Hello all, I want to get back into photography, as I have really lapsed over the last 18 months plus. Finding the woman of your dreams and having a baby can do that! I used to be, if not a prolific then consistent amateur and have taken hundredss of photos and have a hard drive full of folders. As I have had a tendancy to be indiscriminate about what I shoot and the technicalities of photography have often bamboozled me, I want to hang on to my current kit, but expand so I can grow a bit more in confidence. I have a Sony A330 with kit lens and two zoom lenses. I was thinking of a wide angle lens, and have seen an 11-18mm Sony and its Sigma equivalent. There is also a more expensive Sigma which I assume is due the f/stop difference. I do like landscape photography and think the f/stop range would help me in low light(?). Would any of these lenses benefit me?