My first post and question but first... Greetings to one and all and...Merry Christmas. Okay. As a complete novice I'm a little confused at to which UV to buy. I've been told I should by a UV if for no other reason than to protect my lens. But I've just been on Amazon and well, I ran away:confused: Can anyone offer me a little guidance please! My question is.....What's the difference (apart from price) between...... A Hoya G or Green series UV. A Hoya HMC -UV. A Hoya pro digital protector. A Hama (coated on both sides) UV. A Hama UV HTMC Filter A B&W-UV with multi resistant coating. A Sigma EX DG Digitally Optimised UV Filter. Cheers. Snaps.