Has anyone played with any third-party zoom lenses for the GS3? I'm curious about the quality and performance, and wondered if anyone had any recommendations. Thanks.
Nope it will work. I've seen how they work but don't quiet understand yet. What happens is you put a metal or some sort of ring around the camera lense (not directly on it but around it). Then the lens itself attaches to it some way (screw, magnet, sticky not sure).
If you want some fairly good quality attachments Try here at Allgalaxytab.
I've bought their 4x lens and it worked great. I don't think these will work with any kind of phone modifications because they screw into their own case which must be attached to the phone. You should be able to contact them on their contact page, I haven't had the need so I do not know their response quality.