Couple from today

[Robb in Austin]

Both with the Sigma 150/2.8, Nikon D40.
The Tail spot is at ISO1600, so it's a bit noisy, and hand held.

Some curves applied, sharpening, resized in Gimp.

 

[bmwardo]

Very Cool, I am pretty impressed at ISO 1600 that isn't bad, especially for a D40. I suppose it also speaks highly of the lens as well. Thanks for sharing.