I posted about Hoya 58mm UV (Ultra Violet) Multi Coated Glass Filter before which can be used as a protective lens for Canon Powershot SX10 IS. One draw back about using a UV filter for your camera is they would absorb natural light and Photos might not be realistic or darker than you expected. If you serious about your photos same time about protecting your camera lens and if you don't mind spend few more dollars for it then go for a Hoya Super HMC UV filter or for a Hoya Super HMC PRO 1 UV filter. There is like 25$ price difference between these 2 UV filters and my recommendation is go for the Hoya SHMC PRO 1 UV filter.
This Hoya SHMC PRO 1 UV filter offers revolutionary performance in light transmission and color balance. 12 layers of Super Multicoating are applied to the surface of the Skylight 1B and UV models, which produce an average transmission of 99.7%. Coupled with maximum surface precision, this allows increased resistance to flare the stunning images can be recorded at wide apertures without compromising the performance of your lenses.
They applied 12 layers of Super Multicoating to the surfaces of this filter to produce an average transmission of 99.7%. Coupled with maximum surface precision, this allows for increased resistance to flare.
Of cause if you think its too much you can buy Hoya Super HMC UV filter which you can buy around 35$. Buy which is best for your need and pocket.