I bought a Sigma 18-250 Macro HSM lens with my Nikon D5300 for Christmas.
I take a lot of shots at car shows so take one then walk onto the next car etc. When I do and I let the camera 'hang' the lens tends to extend itself to maximum range. There is a lock on it to keep at at 18, but that's a bit of a pain when you want to quickly move onto the next shot.
So my question, should the zoom be this 'loose' on the lens?