Originally Posted by
mdarnton
Take it apart and clean it yourself? It's not too hard, usually.
Unscrew the front half, the part in front of the diaphragm/shutter, and on the back you will most likely find an external retaining collar that you can remove by hand. Remove that and use a small suction cup to pull out the exposed element straight out. It will bind in place if you let it tilt.. Clean that, clean the back of the front element, put the loose one back in, bevel side out, and replace the ring. It's usually just that easy. The only rough part may be that the fit of the back element is tight, so you need to be patient and careful getting it out, and not force getting it back in, but make sure it's going in perfectly straight, not canted.
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