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Which special effects filter produces circular highlights as seen in this photo by Magda Wasiczek?

  • Google image search with Donut shaped bokeh. Is that the effect you are looking for? – Esa Paulasto Feb 14 '14 at 6:51
  • @EsaPaulasto "donut" bokeh is usually produced by a mirror lens and produces rings of constant thickness, the linked image looks like a specially cut filter which has a ring of varying thickness (such as produced by two overlapping but not centered circles) with a smaller circle inset. – Matt Grum Feb 14 '14 at 10:00
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    @MattGrum - yes, thank you, it says so under the sample image: "a special effects filter" but for some people the mirror lens bokeh could be "close enough". – Esa Paulasto Feb 14 '14 at 10:52
  • @EsaPaulasto - I am very certain a filter was used I just don't know which one. I have very little knowledge of special effects filters (other than CP, ND) and would like to try producing this effect. Although Magda does use lenses that produce donut shaped bokeh it wasn't used here. – Jakub Sisak GeoGraphics Feb 14 '14 at 13:54
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I can't say which exact brand/model of filter was used but any opaque circle with a smaller circle cut into it would produce this effect when placed over the front element the lens.

How well it will work depends on the maximum aperture and construction of the lens

  • Thanks @Matt. Can you provide a link, example or more info. Do you mean something along the lines of this?. – Jakub Sisak GeoGraphics Feb 14 '14 at 14:02
  • @Jakub yes something very like that, except in order to get a bright ring you would have to stick the mask to the front element (or mount it on something transparent, like an old UV filter). – Matt Grum Feb 14 '14 at 14:06
  • I see! great idea the UV filter! so a circular sticker or a donut sticker or something like that. Thanks! Will experiment! – Jakub Sisak GeoGraphics Feb 14 '14 at 14:08
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I believe you also get this kind of bokeh if you use a mirror lens.

(Random google results:)

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