[FS: Optics] Two Sigma 18-35mm 1.8 lenses for Canon and Nikon

[Eimulis]

I have two Sigma 18-35mm 1.8 lenses for sale.
One for Canon and other for Nikon.
Both have custom 3D printed follow focus rings.

http://www.ebay.com/itm/201453010449
http://www.ebay.com/itm/201453017692