Certified Professional Photographer (CPP) Practice Exam

Increasing the distance between the lens and the sensor while using bellows or extension tubes allows the photographer to focus on small objects at closer distances. This increases the _________________________ of the object.

1. Exposure

2. Magnification

3. Resolution

4. Contrast

The correct answer is: Magnification

Increasing the distance between the lens and the sensor using bellows or extension tubes allows for greater magnification of the object being photographed. When a photographer makes use of such devices, it effectively shortens the lens' focusing distance, meaning the camera can focus on subjects much closer than it would normally be able to. This results in a larger image being projected onto the sensor, allowing for small objects to appear larger in the final image. Magnification is defined as the ability of a lens or optical system to enlarge the appearance of an object. When using extension tubes, the effective focal length is extended, enabling the camera to capture fine details that are often missed at standard focusing distances. This is particularly beneficial in macro photography, where capturing small objects with high detail and clarity is crucial. The other options do not accurately describe the effect of using bellows or extension tubes in this context. While exposure, resolution, and contrast play important roles in photography, they do not directly define the relationship of lens-to-sensor distance to the enlargement of an image on the sensor as magnification does.