>>3753508Not really. Only heavy tele lenses with years of use tend to creep, but that can be solved by holding the lens properly.
Same for the focus issue, as long as you know what you're doing and use the right technique it won't move whether you're zooming in or out. Try them for yourself instead of relying on what you've heard from others, you'll be surprised how stiff and pleasing to use these things really are.
