Hello, I did not ask the original question, but I'm having this same problem. I have a Blue Life Pure with Android 4.2.1. About a week or so ago my wallpaper went from being a clear image to being a blurry image. I don't really know why but it seems like it happened after my Go Launcher updated. I've tried several other launchers since then with no results' the wallpapers stays blurry.
I'm not sure why anyone would want blurry wallpaper. Seems like that defeats the purpose of having wallpaper. But regardless, I guess some people do like it, but I am not one of them. I would love to get my clear wallpaper back.
The wallpaper I use is the static type. It does not change or move. I change my wallpaper fairly often and I've usually used Kitty Play for my wallpaper. I've tried using Bing wallpaper hoping that would make a difference, but it has not. The wallpaper is very high quality. Also on the lock screen the wallpaper does show up clearly without the blur effect. It's only when I go to the home screen that it switches to being blurry.
Is there a setting to change this behavior? If not a setting, maybe an explanation as to why Android is forcing my wallpaper to be blurry.
Thank you for any help you can give.