Nikon af-s dx Nikkor 55-200mm. Please look at pictures carefully to see if this is the lens you need. Lens cap says 52mm. Do you know how I can tell the series? Nikkon DX, AF or.. What the compatible filter size is? I’m listing this for my husband and you have specific questions, please ask, I do not know even what to put for a title. This has been in a camera case for years – the outside looks like it may need cleaning or is worn. So, don’t discard anything until you are notified paperwork has been processed. Please do not ask to return this if you don’t have questions before purchasing, thanks.