.
This lens - the Lester Dine, Viv S1 105, Viv 100 2.8, and Kiron versions - all basically exactly the same optically - can be used for general telephoto and portrait use nicely.
In fact, I think this lens feels like a Cz 100 in the hand. I know that's heresy to Zeiss owners, but I've used a Cz on my Nikon briefly and this Lester Dine is almost as nice. Maybe a touch more CA with the Viv/Lester/Kiron, but the Cz is not CA-free either.
I used it for many different applications in the three incarnations I've owned it in now (Viv S1 105, Viv 100 2.8, Lester,) and it's just a joy to shoot.