About teleconverter

[skysaw]

if i buy a Tamron teleconverter for my 350D, can the converter join my EF lenses?

[aphis]

for companies like Sigma and Tamron, their teleconverters will available for every most type of camera or mount.

[o_buy]

if i buy a Tamron teleconverter for my 350D, can the converter join my EF lenses?

i think can't attach EF-s lenses only...am i right ?