Nokia apologises for 'faked' Lumia smartphone advert

This close-up of the footage reveals that a cameraman
was using a different device

Nokia has apologised after it emerged that an advert featuring video footage which appeared to have been filmed with its new flagship smartphone had in fact been created using different equipment.

The Verge tech site revealed the issue after it noticed a window reflection revealed a cameraman holding what appeared to be an SLR camera.

In a blog post the handset maker said it should have "posted a disclaimer".

The news threatens to take the shine off the launch of the Lumia 920 phone.

Investors had already shown doubts about whether the Windows Phone 8 handset could revive the Finnish company's fortunes, sending its shares nearly 8% lower on Wednesday.

In Thursday's trade the stock fell a further 6%.