So yesterday I found a set of magnifying filters at goodwill for 79 cents. They were super dirty so I thought what the heck I will clean them up and see what I can do with them. So I cleaned them last night and put them on my only 58mm lens 18-55mm kit lens. And I got a few ok pictures but for them most part the lens just hunted for focus even when I did manual focus I got maybe 1 good photo from it. There are a fem small scratches on them so I though maybe this was why I had focus issues. Is there something to repair very small scratches like this?? Or is there something I am doing wrong that the camera is hunting for focus so much? Is there any tips for using these types of filters you guys can give me?? I mean the were only .79 cents but I would like to try to use them just for fun. LOL Oh and all the photos were taken in M mode with some on af some mf.