Long Exposure
A photography technique using slow shutter speeds to capture motion blur, light trails, or smoothed water and clouds over an extended time period.
Long exposure photography keeps the camera sensor exposed for seconds, minutes, or even hours. Moving elements blur while stationary elements remain sharp, creating surreal effects: silky waterfalls, streaking car lights, star trails, and ghostly crowds. Typical settings range from 1 to 30 seconds, though bulb mode allows unlimited duration. A tripod is essential to prevent camera shake. Neutral density (ND) filters allow long exposures in daylight by reducing light reaching the sensor. Common challenges include noise buildup from sensor heat, blown highlights from overexposure, and unwanted movement from wind. In post-processing, AI denoising can clean up long exposure noise, while AI enhance can sharpen stationary elements that suffered slight motion blur.
Related Terms
Shutter Speed
The duration for which the camera sensor is exposed to light, measured in fractions of a second or full seconds.
ISO
A camera setting that controls the sensor's sensitivity to light, with higher values producing brighter images but more noise.
Noise Reduction
Processing that reduces the random grain-like artifacts introduced by high ISO settings, low light, or long exposures.
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