ND Slow Shutter vs ND Exposure Calculator

Master Long Exposure Photography with Ease ND Slow Shutter helps you calculate the perfect shutter speed when using Neutral Density (ND) filters—so you can focus on creativity, not math. Key Features • Instant Calculations — Enter your base exposure and ND filter strength (ND1–ND20) to get precise results in seconds • Built-in Timer — Stay in control during long exposures with an optional countdown timer • Simple & Intuitive — Clean, fast interface designed for photographers of all levels • Apple Watch Support — Control your exposures and timer directly from your wrist (Premium) Why ND Slow Shutter? • Accurate Results — Reliable calculations you can trust in the field • Faster Workflow — No guesswork, no manual conversions • Shoot with Confidence — Focus on composition while the app handles the math Whether you’re capturing silky waterfalls, smooth seascapes, or motion blur, ND Slow Shutter gives you the precision and control you need. Download now and elevate your long exposure photography.

Prepare a long exposure without calculating each filter separately. Combine your ND filters, include supported film correction and take the result into a timer. STACK FILTERS, CALCULATE TOGETHER Choose your filters and calculate their combined effect on the exposure time. INCLUDE THE FILM CORRECTION Supported ILFORD profiles provide reciprocity correction using retained manufacturer data. Other films are not automatically interchangeable. START WITH THE PLANNED TIME Move the calculated exposure into the timer. Save a setup to reuse on your next shoot. Calculations help you plan the exposure. Background timer delivery depends on the system and any required notification permission.