All airlines will instruct that *all* electronic devices be switched off, regardless of whether they actually interfere with flight electronics or not, because it is far easier to give a blanket advise then to actually say "Please switch off all electronic devices which transmits signals which may interfere with the aircraft's operations". Telling people that "cameras are ok" has the real likelihood of camera phone users insisting on switching their phones on because they are merely going to use the camera function.ok, so in the end, how true and how correct is the instruction that we have to switch off the cameras (rather than be careful of the handling of the camera) during take off and landing?
I, for one, has regularly used both consumer and DSLR on my flights, including during take-off and landing. Not a single flight attendent has ever asked me to switch them off, compared to one instance when I forgot to switch my mobile phone off and was quickly advised to do so by a watchful SQ flight attendant just before take-off.