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What kind of photos can be made with standard zoom lens mounted in the reversed position?

panoramic

night

high-speed

macro

Macro photography may be accomplished by mounting a lens in reverse, in front of a normally mounted lens of greater focal length. This method allows most cameras to maintain the full function of electronic and mechanical communication with the normally mounted lens, for features such as open-aperture metering.

Shankar Kumar

3

tsuda wikipedia → Macro photography

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fixed focal length