I've had DP/DR issues since I was 13 years old. Over the years I've had it on an off but I find that during my episodes I can't really remember what is normal or having emotions. But I know I've had them based on things I've done throughout my life, like you said with the pictures. Its very weird. Maybe we just can't remember we've had normal emotions while we are "in the zone of derealization/depersonalization" episodes.