Hello, I wanted to ask me if anyone has tried the 5d or 7d with a 1.5 teleconverter and live in Af. Does it work? The Quick AF lenses with probably not more than 2.8 Aperture? In my case it would indeed being considered for the Tamron 18-270 f/3.5-6.3.
Antwort von Burner87:
ssder 5D you can use the Tamron at all, since it is only for APS-C sensors b) the Tamron is not thought to use a converter. If the converter passes the Aperture s.die camera, the AF is about Aperture 4 is not at all. -> This is very early in this lens. If he does not pass you would be an extremely slow and have little unerring AF. (No preference which AF) c) What's more, that the picture quality will be bad.
I know your purpose, but the Tamron + Converter can forget you. Converter provide only fixed focal length and zoom lenses have good good results.