I have today ordered a Sigma 1.4x DG convertor APO. Maybe a bit too late I double checked the spec on the Sigma web site (after ordering - foolish I know!). See
http://www.sigma-imaging-uk.com/acce...-converter.htm
I am concerned about where it says thay this converter is specifically for the 2 Sigma lenses mentioned. Does this imply that it will not work with my Bigma and my other Canon lenses or merely that it will not AF with other slower lenses.
Will it AF with my Sigma 105mm Macro. Although I have bought it specifically for use with the Bigma, knowing that I will lose AF, I would like the versatility to use it with my other lenses.
Also, though not important, can this converter be used with EF-S lenses?