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I have Nikon D750 camera with a lens having a focal length from 24-70mm and lens diameter 72mm. I have bought a circular polarizer and Cokin P system filters with a wide-angle filter holder. But there is some vignetting at 24mm. What system should I buy to remove vignetting? Is the P system small and I should go with XL? Cokin system with circular polarizer

Cokin system without polarizer

First photo is with cokin filter and circular polarizer and second photo is cokin filter without circular polarizer

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    \$\begingroup\$ Relevant answer to other question, it seems the P system goes up to 82mm lens diameters. The size should not be an issue for you, but I wouldn't know what would then be causing the vignetting. Perhaps you can add some pictures of your camera + filter and the resulting images? \$\endgroup\$
    – Saaru Lindestøkke
    Commented Nov 27, 2019 at 15:35
  • \$\begingroup\$ I added some images. I think vignetting is due to the circular polarizer. \$\endgroup\$
    – newbie
    Commented Nov 27, 2019 at 16:13

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Is the vignetting happening in the sky when using the lens at 24mm?

In that case the issue is simply that a polarizing filter produces an uneven effect on wide angles.

Update: Just as I added this answer, you posted images that shows that this is not the cause of the issue.

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  • \$\begingroup\$ This is my first time with the filters, so I am not sure if I bought the right one or not. \$\endgroup\$
    – newbie
    Commented Nov 27, 2019 at 16:16
  • \$\begingroup\$ If the filter is not close to the lens, e.g. you're using an adapter ring, that increases vignetting. \$\endgroup\$
    – DrMoishe Pippik
    Commented Nov 29, 2019 at 2:49

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