Its bizarre when officials get upset by it. I have been told off several times. The officials at LGW get very upset by you taking photos from the Tarmac. One cabin crew member on a bmi embrear git very officious about it saying that a digital camera inteferes with the flight deck. My policy now is to hide tha camera till the crew are snuggly strapped in! There may always a risk if a jobsworth on board