If you meter your palm to achieve a proper exposure, what adjustment should you make?

Meterring your palm is a common technique used to establish a reference point for exposure. The average skin tone reflects light similarly to a middle gray card, which is approximately 18% reflective. When you meter your palm, it is likely that you are metering a surface that is slightly darker or lighter than the typical 18% gray value. Therefore, if you meter your palm and get a reading, you should adjust your exposure to ensure that the final image does not end up underexposed or overexposed.

By opening up one stop, you are allowing more light to hit the sensor, compensating for the fact that your palm may not be a perfect representation of what you want to capture in terms of exposure. This adjustment ensures that the resulting photograph is more balanced and correctly exposed, reflecting the scene accurately based on the lighting conditions.

In contexts where the other choices might suggest alternative adjustments, they would not directly address the result of metering a palm for exposure. Closing down one stop could lead to underexposure, while adjusting the sensitivity settings (increasing or decreasing) would alter the camera's response to light but wouldn’t specifically correct for the discrepancies encountered when metering a palm. Thus, opening up one stop is the appropriate action