One more example of Sigma AF 18-125mm lens with caps filter hood in a great shape with everything working properly and smoothly. Focus works great, aperture opens and closes well and  Optics are in a great shape with light dust specs .  Lens takes great pics.  Above pics were taken with this lens on nikon D90.

This Lens will autofocus properly on the following cameras:

Nikon D50,70,80,90,100,200,300,500,7000,7100,7200,7500

On 

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