Originally Posted by Les Sarile
The old lens reviews listed the T-number of the lenses. In this page a Rokkor 50mm f1.4 with a T-number 1.53, 28mm f2.0 with a T-number 2.25 and a 135mm f2.8 with a T-number 3.11. In these examples it doesn't seem significantly off.
Les, you have the small child's concept of old.