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06/12/2007 02:45:51 PM · #1 |
i love lens flare.
why is it always different?
d50 with 50mm lens makes perfect flares, with 5 angles, several sizes but always small ones, in bright colors.
5d with 70-200mm creates one huge flare, blurred and round.
i only have these lenses and can't test more.
is the flare different with every lens?
why is it different?
thank you!!
Svetlana |
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06/12/2007 02:48:15 PM · #2 |
Yup, it is different with every lens! There are a few reasons:
- The number of lens elements
- The shape of the lens element surfaces and the position of the elements
- The shape of the aperture
- and lots more I've probably forgotten...
Edit: Lens flares happen because of internal reflections off of the surfaces of the lens elements. In essence, the lens surfaces act as mirrors. The shape and position of the mirrors determines the type of flares.
Message edited by author 2007-06-12 14:49:54. |
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06/12/2007 02:49:21 PM · #3 |
Originally posted by kirbic:
Yup, it is different with every lens! There are a few reasons:
- The number of lens elements
- The shape of the lens element surfaces and the position of the elements
- The shape of the aperture
- and lots more I've probably forgotten... |
Orbs. You forgot orbs. |
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06/12/2007 02:50:24 PM · #4 |
Originally posted by mk:
Orbs. You forgot orbs. |
Shoot! I knew I forgot something important ;-) |
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06/12/2007 02:58:15 PM · #5 |
Lens flare also varies by the angle of the light entering the lens...
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06/12/2007 02:58:40 PM · #6 |
:) thank you!
how fascinating:)
is there any rule, like a longer lens would make more blurred flare and a shorter lens more clear and sharp flare?
a wide-angle lens eg? i don't have any to try myself. |
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06/12/2007 04:15:15 PM · #7 |
| You are probably more likely to get a less-blurred flare with a lens of about 50mm, and with a prime rather than a zoom. The less elements, the more likely that the flare will be well-defined, but it's sure no guarantee. Short of mathematical modeling (ray tracing) the only way to tell is to shoot! |
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06/12/2007 04:18:21 PM · #8 |
| Mirror lenses give you doughnuts! Sitting in concrete gives you piles, or so my dad says. |
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06/12/2007 04:24:29 PM · #9 |
Originally posted by formerlee:
Mirror lenses give you doughnuts! Sitting in concrete gives you piles, or so my dad says. |
Mmmmm, doughnuts! |
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