On stage, the lighting designer is effectively choosing the look of every photo. Strong front light gives clear faces. Heavy coloured washes or haze create mood but can hide detail.
Talk to your lighting tech
If you want clear photos of faces, ask for some front light on key routines. Even a small amount makes a big difference.
Avoid flash
Flash distracts dancers and flattens stage lighting. A good stage photographer works with the available light instead.