Im thinking about buying an HD lens and filter kit but it is very expensive.

I was wondering if there is a big difference between HD lenses/filters and standard.

They say the glass is much better quality but how much do they improve the visual quality?

And is it worth the big price tag?

Do you have any examples to link to?

I'm not a camera-expert by any means, but it does kinda sound like someone's trying to mark up a price-point by adding "HD" to the description.

Tiffen filters are very good. They are cross-media (like all).