Questions about beach and portrait photography

If you want a person's skin to be exposed correctly, then go to this person, press the shutter on his face with the camera, remember the shutter speed and value, return to the shooting position where the composition is completed, focus on the face, adjust to the exposure value just measured, and press the shutter.

Portrait photography on the beach depends on the lighting conditions at that time. If it is diffuse light, people and scenes can be exposed correctly. If the sun shines directly on the human body, the semi-exposure value can also be reduced by face-based photometry.

If you want to correctly expose people's skin color in backlit photos, you need to add two steps of exposure. But at this time the background will be bright and the details will be lost. Therefore, if you want to get a clear picture of people and background, you don't need to increase exposure, just use a flash to fill the light.