I was using this with a K-5, but I'm selling it because I'm replacing my camera. There appears to be some white dust inside the lens (see photo 4). Please confirm. I was using a Marumi protective filter, so I will include it with the sale. This is a used item, so there may be scratches and dirt from use and storage. Please consider this before purchasing. Please refrain from purchasing if you are overly concerned about these details. Shipping will take 4-7 days, but I usually ship on Sunday mornings. If you purchase by 6:00 AM on Sunday, I will ship it on Sunday morning. If you purchase after 6:00 AM, it will be shipped the following Sunday. If you have any questions, please feel free to comment. ^_^ I am also selling many other PENTAX products! Please take a look at my profile. m(_ _)m I will offer a discount for combined purchases, so please feel free to ask. ^_^