Is the X-S10 ISO different from film ISO?

[Cedjy]

I'm trying to learn the X-S10 and one thing I'm confused by is that I have to go to much higher ISO to get the same exposure as I would have with my film camera (Canon TL).

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This is a film scan from my film camera. I forget the exact settings but it was ISO 400.

This is a shot from my X-S10 with ISO 400, f8, shutter 60. Quite dark.
Viewing the same area with my film camera's viewfinder with the same settings says it should be a good exposure.
So why is it so much darker with digital?

[Olaf W.]

These photos aren’t comparable, one was taken outside and one inside. At least, you have to open the lens more inside of a room.