If it's a new
I2 and the camera won't look straight after doing all the cals, then it's potentially something that your dealer or DJI would need to look at/fix as there's no offset correction that's available for the user to set. I had that issue with the first Phantom 4 I had and the dealer replaced it as DOA within the first couple of weeks.
If it's only arisen after a firmware update and you can't get the camera to go straight, then you can try ta couple of things (if you're happy to do firmware related stuff):
1) First try to Refresh the firmware to the latest version - you may need to use Assistant 2 to do that. I've had one occasion where I had to run the update a couple of times because it failed to update something the first time round. If you've done the firmware updates without the camera attached, then there may be a firmware version mismatch - but it should tell you if that's the case.
2) if that doesn't make it any better, then try downgrading the firmware and app to the previous version of firmware/software. You can either do that via assistant 2, or via your tablet (long press on the triple - at the top right of the go fly screen in DJI Go brings up the firmware loader page - if aircraft is powered on and connected, it shows the aircraft firmware that's available, if the aircraft is powered down and the RC on, then it shows the RC firmware available.)
I don't know if the problem is with the gimbal or with the aircraft in these cases, so they may want both returning
To get you out of a hole if you need to go shoot something before you can get it fixed, then before flying set the camera to look forward by putting the gimbal into free mode, then visually repositioning it forwards by looking at it's alignment and using C1+left wheel, then setting the gimbal mode back to follow (without reseting the camera position). That way the camera will track the aircraft's heading - but remember that it you use the option to reset the camera position, it will be out of line with the nose.
BTW people, please do the calibrations in the order stated:
- IMU (when aircraft cold - if you do it when warm , then you'll have to wait longer for everything to warm up to the temp it was at when calibrated every time you power it on )
- Compass
- Gimbal
The camera gimbal (i think!) uses both the IMU readings and the compass readings to orient itself and know where it's meant to look - it certainly seemed to use them all on the Phantom