Originally posted by henryjing I just got my new DA*55 from Adorama, and I found there is a tiny dust in it...Is that common? I think new lens shouldn't have any dust inside...
I'm pretty sure you will get another dust once you change lenses in the open air unless you put it on the camera and never remove it until the day you take it off.
We live with dust around us and we won't be able to get away with it.
I found it interesting recently that dust still can be found even inside a closed room because mostly they will be coming from our DEAD SKIN.
But if it bothers you, just go return / exchange it. I know how it feel because I did the same thing when I first got my FA43 Ltd. I inspect it more than a jeweler will check a diamond.
That's my first day with an expensive lens so it's understandable. Now I'm used to see dust in lenses so I'm usually just ignore it if it's not affecting the IQ or too big to be noticeable.
Originally posted by Wheatfield What looks like dust can also sometimes be a small bubble in the glass which is not really considered so much a manufacturing defect as just normal life with making stuff out of glass.
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Just to share my experience, I had a lens with a very tiny bubble that I found out later on. I sent it out to Pentax and they replace the lens (still under warranty). They considered it as a manufacturing defect and they're responsible for it.