Tiffen UV Filter Glass Rattle
I can t help much as I ve only just bought my first one and that was in ignorance, I ve only ever seen the name when used as big square filters in a matte box but it was what I was offered and as we don t have 'em in the UK and I assumed as the store was OK they wouldn t sell me
I was desperate to cover the front of my 24-70 .
Anyway mine doesn t rattle . Yours shouldn t either it, would drive me crazy....