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In the figure at the right is shown the digital camera with which
I took pictures of the students in my class. Given that I got pictures
of their head and shoulders when they were about 1/2 a meter away
(without zooming), estimate the focal length of my lens. Be sure
to clearly state your assumptions and how you came to the numbers
you estimated, since grading on this problem will be mostly based
on your reasoning, not on your answer |

Page last modified April 16, 2009: OP41