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How many Megapixels does the Olympus E-PM1 have?

The Olympus PEN E-PM1 is equipped with a a Four Thirds sensor that offers an image resolution of 12.2 megapixels (MP), or 12.2 million pixels. With its native aspect ratio of 4:3, the sensor has 4 032 horizontal pixels and 3 024 vertical pixels.

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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 12.2 MP?

The maximum print size of the Olympus E-PM1 for good quality output (200 dots per inch) amounts to 20.2 x 15.1 inches or 51.2 x 38.4 cm, for very good quality (250 dpi) 16.1 x 12.1 inches or 41 x 30.7 cm, and for excellent quality (300 dpi) 13.4 x 10.1 inches or 34.1 x 25.6 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.

Sensor specs and performance

The table below compares the sensor specs of the Olympus E-PM1 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-PM1 Four Thirds 12.2 4032 30241080/60i21.010.349952
2.
 
Olympus E-PM2 Four Thirds 15.9 4608 34561080/30p22.712.293272
3.
 
Olympus XZ-2 1/1.7 11.8 3968 29761080/30p20.411.321649
4.
 
Olympus E-P3 Four Thirds 12.2 4032 30241080/60i20.810.153651
5.
 
Olympus E-PL2 Four Thirds 12.2 4032 3024720/30p21.410.257355
6.
 
Olympus E-PL3 Four Thirds 12.2 4032 30241080/60i20.910.349952
7.
 
Olympus XZ-1 1/1.7 10.1 3664 2752720/30p18.810.411734
8.
 
Olympus E-PL1 Four Thirds 12.2 4032 3024720/30p21.510.148754
9.
 
Panasonic GF5 Four Thirds 12.0 4000 30001080/60i20.510.057350
10.
 
Panasonic GF3 Four Thirds 12.0 4000 30001080/60i20.610.145950
11.
 
Panasonic GF2 Four Thirds 12.0 4000 30001080/60i21.210.350654
Further information on the sensor in the Olympus E-PM1 and the camera's operation can be found in the camera manual.

In the United States, the E-PM1 was initially launched in June 2011 at a price of $499.

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Camera to camera comparisons

In case you are interested in seeing how this camera compares to another one, 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 Summary
    Camera Model Olympus E-PM1
    Camera Type Mirrorless system camera
    Camera Lens Micro Four Thirds lenses
    Launch Date June 2011
    Launch Price USD 499
    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 12.2 Megapixels
    Image Resolution 4 032 x 3 024 pixels
    Pixel Pitch 4.29 μm
    Pixel Density 5.42 MP/cm2
    Moiré control Anti-Alias filter
    Movie Capability 1080/60i Video
    ISO Setting 100 - 12 800 ISO
    Image Processor TruePic VI
    DXO Sensor Quality (score) 52
    DXO Color Depth (bits) 21.0
    DXO Dynamic Range (EV) 10.3
    DXO Low Light (ISO) 499
    Screen Specs
    Viewfinder Type Viewfinder optional
    Top-Level Screen no Top Display
    LCD Framing Live View
    LCD Size 3.0 inch
    LCD Resolution 460k dots
    LCD Attachment Fixed screen
    Touch Input No touchscreen
    Shooting Specs
    Focus System Contrast-detect AF
    Manual Focusing Aidno Peaking Feature
    Maximum Shutter Speed 1/4000s
    Continuous Shooting 5.5 shutter flaps/s
    Shutter Life Expectancy100 000 actuations
    Silent Shootingno E-Shutter
    Time Lapse Photographyno Intervalometer
    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 no
    Connectivity Specs
    External Flash Hotshoe
    USB Connector USB 2.0
    HDMI Port mini HDMI
    Wifi Support no Wifi
    Body Specs
    Battery Type BLS-5 power pack
    Battery Life (CIPA)330 shots per charge
    Body Dimensions 110 x 64 x 34 mm
    (4.3 x 2.5 x 1.3 in)
    Camera Weight 265 g (9.3 oz)

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