Lines on Kenko circular polarising 49mm filter(s)

Hi all,

I wonder if you could offer some advice? I recently purchased the D-FA 100mm Macro WR lens from a well-known supplier, the supplier is offering a free UV and polarising filter with the lens.

When I open the polarising filter I noticed lines running across the lines. I emailed the supplier and they sent a second filter, but this also has lines running across it, but they not exactly the same.

I have had polarising filters before and have never noticed any lines or marks within the filter. I assume these are manufacturing faults?

As the filters were free, I'm not overly fussed but a free filter worth £20 helped sway my purchase decision

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Digital: Pentax K-1 II + Grip, Pentax K3II + Grip, Pentax MX-1.
Lenses: Pentax D-FA 24-70mm 2.8, D-FA 15-30 2.8, D-FA 70-200 2.8*, Pentax 35mm 2.4, 50mm 1.8, 18-135mm WR, 55-300mm HD, Sigma 70-300mm (macro), Tamron 17-50mm F2.8.
Film: Mamiya C330 Medium Format, Pentax Super ME.

Could be a defective batch. Probably why they're giving them away. They're not even uniform.

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I know what i like, If not always why.

Ask them to swap the filter for a good one.

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Half Man... Half Pentax ... Half Cucumber

Pentax K-1 + K-5 and some other stuff

Algi

Maybe offer to send them back and ask them to check the filter before sending a mew one on to you.

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I know what i like, If not always why.

Kenko filter arnt worth 20 quid... But as you got them for free.. Like has been said above return them... Ask them to double check the third one before sending on to you...

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K-1Gripped K-1 ungripped K-5ii K7 Various lenses

Stuart..

Sorted, it appears that they may be from a bad batch. They are sending one from an alternative brand.

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Digital: Pentax K-1 II + Grip, Pentax K3II + Grip, Pentax MX-1.
Lenses: Pentax D-FA 24-70mm 2.8, D-FA 15-30 2.8, D-FA 70-200 2.8*, Pentax 35mm 2.4, 50mm 1.8, 18-135mm WR, 55-300mm HD, Sigma 70-300mm (macro), Tamron 17-50mm F2.8.
Film: Mamiya C330 Medium Format, Pentax Super ME.

👍🏻👍🏻👍🏻

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I know what i like, If not always why.

Try and pick at the surface. It might be a plastic protective layer for you to remove.

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All the gear with no idea