No, you can't use the camera lens of ZL or SP, they are a little bigger and thicker.
As for how to replace the camera lens, it's easy. You only need tweezers or some sharp thing like tweezers. Use the tweezers to pry the camera lens ring with a little effort because there is adhesive sticker under it, and then you can remove the camera lens with the ring together easily. At that time, you can push then camera lens and remove it finally.