Forum: Pentax SLR Lens Discussion
10-04-2009, 10:40 PM
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Hi Donna.
If you can't see anything on the TC, check the lens it attaches to.
You may be able to see a speck of something stuck on one of the elements causing this.
Doesn't look like it's on the sensor (I'm assuming you're shooting with a dSLR) but it's worth having it checked if you can't find the culprit elsewhere.
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