Re: EF 100mm f2.8L Macro IS USM
A close up lens is a supplementary lens that screws to the front of your existing lens, using the existing filter screw. You need to buy them in the filter size of your intended lens, or if you would like to use them on more than one lens, buy it in the larger size and use step down rings to use with the smaller filter sized lenses.
An extension tube fits between the body and your lens and allows the lens to focus much closer than it was designed to. In short, allowing a standard lens to act as a macro lens. There are two types of extension tubes: manual and automatic. The manual ones are cheap and that's about all you can say about them. With no way of stopping the lens down, they are shooting wide open and with no depth of field, the results are horrendous. Pay the extra and get the automatic.
Rule of thumb seems to be:
Occasional macro needs: Close up lens
Quite interested in macro: Auto Extension tubes
Quite serious about macro: 100mm macro lens
Hope that helps.
Originally posted by Riggers
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An extension tube fits between the body and your lens and allows the lens to focus much closer than it was designed to. In short, allowing a standard lens to act as a macro lens. There are two types of extension tubes: manual and automatic. The manual ones are cheap and that's about all you can say about them. With no way of stopping the lens down, they are shooting wide open and with no depth of field, the results are horrendous. Pay the extra and get the automatic.
Rule of thumb seems to be:
Occasional macro needs: Close up lens
Quite interested in macro: Auto Extension tubes
Quite serious about macro: 100mm macro lens
Hope that helps.
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