I am a new NEX-6 owner. I am coming from a D5100 using mostly the 35mm 1.8. I liked it, but I felt that it was a little too narrow for my liking; I'd prefer something wider for landscapes and travel photos. To that end, I like the idea of a 24mm (36mm equivalent). I don't necessarily need it to be fast: f2.8 is sufficient for my needs. I also don't want to pay too much (preferably <$125). Originally, I was looking at getting a Canon FD 24mm f2.8 because I already have an adapter that I am using for my incoming Canon FD 50mm f1.4 SLC, but I realized that I would prefer to have a separate adapter for each lens anyways to minimize mount/lens/cap/adapter fumblings. I've also heard good things about the Sigma 30mm, although this has an equivalent focal length of 45mm, and I don't know if I would want something so narrow. Additionally, that ~30mm focal length seems to be where my SEL1650 seems to perform best, and I don't know if the Sigma would offer a substantial benefit. However, it does have the advantage of autofocus over the legacy lenses I am considering. What 24mm legacy lenses are recommended in the price range that I am looking? Alternatively, would the Sigma 30mm be sufficient for my needs/be a significant upgrade from my kit 16-50 PZ? Thanks for any insight you can provide.