The lowest cost way to take close up pictures is to use a set of close up diopter filters on your lens, such as the four pictured in figure 3.
These filters cost only a few bucks online and do a reasonably good job with making extreme close ups. I bought a package of four filters with diopters (magnification factor) running from + 1 to +10 (figure 3).
These filters simply screw into the front of your prime lens (or zoom lens) and add magnification to the lens. It is sort of the same principle as using a magnifying glass. You screw the filter onto the front of the lens and it magnifies the close-up subject. There are different diopter “powers” in the filter set so that you can increase or decrease the magnification. The main limitation of diopter close-up filters is a very limited amount of focus control and somewhat lower quality images. They are not as convenient to use by any means, in comparison to a true macro lens. However, they do a pretty good job on taking extreme close up pictures and are much lower in cost.
With a diopter filter on your lens it cannot focus sharply on anything farther away than a few inches; therefore, the filter cannot be left on a lens for any other purpose than shooting the macro shots. While these filters can’t possibly give you the same quality edge to edge as a true macro lens (figure 2.30), they do provide the photographer on a budget with a way to make interesting close up pictures without spending a lot of money. Look on the back of your lens’s cap to see the correct size of filter to buy. The filters must match the screw-in filter size of the lens you will use them with.
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