Straightening an image is primarily done to correct tilted horizons, ensuring that vertical lines appear straight and horizontal lines are level.

The Straighten tool, also known as the Rotation tool, is specifically designed for straightening images by adjusting the angle of the entire image.

Straightening corrects tilted horizons, ensuring vertical lines appear straight and horizontal lines are level, while perspective correction adjusts the angle of objects to make them appear more natural or to achieve a specific effect.

Perspective correction is commonly used in architectural photography to correct converging lines, making buildings and structures appear more upright and reducing the distorted appearance caused by the camera's angle.

Radial perspective correction is not a common type of perspective correction. Vertical, horizontal, and curvilinear perspective corrections are more commonly used to adjust the angle of lines and objects in an image.

A grid overlay is used when straightening or applying perspective correction to help align elements in the image, ensuring that vertical and horizontal lines appear straight and parallel.

Perspective distortion refers to the distortion caused by the angle of the camera relative to the subject, resulting in converging lines and objects appearing larger or smaller depending on their distance from the camera.

Cropping the image is not a method for straightening an image. Straightening involves adjusting the angle of the entire image, while cropping removes unwanted areas from the image.

In architectural photography, perspective correction is primarily used to correct converging lines, making buildings and structures appear more upright and reducing the distorted appearance caused by the camera's angle.

Enhancing the colors of the product is not a common use case for perspective correction in product photography. Perspective correction is primarily used to adjust the angle of the product and remove unwanted objects from the background.

The Crop tool is used to remove unwanted areas from an image, while the Straighten tool is used to adjust the angle of the entire image.

Curved grids are not commonly used for straightening and perspective correction. Rule of thirds grid, Golden ratio grid, and Square grid are more commonly used to help align elements in the image and adjust the composition.

Lens distortion refers to the distortion caused by the lens of the camera, resulting in straight lines appearing curved or objects appearing stretched or compressed.

Cropping the image is not a method for applying perspective correction. Perspective correction involves adjusting the angle of lines and objects in the image, while cropping removes unwanted areas from the image.