Does anyone have any opinion on these Isco lenses that vid atlantic sells from their site.  Are they worth it?  I am so new to anamorphic that I am really just trying to gather as much information before I make a purchase.  I am shooting with a 5D Mk III and so I am really looking for the right adapter to fit what I have. 
  
http://www.vid-atlantic.com/lensshop.html