When Nikon did this with the D3 and D700, many of the Nikon crowd thought it was a brilliant way to get around the issue of crop frame glass, yet i have just read several responses saying what a crap idea it is.
It wouldn't be that hard to make it a custom function, three choices: OFF, AUTO, MANUAL. problem solvered.
Originally Posted by falconeye
The danger I am speaking of is real. Unfortunately...
one more point, what danger, none (until proven otherwise when tested on a 36x24mm sensor) of the DA lenses adequately cover a 35mm frame, so no "danger."