I've been trying to figure this one out for more than an hour now and I have no idea how to calculate this...
You capture a picture of a tree which is standing 3m away from the camera. The focal length of the camera is 10mm. At what distance from the lens will the image be in focus?
I can't seem to find any equitation or logically come to a solution. Thanks.
Possible answers: 1)0.003mm 2)0.233mm 3)5.003mm 4)5.233mm 5)10.033mm