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This is some footage shot using a Canon 18-200mm Lens revered using a reversing ring on a Canon 550D HDSLR camera. This is just a short sample of some macro footage that is obtainable with this setup. I used this lens setup form about 2 years and it works great as you can use the zoom to adjust focus, however takes a little practice. Any 18-200mm lens will work in this way.
I use also a small 360 LED camera light or a 12V LED light ring for lighting to be able to increase my f/stop. (You will need lost of light).
If you want to check out lens reversing rings or the lights used, links below.
18-200mm Lens: http://goo.gl/iifB6V
Reversing Rings: http://goo.gl/pD7eD8
LED Ring Light: http://goo.gl/xLhaNm
160 LED Video Light: http://goo.gl/Hm9ibl
"Mirage" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/