Calculate optimal timing for blink-free group photos.
Group Stats
Probability Score
Success Probability96.9%
Chance of 1+ blink-free shot
Single Shot Success68.8%
Recommended Shots4For 99% certainty
This calculator uses an average blink duration of 250ms and a 4-second interval between blinks.
Overview
Blink-free photos require timing and technique. People blink about 15-20 times per minute, typically every 3-6 seconds. Understanding blink patterns helps photographers capture open eyes in group shots.
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Pro Tips
Ask subjects to close eyes, then open on count of three.
Take multiple shots in rapid succession.
Avoid bright lights that trigger blinking reflexes.
Use continuous shooting mode for multiple frames.
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Fun Facts
"Average blink rate is 15-20 blinks per minute."
"Each blink lasts 100-400 milliseconds."
"People blink less when focusing intently on something."
"Group photos have 50%+ chance of someone blinking in any shot."
