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How many Megapixels does the Olympus E-M5 III have?

The Olympus OM-D E-M5 Mark III is equipped with a a Four Thirds sensor that offers an image resolution of 20.2 megapixels (MP), or 20.2 million pixels. With its native aspect ratio of 4:3, the sensor has 5 184 horizontal pixels and 3 888 vertical pixels.

A 35mm film slide or negative contains 5-15 MP of useful detail, so that the Olympus E-M5 III can be considered to be a high-resolution camera that outresolves any 35mm film camera.

Moreover, the E-M5 III has the capacity to capture high quality composite images (80MP) 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).

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A high megapixel count makes it possible to crop any captured image substantially or to make very large prints from the image file. On the downside, large megapixel files are slower to transfer and take up more storage space on the computer harddisk. Also, high-resolution imaging requires sharper, more expensive lenses than low-res picture taking.

How large can I print with 20.2 MP?

The maximum print size of the Olympus E-M5 III for good quality output (200 dots per inch) amounts to 25.9 x 19.4 inches or 65.8 x 49.4 cm, for very good quality (250 dpi) 20.7 x 15.6 inches or 52.7 x 39.5 cm, and for excellent quality (300 dpi) 17.3 x 13 inches or 43.9 x 32.9 cm. Few people actually print their images that large on a regular basis, but it is nice to have the option to make very large prints of exceptional shots. Also, as mentioned earlier, a key advantage of high-MP cameras is that it is possible to crop an image ex-post and thereby, for example, change the composition of the capture or zoom in on some detail.

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Sensor specs and performance

The table below compares the sensor specs of the Olympus E-M5 III to those of several similar cameras. In addition to sensor class and megapixel count, DXO values are reported as indicators of the sensor's imaging quality (higher is better). Three aspects are covered: color depth (DXO Portrait), dynamic range (DXO Landscape), and high-ISO noise (DXO Sports). Larger sensor cameras tend to outperform cameras of the same generation that are equipped with a smaller imager. On the other hand, larger sensors are more expensive and require bigger and heavier lenses than smaller light receptors.

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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-M5 III Four Thirds 20.2 5184 38884K/30p23.313.1132476
2.
 
Olympus E-M1 III Four Thirds 20.2 5184 38884K/30p23.313.1135676
3.
 
Olympus E-M10 IV Four Thirds 20.2 5184 38884K/30p23.313.2140276
4.
 
Olympus E-M1X Four Thirds 20.2 5184 38884K/30p23.213.0125475
5.
 
Olympus PEN-F Four Thirds 20.2 5184 38881080/60p23.112.489474
6.
 
Olympus E-M5 II Four Thirds 15.9 4608 34561080/60p23.012.584273
7.
 
Olympus E-M1 Four Thirds 15.9 4608 34561080/30p23.012.775773
8.
 
Olympus E-M5 Four Thirds 15.9 4608 34561080/60i22.812.382671
9.
 
OM System OM-5 Four Thirds 20.2 5184 38884K/30p23.413.4162278
10.
 
Panasonic G95 Four Thirds 20.2 5184 38884K/30p23.213.0127375
11.
 
Panasonic GX8 Four Thirds 20.2 5184 38884K/30p23.512.680675
Note: DXO values in italics represent estimates based on sensor size and age.
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Further information on the sensor in the Olympus E-M5 III and the camera's operation can be found in the camera manual.

In the United States, the E-M5 III was initially launched in October 2019 at a price of $1,199.

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Camera to camera comparisons

In case you are interested in seeing how this camera compares to another one, just make your choice using the following search menu. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications Summary
    Camera Model Olympus E-M5 III
    Camera Type Mirrorless system camera
    Camera Lens Micro Four Thirds lenses
    Launch Date October 2019
    Launch Price USD 1 199
    Sensor Specs
    Sensor Technology CMOS
    Sensor Format Four Thirds Sensor
    Sensor Size 17.3 x 13.0 mm
    Sensor Area 225 mm2
    Sensor Diagonal 21.6 mm
    Crop Factor 2.0x
    Sensor Resolution 20.2 Megapixels
    Image Resolution 5 184 x 3 888 pixels
    Pixel Pitch 3.34 μm
    Pixel Density 8.96 MP/cm2
    Moiré control no AA filter
    Movie Capability 4K/30p Video
    ISO Setting 200 - 25 600 ISO
    ISO Boost 64 - 25 600 ISO
    Image Processor TruePic VIII
    Screen Specs
    Viewfinder Type Electronic viewfinder
    Viewfinder Field of View 100%
    Viewfinder Magnification 0.68x
    Viewfinder Resolution 2360k dots
    Top-Level Screen no Top Display
    LCD Framing Live View
    LCD Size 3.0 inch
    LCD Resolution 1040k dots
    LCD Attachment Swivel screen
    V-logging Friendliness Front-flip possible
    Touch Input Touchscreen
    Shooting Specs
    Focus System On-Sensor Phase-detect
    Manual Focusing AidFocus Peaking
    Maximum Shutter Speed 1/8000s
    Continuous Shooting 10 shutter flaps/s
    Shutter Life Expectancy100 000 actuations
    Silent ShootingElectronic Shutter
    Time Lapse PhotographyIntervalometer Built-in
    Image StabilizationIn-body stabilization
    Fill Flash no On-Board Flash
    Storage Medium SDXC cards
    Single or Dual Card Slots Single card slot
    UHS card support UHS-II
    Connectivity Specs
    External Flash Hotshoe
    USB Connector USB 2.0
    HDMI Port micro HDMI
    Microphone Port External MIC port
    Wifi Support Wifi built-in
    Bluetooth Support Bluetooth built-in
    Body Specs
    Environmental SealingWeathersealed body
    Battery Type Olympus BLS-50 power pack
    Battery Life (CIPA)310 shots per charge
    In-Camera Charging USB charging
    Body Dimensions 125 x 85 x 50 mm
    (4.9 x 3.3 x 2.0 in)
    Camera Weight 414 g (14.6 oz)

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