You asked

What is 50mm on the sony zv e10 in full frame?

50mm on the Sony ZV-E10 (APS-C) gives the view of 75mm on full frame.

The same view on every common format:

Crop factors are by the sensor diagonal, rounded as they're usually quoted; a format with a different shape (4:3 against 3:2) frames a little differently across the width. More in the focal length converter.

Computed from the sensor sizes, not written by a model.

Full frameAPS-C (yours)Same lens: APS-C frames 1.5× tighter
The same 50mm lens on APS-C and on full frame.
50mm on full frame · 40°50mm on APS-C · 27°
How wide 50mm sees on each.

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