tamron 200-400 5.6 it start off nicely where my 70-210 ends and with 1.4 teleconverter gives me a 280-560 F8 lens and only 1 stop light loss
useing my 70-210 with both a 2x and 1.4x would give me 196-588 F8 more range..but more glass as well..and three stops as opposed to one stop light loss .. [img]/ubbthreads/images/graemlins/tongue.gif[/img]
I am looking at this as i said because there are some subject matter ( redwing black birds ect ) that are to far out in a marsh for the 70-210 w 2x to handel...with out the 1.4...
I am looking at the SIGMA EX APO D teleconverters...as I can not afford nikons even with help $$ wise
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