¿Y comparándolos con el nuevo NIKKOR 10-24? Apenas tiene distorsión a 10mm:
http://www.kenrockwell.com/nikon/images1/1...C_8597-1200.jpg
El problema del 11-16 es que no tiene por lo visto motor de enfoque, y para una D40... tirar siempre a mano...
Según Rockwell:
"Easy choice: if you have a low-end Nikon that can't autofocus with the Tokina 11-16mm, get the Nikon 10-24mm which will autofocus. That means for the D40, D40x, D60 and D5000, you get the Nikon without question. The Tokina is faster, built better and costs less, but it won't autofocus on many cameras. If you have a heavy DX camera that can autofocus with the Tokina, like the D300, D200, D2X or D1X, I'd get the Tokina." http://www.kenrockwell.com/nikon/10-24mm.htm