Handheld Shutter Speed Calculator
Calculate the minimum shutter speed to avoid camera shake blur
Photography
Shutter Speed
Stabilization
About Handheld Shutter Speed Calculator
This calculator uses the reciprocal rule: Minimum Shutter ≈ 1 / (focal length × crop factor). Stabilization is factored in as additional stops of handheld capability.
For exposure planning with your calculated shutter speed, use our Exposure Triangle Calculator to balance ISO and aperture.
In low light situations, you may need to push ISO higher. Our Low-Light ISO Calculator helps determine the right settings.
All calculations are performed locally in your browser. No data is sent to any server.
Frequently Asked Questions (FAQ)
What is the reciprocal rule?
The reciprocal rule states that your minimum shutter speed should equal 1/focal length to avoid camera shake blur. For a 50mm lens, use at least 1/50s. For crop sensors, multiply by the crop factor.
How does image stabilization help?
Image stabilization (IS/VR/OIS/IBIS) compensates for camera movement, allowing slower shutter speeds. Each "stop" of stabilization doubles the time you can handhold. Modern systems offer 5-8 stops.
Does stabilization work for moving subjects?
No, stabilization only helps with camera shake, not subject motion. For moving subjects (sports, wildlife, kids), you still need fast shutter speeds regardless of stabilization.
Why does crop factor affect minimum shutter speed?
Crop sensors magnify the apparent camera shake along with the image. A 50mm lens on APS-C (1.5× crop) frames like 75mm and shows shake like 75mm. Use our Lens Crop Factor Calculator for details.
What if I need slower shutter speeds than recommended?
Use a tripod, monopod, or brace against a stable surface. You can also increase ISO to maintain faster shutter speeds. Check our Low-Light ISO Calculator for guidance.