What's this orange filter do?

the camera body has a Creative Effects setting for Grainy B/W which is used after shotting. I kept the orange filter on for this set, will take it off and see if the next shots are discernable different.

Photographer:
novista
Uploaded:
2016-11-12
Camera:
Canon EOS760D
Lens:
Daguerreotype Achromat 2.9/64 Art Lens
Country/region:
Australia
Albums:
Daguerreotype 2.9/64
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