Photography Techniques and Settings

Exposure is the total amount of light that reaches the sensor, which is determined by the aperture area, the length of time the shutter is open, and the sensitivity (ISO) of the sensor.

Answer is D.

The amount of light captured while taking a photo is known as the exposure, and it's affected by three things - the shutter speed, the aperture diameter, and the ISO or film speed. 
Aperture is measured using the "f-number", sometimes called the "f-stop", which describes the diameter of the aperture. A lower f-number relates to a wider aperture (one that lets in more light), while a higher f-number means a narrower aperture (less light).
Because of the way f-numbers are calculated, a stop doesn't relate to a doubling or halving of the value, but to a multiplying or dividing by 1.41 (the square root of 2). For example, going from f/2.8 to f/4 is a decrease of 1 stop because 4 = 2.8 * 1.41. Changing from f/16 to f/11 is an increase of 1 stop because 11 = 16 / 1.41.
Hence, when the aperture of the camera reduces to half of the original aperture, the exposure time should be half than before.

Camera shake is caused by movement during a long exposure. Using a tripod stabilizes the camera, and a faster shutter speed reduces the duration of the exposure, minimizing the impact of any residual movement.

JPEG is a compressed file format. The primary benefit is that it uses lossy compression to create smaller file sizes compared to uncompressed or lossless RAW files.

Shutter speed is the length of time the camera's shutter remains open to allow light to reach the image sensor.

Aperture and depth of field have an inverse relationship. As the aperture becomes wider (smaller f-number), the depth of field becomes shallower, meaning only a small portion of the image will be in focus. Conversely, as the aperture becomes narrower (larger f-number), the depth of field becomes deeper, resulting in a larger portion of the image being in focus.

Aperture can affect the brightness of an image depending on the setting. A wider aperture (smaller f-number) allows more light to enter the lens, resulting in a brighter image. Conversely, a narrower aperture (larger f-number) allows less light to enter the lens, resulting in a darker image.

Aperture and shutter speed have an inverse relationship. When using a wider aperture (smaller f-number), a faster shutter speed is required to avoid overexposing the image. Conversely, when using a narrower aperture (larger f-number), a slower shutter speed can be used without overexposing the image.

Aperture is the primary factor that affects the depth of field. A wider aperture (smaller f-number) results in a shallower depth of field, while a narrower aperture (larger f-number) results in a deeper depth of field.

Aperture is one of the factors that affects the brightness of an image. A wider aperture (smaller f-number) allows more light to enter the lens, resulting in a brighter image. Conversely, a narrower aperture (larger f-number) allows less light to enter the lens, resulting in a darker image.

Shutter speed is the primary factor that affects the motion blur in an image. A faster shutter speed freezes motion, while a slower shutter speed allows motion blur to occur.

Focal length is the primary factor that affects the field of view in an image. A shorter focal length results in a wider field of view, while a longer focal length results in a narrower field of view.

Focal length is the primary factor that affects the magnification in an image. A longer focal length results in greater magnification, while a shorter focal length results in less magnification.

DSLRs have a mirror that reflects light from the lens to the viewfinder, while mirrorless cameras use an electronic viewfinder to display the image.

Larger sensors have better light-gathering capabilities, resulting in improved image quality in low-light conditions.