Nikon TC-14E III vs. TC-14E II specifications comparison:
| Nikon TC-14E III (new version) | Nikon TC-14E II (old version) | |
 |  | |
| Lens design |  |  |
| Lens construction | 7 elements in 4 groups | 5 elements in 5 groups |
| Minimum focus distance | Same as that of a prime lens | Same as that of a prime lens |
| Maximum reproduction ratio | Approx. 1.4x that of a prime lens | Approx. 1.4x that of a prime lens |
| Diameter x length (distance from camera lens mount flange) | 64 x 24.5mm | 66 x 24.5mm |
| Weight | Approximately 190g | 200g |
| Price | $496.95 | $499.95 (grey market: $399) |
Nikon USA lists the new TC-14E III to be compatible only with the Nikkor 400mm f/2.8E FL ED VR lens which obviously a mistake. Here is a quote from Nikon UK:
Compatible lenses: the AF-S Teleconverter TC-14E III is compatible with a wide range of Nikon’s AF-S NIKKOR lenses, including: AF-S VR Micro-NIKKOR 105mm f/2.8G IF ED¹, AF-S NIKKOR 200mm f/2G ED VRII, AF-S VR NIKKOR 200mm f/2G IF-ED, AF-S NIKKOR 300mm f/2.8G ED VR II, AF-S VR NIKKOR 300mm f/2.8G IF-ED, AF-S NIKKOR 400mm f/2.8E FL ED VR, AF-S NIKKOR 400mm f/2.8G ED VR, AF-S NIKKOR 500mm f/4G ED VR, AF-S NIKKOR 600mm f/4G ED VR, AF-S NIKKOR 70–200mm f/2.8G ED VR II, AF-S VR Zoom-NIKKOR 70–200mm f/2.8G IF-ED, AF-S NIKKOR 70–200mm f/4G ED VR, AF-S NIKKOR 200–400mm f/4G ED VR II, AF-S VR Zoom-NIKKOR 200–400mm f/4G IF-ED, AF-S NIKKOR 800mm f/5.6E FL ED VR², and the AF-S NIKKOR 80–400mm f/4.5–5.6G ED VR².
¹ AF not possible.
² Can be used when attached to f/8-compatible camera body
