Crop factor

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{{Glossary|The '''crop factor''' is the ratio between the size of the [[CCD]] sensor in your camera and the size of a typical 35mm film frame.|1}}
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The '''crop factor''' or '''focal length multiplier''' is {{Glossary|the ratio between the size of the [[CCD]] sensor in your camera and the size of a typical 35mm film frame.|1}}
  
 
Usually CCDs are smaller, so the '''crop factor''' for a pocket camera can
 
Usually CCDs are smaller, so the '''crop factor''' for a pocket camera can

Latest revision as of 00:26, 28 February 2008

The crop factor or focal length multiplier is the ratio between the size of the CCD sensor in your camera and the size of a typical 35mm film frame.

Usually CCDs are smaller, so the crop factor for a pocket camera can be around 6 and the crop factor for a DSLR is usually around 1.5. Some DSLRs have a 35mm size sensor so the factor for these is 1.

Alternatively it is easy to calculate as the ratio between the actual Focal Length and the 35mm equivalent focal length of the camera. Those two values can be found on the specification page of any digital camera where the CCD/CMOS size is harder to find

External link: The digital crop factor explained

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