Sigma AF 28 - 80mm F/3.5 55mm Aspherical Macro Zoom EF Mount Lens for Canon EOS Cameras.

On close inspection with a spotlight magnifier Lens is crystal clear just a few microscopic specs of dust around periphery

I last used this lens about 12 months ago and it was working perfectly then but I no longer have an EOS camera so are unable to test right now so no quibble free returns if not 100% satisfied