Up for your consideration today, my Sigma 15mm f/2.8 DG full-frame fisheye lens. This is in mint condition, the only issue is a very minor scratch on the hood (which has zero effect on image quality!). Complete with lens, all-original hood, front and rear caps, box, all papers, nylon case and gel filter cutting guide. Front and rear glass are pristine. This is 'full frame', both in it's designed for FX bodies, as well as 180° diagonal field of view. US serial number. The only things different between this one and a brand-spankin' new one is 1. the price and 2. the minor scratch on the hood. It even comes with a guide for cutting gel filters that fit into the rear of the lens! 8 This lens will work on both FX and DX bodies, but will not give you a full 180° on a DX body. Also be aware that there is no motor in this lens, so it will not autofocus on entry-level bodies.... you will need a focus motor in the body to autofocus. This is rarely a problem as the DOF is so deep using hyperfocal distance, that you can just set the lens focus ring manually to 4 feet, set the aperture to f/8 and fire away. The ONLY reason I'm selling this is I'm selling both my 15mm and 8mm fisheyes to fund the purchase of the new Nikon 8-15mm. I've raced the Siggmas against the Nikkor and the IQ of all three is a photo-finish (no pun intended). So I'm selling the Siggies and getting the Nikkor simply to reduce bulk and weight. This lens sells new for $609 and given that this one is 99.99% as good as a new one, I'm asking $450. I'll even take the hit on the PayPal fees. Plus I'll pay for CONUS shipping.... outside the lower 48 I'll need a bit more so contact me for the amount if you're interested. Act fast, and I'll sell BOTH the 15mm and the 8mm fisheye I also have for sale for $950 for the pair. You can check my feedback here on the forum, as well as ebay (I have the same username there).