Summary: Picture quality is excellent. The size is manageable especially for long days like Disney. I haven't checked it for speed yet. I own other SLR s and for now this one is a pretty good all around choice.
Excerpt: This lens is the perfect addition to the standard 10-30mm lens that came with my Nikon J1. I took to Machu Picchu, Peru and left my "big camera and lens" at home. It did a great job and was light weight, yet durable...perfect for capturing high quality photos while I was hiking and climbing. It was also small enough to not draw a lot of attention as a tourist, making it easy to keep myself and camera secure.
Summary: If you have the Nikon 1, this is a great lens to get. The extra range over the kit lens is pretty good. Maybe not the best f-stop range, but pretty average. And if you are going to be shooting outside, a really good lens. I wouldn't use this lens in low-light as you won't be able to get good pictures. Overall, a good walking around lens for this camera.