Purple flare: Causes and remedies

Started Mar 1, 2013 | Discussions thread
richarddd Veteran Member • Posts: 3,102
Re: Excellent!

Surefoot wrote:

kenw wrote:

It is hard to say for sure, but I'm noticing in the "purple orbs" examples I think most of those blobs show aperture blades which means they are reflections past the aperture stop and jive with my half-baked theory...

My thoughts exactly, all purple orbs i get are clearly shaped like the aperture. This dismisses the theory of reflections forming up in front of it. Also the tests from Anders show it's clearly reflections with a specific wavelength, which really makes me think of either a rear element coating problem, and/or a sensor tuning that amplifies this wavelength specifically...

I'm getting purple splotches that are not orb shaped. For example (detail from larger image):

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