Hi all, I'm aware that there are other discussions of this topic on the internet. However, I can't seem to find consistent information on the subject. Does anyone have experience using the Kendo DG Extension Tube Set with Nikon F Mount? If so, have you found that your lenses retain their functionality? In their description of the product, Wex claim that AF-S lenses lose the ability to autofocus. However, has anyone had success with other brand lenses or with Nikon's screw-driven lenses? Thanks in advance!