Quote:
Originally Posted by Vernon Barker
Has anyone experience of using two 1.4 teleconverters (equivalent to a times2 TC).
Will this work or are there problems?
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I have used stacked converters several times Vernon (1.4 + 1.4 and also 1.4 + 2x) Results will much depend on the lens that you are using as will AF.With Canon bodies you must have a non Canon converter next to the body as you cannot physically connect a Canon tc onto a Canon tc because of the protruding rubber lug. I think Nikon and Sigma tc's have similar limitations.
The easy solution is to get something like a Kenko Pro 1.4 as one of the tc's - any tc will connect to that one.
You obviously know that two 1.4's will lose 2 stops and a 1.4 + 2x will lose 3 stops of light.