FIL (Me and DP aren't married bit for easiness we'll call him FIL) persistently argues with me about having my photo taken.
It sounds petty but as a child/teenager/adult i have always had 'issues' and eating disorders and generally hate the way i look so avoid photographs like the plague. its not for attention, I genuinely dislike the way I look and yes, i do regret not being able to just pose for a picture. DD is 6 months and i only have about 5 pictures of us together. FIL (80) is a former film and TV director and refuses to believe that I don't like posing for photos and argues with me every time i see him about it. Eg, "For someone who doesn't like having their picture taken you take a lot of pictures" 
"You must like it"
"Why are you being so aggressive about not having your picture taken/" 
"I'm just trying to capture this intimate moment between you both" the moment you point that fucking camera in my fucking face it ceases to be an intimate moment for me
I know he doesn't know about my past but what pisses me off is the way he believes it is his RIGHT to take my photo and the fact he cannot believe that I don't like it and will argue about it when its my choice!
I have spent an average of ten minutes each time he comes over trying to defend myself about it and it really pisses me off.