Nikon Teleconverter TC-300 2xUsed. Like new condition. Usable lenses: Lenses of 300mm and longer, plus the Micro Nikkor 200mm f 4 IF Lens construction: 5 elements in 5 groups Focal length: Double that of the lens in use; Aperture coupling range: f 2. 8 ~ f 32 Effective aperture: f 5. 6 ~ f 64; Diaphragm: Automatic Metering: Full aperture exposure measurement with Ai type Nikkor lenses CONTACT FOR AVAILABILITY AND PRICING. DISCLAIMER: In the instance that you order a specific item