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Polarisation and modifiers (slrpnk.net)

submitted 1 month ago by oeuf@slrpnk.net to c/photography@lemmy.world

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Can anyone tell me whether modifiers/diffusers 're-polarise' light? For example, if i put a polarising filter on a speedlite but then fire it through a softbox, will the light still be polarised outside of the softbox?

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[–] Etnaphele@lemmy.world 5 points 1 month ago (5 children)

I think it will mostly be depolarized, from Wikipedia:

Relatively high degree of depolarization is also achieved by light passing through usual semitransparent materials like matte plastic or greased paper.

[–] oeuf@slrpnk.net 1 points 1 month ago (4 children)

Thanks 👍

[–] Etnaphele@lemmy.world 1 points 1 month ago (3 children)

Out of curiosity: why would you want to polarize a speedlite?

[–] oeuf@slrpnk.net 2 points 1 month ago (1 children)

Part of a cross-polarisation setup for reducing specular highlights. I think the same would apply to most other light sources but in this instance a speedlite is what I will have to work with!

[–] Etnaphele@lemmy.world 2 points 1 month ago

Interesting!

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