http://www.nikonchat.com/nikon-camera-doubler/
what’s the best doubler for a camera ?
i have a nikon D200 and im looking to get a Doubler for it . whats the best brand to buy for a doubler.
The doublers made by Nikon are of course designed for Nikon lenses. In addition, doublers are only designed for certain lenses.
Sample:
http://www.nikonusa.com/Find-Your-Nikon/Product/Camera-Lenses/2130/AF-S-Teleconverter-TC-20E-II.html
You will see that only certain lenses will work with the 2x teleconverter.
*Autofocus not possible with, AF-S VR Zoom-NIKKOR 200-400mm f/4G IF-ED, AF-S NIKKOR 300mm f/4D IF-ED, AF-S NIKKOR 500mm f/4G ED VR, AF-S NIKKOR 500mm f/4D IF-ED II AF-S NIKKOR 600mmf/4G ED VR, AF-S NIKKOR 600mm f/4D IF-ED II and AF-S VR Micro 105mm f/2.8G
Generally lenses that are not at least f/2.8 and longer than 200 mm it is not recommended you use them
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