Which tele-convertor will work with both the 17-55 2.8 and the 70-200 2.8. Thanks in advance
Why would you use a teleconverter with a wide-angle lens? Specifying which brand you're talking about would also be wise, even though it can be inferred with high probability from the numbers you gave.
None, the AF-S DX 17-55mm f/2.8G F-ED is not compatible with a TC according to the manual at: http://www.nikonusa.com/pdf/manuals/lenses/DX/AFSDX17-55_2.8G.pdf
None, the AF-S DX 17-55mm f/2.8G F-ED is not compatible with a TC according to the manual at: http://www.nikonusa.com/pdf/manuals/lenses/DX/AFSDX17-55_2.8G.pdf -- [/QUOTE] Sigma makes a 1.4 and a 2.0 TC that will work.