FishEye for digital (was: A15mm/3.5...)

[Bertil Holmberg]

Would you buy a A15mm/3.5 for a *istDS? I mean, at 22mm practical  
focal length it would be a bit waisted.

How does a fisheye of similar length perform comparison wise? I have  
no experience of that kind of lens at all.

Is the 16/17mm fisheye at all useful with the *istDS?

Regards,
Bertil