The Carl Zeiss Otus Apo Sonnar 100mm f1.4 ZF.2 T is a huge, fast short telephoto lens for Nikon F mount. It weighs almost a kilo and a half, and it's more or less the size of a Mason jar, although with better optics This is a showpiece lens, designed for maximum performance throughout its aperture range, and it definitely delivers. In excellent condition, with clean glass, smooth focusing, and a good diaphragm. Includes matching Zeiss T* UV filter and hood. A rare beast in excellent condition.