Artificial Horizon (Virtual Horizon)
The AH feature is prevalent in aeroplanes, gliders and also on ships. The main objective being an instant cognizance of one’s orientation by a glance. It uses a gyroscope for the attitude indications.
While taking photographs, if there is a single horizontal reference that we wish to measure against, it is the visible horizon. We take the horizon to be a flat line and orient our cameras accordingly.
One may use a level tube indicator for the purpose, but it cannot be integrated into the camera. Hence, the gyroscopic sensors!
Shown above is a view though the screen of my Lenovo K6 Power’s camera, which features a AH indicator, focussed at the AH indicator on the Nikon D7200. These are useful tools when you are trying to shoot a photo with precision.
So, go ahead, switch on the AH feature on your phone, or your camera and shoot straight!
Last time, A was for Aperture!