Pentagon Bokeh? Kind of cool. Took this while out with a friend. I suppose that the 50mm lens is going to produce a different type of bokeh than my 18-55mm? I’m just guessing that, I don’t know how these things work (yet).
I just happened upon this after reading up on lenses and bokeh, and I figured I’d share my super-non-expert knowledge even if I am a random Tumblr stranger:
I bet this was taken with something like a Canon EF 50mm f/1.8, which has 5 non-rounded blades in the aperture diaphragm. That kind of 5-blade setup tends to produce pentagons. (Pretty logical, I guess.)
And if it’s the Canon 18-55 kit lens, it has 6 rounded blades, I believe. So yeah, you shouldn’t see anything like this with that lens, just the usual circle-ish stuff (and some subtle rounded hexagonal things).
I think super-serious photographers don’t want a lens that gives this kind of odd bokeh effect, from what I’ve read, but I think it’s kind of neat. (Plus that 50mm 1.8 is really pretty excellent for ~$120 new, making it Canon’s cheapest EF lens, so it’s hard to complain about it!)