Well.... I gave it a go, and you're right, getting the hole small enough apparently takes a bit more manual dexterity than my hands can come up with. I made a basic heart shape (more of a lopsided blob actually) and ended up with kind of lumpy-gravy-looking bokeh, but most of my photo was vignetted by the filter so the effect just wasn't as good. BUT the theory is sound, and I have a nice filter device all ready and waiting for my nifty-fifty which I'll be likely getting myself for Christmas.
Already I'm thinking snowflaky bokeh might be pretty.
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-- Canon Rebel XSi
EF-S 18-55mm IS "kit" lens, 50mm "nifty fifty" prime lens, EF-S 55-250 IS Telephoto lens
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