7. The Rule Of Five Hundred Access

It identifies the threshold where the movement of stars across the sky begins to blur into streaks rather than appearing as distinct dots in a long-exposure image. 2. Application and Adjustments

Shutter Speed (seconds)=500Focal Length of the LensShutter Speed (seconds) equals the fraction with numerator 500 and denominator Focal Length of the Lens end-fraction 7. The Rule of Five Hundred

For cameras with APS-C sensors (like most entry-level DSLRs), you must first multiply the lens focal length by the camera's "crop factor" (usually 1.5x or 1.6x) before dividing. It identifies the threshold where the movement of

While the basic rule applies to , modern digital sensors often require adjustments based on their specific hardware: 7. The Rule of Five Hundred