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Photo Setup Calculator — Model Photography Guide

Calculate backdrop size, camera distance and lighting angles for model photography.

How We Calculate This

Calculates optimal camera distance, backdrop dimensions and lighting placement based on your model size and camera setup.

Formula

  • Effective focal length = Lens mm x Crop factor
  • Camera distance = (Effective focal x Model length) / (Sensor width x 0.7)
  • Backdrop width = Model length x 2.5
  • Light distance = Model length x 1.5 (at 45 degrees)

Frequently Asked Questions

Last updated: February 2026

All calculations are estimates. Always verify quantities before purchasing materials.