Can't find anything to complain about. It seems much more durable and well built than I expected. The focus ring is buttery smooth and the aperture ring is about as perfect as I could wish for. I bought it to photograph the Milky Way and it outperforms other fast lenses. It's entirely manual, but focusing is surprisingly easy. True infinity is just below the infinity mark on the lens barrel, so you can't just turn it upside down. Anyway, I'm doing some test shots to make sure the stars are clear, so it's not a problem. It also reproduces colors beautifully. I've added some sample photos. The Milky Way was captured near the city, so the lens captured the Milky Way quite well despite the light pollution being very close by.
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