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Quick questions re: filters

  • 23-06-2009 9:24pm
    #1
    honerbright
    Registered Users, Registered Users 2 Posts: 1,228 ✭✭✭


    Hey there,
    Just some quick questions regarding filters.
    I've been looking into getting a polarising filter for my camera (a Sony a200, using the 18-70mm kit lens ) and i've been having a look online at various prices etc and I came across a two sets of Camlink UV And Polarising Filters for €20.79.
    Just wondering if
    a) they are any good (even just as starter filters and eventually buy more expensive ones if I like the results they give)
    and
    b) will either set fit my camera/lens? (the two sizes 52mm and 58mm). I'm still pretty new to SLR cameras so I haven't a clue about the thread the products talk about etc.

    Thanks so much! :)


Comments

  • #2
    mrmac
    Registered Users, Registered Users 2 Posts: 2,967 ✭✭✭mrmac


    Hi, and welcome to the forum.

    Your 18-70 kit lense takes a 55mm dia thread. You can tell this by looking on the front of your lense, and somewhere near the front glass your see the diameter sign followed by 55.

    So you're going to need a filter with a 55mm thread?
    Still with me?

    Next, you don't need a UV and a Polarising Filter.
    Most people get a UV filter to leave on the front of their lense, as a form of protection against scratches etc. But a UV filter will cost you at least a 1/3 stop. For everyday use, it's grand.

    If you want a Polarising filter, make sure you get a Circular Polarising Filter or CPL. These are designed to be used with digital cameras, and allow you to rotate the filter to alter the affect - increase or decrease the polarising. These filters can cost you up to 4 stops, which means, you're getting restricted to nice bright day light.

    There is no need to have a UV and a Polariser on at the same time.

    I'd suggest getting a CPL and use it when you need it, and don't bother with a filter permanently on your lense, unless you're at the beach a lot!


    Edit: there isn't a filter in the world that can improve your skill, only practice!


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