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Hi Michael,

A great effect my friend.

Plenty of science involved with your results here.

Quick review:

1] F/11 caused the diffraction pattern from the iris blades (the ray effect) of the lens

2] The branches/leaves added to the effect by also interfering with the Sun light as it passed though the region

3] The bright Sun caused the coatings to show internal reflections across many of the internal elements

Despite the intense light, the metering averaged the area of the entire scene , providing a reasonable exposure.

Now, in my lab, I test camera/lens systems using high intensity lights to duplicate what you have done here. This way, I can trace the weak links in the system , like the coatings, internal baffles, mounting schemes for the optics, the optical material itself to name a few points of study and analysis. All part of a fun day at the lab !

Best Regards, Mike

Until now, my knowledge of the cause of lens flare was very rudimentary - shooting into a bright light.  Your expertise has expanded my knowledge considerably.

Most gratefiul,

michael

What fruit is this that on yon branches grows?

Wonderful result, Michael.

--Lannie