[AL-16 Bowens + aperture ring + geometric image patch]
[AL-16 Bowens]
[AL-16 Bowens+Aperture ring]
[AL-16 Profoto]
[AL-16 Profoto + aperture ring + geometric image patch]
[AL-16 Profoto+ Aperture Ring]
[AL-16 Elinchrom]
[AL-16 Elinchrom+Aperture ring]