I have the type II versions of these extenders and would like to know, exactly, what is the "seemless functionality" these new models offer?
I would assume, "microcomputer controlled" can not change the basic optical limitations of any extender (reduction of maximum aperture and magnification of any optical errors in the lens it is used with).
The camera body "knows" which extender is being used when type II extenders are attached to it and reflects their presence in the maximum aperture that may be used. The loss of light is dealt with by the camera's metering system as it would be with any light-reducing situation. If the extender's use results in a maximum aperture beyond f/5.6 then manual focusing must be used (with the 5D and 10D, anyway).
Are any of these things different now with the type III extenders?
Log in Register
Your B&H Photo login also works for B&H Insights! After your first login you will be able to create a username.