The Queen and other members of the Royal family have been photographed for striking "quadruple" portraits.
Photographer Hugo Rittson-Thomas used mirrors to capture full-length images of the monarch from the front, back and sides in one image.
The Duke of Cambridge and Duchess of Cornwall also posed for the photographer and all the images will form part of an exhibition.
The photographs are reminiscent of Anthony van Dyck's famous triple portrait of Charles I.
Mr Rittson-Thomas joked that when he had a problem with his camera during the shoot, it was the Queen who put him at ease.
He said: "The camera had a digital seizure but luckily I was about two-thirds of the way into the shoot but she was very calm and cool and put me at my ease.
"My brain had just frozen but she started talking to me and I was able to fix the problem in two minutes. The roles were reversed and she was the one putting the photographer at ease."
In her portrait the Queen is wearing a burgundy coloured dress, designed by her personal assistant and adviser Angela Kelly, with the Waterloo badge of the Royal Scots Dragoon Guards.
She was photographed in 2013 at Windsor Castle after her famous appearance in the opening ceremony of the 2012 London Olympics alongside James Bond star Daniel Craig.
Mr Rittson-Thomas said: "I asked if she had enjoyed it and remember her saying she did and that she enjoyed having the corgis in the shoot and how they performed very well."
Prince William, Colonel of the Irish Guards, was photographed in 2012 when he and wife Kate joined the regiment to celebrate St Patrick's Day. He was wearing his Irish Guards frock coat for the occasion.
Camilla's picture was taken earlier this year. She was photographed wearing formal attire, designed by Bruce Oldfield, together with family jewellery, on the day she gave a speech at the Royal Academy of Arts.
The exhibition, The Queen's People, will feature photographs of members of the Royal Household and senior ceremonial figures in their traditional uniforms.
It will be held at the Eleven Gallery in London from August 19 to September 19.