ND Filter Expert Pro

ND Filter Expert Pro is a precision ND filter calculator and long‑exposure toolkit for photographers. Instantly convert base exposure to the correct long shutter time when using single or stacked neutral density filters. Built for landscape, seascape, cityscape, and time‑lapse creators who need accurate, repeatable results on location. Core features: • Fast ND filter calculator: enter base exposure and select one or more ND filters to get the exact long exposure time, up to extreme stop values. • Built‑in long exposure timer: large countdown with sound or vibration alerts and a Bulb mode helper for precise start and release. • Presets and shoot log: save favorite filter stacks, record settings and notes, and repeat proven setups with confidence. Perfect for users searching for an ND filter calculator, long exposure photography, exposure calculator app, shutter speed helper, and neutral density filter utility.