-'exif-orientation-1' => 'Normal',
-'exif-orientation-2' => 'Mirrored',
-'exif-orientation-3' => 'Mirrored & flipped', // may be wrong
-'exif-orientation-4' => 'Flipped', // may be wrong
-'exif-orientation-5' => '',
-'exif-orientation-6' => '',
-'exif-orientation-7' => '',
-'exif-orientation-8' => '',
+'exif-orientation-1' => 'Normal', // 0th row: top; 0th column: left
+'exif-orientation-2' => 'Flipped horizontally', // 0th row: top; 0th column: right
+'exif-orientation-3' => 'Rotated 180°', // 0th row: bottom; 0th column: right
+'exif-orientation-4' => 'Flipped vertically', // 0th row: bottom; 0th column: left
+'exif-orientation-5' => 'Rotated 90° CCW and flipped vertically', // 0th row: left; 0th column: top
+'exif-orientation-6' => 'Roatated 90° CW', // 0th row: right; 0th column: top
+'exif-orientation-7' => 'Roateted 90° CW and flipped vertically', // 0th row: right; 0th column: bottom
+'exif-orientation-8' => 'Rotated 90° CCW', // 0th row: left; 0th column: bottom