How fast a shutter do you need for a bird in flight? It depends on the subject's speed across the frame, distance, focal length and your sensor's pixels. Enter the numbers to see the maximum shutter for 1-pixel and 3-pixel blur.
How it works
Image velocity = v × f ÷ d. Max shutter = allowed blur (px × pitch) ÷ image velocity.
FAQ
Typical speeds?
Walking person 5 km/h, running deer 40–60 km/h, small birds in flight 30–50 km/h, raptors diving 100+ km/h.
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