"When I saw how my first now and then photo turned out, I felt really connected to the image that my grandfather had taken," Mr Smith said.
"It's like a little window into the past.
Mr Smith, better known to the online community as 'therealpetesmith', has created more than 200 images for the Now and Then project across series 1 and 2.
He will be a guest speaker at the Museum of Sydney, on June 24, to open an exhibition of ABC Open Now and Then images from around Australia.
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