Quote:
Originally Posted by hotspur
RE-TC,those 1.4 TC if I used one on my 400 mm L prime,would the AV go to F 8 and would it still AF?
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That's right Chris. If you used the 1.4x on your 400mm f/5.6, you would have max apperture of f/8, and no AF on regular bodies.
Cheers,
Jason.