Sigma 300mm F/2.8 Overview

The Sigma APO 300mm f/2.8 EX DG HSM lens is an ultra compact Apochromatic telephoto lens with a fast f/2.8 maximum aperture, and incorporates two Extraordinary Low Dispersion glass elements to reduce chromatic aberration to a minimum. It incorporates internal focusing which enables responsive and fast autofocus speed. A detachable tripod socket and rotatable drop in filter holder are also included.

The improved DG lens design corrects for various aberrations. This lens is specially coated to get the best color balance while cutting down on ghosting caused by reflections from the digital image sensor. The lens provides the utmost correction against lateral chromatic aberration which is a serious problem for digital SLR cameras.

With the use of the optional Sigma APO teleconverters, this lens can be used as a 420mm f/4 AF ultra-telephoto lens with a 1.4X EX teleconverter, or a 600mm f/5.6 AF ultra-telephoto lens with a 2X teleconverter.

Note: HSM lenses, while able to manually focus with all Nikon F-mount cameras, will not autofocus with certain older film AF cameras. This is the same limitation as with Nikon’s own AF-S lenses. Incompatible models are: N60, N55, N8008/s, N6006, N5005, N4004 & N2020.

Hyper Sonic Motor for quiet & smooth AF with fulltime manual focus override

Two ELD glass elements reduce chromatic aberration to a minimum and also ensure sharp, quality images of high contrast

Internal focusing with a non-rotating front

A drop-in 46mm filter holder in the rear part of the lens barrel can be rotated to facilitate the use of filters, including a polarizing filter

Removable tripod collar

Built in front protective filter

The rounded 9-blade diaphragm opening makes out-of-focus elements appear more natural