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What is the crop factor of the Olympus E-420?

The Olympus E-420 is equipped with a Four Thirds sensor, whose diagonal measures 21.6mm. The sensor has a crop factor (or format factor, or focal length multiplier) of 2.0.

The crop factor is defined as the ratio of the 35mm full-frame film diagonal to the diagonal of a digital sensor. This number indicates how a lens behaves in relation to the size of the image sensor.

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Sensor size comparison with a film slide

With a crop factor of 2.0, the sensor in the Olympus E-420 is smaller than the receptor area of a 35mm film slide or negative. As a result, a lens that is attached to the Olympus E-420 will offer a narrower angle of view and provide deeper depth of field than a lens of similar focal length and aperture on a film camera. The equivalent focal length is obtained by multiplying the actual focal length of the lens with the crop factor. For example, a 25mm lens on the Olympus E-420 will provide the same angle of view and depth of field as a 50mm normal lens on a film camera (25mm * 2.0 = 50mm).

Olympus E-420 and Credit Card sensor measures
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Sensor specs and performance

The table below compares the sensor specs of the Olympus E-420 to those of several similar cameras. The reported DXO values are indicators of the sensor's imaging quality (higher is better), covering 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-420 Four Thirds 10.0 3648 2736none21.510.452756
2.
 
Nikon D40X APS-C 10.0 3872 2592none22.411.451663
3.
 
Nikon D60 APS-C 10.0 3872 2592none22.511.456265
4.
 
Nikon D3000 APS-C 10.0 3872 2592none22.311.156362
5.
 
Olympus E-400 Four Thirds 10.0 3648 2736none21.010.612753
6.
 
Olympus E-410 Four Thirds 10.0 3648 2736none21.110.049451
7.
 
Olympus E-450 Four Thirds 10.0 3648 2736none21.510.551256
8.
 
Olympus E-520 Four Thirds 10.0 3648 2736none21.410.454855
9.
 
Olympus E-600 Four Thirds 12.2 4032 3024none21.510.354155
10.
 
Olympus E-620 Four Thirds 12.2 4032 3024none21.310.353655
11.
 
Panasonic L10 Four Thirds 10.0 3648 2736none21.310.842955
Note: DXO values in italics represent estimates based on sensor size and age.
Further information on the sensor in the Olympus E-420 and the camera's operation can be found in the camera manual.

In the United States, the E-420 was initially launched in March 2008 at a price of $599.

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Camera to camera comparisons

In case you would like to check on the differences and similarities with other camera models, just make a corresponding selection in the search boxes below. An 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 Summary
    Camera Model Olympus E-420
    Camera Type Digital single lens reflex
    Camera Lens Four Thirds lenses
    Launch Date March 2008
    Launch Price USD 599
    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 10 Megapixels
    Image Resolution 3 648 x 2 736 pixels
    Pixel Pitch 4.74 μm
    Pixel Density 4.44 MP/cm2
    Moiré control Anti-Alias filter
    Movie Capability no Video
    ISO Setting 100 - 1 600 ISO
    Image Processor TruePic III
    DXO Sensor Quality (score) 56
    DXO Color Depth (bits) 21.5
    DXO Dynamic Range (EV) 10.4
    DXO Low Light (ISO) 527
    Screen Specs
    Viewfinder Type Optical viewfinder
    Viewfinder Field of View 95%
    Viewfinder Magnification 0.46x
    Top-Level Screen no Top Display
    LCD Framing Live View
    LCD Size 2.7 inch
    LCD Resolution 215k dots
    LCD Attachment Fixed screen
    Touch Input No touchscreen
    Shooting Specs
    Focus System Phase-detect AF
    Manual Focusing Aidno Peaking Feature
    Maximum Shutter Speed 1/4000s
    Continuous Shooting 3.5 shutter flaps/s
    Shutter Life Expectancy100 000 actuations
    Silent Shootingno E-Shutter
    Time Lapse Photographyno Intervalometer
    Fill Flash Built-in Flash
    Storage Medium CF or XD cards
    Single or Dual Card Slots Dual card slots
    Connectivity Specs
    External Flash Hotshoe
    USB Connector USB 2.0
    HDMI Port no HDMI
    Wifi Support no Wifi
    Body Specs
    Battery Type Olympus BLS-1 power pack
    Battery Life (CIPA)500 shots per charge
    Body Dimensions 130 x 91 x 53 mm
    (5.1 x 3.6 x 2.1 in)
    Camera Weight 440 g (15.5 oz)

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