Nikon 400mm f2.8G ED VR AF-S Nikkor brand_Kirk they were not originally designed

they were not originally designed to cover the larger Fuji sensor so please confirm compatibility between your lens and camera body

8-4 maximum aperture in an easy-to-carry size

this one will definitely do the job

The Mamiya-Sekor C 150mm f3

The glass shows only minor dust

Nikon 400mm f2.8G ED VR AF-S Nikkor brand_Kirk they were not originally designedWhen a 300mm f2. 8 just won't do, you can turn to this Nikon 400mm f2. 8G ED VR AF S Nikkor to do the job. Yes, it's much larger and heavier, but there's no substitute for the extra reach. Fast, accurate focusing and an effective image stabilizer make this a formidable performer; glass has minor dust, but is free of haze or fungus. Minor cosmetic wear. Includes lens hood, cap, and hardcase plus a much improved Wimberley Arca compatible lens foot.