Samsung 50-150mm F2.8 S Lens is big and sturdy (pictures)
At about 2 pounds, it's also relatively light for a fast zoom.
Lori Grunin
I've been reviewing hardware and software, devising testing methodology and handed out buying advice for what seems like forever; I'm currently absorbed by computers and gaming hardware, but previously spent many years concentrating on cameras. I've also volunteered with a cat rescue for over 15 years doing adoptions, designing marketing materials, managing volunteers and, of course, photographing cats.
The size of a large travel mug, at about 2 pounds the lens is still pretty big, though still far lighter than equivalent lenses designed for full-frame cameras.
In addition to supporting Samsung's i-Function system, the lens has a custom focus limiter. Both work in conjunction with settings you make within the camera body. There's also a lock dial.