The diaphragm-control ring turns smoothly and accurate. The focusing is smooth and precise. This time is approximately, some delays are possible. Please be patient and wait, until Your item arrived. I made mistake in listing.Item/s was/were damaged in the time of delivering your item/s. If you have a problem with your item. I will try do everything we can to resolve the issue. Thank You for visiting my pages! This item is in the category "Cameras & Photo\Lenses & Filters\Lenses". The seller is "rarerussianlenses" and is located in this country: UA. This item can be shipped worldwide.