Smiert Spionam Offline Upload & Sell: On
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There shouldn't be too much -- there isn't a whole lot with a 77mm thin polarizer, either. Maybe below 20mm or so.
Keep in mind that at those focal lengths, it's not a good idea to use a polarizer to darken skies -- the effect will be very uneven. You'll be better off with some selective color work in processing.
It can still be useful for reducing sheen on foliage at those focal lengths, though, which is not something you can really do in post.
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