Any downsides to step up rings?

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Nebell Regular Member • Posts: 297
Any downsides to step up rings?

I have a very good 82mm ND16/CPL filter that I would like to use on my 67mm lens.

I got it fairly cheap (it's twice as expensive now) and would not really want to buy a 67mm one as they are quite expensive. A step up ring is only about €15-20.

But, are there any downsides to using a 67mm > 82mm step up ring?
My logic says no, but I could be wrong.

 Nebell's gear list:Nebell's gear list
Sony a7R IV Sony FE 90mm F2.8 macro Sony FE 135mm F1.8 GM Sigma 100-400mm F5-6.3 DG DN OS
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