Alexander Boyd Posted November 7, 2020 Share Posted November 7, 2020 (edited) Hi all, I'm trying to find a way to optically diffuse/diffract light so that the image is blurred towards its outer edges. Similar to what they did in Post Tenebras Lux, where I have read somewhere that they removed front elements of the lens. Would love to hear how you'd go about this. thanks, Alex Edited November 7, 2020 by Alexander Boyd Link to comment Share on other sites More sharing options...
Stuart Brereton Posted November 7, 2020 Share Posted November 7, 2020 Reversing the front element will give you a center spot that is in focus, and blurred edges. It's a lot like a Lensbaby effect, but not as controllable. The effect in your pictures looks different, as if they are shooting through a piece of glass with a hole cut in the center of it. Link to comment Share on other sites More sharing options...
Alexander Boyd Posted November 7, 2020 Author Share Posted November 7, 2020 Thanks for pointing this out, Stuart. You're right, the edges are not just blurred as in a lensbaby effect, but the light is kind of "broken up" and refracted. I'll do some tests with additional glass in front of the lens. Link to comment Share on other sites More sharing options...
Daniel Klockenkemper Posted November 7, 2020 Share Posted November 7, 2020 I think the Vantage spot diopters will do exactly what you want: https://www.vantagefilm.com/en/products/optical-tools/vantage-diopters I got a similar effect with a homemade version: Link to comment Share on other sites More sharing options...
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