Excerpt: Anytime you shoot towards the sun or into bright lights, you'll get the worst flares and distortion you've ever seen. They're fine/unnoticeable for all other shooting situations so far, but if you want an all around filter, pay a bit more for some quality.
Summary: True to the many years that Tiffen has been around, this item works great, screws on (with care) easily and stays in place. I never really buy these for UV filtering but ALWAYS buy them to protect my lenses. Breaking a cheap filter is much better that putting a pit (or worse) in that expensive lens.