Catpiano

I think Fichai means fish eye and 400mm AS WELL .. not just fisheye and 400.

chobit

I recommend you consider 50 1.8 is great, but I recommend you check out the 50 2.5 macro or the Sigma 50 macro which has faster focus.

siumaibb

If you have to ask which lens to buy next, you DON'T need a second lens cuz you didn't use your kit lens enough. If you use your kit lens enough, you'll know what your kit cannot satisfy you and you'll know which lens you'll need.