My new Canon 200-400mm telephoto zoom lens arrived yesterday. After putting it through some testing, the image quality has proven to be as exceptional as I had hoped for. Its range falls between my Sigma 120-300mm and my Sigma 300-800mm and my thought was that I would sell these two lenses to help offset the cost of the new Canon. Both have served me very well over the last 4 and 7 years respectively but I cannot justify keeping them knowing I will always reach for the Canon first in all but a few very rare situations. I spent a few hours creating the glamour shots to be used in my listings, a form of photography I enjoy a great deal.