Hi all, I've been toying with the idea of the Lens Turbo for a while now after being frustrated at how narrow even my Canon FD 28mm seems. I can't afford actual new lenses, so I thought I would try out the turbo. Here are some tests, using FD 50mm f/1.8 and FD 28mm f/2.8 mounted on a standard FD / NEX adapter followed by the Lens Turbo. Canon FD 50mm, standard adapter by markoneswift, on Flickr Canon FD 50mm, Lens Turbo II by markoneswift, on Flickr Canon FD 28mm, standard adapter by markoneswift, on Flickr FD 28mm, Lens Turbo II by markoneswift, on Flickr Not very scientific shots and certainly not my best photography, but I think it clearly shows the difference in focal length and the extra stop gained by the Lens Turbo II. I was shooting ISO 200, F/5.6, 1/200 for all these test shots.