idea 03 · needs institution photos
Before and after slider
Drag a handle between an object before treatment and after it.
Rijksmuseum, Operation Night Watch
The largest research and conservation project ever run on Rembrandt's painting produced 12,500 high-resolution images under infrared, ultraviolet and raking light, and the varnish came off in a glass chamber in front of the public.
https://www.rijksmuseum.nl/en/stories/operation-night-watchConservation
Before and after treatment
Twilight in the Wilderness, Frederic Edwin Church (American, 1826–1900). Cleveland Museum of Art, CC0. The left half is the same photograph with a varnish filter over it, standing in for the treatment photograph you have not sent yet.
Drag the handle, or use the arrow keys after tapping it.
The slider is real: pointer drag, pointer capture so it survives a fast swipe, and arrow keys once it has focus. What is standing in is the left image, which is the same CC0 photograph with a varnish filter. Send two real treatment photographs and the filter comes off. Nothing here pretends to be a conservation record.