Certified Professional Photographer (CPP) Practice Exam

What is a limitation of infrared triggers?

1. High cost

2. Long distance

3. Limited effectiveness in bright sunlight

4. Low sensitivity

The correct answer is: Limited effectiveness in bright sunlight

The limitation of infrared triggers primarily lies in their reduced effectiveness in bright sunlight. Infrared triggers, which rely on detecting changes in heat or infrared light, can be easily overwhelmed by the intensity of sunlight. In outdoor settings or under bright lighting, the ambient infrared radiation can create interference, making it challenging for the trigger to detect the intended signals accurately. This limitation is significant, as it reduces the reliability of infrared triggers in high-light conditions. While other factors like high cost or sensitivity might impact the overall usability of certain models, the direct interference from bright sunlight specifically hinders their fundamental operation. Consequently, photographers using infrared triggers for remote firing or wireless control in bright conditions may find them less effective than in controlled or shaded environments.