hey hv20.com !
i talked about this before : when i decided to have a mini35 adapter i chose nikon lenses. a 50mm 1,4 and a 28mm 2,8 to be precise.
i also have a really nice TOKINA ATX 35-200mm f/3,5-4,5 but it's a canon FD mount.... my brain start to work (for the first time ever) and i had this idea :
the focal flange of the canon fd is shorter than the nikon, so i just have to build an adapter to reduce the focal flange ... yeah that's stupid but i was persuaded that playing with the rings will allow me to reach a solution.
and this is what i've done :
1. put away my nikon 50mm + the nikon to canon eos adapter
2. put away the bayonet ring
3. put the canon fd mount with the adapter i've made.
4/5. the adapter is made of a rear canon FD lens cap(i made the hole) and a macro extension tube number 1 ( i had one left) and sort of glue the two (the screws are a temporary solution)
6. i screw the adapter on the canon FD lens.
7. this how it looks. this is really rigid.
with this solution i can reach infinite focus and more because the lens (tokina ATX 35-200mm F/3,5-4,5) has a macro ring.
i know that those who have sealed their adapter with a uv filter on the bayonet ring, for those using the VH-57X and for many others this solution doesn't work .... but it could help !