Well, maybe nobody is speaking of older lenses but, here's some input!
I just received a lens from an old Navy Shipmate who is retiring from the Navy. He knew that I have an especial fondness for Angenieux lenses which I used when I was a Navy cinematographer (12-120mm zoom for Arriflex 16mm cameras and Angenieux primes for my 16mm Bell and Howell Model 70 16mm camera).
We know that the French lens producer, Angenieux, made lenses for still cameras and that they introduced a really nice 28-70mm f/1.6 lens for full frame DSLR cameras. Angenieux could not compete price-wise with the Japanese lens producers and halted production on that lens. The lens design was purchased by Tokina who produced it as the 28-70mm f/2.6-2.8 ATX Pro for overseas markets and as the 28-70mm f/2.8 ATX Pro for domestic Japanese consumption.
My friend found one of these f/2.8 ATX Pro lenses on the used market in when his ship called for a port visit in Japan. He purchased it and mailed it to me. When I asked him how much I owed him, he said, "How about a case of beer?"
I am really happy with this lens both on my 5D2 and 6D2 cameras. It is lighter than the Mark-I version of the Canon 24-70mm f/2.8L Mark-I and right about the same weight as the 24-70mm f/2.8L Mark-II.
This is a really nice lens and produces far better image quality than the Tokina 28-70mm f/2.8 SV ATX Pro which replaced it. Tokina had skimped on the SV (Special Value) model to make it cost competitive with other third party Japanese lenses. The cost cutting measures resulted in a lesser image quality than the original 28-70mm f/2.8 ATX Pro.
At first, I was just going to use this lens for nostalgic purposes but, I have been using it more and more recently. Here is some additional information regarding this lens in its different variations...
I have version #3