I can capture plain bokeh but I have seen some really interesting bokeh with hearts and various shapes. How does one accomplish this effect? Is it a separate lens or an attachment of some kind?
By the way, I have seen this done with a paper loop that fits around your lens and then you can tape your bokeh filter to it so you don't gunk up your lens with tape residue.
Hereis a link to a discussion on here. Also if you search www instructables.com for photography and bokeh filters you will find many different DIY ways to get the desired result.
Make your own!