1) You are trying to take portraiture outdoor on a sunny day. The sunlight cast a shadow on the opposite side of the subjectís face. The metering reading for key light is f/11 at 1/250 sec. How to achieve the 1:4 lighting ratio?
2) trying to take environmental portraiture at night, a popular shopping mall with beautiful decorative lights as background. The ambient reading is f5.6 at 1/30sec. Subjects stand at a distance from the background in order to include the shopping mall. I have to flash the subjects with a flashlight, as the available light is too dim for exposure. How do I balance with my flashlight in term of its light intensity and colour balance?