For outside shots I go along with the “sunny 16” rule down rated for England to “sunny 11” as Ole. Roughly equal to 1/125th at f11 in bright sunshine with 100 EI film. Adjust for location of sun, in front of or behind cloud, do some mental gymnastics regarding adjustments for filters, and then check the result with my Weston Euromaster lightmeter. If the two reading don’t coincide; then I disregard the Weston’s. For inside work I set the flash to “auto-bounce” and let it get on with it.