Originally posted by pacerr MAG, not crop. I.e., LESS than 1:1 to get back closer to FF format.
H2
The problem is, where is the TC (actually would be a WAC, I guess) going to get the information to "create" the additional FOV? Situated in between the main lens and the mount, it is hardly in the position to "see out".
That being said, you can get auxiliary wide angle lenses that screw on the front filter thread. Something like that would do what you are wanting, though traditionally, they suck.
Steve