a camera (which has a lens in it) must use that lens to producea real imageof wh

Question

a camera (which has a lens in it) must use that lens to producea real imageof whatever object you're taking a picture of. That's because youneed to project that image onto the film (i.e. you need actuallight rays to hit the film so you can record yourpicture).







Can you use a camera to take a picture of a virtual image? That is,what if you tried to point your camera at a virtual image...couldyou record that image? Why or why not?







I think I may know what this answer has to do with. I know that aregular, flat mirror produces a virtual image. If I stand in frontof a mirror, aim a cell phone camera at your reflection, I can seethat there is a picture. Is this right? Why can this work if it isactually virtual??

Explanation / Answer

I think the answer is that there is depth in mirrors, and it ispossible to capture a virtual image if and only if you are nearerto the mirror/lens than its focal point. If you look at the six cases for convex and concave mirrors, youwill see that they only produce a virtual image when the object isinside the focal point. I'm not sure if that's any help or not, but good luck!

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