Daniel Kuberek Posted September 22, 2021 Share Posted September 22, 2021 Does anyone know of a solution to attach a filter onto the front of an S2 or S3 18mm Panchro? The S3 retaining ring doesn't look like it has any thread, so maybe a clamp is the only way—in which case, does anyone know the required diameter? As for the S2 18mm T2 Panchro, it does look like there's a thread inside the retaining ring. Does anyone know the size? Quote Link to comment Share on other sites More sharing options...
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