I just purchased an ikelite housing for my Sony digital 8 camcorder (dcr-trv740). I was wondering if purchasing a wide angle lens from Sea & Sea that attaches to the dome port externally is almost a necessity. I have a housing for my Canon Rebel 35mm slr in which I have been taking still images for years, but am new to underwater videography. I visit my sister on Maui, HI every summer and I decided I was bored with doing still images all the time. Do most of you use autofocus and have you had much problems with it? I could see how autofocus could go crazy with particulates in the water. Thanks. Bruce Skousen:)