The term macro photography has been coined very recently. Macro photography is a stream of photography which can be compared with close-up photography. It is the art of taking close-up shots to enlarge a small area so that minute details become visible to naked eye.
According to wikipedia, the classical definition of macro photography is:
…” the image projected on the "film plane" (i.e., film or a digital sensor) is close to the same size as the subject.”
In reality the image projected on the film plane can be close, same size or larger as the subject. Using 1:2 macro lenses, one can shoot a photograph where the image is 1/2 of the subject and with 1:1 macro lenses image size becomes equal as the subject.
1:4 magnificent ratio is quite good to focus a subject and print it on 15x10 cm paper so that the image is equal to or larger than the object.
Image courtesy: shotaddict.com
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