There is “one” rule on any movie set in the world – NO PHOTOS. If you are a movie Extra DO NOT bring a camera onset and do not take out your mobile phone and start snapping photos. In America I have heard stories of the Director storming up to the movie extra taking the camera and smashing it on the ground – then telling the Extra to get off the set and reinforcing this by having security escort the movie Extra out, without pay. Extras are the main photo snapper with there mobile or small digital camera.
You never get the film crew or any member of the production staff taken any photos. There could quite easily but they know if they are caught they will get fired on the spot. In my day the cameras were that big and very few members of the film crew had still cameras and the extras could not afford to by them.
I worked as a motion picture stills photographer most of my life as well as a cinematographer/gaffer etc. The only time I could take the shot was when the Director was there or if you were off the film set, photo section was set up by a production member of staff working under the supervision of the director and in coordination with the art director and the publicist, the publicity designer develops, coordinates, facilitates, and oversees the design of publicity materials including posters, promo shots etc.
Most of my still photography work as been taken over a span of 40 years with large format, medium, and 35 mm cameras and now digital, in black and white and colour. Some of the shots in black and white film were copied, with a digital camera, inverted the tones in Photoshop and produced positive, the rest black and white images are ok.
All my black and white images are all taken in the early 60’s and up to the present day. Some of the early colour work had to copied in the same way. Most of them were taken off the film set or before or after the day shooting. Because if you worked for a film company the photos you tuck in the working day belonged to the film company not you.