Conversion factors:
- 1.4x the focal length (e.g. 100mm lens with this mounted becomes 140mm effective)
- one additional stop effective aperture (e.g. f/4 becomes f/5.6)
Optic design:
- 6 elements in 4 groups
- 1 aspherical element
- Fluorine coated
Supported Lenses:
- 70-180mm f/2.8
- 70-200mm f/2.8 VR S
- 100-400mm f/4.5-5.6 VR S
- 180-600mm f/5.6-6.3 VR
- 400mm f/2.8 TC VR S
- 400mm f/4.5 VR S
- 600mm f/4 TC VR S
- 600mm f/6.3 PF VR S
- 800mm f/6.3 PF VR S
- Not compatible with FTZ adapter
Focus:
- Lens maintains original focus distance when mounted
Size and weight:
- 0.8" (18.5mm) long
- 2.9" (72mm) diameter
- 7.8 ounces (220g)
Price: US$549