Maximum exposure before stars trail ≈ 500 ÷ (focal length × crop factor) seconds. The NPF rule is more accurate for modern sensors.
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Last updated October 03, 2026 · How we calculate · Sources
Photography glossary
Photography glossary
Maximum exposure before stars trail ≈ 500 ÷ (focal length × crop factor) seconds. The NPF rule is more accurate for modern sensors.
Last updated October 03, 2026 · How we calculate · Sources
Try “Sony a7 IV”, “golden hour Paris”, “50mm f/1.8”, “fireworks”, “Portra 400”.