1Waterfall with ND64 (6 stops)
Inputs
Base Shutter1/60
ND FilterND64 (6 stops)
Result
New Shutter1.1s
1/60 × 2^6 = 1/60 × 64 = 64/60 = 1.07 seconds.
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ND Filter Calculator — Shutter Speed with Any Neutral Density Filter
New Shutter
1.1s
Base
1/60
Stops
6
New Shutter Speed
1.1s
with ND64 (6 stops)
Base
1/60
Factor
64x
Density
1.81 OD
All Filters @ 1/60
ND2 (1 stop)1/30s
ND4 (2 stops)1/15s
ND8 (3 stops)1/8s
ND16 (4 stops)1/4s
ND32 (5 stops)1/2s
ND64 (6 stops)1.1s
ND256 (8 stops)4.3s
ND1000 (10 stops)17.1s
ND4096 (12 stops)1m 8s
ND32768 (15 stops)9m 6s
What You'll Need
K&F CONCEPT 67mm Variable ND2-400 Lens Filter (1-9 Stops) for Camera Lens
$34.18
View on Amazon
NEEWER ND Filter Set Compatible with DJI Mini 3 / Mini 3 Pro, CPL ND8 ND16 ND32 ND64 ND128 Neutral Density Filter Drone Video Photography Accessories, 6 Pack
$40.99
View on Amazon
K&F Concept 77mm ND1000 (10-Stop Fixed Neutral Density) ND Filter with 28 Multi-Coated Optical AGC Glass Waterproof Camera Lens Filter- for Long Exposure Photography (Nano-X Series)
$44.99
View on AmazonK&F CONCEPT 67mm Variable ND2-400 Lens Filter (1-9 Stops) for Camera Lens
$34.18
View on AmazonNEEWER ND Filter Set Compatible with DJI Mini 3 / Mini 3 Pro, CPL ND8 ND16 ND32 ND64 ND128 Neutral Density Filter Drone Video Photography Accessories, 6 Pack
$40.99
View on AmazonK&F Concept 77mm ND1000 (10-Stop Fixed Neutral Density) ND Filter with 28 Multi-Coated Optical AGC Glass Waterproof Camera Lens Filter- for Long Exposure Photography (Nano-X Series)
$44.99
View on AmazonAs an Amazon Associate, we earn from qualifying purchases.
Price as of Jul 24, 2026. Product prices and availability are accurate as of the date indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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Example Calculations
2Cloud Streaks with ND1000 (10 stops)
Inputs
Base Shutter1/250
ND FilterND1000 (10 stops)
Result
New Shutter4.1s
1/250 × 2^10 = 1/250 × 1024 = 1024/250 = 4.1 seconds.
Frequently Asked Questions
QHow do I calculate shutter speed with an ND filter?
New shutter = base shutter × 2^stops. A 6-stop ND64 with base 1/60s: 1/60 × 64 = 1.07 seconds. A 10-stop ND1000 with base 1/125s: 1/125 × 1024 = 8.2 seconds.
- Formula: new = base × 2^stops
- ND4 (2 stops): ×4 time
- ND64 (6 stops): ×64 time
- ND1000 (10 stops): ×1024 time
- Stack filters: add the stops together
| Filter | Stops | Factor | Base 1/125s Becomes |
|---|---|---|---|
| ND4 | 2 | 4× | 1/30s |
| ND64 | 6 | 64× | 1/2s |
| ND1000 | 10 | 1024× | 8.2s |
| ND32768 | 15 | 32768× | 4m 22s |
QWhich ND filter should I buy first?
A 6-stop (ND64) is the most versatile. It turns 1/250s into 1/4s for silky water in daylight. A 10-stop (ND1000) is for extreme long exposures (30s+ in daylight). Variable NDs are convenient but can cause cross-pattern artifacts.
- ND64 (6-stop): Most versatile, great for water
- ND1000 (10-stop): Cloud streaks, ghost crowds
- ND4 (2-stop): Video in bright light
- Variable ND: Convenient but may have color cast
- Square filter system: No vignetting on ultra-wide
QCan I stack ND filters?
Yes, add the stops. ND8 (3 stops) + ND64 (6 stops) = 9 stops total. However, stacking increases the risk of vignetting on wide-angle lenses and can reduce sharpness. Quality filters minimize these issues.
- Add the stop values when stacking
- ND8 + ND64 = 9 stops
- Risk of vignetting on <24mm
- Each filter surface = potential flare
- Better to buy one strong filter than stack weak ones
QWhat ND filter for video in daylight?
For the 180-degree shutter rule (shutter = 1/2×fps), you need ND4-ND8 on a bright day. At 24fps/1/50s in sun: base exposure is ~1/2000s, so you need 5-6 stops (ND32 or ND64) to get to 1/50s.
- 180° rule: shutter = 1/(2×fps)
- 24fps: shutter = 1/50s
- 30fps: shutter = 1/60s
- Bright sun (EV 15): need ND64 for video
- Variable ND is popular for video run-and-gun
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Last Updated: Jul 24, 2026
This calculator is provided for informational and educational purposes only. Results are estimates and should not be considered professional financial, medical, legal, or other advice. Always consult a qualified professional before making important decisions. UseCalcPro is not responsible for any actions taken based on calculator results.