http://www.nikonchat.com/nikon-kenko-teleconverter/
Should I get a teleconverter Kenko or wait for a nikon teleconverter?
I have a D80 70-200mm 2.8 and I want a 2x teleconverter (the only way economic to have a 400 mm) Should I get a teleconverter Kenko $ 80 or wait for the tcIII nikon goes for $ 600? Why the Nikon costs more? Is it true that the quality much better?
If I do not really much difference between the two tele probably will not notice the soft edges and good color separation. I'm really surprised that he would spend more than $ 1,500 a goal and then they want to degrade converter peep. save good money to use a 200-400 mm f / 4 instead of putting my 70-200 mm f / 2.8 at the end of a TC-20E III. Yes, it cost ten times, but much less expensive than the 400 mm f / 2.8
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