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Motion Blur & Exposure

On a moving line the exposure that matters is the one that keeps the part inside a pixel. This is the calculation that decides whether you need a strobe or a shutter — and it is usually the reason a vision system that worked on the bench fails on the conveyor.

Part speed (mm/s)

Exposure time (ms)

mm per pixel

Allowable blur (px)

Blur distance

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Blur in pixels

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Within budget?

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Max exposure (1 px)

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Max exposure (your budget)

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Max speed at this exposure

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Shorter exposure needs more light — that is the trade, and it is why line-scan and strobed setups exist. A strobe also freezes motion without asking the sensor for an impossible shutter.

A helper, not a substitute for engineering judgment. Verify against the governing standard.