If you're a photographer, chances are you're at least somewhat familiar with the word "bokeh". Originally a Japanese term for how lenses render the out-of-focus parts of an image, it's rapidly turning into the latest photography buzzword. Most people have little idea of what bokeh really means, though, thinking that any kind of blurry background is "good bokeh." If they knew just slightly more, they might think it's just a matter of having enough iris blades to make a reasonably circular aperture. It turns out bokeh is...
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