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23 Nov 2019
Image Distance d_i (cm)= 20.8cm
Lens Equation 1/d_o + 1/ d_i = 1/f
The Equation relates the focal length of a thin lens,f, to theobject distance d_o and the image distance d_i. By taking the limitas the object distance d_o goes to infinity. the approximate focallength is equal to the image distance. Estimate the focal length ofthe 200mm lens.
Image Distance d_i (cm)= 20.8cm
Lens Equation 1/d_o + 1/ d_i = 1/f
The Equation relates the focal length of a thin lens,f, to theobject distance d_o and the image distance d_i. By taking the limitas the object distance d_o goes to infinity. the approximate focallength is equal to the image distance. Estimate the focal length ofthe 200mm lens.
Deanna HettingerLv2
22 Jul 2019
