004.5/54.5/54.5/5 Sep 2016 3,199 i
 
Sony A99..84/1004.5/5o4.5/5 Sep 2012 2,799i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated 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. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.

Olympus E-M1 III:
Check Amazon price
Panasonic S1:
Check Amazon price

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. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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    Specifications: Olympus E-M1 III vs Panasonic S1

    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 III Panasonic S1
    Camera Type Mirrorless system camera Mirrorless system camera
    Camera Lens Micro Four Thirds lenses Leica L mount lenses
    Launch Date February 2020 February 2019
    Launch Price USD 1,799 USD 2,499
    Sensor Specs Olympus E-M1 III Panasonic S1
    Sensor Technology CMOS CMOS
    Sensor Format Four Thirds Sensor Full Frame Sensor
    Sensor Size 17.3 x 13.0 mm 35.6 x 23.8 mm
    Sensor Area 224.9 mm2 847.28 mm2
    Sensor Diagonal 21.6 mm 42.8 mm
    Crop Factor 2.0x 1.0x
    Sensor Resolution 20.2 Megapixels 24 Megapixels
    Image Resolution 5184 x 3888 pixels 6000 x 4000 pixels
    Pixel Pitch 3.34 μm 5.94 μm
    Pixel Density 8.96 MP/cm2 2.83 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability 4K/30p Video 4K/60p Video
    ISO Setting 200 - 25,600 ISO 100 - 51,200 ISO
    ISO Boost 64 - 25,600 ISO 50 - 204,800 ISO
    Image Processor TruePic IX Venus
    DXO Sensor Quality (score) .. 95
    DXO Color Depth (bits) .. 25.2
    DXO Dynamic Range (EV) .. 14.5
    DXO Low Light (ISO) .. 3333
    Screen Specs Olympus E-M1 III Panasonic S1
    Viewfinder Type Electronic viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.83x 0.78x
    Viewfinder Resolution 2360k dots 5760k dots
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.2inch
    LCD Resolution 1037k dots 2100k dots
    LCD Attachment Swivel screen Fully flexible screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs Olympus E-M1 III Panasonic S1
    Focus System On-Sensor Phase-detect Contrast-detect AF
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/8000s
    Continuous Shooting 18 shutter flaps/s 9 shutter flaps/s
    Shutter Life Expectancy400 000 actuations400 000 actuations
    Electronic Shutterup to 1/32000sup to 1/8000s
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image StabilizationIn-body stabilizationIn-body stabilization
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium SDXC cards SDXC or XQD cards
    Second Storage Option Dual card slots Dual card slots
    UHS card support Single UHS-II UHS-II
    Connectivity Specs Olympus E-M1 III Panasonic S1
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket PC Sync socket
    USB Connector USB 3.1 USB 3.1
    HDMI Port micro HDMI full HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket Headphone port Headphone port
    Wifi Support Wifi built-in Wifi built-in
    Bluetooth Support Bluetooth built-in Bluetooth built-in
    Body Specs Olympus E-M1 III Panasonic S1
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type BLH-1 DMW-BLJ31
    Battery Life (CIPA)420 shots per charge400 shots per charge
    In-Camera Charging USB charging USB charging
    Body Dimensions 134 x 91 x 69 mm
    (5.3 x 3.6 x 2.7 in)
    149 x 110 x 97 mm
    (5.9 x 4.3 x 3.8 in)
    Camera Weight 580 g (20.5 oz) 1017 g (35.9 oz)

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