Nikon Nikkor 135mm 2.8 AI-S lens: Best VALUE portrait lens?

Why buy an old Nikkor vintage lens?
What is the application for a 135mm? (85mm is the traditional)
What are the specs for the 135mm 2.8 AI-S lens?
What are the pros and cons of this prime lens?
How does it sit with alternatives?
Sample shots and my take on the lens
Links to further videos on the subject

Blog post about lens speed and why it is important to some:
https://frederikboving.blogspot.com/2019/03/aperture-why-speed-of-your-lens-is-so.html

Видео Nikon Nikkor 135mm 2.8 AI-S lens: Best VALUE portrait lens? канала frederikboving