Hi guys, I've never heard of this brand, here, and from what I've seen, the aperture numbers look like consumer lenses, but I confess I'm still curious.. I guess they have no fast motor nor ed lenses inside.. I found them while looking on some big us online sellers (adorama, amazon, keh, bh..) Any experience with them? Thanks in advance p.s. question for ALL brands: Both Phoenix and some Tamron and Sigma lenses end with a 6.3-6.7 max aperture at the tele end. Are Nikon cameras able to autofocus with such slow numbers? From what I know, after 5.6 it should be manual focus.. or I'm missing something?