MC UV filters are a good initial investments.

Multi-coated filters greatly reduce the appearance of lens flare and ghosting caused by reflections.
They help protect your lens from dust, moisture and scratches. If desired they can be left on the lens at all times for protection.
Absorbs the ultraviolet rays which often makes outdoor photographs hazy and indistinct.
This is a very good quality filter made by Tianya with optical glass

You can also have a look at my other listings at this link:
http://www.trademe.co.nz/Members/Listings.aspx?member=931006