when looking at long exposure shots (where the aperture is stopped down fairly much), does the number of starbursts in distant lightings indicate the number of blades used in the lens?
bokeh'ed Member 111 posts Joined Jun 2005 More info | Sep 23, 2005 20:44 | #1 when looking at long exposure shots (where the aperture is stopped down fairly much), does the number of starbursts in distant lightings indicate the number of blades used in the lens?
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FutureBlues Member 158 posts Joined Jul 2005 More info | Sep 23, 2005 23:07 | #2 I thought so too because I was seeing a lot of 8 bursts on my 50mm 1.4 which is the number of blades, but I've also seen some 10 bursts, so it can't be just that.
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davidfig we over look the simplest things  3,275 posts Likes: 85 Joined May 2005 Location: Fremont, California USA More info | Sep 23, 2005 23:17 | #3 Yes you are right. I assume the burst are from the corners of the openning. 5D | 17-40L | Tammy 28-75 2.8 | 28-135 | 50/1.8 | 85/1.8 | Sony A6000 2-Lens Kit | SEL35 1.8 | EF 50 1.8 on NEX as my 75mm 1.8
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jyrgen Senior Member  259 posts Joined Aug 2003 Location: Estonia More info | Sep 24, 2005 04:29 | #4 I believe if a lens has even number of blades, the number of starbursts equals the number of blades, but if a lens has odd number of blades, then the number of starbursts is double the number of blades. Canon 35/1.4 | Canon 50/1.4 | Canon 135/2 | Canon 17-40/4 | Canon 24-105/4 | Canon 70-300/4.5-5.6
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willg Senior Member  895 posts Joined Mar 2005 Location: Decatur, IL More info | jyrgen wrote: I believe if a lens has even number of blades, the number of starbursts equals the number of blades, but if a lens has odd number of blades, then the number of starbursts is double the number of blades. i've heard that too..my tamron has 7 blades and it makes really nice stars 5D, 300D, Tamron 17-35mm f/2.8-4, Canon 70-200mm f/4, 135mm f/2, 24-105mm f/4, 50mm f/1.4, Sigma ef 500 dg super, Canon 580EX
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any explanations behind the logic?
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Tyger Goldmember  1,295 posts Joined Jul 2005 Location: toronto, canada More info | Sep 25, 2005 00:25 | #7 I was wondering the same thing, as discussed on a previous thread..... Gear List
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