I don't know what I was thinking when I got this lens. Perhaps the price was the main motivation - a functioning full-frame zoom for 5 euros (~ $6.50). Is it worth the price of a cappuccino and a croissant? Should you buy it? Do you even care to read this review? Let's find out!
+ cheap. 28-70mm full frame lens for a few coins lying around on your desk.
- ...although, don't fool yourself. It's a cheap, very basic, consumer zoom.
long-term solution. It's just not good enough, I don't see the point.
I'd skip for mirrorless, too. Too big and heavy for a small mirrorless body, and the image quality isn't that great.
The problem of this lens is its scope. It's cheap, yes. Very cheap. But, so what? When you buy lenses, you should buy in terms of scope (that is, where do you plan to use the lens). And this Tokina 28-70mm, although not a bad lens, is hopelessly obsolete in today's photographic world. If you want a midrange zoom for full frame, there are literally dozens of options that are better. Some of them are cheap, some of them are expensive (and some of them very expensive). Read my article on value, and try to decide how much (if any) you should spend on a midrange zoom. But, the bottom line is, even if you are on a very strict budget, there are lenses that are more sense-making that this Tokina.