Features:

• Included accessories - Front cap (BF-3A), Rear cap (LF-1), Soft case (CL-0715)
• Supports the use of Nikon Vibration Reduction (VR) function
• Design is consistent with the current TC-14E II and TC-20E II teleconverters
• Lens construction - 7 elements in 4 groups
• Maximum reproduction ratio - 1.7

Details:
The TC-17E II teleconverter works with the AF-S and AF-I lenses. It extends the focal length by 1.7x, while still maintaining high focus. In addition, it does not have a large affect on lens speed, and is compatible with the updated VR function (as seen on professional lenses).