I am looking for camera filters that can be used on the P3S. I purchased some from Amazon but when I installed them they were too heavy. The camera cannot stay upright. I went back and read the reviews and many others had the same problem. I should have read the reviews first! LOL Anyway, for the P3S owners out there. What filters have you used successfully? I'd like to get some first hand input before I buy anything else. Thanks.