Olympus OM System Zuiko Auto 1:1 Macro 80mm f4 Management Number C7 It is listed as Micro Four Thirds mount, but I chose it because there were no other options, which is incorrect. - Brand: OLYMPUS - Model Name: Olympus OM System Zuiko Auto 1:1 Macro 80mm f4 - Lens Type: Prime Lens - Mount Type: OM Mount - Accessories: Lens cap, box - Focal Length: 80mm - Maximum Aperture: F4 Thank you for looking. Focal Length...71-150mm Maximum Aperture...2.9-4 This is an exceptional item, almost appearing unused. There are no signs of use, and it's unlikely you'll find one in better condition. The box and manual are also included. Functionality: No issues. Lens surface: No mold, fogging, or balsam separation. While unlikely, there might be minor scuffs from cleaning. - Please note that while the item is checked before listing, oversights may occur. - Item condition is subjective. Please bid with the understanding that this is a used item. - The item has been confirmed to be in working order at the time of listing. - This is a used item. It may not satisfy those who are overly sensitive. Please bid with understanding. - Those seeking perfection should refrain from bidding. - The presence and extent of scratches, mold, and fogging are largely subjective.