Inside the booth
Make a deliberate silhouette in one photo-strip frame
Turn a backlit pose into a clear shape rather than accidental underexposure.
A silhouette uses a bright background and a darker subject to emphasise outline and gesture. It works when the pose has visible gaps between arms, face and body; otherwise the person becomes one indistinct shape. Reserve one frame for this effect.
Choose the outline
Place the subject before a bright window or steady background light. Ask for a profile or a gesture with clear space between arms and torso. Avoid clothing and props that merge into one large dark mass.
Expose for the background
Tap the bright area or lower exposure until the background retains some detail and the subject becomes a clean dark shape. Keep the camera steady and take a test before continuing the strip.
Check recognition
Review the outline at the intended print size. If face and hands disappear, shift the pose or add a slight side light. Keep only one silhouette frame if the rest of the strip is meant to show expressions and eye contact.