Aerial Photography Concepts

Front

What is the Nadir Point?

Back

The point directly below the camera lens, at the center of the aerial photograph.

Front

Define Oblique Photography.

Back

Aerial photographs taken at an angle, not straight down.

Front

Define Vertical Photography.

Back

Aerial photographs taken with the camera pointing straight down.

Front

What is Photogrammetry?

Back

The science of obtaining reliable measurements from photographic images.

Front

What is relief displacement?

Back

The effect that causes tall objects to lean radially outward from the nadir point in aerial photographs.

Front

How is the scale of an aerial photograph expressed?

Back

As a ratio, such as 1:10,000, indicating the relationship between distances on the photo and on the ground.

Front

What is the function of the aperture in aerial photography?

Back

Controls the amount of light entering the camera lens.

Front

What does shutter speed control?

Back

The duration of time the camera's shutter is open, affecting motion blur.

Front

What is focal length and how it effects aerial photos?

Back

The distance from the lens to the image sensor, affecting the angle of view and scale.

Front

Why is overlap important in aerial photography?

Back

Essential for stereoscopic viewing and creating 3D models.