The 1st photo is under exposed. The 2nd one is normal and the 3rd one is over exposed. This increases the DR (dynamic range) of the digital sensor by several stops or EV's (exposure value). The last shot is the stacked image from Lightroom.
The 1st photo is under exposed. The 2nd one is normal and the 3rd one is over exposed. This increases the DR (dynamic range) of the digital sensor by several stops or EV's (exposure value). The last shot is the stacked image from Lightroom.