Long exposure photography is a technique that involves using a slow shutter speed to capture the movement of subjects over time, resulting in ethereal and dreamlike images.

Long exposure times are used to capture the movement of dynamic elements, such as water, clouds, or traffic, creating a sense of motion and fluidity in the image.

Portraits are typically not a common subject for long exposure photography, as the slow shutter speed can result in motion blur and a lack of sharpness in the subject's face.

ND filters are used to reduce the amount of light entering the lens, allowing the photographer to use longer exposure times without overexposing the image.

Using a neutral density filter reduces the amount of light entering the lens, allowing the photographer to use a longer exposure time to smooth out the water's movement.

HDR (High Dynamic Range) photography involves capturing multiple long exposure images of the same scene at different exposure values and then blending them together to create a single image with a wider dynamic range.

Leading lines are a composition technique that draws the viewer's eye through an image, creating a sense of depth and perspective. They can be found in natural elements, such as rivers or roads, or in man-made structures, such as bridges or buildings.

Time-lapse photography involves capturing a series of long exposure images over a period of time, typically at regular intervals, and then compiling them into a video or animation. This technique allows photographers to capture the passage of time in a compressed format.

Star trails are a common subject for long exposure photography, as the slow shutter speed allows the photographer to capture the movement of stars as they rotate around the Earth's axis.

Panning is a technique used in long exposure photography to capture a sharp subject and a blurred background. It involves moving the camera along with the moving subject, keeping the subject in focus while blurring the background.

Negative space is a composition technique that involves using empty or unused space in an image to create a sense of mystery and intrigue. In long exposure photography, negative space can be used to emphasize the movement of a subject or to create a sense of depth and perspective.

Zooming is a technique used in long exposure photography to capture a blurred subject and a sharp background. It involves zooming the lens during the exposure, creating a sense of motion and dynamism in the image.

Cloud formations are a common subject for long exposure photography, as the slow shutter speed allows the photographer to capture the movement of clouds as they drift across the sky.

Tracking is a technique used in long exposure photography to capture a sharp subject and a blurred background, while also panning the camera to follow the subject's movement. This technique is often used to capture moving subjects, such as cars or animals.

Symmetry is a composition technique that involves arranging elements in an image in a balanced and harmonious way. In long exposure photography, symmetry can be used to create a sense of order and stability in the image.