Sigma 50-150mm F/2.8 EX DC Lens for Nikon
This large aperture medium telephoto macro lens incorporates Sigma’s original Optical Stabilizer function. SLD glass elements provide excellent correction of all types of aberrations. Super Multi-Layer Coating reduces flare and ghosting and a floating inner focusing system provides high optical performance from infinity to 1:1 macro. The Hyper Sonic Motor ensures quiet and high speed autofocus as well as full-time manual focusing capability. Attaching Sigma’s optional Tele Converters enables photographers to shoot large than 1:1 magnification.
This telephoto macro lens has a longer working distance than traditional macro lenses. It is perfect when distance between the subject and photographer is important such as when taking pictures of small animals or insects. The long focusing distance and narrow depth-of-field allows selective focusing and less distracting backgrounds. This lens can be used as normal telephoto lens as well.
Three Special Low Dispersion glass elements provide correction of various aberrations. This lens has superior peripheral brightness and its distortion is corrected effectively. The Super Multi-Layer Coating reduces flare and ghosting and provides sharp and high contrast images even at the maximum aperture.
A floating inner focusing system moves two different lens groups in the optical path to different positions. This system compensates for astigmatic aberration and spherical aberration and provides extremely high optical performance from infinity to 1:1 macro. The overall length of the lens does not change during focusing, ensuring convenient handling. The lens incorporates Hyper Sonic Motor, ensuring high speed and quiet AF as we as full time manual focus capability.
This lens has a rounded 9 blade diaphragm which creates an attractive blur to the out of focus area of the image. The addition of Sigma’s optional 1.4x EX DG APO and 2x EX DG APO Tele Converters produce a 210mm F4 AF telephoto macro lens* or 300mm F5.6 MF telephoto macro lens respectively. Use of Sigma’s teleconverters allow photographers to take pictures with 1:1 magnification but with a greater distance between the lens and subject. Tele Converters can also be used to enlarge the maximum magnification ratio by 1.4 times or 2 times.