The walimex pro 135mm lens is processed very valuable. It fits comfortably in your hand, and the lens mount fits. The package includes of course the lens, a lens hood a storage bag, front and back cover and a brief but sufficient instructions. When the lens is a lens MF, what does that mean it has no autofocus. So you have to focus manually. But that's not a problem because the adjustment can be set well and fine. Also the aperture ring works perfectly. In close-up it must be ensured that the shortest distance to the manufacturer's instructions at 80cm moves. That comes out about even. I use the lens mainly for landscape shots. By quite a large lens has a very good light output. What is perfectly suited for pictures at dusk or in fog shots. If you work a lot with polarizing filters or effects filters, you have here an ideal lens that it is an objective that an internal focus has. What does that mean it does not change the length.