Summary: Very inexpensive way to get into tilt shift photography with out committing to a high dollar lens. While inexpensive, and a lot of plastic, it actually feels quite robust and sturdy. The optics are a little slow, aperture wise, but as an entry level tool, its a great bargain.
Summary: Fun lens. This gives the stated effects, but honestly I think you can achieve more, and better, effects through software manipulation. But overall it's a fun little gadget to have in the camera bag.
Summary: This creates an interesting feel to images. However, no matter how well you focus it's not going to be super sharp. It's great for artsy type stuff, but I wouldn't use it too much for my paying clients unless I knew they were into that look.
Summary: This is a really neat lens, allowing you to take some really cool pictures. It's easy to install and use. BUT...be patient, it takes awhile to figure out how to make it take te pictures you see on the website. It's really best for spots or movement, not still shots. The movement makes the blurry part show up more. THis is a great lens to have in your bag, and good as a starter. I bought this as a gift, and I have the Lensbaby Composer for my Nikon.
Summary: Been playing around with my new Spark quite a bit. Overall, it's rather quick to learn, but it's going to take a while to master. This is one of those things that will take a lot of practice to understand the lens and the operation. One of the biggest learnings is hold to hold it. I'm so used to holding the camera in one hand and the lens in another. But that just won't work here, it's too unstable.