Forum: Pentax SLR Lens Discussion
08-31-2013, 06:21 AM
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Hello Fabio, welcome to the Forum!
According to our lens reviews, the filter size on the DA 18-135mm is 62mm. This is the size you'll need for any filter, including a circular Polarizer (CPL).
I'll add a + 1 for Marumi's, they offer the best price/performance/quality ratio, imo.
Ron
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