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I originally had UV filters on all my lens. It lasted for only a month on my EF-S 10-22, the flare was unacceptable, with any bright light. Reflections on night shots as well meant that I never found a reason to put any of them back on.

Why would anybody buy a new EF 70-200L IS II and stuff the IQ by installing a filter?

@Sinh Nhut Nguyen

If you want go and play always put on you Wellies.