One more example of Sigma DG AF 70-300mm  FX lens with caps FILTER and Hood . Focus works great, aperture opens and closes well and optics show  dust specs and wipe marks plus some hazing line but still takes great pics. .Barrel does show some wear. Above pics were taken with this lens on Nikon D90.

This Lens will autofocus properly on the following cameras:

Nikon D50,70,80,90,100,200,300,600,700,800,7100,7000,D3,D4 D750.

On 

Entry level cameras like Nikon d40,40X,60,3000,3100,3200,5000,5100,5200,3300 etc you will have to focus manually.