Saw this lens on Amazon for $66.40 AND in comes in L mount, which is native to the Leica T. It also comes in various other crop sensor mounts, like Fujifilm, Canon EOS M and so on. It is all metal. The focus and aperture controls work smoothly with aperture clicks at each setting. It needs to be stopped down to about f2 or higher for the photos to be sharpish. It is reasonably small, can get reasonably close (w/i a foot or so) and the build quality is pretty decent. Not much in the way of lens coating but hey, it's cheap. I like it.