Sigma 400mm apo macro f5.6

So not content with the 120-400mm Sigma lens, I got me a Sigma 400mm prime F5.6. So far, it looks promising!
I will have to test it out properly but in the meantime here are some images(manual focus was used for all these shots):

Sigma 120-400mm DG APO HSM lens

So, test shots from my new Sigma 120-400mm DG APO HSM lens. So far, I can't say that I am impressed but it could be more my lack of talent than any fault of the lens!
                                     

Random bird images and things ...

Some shots, mostly taken with my SIGMA 120-400 4.5-5.6 AOP HSM , last couple of shots are with the 18-200 siggy...