I was a bit hesitant to purchase this lens as it was an international model which I knew little about aside from that they don't have the warranty of Tamron USA products. The product is in nearly perfect condition and takes VERY sharp photos even on my Canon T6 at 600mm. This lens is honestly sharper than my Canon 24-70mm f/2.8L ii. As the title suggests, I was pleasantly surprised with this purchase. Got a great quality $1400 lens for $840 so I am thrilled thisfar