Tim, I'm not sure how this would work. I have a Fuji Finpix S3800, which is physically very close to the 3100, I have a UV filter, screwed into the lense shade at 55mm thread, which puts it infront of all the lense parts. But as this camera does not have a removable lense, I don't see how a screw threaded lense of any type might be beneficial??