Taking a look at three 135mm primes from yesteryear and comparing to a modern day zoom.
Minolta 135mm f/3.5 MD (Smallest)
https://goo.gl/AAVPtg
Nikkor 135mm f/3.5 AI (Sharpest)
https://goo.gl/32lqVX
Vivitar 135mm f/2.8 (Fastest)
https://goo.gl/7CsjQx
Olympus 75-300mm II (Versatile)
https://goo.gl/zgcwj5
Here’s how they look on the Pen-F.
