Hello! I'm new here! I've had my Sony Cybershot DSC H50 for a while now. My camera has a Carl Zeiss lens. However, there are some numbers on the lens, and I have no idea what they mean! 2,7-4,5/5,2-78 Does anyone have any idea what these numbers mean? Also, I've been wanting to get some filters, and my camera came with a lens flower hood and the attachment for the flower hood.....but I'm not sure what size filter to get, and if it goes attached to the attachment for the flower hood or what? Please help!