Property me the Cullmann bought 50011 mainly because of the small pack size, the achievable amount and the price (my 1st tripod) In the beginning I realized that the camera does not move smoothly back and forth horizontally, after it has not improved, I have the allen screw out turned the pin and the hole cleaned, sanded with sandpaper something greased and reassembled together and it now works properly. Because of this rework I give only 4 points otherwise I would buy this lens again, for me as an amateur photographer until now perfectly adequate, mainly because the pack size (fits perfectly in the pocket or other) and the weight.
