I bought a 2nd hand Sigma 50mm f/1.4 on ebay. Its literally new, and boxed, all papers inside crisp.
It was advertised as having a singl piece of "dust" inside. Which doesnt affect the images as it is be beyond the resolution of the lens. So I managed to get it half price. Which is a damn good deal.
It arrived today. And I had a look. The "dust" is a small, tiny dead bug!! WTF. on the inside of the front element....WTF??
Anyway, as described, it doesnt affect the iamges at all. And Im really happy to have got the Sigma 50mm 1.4 literally new for half price. Now the question is.... will this bug cause me future problems? like is it gonna come off the front element? What if it then get to the inside of the back element? will that cause serious problems?
the bug is really small. about 1.5mm in length.
Shall I keep it? Or sell it?