Certified Professional Photographer (CPP) Practice Exam

What is the result of using a 3x teleconverter on a 200mm lens?

1. 500mm lens

2. 400mm lens

3. 600mm lens

4. 300mm lens

The correct answer is: 600mm lens

Using a 3x teleconverter on a 200mm lens multiplies the focal length of the lens by the factor of the teleconverter. In this case, a 3x teleconverter applied to a 200mm lens results in a focal length of 200mm multiplied by 3, which equals 600mm. Teleconverters are optical devices that extend the focal length of a lens, providing greater magnification. This enhancement is particularly valuable in wildlife or sports photography where reaching distant subjects is necessary. The numerical value of the teleconverter determines the amount by which the lens's focal length is increased, and in this scenario, a 3x multiplier is substantial enough to elevate the effective focal length significantly. The understanding of how teleconverters work is crucial for photographers seeking to manipulate their lens capabilities for diverse photography scenarios.