Often times if you want to do macro photography, you'll have to get a dedicated macro lens, and that comes with a price. There is however a much cheaper solution that can give you better magnification then a lot of the macro lenses you see on the market today. Reversing the lens is easy, cheap, and the results you are just mind blowing.
Understanding the term macro:
A true macro lens is considered to have 1:1 magnification, or life size. Those two numbers represent the reproduction ratio. What that means is if your lens is capable of shooting at 1:1 magnification, your camera will be able to fill the entire picture with an object exactly the same size as your camera's sensor. If it is 2:1, the magnification doubles and now that object will appear twice as big. If it is 1:2, the magnification halves and now that object will only fill half the frame.
Almost all true macro lenses will be able to get 1:1 magnification. A lot of manufactures claim that some of their lenses have macro capabilities, but in reality the maximum magnification you'll be able to achieve is 1:2 or less.
How to get the poor man's macro:
Reversing the lens ...