Schneider-Kreuznach G-Claron 270mm f9 brand_Ilford The Nikon D5100 is a

The Nikon D5100 is a compact DX-format DSLR camera that shoots 16mp stills or 1080p video at up to 24fps

two (non-Manfrotto) clamps

You'll be able to figure them out

Please note that this is not a rangefinder camera

with minor pencil and pen notations in the "Notes" section at the rear

Schneider-Kreuznach G-Claron 270mm f9 brand_Ilford The Nikon D5100 is aNot the fastest lens in the world, but this Schneider Kreuznach G Claron 270mm f9 is very compact and covers up to 8x10, which is pretty impressive. It's great for field cameras, although I suppose if you're already hauling around an 8x10 field camera, the appeal to compactness may have limited value to you. Nevertheless, this is an uncommon lens in excellent condition, with minor internal dust, no haze or fungus, a touch of the old Schneideritis