Originally posted by Winder I'm pretty sure he is trolling.
I don't think so...low post count, previous owner of Nikon D5200 and Canon 70D. Current owner of K-3. I believe he has been sampling the various brands and moving up at each step. Not knowing about available lenses could be an expensive mistake, but it is not our money, right?
For the OP (@Vallista), as mentioned above, drilling the offerings at B&H provides an accurate sampling of FF lenses available new in the U.S. There are a few others (e.g. FA 35/2) that are sold outside N. America. If those offerings are inadequate for your needs, a Nikon D810 or Canon 5D MkIII may provide similar performance, though at somewhat higher price points for both body and higher end lenses. A Sony A7RII or A7II may also work for you.
Steve