once you put the right one on, it will rotate about the lens - this is to change the effect it has on the sky and/or reflections.
if the sun is directly above, it's not going to do anything, and it works best when you're shooting at a 90-degree angle of the sun.
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2009 135i | space grey | sport | navi | hifi | heated
dinan stage 2 software | bmw performance exhaust
kw v2 | hotchkis front sway | vmr v710
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