Went to an Air Show last Saturday with DS and Sigma 17-70mm and Sigma 135-400mm.
The results can be viewedina new gallery I just added, pls look at the pictureshere:
Below are a few samples...
B17 Sentimental Journey
Smoke Trail over Runway
Edited for Error ("Sentimental Journey" is of course a B17 not a B 25). A B 25 Mitchell was standing right next to it and I somehow mixed it up.