In anticipation: I bought to make the Macro lens for nature photography.
The lens is surrounded came on day one what ever speaks for itself, but it came with no padding on ... so they could get broken. Fortunately, she is not.
This has to screw it on my Canon EOS 1100 works great, they can well and remove it again.
Will I already mentioned that I so Mainly nature photographs make it also reaches perfection, small flaw I have about 5-10 cm in front of the object go what I did not want so. Trozdem it works without problems.
So in short: cheap and works