Originally posted by boriscleto Camera-wiki says the Vivitar was made by Cosina and is a close relative of the C1s. But the C1s has very different styling.
That's been my understanding, too. I have two copies of the C1s (which is, as you point out, very differently styled - and less appealingly so, IMHO), and they're nice little cameras. Lots of plastic externally, and I imagine that extends to the inner workings, so I'm not sure how long they'll last. But if they're picked up cheaply, I think they're worth having. I always fancied the Vivitar, but wasn't able to find one in the condition, and at the price, that I wanted...