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LONDON, ENGLAND - NOVEMBER 08: An employee poses next to a photograph by Man Ray entitled 'Glass Tears' during a press preview for "The Radical Eye: Modernist Photography from The Sir Elton John Collection" at Tate Modern on November 8, 2016 in London, England. The exhibition of Elton John's private photography collection runs from November 10 to May 7 2017 and includes works by Man Ray and Dorothea Lange. (Photo by Carl Court/Getty Images)

LONDON, ENGLAND - NOVEMBER 08: An employee poses next to a photograph by Man Ray entitled 'Glass Tears' during a press preview for "The Radical Eye: Modernist Photography from The Sir Elton John Collection" at Tate Modern on November 8, 2016 in London, England. The exhibition of Elton John's private photography collection runs from November 10 to May 7 2017 and includes works by Man Ray and Dorothea Lange. (Photo by Carl Court/Getty Images)

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LONDON, UNITED KINGDOM - NOVEMBER 08 : Tate Modern staff poses in front of photos during a press preview for Modernist photography from the Sir Elton John collection at the Tate Modern in London, United Kingdom on November 08, 2016. (Photo by Ray Tang/Anadolu Agency/Getty Images)

LONDON, UNITED KINGDOM - NOVEMBER 08 : Tate Modern staff poses in front of photos during a press preview for Modernist photography from the Sir Elton John collection at the Tate Modern in London, United Kingdom on November 08, 2016. (Photo by Ray Tang/Anadolu Agency/Getty Images)

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LONDON, UNITED KINGDOM - NOVEMBER 08: Tate Modern staff views photograph titled One of the Homeless Wandering Boys, 1934, by photographer Dorothea Lange on November 08, 2016 in London, England. The photograph is part of the Modernist photography from the Sir Elton John collection showing at the Tate Modern. (Photo by Ray Tang/Anadolu Agency/Getty Images)

LONDON, UNITED KINGDOM - NOVEMBER 08: Tate Modern staff views photograph titled One of the Homeless Wandering Boys, 1934, by photographer Dorothea Lange on November 08, 2016 in London, England. The photograph is part of the Modernist photography from the Sir Elton John collection showing at the Tate Modern. (Photo by Ray Tang/Anadolu Agency/Getty Images)

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LONDON, UNITED KINGDOM - NOVEMBER 08: Photograph of Sir Elton John, (1997) by photographer Irving Penn on November 08, 2016 in London, England. The photograph is part of the Modernist photography from the Sir Elton John collection showing at the Tate Modern. (Photo by Ray Tang/Anadolu Agency/Getty Images)

LONDON, UNITED KINGDOM - NOVEMBER 08: Photograph of Sir Elton John, (1997) by photographer Irving Penn on November 08, 2016 in London, England. The photograph is part of the Modernist photography from the Sir Elton John collection showing at the Tate Modern. (Photo by Ray Tang/Anadolu Agency/Getty Images)

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LONDON, ENGLAND - NOVEMBER 08: A general view of the atmosphere at the opening reception for new exhibition "The Radical Eye: Modernist Photography From The Sir Elton John Collection" at the Tate Modern on November 8, 2016 in London, England. (Photo by David M. Benett/Dave Benett/Getty Images)

LONDON, ENGLAND - NOVEMBER 08:  A general view of the atmosphere at the opening reception for new exhibition "The Radical Eye: Modernist Photography From The Sir Elton John Collection" at the Tate Modern on November 8, 2016 in London, England.  (Photo by David M. Benett/Dave Benett/Getty Images)