ouverture_verticale = float, min = 0.0, def = 42.0
ouverture_horizontale = float, min = 0.0, def = 0.0
rapport_ouverture_x_sur_y = float, min = 0.0, def = 0.0
plan_focal_proche = float, min = 0.0, def = 0.05
plan_focal_lointain = float, min = 0.0, def = 452
marge = float, min = 0.0, def = 4.0