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Diffusion Filters (Screw-in)
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  • DanPVDanPV

    Good post on diffusion filters over on Hurlbut's blog:

    http://www.hurlbutvisuals.com/blog/2012/06/diffusion-for-the-digital-age-the-use-of-glass-filtration/

    He talks about how you have to change the diffusion strength when you change the focal length:

    "Typically, the rule of thumb is to use heavier diffusion when using a wider lens and a lighter diffusion when going to a tighter one, pretty much like the net being stretched looser or tighter. So for a 24mm, I would use a number 2 SFX. Then on the 50-85, I would use a number 1 SFX. For anything above a 100mm, I would use the number 1/2 SFX."

  • PaddyPaddy

    @ChrisPeters: which focal length (and as a matter of fact which lens) were these tests done with? These are quite important parameters when testing structural filters...

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