Bob, Thanks for your feedback. >>>Your question, largely a 1.4 converter will give you close to 1.4 increase in magnification. It might not be exactly that if you use a micrometer to measure it because the 1.4 quoted will be "at infinity focus" but I suspect any difference is trivial.<<< Pardon my confusion, there is no real gain at minimum focus? Take care, Gregory david Stempel FIREFRAMEi m a g i n g
