Talk:Sortie/@comment-27672683-20160211053853/@comment-85.72.41.63-20160211160501

As far as I can see, lenses turned into not repeatable drops and after you receive them once, they are replaced by packs of fusion cores. Check boxes are informing you about the drops you have already claimed and cannot be dropped again.

Lenses, warframes and weapons parts and cosmetics fall into this category. Check the chapter Rewards above in the article as it is refreshed after the latest updates.