I bought one of these for $30 or so to play with the swirly bokeh. That was pretty swirly so okay there. I have a couple problems though. I had to send the adapter back and get another and the second one also has mis-machined flanged that will grind on the inside of my camera mount. I had to file the second one down. But that's just the adapter. The focus and aperture are in opposite positions. Are they all like this? The cap doesn't fit well and for some reason I keep trying to unscrew it because it's super tight and that ends up unscrewing the entire lens. This thing could have been fun but as of now it's a nightmare. Same results with yours; you got used to it, or what? Thanks.