Hi guys, Im having an issue with my 5Dm3 have done all that i could think of .
1) removing the battery and recharging it to full.
2) removing the CF card it doesn't shoot even if the shoot without CF card is enabled.
3) checked the MF switch on the lens .
4) changed and tried at least 5-6 diff lenses.
5) cleared all custom functions.
6) set the camera again to default factory settings.
How ever it does the following.
1) can shoot in Manual Focus Mode .
2) Can shoot auto focus in Live View Mode
3) Can Shoot in Movie Mode.
The AF only works on full automatic mode (Green Box) but AV, TV and Manual mode auto focus/blink doesnt work.