# Formulas with complete sign conventions for spherical mirrors and thin lenses

I'm looking for two things:

1. Something like the third equation in the chosen answer in the link, but for spherical mirrors, and
2. Something that covers conventions for the radii of curvature and focal lengths of both thin lenses and spherical mirrors (concave and convex).

Comparison of conventions for thin lenses with a no-convention equation provided: https://physics.stackexchange.com/a/169649/111287