Originally posted by Javaslinger What is the benefit of getting specific macro lens as opposed to shooting macro with any other lens? I see some lenses are zoom and macro.... some aren't....
A lens that is not a macro lens won't shoot macro, plain and simple. Where "macro" is defined as allowing you to shoot extremely "close up" pictures, where the size of the object on the sensor is close to or larger than life size. Since the sensor is about an inch wide, a macro lens would allow you fill the frame with an object that is about an inch wide, like a quarter.
The difference between a macro lens and a non-macro lens of a given focal length is in how close they allow you to focus. So a non-macro 100mm lens might force you to be several feet away from your subject, which won't result in a very "close up" image - the quarter wouldn't come close to filling the frame. A macro 100mm lens might let you focus mere inches away. Same focal length, but the mere fact that you are closer means the image with be far more "close up".
Zoom lenses advertised as "macro" let you focus closer than other zoom lenses, but they usually aren't "true" macro - they won't focus as closely as an actual macro lens. So you won't get as "close up" of a picture as you would with, for example, the DA 35 or D-FA 100 macro lenses. The quarter might fill only half the frame, for instnce.
Now, for lenses that are *not* advertised as macro lenses, you might still be able to shoot close-up if you buy an attachment that helps them focus closer, like the Raynox 150 or 250 lens that clips on to the front. These are not expensive ($50 or less) and work very well. There are even cheaper "closeup lenses) that screw on to the front of a lens like a filter, but they are usually *much* worse in quality, and not *that* much cheaper.