I've tried reading on the web about these and have confused myself even more
What I want to do is get a new lens that will take me up to 300mm. I would also like to know if the 1.4 and 2x convertors in effect multiply the whole range of a 70-300 lens. For arguments sake a 70-300 sigma lens on a 300D become a 140 - 600 by using a 2x convertor? Or are there any limitations with types of lenses that the canon convertor will be compatible with?
Although I'd love a nice 600mm lens I think the wife would kill me if I even suggested paying that sort of money!!!
What I want to do is get a new lens that will take me up to 300mm. I would also like to know if the 1.4 and 2x convertors in effect multiply the whole range of a 70-300 lens. For arguments sake a 70-300 sigma lens on a 300D become a 140 - 600 by using a 2x convertor? Or are there any limitations with types of lenses that the canon convertor will be compatible with?
Although I'd love a nice 600mm lens I think the wife would kill me if I even suggested paying that sort of money!!!