What does "viewfinder" mean?

A device on a camera that shows what will appear in the field of view of the lens; it helps the user target a subject, zoom and focus the image.

How do you pronounce "viewfinder"?

Pronounced //ˈvjuːfaɪndə(ɹ)//.

Common synonyms include: finder, digital viewfinder, electronic viewfinder, equipment, framing window, photographic equipment.

/ˈvjuːfaɪndə(ɹ)/ noun

noun ·Rare ·Advanced level

Noun

1
A device on a camera that shows what will appear in the field of view of the lens; it helps the user target a subject, zoom and focus the image.
2
optical device that helps a user to find the target of interest wordnet

"He looked through the viewfinder, zoomed in and panned across the area."

From view + finder.