I recently picked up a cheap "CCTV" lens online. I mean really cheap. Less than a trip down the local chippy level of cheap. I picked up a Fujian 35mm 1.7 CCTV Movie lens for my Olympus Pen Camera.
It is best to think of this lens as a special effect lens. It is one step up from shooting with a plastic Holga lens but of course wouldn't match the optics of even a third party lens like Sigma.
It creates a soft focus and dreamy effect. The lens is fully manual and mostly suited to the smaller mirrorless cameras. On my bigger SLRs it'll only work as a macro lens.
I've included a few sample shots from the camera. I would recommend picking it up if you see it for cheap but I'd avoid paying too much for this.
I've seen some sellers putting it up as a "Lomo" lens in the hopes that some would be hipster wouldn't mind paying over the odds for that Lomo feeling.
Give it a go and tweet me the results. I'd love to see what others do with the lens.