TAMRON SP F SYSTEM 2X TELE-CONVERTER for PENTAX-S - Brand: TAMRON - Model Name: 2X TELE-Converter - Compatibility: FOR PENTAX-S - Features: F SYSTEM - Lens Type: Teleconverter Thank you for viewing. I do not have much knowledge about cameras, so I am selling this as a junk item. Please refrain from purchasing if you are concerned, as this item was stored in an environment with smokers. Please purchase only if you understand that this is a junk item. Please note that the item will be shipped in simple packaging.