Sigma DG 150-500mm f5-6.3 APO HSM OS for Nikon F brand_Epson The teleconverter makes this a

The teleconverter makes this a 1200mm f8 lens

manual or aperture-priority autoexposure

Hard to find a better deal for a full frame DSLR

A big head for larger equipment

8 with some internal dust

Sigma DG 150-500mm f5-6.3 APO HSM OS for Nikon F brand_Epson The teleconverter makes this aThe Sigma DG 150 500mm f5 6. 3 APO HSM OS is a long lens with a long name. This is a long range supertelephoto zoom lens with pretty solid optical performance. The optical image stabilizer helps keep things steady, and a large grip tripod foot makes for easy handling. In excellent cosmetic condition, with clean glass, good function. Includes hood and case.