jerryc41 wrote:
Wow! I have the same lens, but I've never seen that.
............
I also use that lens. Never a similar effect.
You certainly seem to have an optical flaw.
I'm not among the "Bokeh Cult" ... I even
see it as quite ridiculous, but what you've
posted is not "lousy bokeh" but rather is
likely evidence of an actual problem.
If you can replicate the effect, especially
on a tripod and using Live View, then set
the camera to "shoot without lens", then
unlatch the lens lock and rotate the lens
in the mount to see if the effect rotates
across the view as you rotate the lens. If
so, you have confirmation.
OTOH, if the effect does NOT rotate with
the lens, you just happened to record a
very weird phenomenon ... which I very
much happen to doubt is the case :-(
--------------------------------------------
BTW, if you cannot operate the Live View
with the lens unlatched and rotated, you
could test by zooming. If the effect is in
the nature of the scene and thus not due
to optics, then zooming will only enlarge
or shrink the whole image but WILL NOT
move the effect relative to any objects in
the subject scene.
If it's an optical effect, it might grow or
shrink when zooming, but the center of
the effect should not relocate relative to
a fixed object in the scene.