Diaphragm blades hasn't any oil or other problems. If You have any question, don't hesitate! All you can see on the picture will be included in a set of a package. Please refer to the pictures for more details. Check out my other ads.This item is in the category "Cameras & Photo\Lenses & Filters\Lenses". The seller is "antikvarom" and is located in this country: UA. This item can be shipped worldwide.