It is a waist of money !!! The size of the APS-C is for amateurs; most of the time. I do not say "amateurs are bad photographers". A professional tries to earn his living bij making photographs. An amateur makes photoos just for fun. Forget those figures. Enjoy the hobby. Stop talking about good and better. By today's standards the old optics should be bad ? People talk too much. People think bigger is better. All nonsense.
In the U.S.A. Full Frame is the standard for the Pro. In Europa Full Frame is the standard for the amateur. Mr. W. Eugene Smith was a great American photographer, even with the tiny Olympus Pen F 18 x 24 mm camera.
Show me two identical pictures; made with the two different Fujinon zoom optics. Do the same with a 135 mm optic at 6 x 6 cm neg. and with a 210 mm at 4 x5 inch. Can you see the difference of DOF at 80 x 100 cm enlargements.
I never said that a Fujinon optic was bad. Hardly anybody needs the oversized wide apertures. Is not it the same like todays motor cars. Smaller engine with big turbo.