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Thread: Lens Magnification Calculation

  1. #1 Lens Magnification Calculation 
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    Jun 2012
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    Hi,

    I need to calculate what the overall magnification of a lens system is. First I will describe my setup:

    I have a 200mm focal length objective lens which is 200mm from the object so it produces collimated light. Then this collimated light goes through a 260mm focal length lens (situated at an arbitrary position from the object lens because the beam is collimated so distance shouldn't have any effect). Behind this lens at 260mm sits the camera sensor which will be focussed at infinity to converge the collimated beam. I would like to know the formula to calculate what the magnification factor is for this setup, given that the two lenses have different focal lengths (200mm and 260mm)

    Thanks
    Martin


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