The legacy camera option actually uses the old camera code, which is entirely different from the new tactical camera. It is not merely the tactical camera with the "zoom removed". We kept the old camera code path around so we could easily compare the old and new systems during testing. The legacy camera option just exposes that path to users.
There are two differences between the old pre-update 46 and legacy camera options in update 46:
- The old behavior that allowed you to instantly "teleport" your camera to a new rotation is gone
- You can no longer get unbounded viewing advantage from a narrower aspect ratios
The two restrictions were put in place to disallow players to gain an advantage by using the legacy camera. However, if you are running at 16:9 aspect ratio then the second difference doesn't even apply.
Oh if we're being exact there is one more tiny difference. When you are driving a vehicle the legacy camera might allow you to see very slightly more than the old camera. This is because we found a bug in the FOV angle while driving (it was unintentionally slightly more fish eyed than the walking camera) so we fixed that and extended the camera arm out a bit.
All that said, we are looking at the feedback on the camera because even if the legacy camera is available we'd rather have everyone move to the tactical camera in the long run. This is version 1 of the new camera after all so there's bound to be issues to sort out. If players are getting discomfort with the new camera, please let us know the details so we can investigate further.