I recommend the excellent 200mm f4 ED IF Ai-S instead. Its just as sharp as the AF version but its lighter and considerably cheaper to buy. Its a manual focus lens so its even better for macro work where AF is often useless.
Its comparatively large working distance is exactly what you need when trying to take pics of highly skittish insects like Flies and Grasshoppers as you dont have to get so close to them.
If your worried about the fact it only does 1:2 macros on its own, dont be, as its works excellently with one or more 52mm Canon 500D Pro quality close up lenses to give either 1:1 and 2:1 macros with virtually no loss of f-stop like you get with extension rings and more importantly no noticable loss in image quality.
Last edited by sigmasd14; 05-12-09 at 11:31.
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