Inside the booth
Use controlled motion blur as one frame in a portrait story
Make one deliberate blur frame while keeping the other portraits readable.
Motion blur can suggest a turn, wave or dance, but uncontrolled blur across the whole strip looks like a camera fault. Reserve it for one frame, anchor the camera and keep a sharp frame beside it for comparison.
Lock the camera
Set the phone or camera on a stable support and frame the person before changing shutter speed. Take one sharp reference frame at the normal setting. This keeps movement from being confused with camera shake.
Choose the gesture
Ask the subject to move one hand or turn their head slowly through the exposure. Use a slower shutter only for the chosen frame; if the device offers live preview, take a test and shorten the exposure until the face still has a recognisable anchor.
Compare outcomes
Review the blurred frame beside the sharp reference. The intended gesture should read without losing the person’s identity. If everything smears, stabilise the camera further or reduce the movement. If nothing changes, lengthen the exposure slightly or choose a larger, slower gesture.