This lens has been geared all along the zoom barrel to allow the complete compensation of near to far focus as well as widest to tightest zoom.
Here are some stills from the FD set uncolored and colored to see how well they match up.
Aside from not having an impressive f stop and an average zoom range, it is still an L series lens, which means it is actually leagues better than the vintage Nikon 80-200mm f4.5. Which has a slower f stop and does not focus as close as the Canon.
It’s a very good way to get a vintage telephoto look.
This entire lens set is in EF with focus, iris and zoom gears and 77mm inner diameters and 80mm outer diameters.
They will cover Full Frame, Super 35mm and m4/3 sensors.
Here is a demonstration of the macro option: