Certified Professional Photographer (CPP) Practice Exam

The 80B tungsten color correction filter is designed to adjust the color temperature of a light source, specifically from a warmer (more orange) tungsten light, which typically has a color temperature around 3,200 K, to a cooler daylight temperature of approximately 5,500 K.

The correct answer of 3,400 K can be understood within the context of color temperature adjustments. The 80B filter effectively shifts the color temperature upwards, making the light appear more like natural daylight. Although 3,200 K is a standard rating for tungsten lighting, the 80B filter does not specifically start from this color temperature. Instead, it slightly modifies the warmth of sources that could range just above the standard tungsten level.

By using the 80B filter, the goal is to achieve better color balance when photographing under tungsten light by making it compatible with daylight film or sensors, which typically are calibrated around 5,500 K. The selected value of 3,400 K aligns with practical applications for photographers seeking to bridge the gap between tungsten and daylight conditions, ensuring enhanced color fidelity in their images.