I think it's the 4.5 vivatar 70-210. I've also got one of the old 3.5 series 1 70-210 i'm keeping for my F's. Why? Since I really am trying to move to 4x5? Well,,, I put my buddies Linholf (on loan, longish story) in the car, all tuned up, film, chromes loaded, tripod and get ready to head out. On the way out the door,,, every time,,,, I go back and grab my old vivitar aluminum case from the early 70's with my F and a couple of lenses. Just can't do it. Went last night to shoot a willow tree at sunset in a pasture, backdrop sagebrush hills. about 500 yards from the house.
you guessed it. F, 105mm and Fugi chrome at asa 50. and the linholf was sitting on the front seat all loaded and ready to go. People and their ruts. And even knowing you're in a rut you have trouble getting out. OhWell,,,