7. The Rule Of Five Hundred Access

Example: For a 24mm lens on a Nikon crop sensor (1.5x), the effective focal length is 36mm ( ). The rule would be

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. 7. The Rule of Five Hundred

While the basic rule applies to , modern digital sensors often require adjustments based on their specific hardware: Example: For a 24mm lens on a Nikon crop sensor (1