If you have been shooting for as long as I have, you have a cupboard full of old equipment. Often old gear is not worth selling. My old f mount 180mm f2.8 AF lens is a lens that people are not going to buy. Unless you have a camera body from that era or a pro spec SLR with a built in AF motor, it will not auto focus on the current F bodies, or on the Z bodies. For many that’s a deal breaker.
It is in fact a lovely lens and in the studio with modern mirrors bodies, using older classic lens is not really an issue. With an EVF and the ability to zoom in the viewfinder to get focus right, you can in fact get some great shots.
This was a set I took recently using hard light; its a single beauty disk over head, black background and the model wearing a black top and black trousers.
The majority of the shots were taken with a F mount 105mm f/2.8 macro lens, which makes a very nice portrait lens. I also used a 50mm f/1.2 for some of them.
So I suggest next time you’re shooting a set, as well as your usual go to lens for that situation, try something a bit different. If you own a current mirrorless camera then have a look around at old lens, you may find something you love.