The 3x teleconverter (also known as a tele-extender) will multiply the focal length of the existing lens by 3x, and will cut back the amount of light by 30 f/stops.For example, using a 3 teleconverter with a 300 mm lens will effectively increase the focal length to 900mm. A lens set to f/2.8 will now be f/8
Teleconverters are not recommended for lenses wider than 50mm.
This 3x teleconverter has a Prong that will only meter couple to the older Nikon 35mm SLR manual focus cameras such as the Nikon F , F2 and Nikkormat FT,FTN and FT2.
- Multi-coated elements result in crisper images