Summary: I first bought this just to try it out, but ended up keeping it because it allows me to be so much more creative at a very low cost. I would recommend anyone to try this out, it will help you hone your manual focus skills.
Summary: I'm afraid I can't write a very good review on the lens itself as I haven't really used it yet. Everything else was excellent. It was well packaged. Just as it was advertised . Not one problem on that end. It's all on my side. I need to get my act together and work with it. I justify that it's winter here and below 0 and spring is coming. It was a good price.
Summary: Years ago I used an older version of the lensbaby. It was cool, but not exactly easy to use. This one is a lot more ergonomic, and easy enough to hold the camera with one hand, and focus the lens with the other. It takes a little getting used to, but it's not a steep learning curve. I think it's a pretty decent value for the price. I use a Canon EOS 7D, and shoot manual exposure.
Summary: I have this paired with the Edge 80 optic. Fits and works well on both my APS-C frame camera (T3i) and full-frame (5D Mark II). This has seriously become my favorite setup to just walk around with, supplanting the 40mm f/2.8 STM (which is an excellent walk-around lens, btw). I'm not a fan of the school of "this a great camera because it forces you to slow down and really compose" thought.
Summary: This is the best money I have spent on anything photography related in years! Its a little more challenging to use than the typical auto focus lenses but when you get it right all your pictures become works of art. Just when I was getting tired of my camera setup and getting some new gear lust, the lensbaby lit the "spark" (bad pun!) for some new creativity! Best $75 I've spent in a long time.
Summary: While the spark is the cheapest in the lensbaby lineup it makes the most sense as a starting point. The spark is a unique all manual lens. the selective area of focus is amazing. I've gotten everything from shallow depths of field to creative partial focus with this lensbaby.While using it for portraits, landscape and as a walk around. My wife and I fight over who gets to use it when we go out for shoots.
Summary: This is a great starter lensbaby lens for your Nikon -- if you are not sure if this is a worthwhile lens for you, its pretty much the "original" and you will quickly be taking artistic shots. THere are better quality lenses now available from Lensbaby, but none as light and convenient as this at such a low price. You'll have fun with this!