"photo backdrop" is correct and usable in written English.
You can use it to refer to a large, often decorative, sheet or panel with a design or pattern used as a background for taking pictures. For example, "We used a colorful floral photo backdrop to take our wedding photos."
Look at the 90s school photo backdrop; look how modern her dress is.
The artificial environment plays an important role, particularly the photo backdrop (of an empty pool) behind which the dancers can hide.
In Hong Kong, bad air quality and poor visibility has led visitors to pose for photos in front of a photo backdrop of the city's skyline.
From 2002 to 2006, this renowned wedding- photo backdrop and Brooklyn humidifier -- its jets shoot water 20 feet in all directions on windy days -- underwent a $1 million renovation.
Gong! Afterward, the mothers were invited to "grab your new best friend for a picture in the couples photo booth!" Two women who'd bonded over the Cry It Out philosophy jumped in front of the sequinned photo backdrop.
Its harmonious rhythm of arches and curved bulwarks is echoed just a bit farther downstream in the corkscrew-shaped cylinder of steel designed by Dominique Perrault for the Puente de Arganzuela, the new bridge that is rapidly becoming Madrid Rio's most popular photo backdrop.
They used to use photo backdrops, which they'd draw over and cartoonify.
The most popular photo backdrops seem to be the off-balance rotating orange and gray chairs, designed by Thomas Heatherwick.
I know all too much about how I have aged, but memories of winters past inspired a pilgrimage to my photo backdrops: Riverside Park, Bleecker Gardens, Washington Square and Morningside Park.
It's become so commonplace to take photos of what we're eating that restaurants are optimizing their tables and food presentations for Instagram, and home good manufacturers are designing plates that double as photo backdrops.
Tuileries Garden and the neighboring Seine provide remarkable photo backdrops.
