A BBC crew used a Canon EOS 7D DSLR to record a road trip from San Francisco to the Consumer Electronics Show (CES) in Las Vegas.

BBC Technology correspondent Rory Cellan-Jones spoke about the project to Amateur Photographer while queuing to register for entry to CES last week.

Rory explained how his cameraman Steve Adrain had attached the 7D to their car?s dashboard after visiting software companies in Silicon Valley, California, before heading to Nevada.

?[Steve] set it to take a still every six seconds as the sun set over the freeway south,? Rory wrote in his BBC blog published the next day.

?He left it on a fixed aperture, so that as the light faded, the exposure got ever longer. Jonathan [Sumberg – the producer] and I got rather impatient with the constant clicking for four hours, especially when it continued through our rest-stop at a fast food outlet.

?But I think you will agree that the resulting time-lapse sequence is pretty stunning.?

The BBC man added: ?It set us talking about what has happened in camera technology in recent years. You can now capture HD video on a whole range of devices ? from the top end broadcast cameras through Digital SLRs right down to smartphones.

?And the gap in image quality between a £10,000 camera and a £250 one has got a lot smaller.?

It seems the BBC has also been experimenting with Sony?s NEX-5N compact system camera for shooting video. See http://vimeo.com/33429338