Digital Photography On Aircraft Not Permitted on Take Off or Landing

I was on an Air New Zealand flight a while ago, and I started to take a few
pics (from my digital still camera) as the aircraft took off. An air hostess
politely told me that the use of electronic devices was not permitted during
take-offs or landings. I told her that I was using a dedicated still digital
camera and not a camcorder, but she still asked me to turn it off. About 10
minutes later, when land was well out of sight, we were able to turn on our
"electronic devices". But about 10 minutes before landing, while still over
the sea, all electronic devices had to be turned off again. The only
worthwhile photography from this flight was during the first and last 5
minutes of the flight, and this would apply to many other flights that I
have been on.

Now I know that the use of camcorders has been banned during take-offs and
landings, but I didn't know that digital still cameras now suffered this
fate. My digital camera can't take movies, but I know that a lot of digital
still cameras can also take movies. From a practical point of view, does
anyone know whether digital cameras really CAN interfere with an aircraft's
navigation systems? Are airlines being a little too cautious with regard to
the use of digital cameras and camcorders?

About 5 years ago, nobody cared when I used my camcorder or digital still
camera during take-offs or landings, and there were no reports then of
interference with the aircrafts' navigation systems! So what has changed
during the last 5 years?

Podge