Nikon 800mm f5.6 ED AI-S Nikkor brand_Arri This isn't a big PB-series

This isn't a big PB-series bellows: it's tiny

it also has a fast f4 constant aperture and Canon’s premium L-series optics

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heavy portrait lens with a fast f1

Nikon 800mm f5.6 ED AI-S Nikkor brand_Arri This isn't a big PB-seriesThe Nikon 800mm f5. 6 ED AI S Nikkor is a big lens, and I do not think that it is possible to use it without a tripod. It is half a metre long and weighs 5. 6kg, and that's not even counting the metal hood. However, if you need a lot of telephoto reach, there's not much out there that will do a better job. 800mm at f5. 6 is fast, and this lens also includes a TC 301 2x teleconverter to make this a 1600mm f11: also great. Sharp as heck. Clean optics,