Long Exposure Photography: The Complete Guide (2026)
Long exposure photography is the art of keeping your shutter open for seconds — sometimes minutes — to turn moving light and water into something the human eye can never see on its own. Silky waterfalls, streaking car headlights, creamy surf, glowing star trails — all of it comes from one simple idea: slow your shutter down and let time do the work. If you have ever wondered how photographers capture those magical images, this guide is for you. By the end, you will have exact long exposure settings, a practical gear list, and the confidence to shoot your first long exposure tonight.
What Is Long Exposure Photography?
Long exposure photography is any technique that uses a slow shutter speed — typically 1/4 of a second or longer — to intentionally record the passage of time in a single frame. While a fast shutter speed freezes a single instant, a long exposure accumulates all the motion, light, and movement that happens across the full duration of the shot.
The term long exposure shutter speed is relative. “Long” for a waterfall might be 1 second. “Long” for a Milky Way shot is 20–25 seconds. “Long” for star trails might be 30–60 minutes. What they all share is the need for a tripod, careful composition, and deliberate technique.
Long exposure is a cornerstone of the shutter speed photography skill set. Once you understand how shutter speed works, long exposure becomes a natural extension of that knowledge into pure creative territory.
Essential Gear for Long Exposure Photography
You do not need expensive equipment to start, but you do need a few key items:
The Non-Negotiables
- Tripod: Any sturdy tripod will do. Carbon fibre is lighter for hiking; aluminium is fine for most locations. Stability is everything.
- Remote shutter release: Pressing the camera button during an exposure causes vibration. A £15–30 wired remote solves this. Wireless remotes and camera apps (Canon Camera Connect, Sony Imaging Edge) also work.
- Your camera and any interchangeable lens: Any camera with manual or shutter priority mode will work — you do not need a full-frame camera.
Highly Recommended
- Neutral Density (ND) filter: An ND filter acts like sunglasses for your lens — it blocks light without affecting colour. In bright daylight, you cannot achieve a 2-second waterfall exposure without one. A 6-stop ND is a versatile starter; a 10-stop ND gives you extreme flexibility.
- Graduated ND filter: For landscapes where the sky is much brighter than the foreground, a graduated ND darkens only the top half of the frame.
- Lens cleaning cloth: Spray from waterfalls and sea mist gets on your lens. Keep it clean.
Long Exposure Settings: The Foundation
Here are the settings to start with. Adjust from there based on your specific conditions.
General Long Exposure Starting Settings
- Mode: Manual (M) or Bulb (B) for exposures over 30 seconds
- ISO: 100 (lowest native ISO keeps noise minimal)
- Aperture: f/8 to f/11 (sharp across the frame; avoids diffraction)
- Shutter speed: Determined by subject — see table below
- White balance: Set manually (Daylight, Cloudy, or Tungsten depending on light) — auto WB can shift between shots
- Focus: Manual focus after auto-focusing on your subject — AF can hunt in the dark or during long exposures
- Noise reduction: Long exposure NR can be enabled in-camera but doubles your waiting time; shoot RAW and reduce in post for more control
Long Exposure Settings by Subject
| Subject | Shutter Speed Range | Effect | ND Filter Needed? |
|---|---|---|---|
| Waterfall (gentle silk) | 1/4s – 1s | Soft flowing water | Often in daylight |
| Waterfall (full silk) | 1s – 4s | Creamy ribbon effect | Yes in daylight (6-stop) |
| River / stream | 1/2s – 2s | Smooth, glassy flow | Yes in daylight |
| Ocean/seascape | 4s – 30s | Misty, dreamy sea | Yes (6–10 stop) |
| City light trails | 5s – 30s | Streaking headlights | No (night) |
| Fireworks | 2s – 8s | Multiple burst trails | No (dark sky) |
| Milky Way | 15s – 25s | Stars sharp, no trails | No |
| Star trails (stacked) | 15–30s per frame | Circular arcs (stacked in post) | No |
| Star trails (single) | Bulb: 20–60 min | Long circular arcs | No |
| Indoor light painting | 10s – 30s | Light drawing in dark room | No |
How to Do Long Exposure Photography: Step-by-Step
Step 1: Set Up Your Tripod
Extend legs to working height, spread them for maximum stability, and tighten all locks. On soft ground, push the legs in slightly. Hang your camera bag from the centre column hook to add weight and dampen vibrations in wind.
Step 2: Compose and Focus
Use live view on a tilted LCD to compose without craning your neck. Auto-focus on your subject, then switch the lens to manual focus. This locks focus so AF does not hunt during the exposure.
Step 3: Set Your Exposure
Start with ISO 100, f/8, and estimate your shutter speed based on the table above. Take a test shot (without ND filter if needed to check exposure), then add the ND filter and calculate the adjusted exposure time using your camera’s histogram or an ND filter calculator app.
Step 4: Use a Remote Release
Connect your wired or wireless remote. If you do not have one, use your camera’s 2-second self-timer — this lets any vibration from pressing the button settle before the shutter opens.
Step 5: Review and Adjust
Check the histogram after each shot. You want the graph pushed as far right as possible without clipping the highlights (the right edge). A slightly right-biased histogram has less noise in the shadows — a technique called “expose to the right” (ETTR).
Step 6: Shoot RAW
Long exposures benefit enormously from RAW processing. You can pull back blown highlights, reduce noise precisely, and adjust white balance. JPEG processing in-camera is irreversible.
Long Exposure at Night vs Daytime
Night Long Exposure
Night is the easiest time to do long exposures — there is no excess daylight to fight, and you can use any shutter speed you need without an ND filter. The main challenges are achieving correct exposure (check histogram carefully), managing noise at higher ISOs, and avoiding camera shake in cold conditions (batteries drain faster in the cold — carry a spare).
Daytime Long Exposure
Achieving a 2-second waterfall exposure in bright midday sun requires dramatically reducing the light reaching your sensor. Options: use a small aperture (f/16 – f/22), shoot in shade or overcast conditions, or — the best option — attach a solid ND filter. A 10-stop ND turns a correct exposure of 1/250s into approximately 4 seconds. Free ND exposure calculator apps (LongExposure Calculator, PhotoPills) take the maths out of this entirely.
Mistakes to Avoid in Long Exposure Photography
- Tripod on unstable ground: Wooden boardwalks and bridges vibrate. Even a distant car can shake a long exposure. If possible, wait for stillness or shoot off the boardwalk.
- Forgetting to switch to manual focus: If AF is active, the camera may refocus during or between shots, ruining a series.
- Leaving IS/VR active on a tripod: Most image stabilisation systems hunt when the camera is not moving. Turn it off on a tripod.
- Over-editing noise reduction: Heavy NR in post smears fine details. Shoot at ISO 100 and use layered, light-touch NR.
- Ignoring wind: Wind shakes foliage and can move the camera even on a tripod. Wait for lulls or weigh down the tripod further.
Quick-Reference: Long Exposure Cheat Sheet
| Setting | Recommended Value |
|---|---|
| ISO | 100 (native base) |
| Aperture | f/8 – f/11 |
| Focus | Manual (after AF lock) |
| Image stabilisation | OFF on tripod |
| White balance | Manual (not Auto) |
| File format | RAW |
| Shutter release | Remote or 2s self-timer |
| Review method | Histogram (not LCD brightness) |
Frequently Asked Questions
What is a good shutter speed for long exposure?
It depends entirely on the subject. For waterfalls, 1/4s to 2s. For light trails, 5–30 seconds. For the Milky Way, 15–25 seconds. For star trails, 20–60 minutes. Start with the range for your subject and adjust based on the histogram.
Do I need an ND filter for long exposure?
Only in bright conditions. At night, there is little enough ambient light that you can achieve any shutter speed without filtering. In daylight, an ND filter is essential to slow your exposure down to seconds or more.
Can I do long exposure without a tripod?
Not practically. Any exposure longer than about 1/60s will show camera shake. You can rest your camera on a wall, railing, or bean bag for short exposures, but a proper tripod is the tool for serious long exposure work.
Why is my long exposure photo blurry?
Three common causes: camera shake (use a remote release and check your tripod stability), subject movement you did not intend (only a problem if the motion is in the background rather than what you want to blur), or incorrect focus (always lock manual focus after AF).
What ISO should I use for long exposure?
ISO 100 is the starting point. It gives the cleanest, least noisy result. Only raise ISO if your shot is still too dark after maximising shutter time and opening aperture as far as your depth of field allows.
Ready to master the exposure controls that make long exposure possible? Revisit the fundamentals in our complete shutter speed guide, then explore how aperture and ISO complete the triangle. For night-specific long exposures, our night photography guide covers everything from city lights to the Milky Way.