Lensbaby Velvet 28 for Nikon FThe Lensbaby Velvet 28 is a 28mm f2. 5 lens that's probably among the closest things Lensbaby makes to a "good" lens. It's still a blurry mess wide open, of course, but that's part of the appeal; you can coax reasonably sharp images out of this, with the usual Lensbaby edge softness, past about f5. 6. Not your average everyday lens, but there's good pictorial potential here for folks who like soft focus.