Patch_Dynamic_Range charts

36 Patch Dynamic Range (LDR)

  • At least 50 dB of Dynamic Range
  • Gray background for proper auto-exposure
  • Slanted edge and color patch features

ITHDR36_preview

GrayWorld WDR & UHDR

  • At least 100 dB or 150dB of Dynamic Range
  • Constructed from two and three layers of photographic film
  • Gray background for proper auto-exposure
  • Characterize real-world system performance

Contrast Resolution

  • Measure distinguishability of low contrast objects within larger fields with Imatest 5.0
  • 100 dB of Dynamic Range
  • Grey background for proper auto-exposure
  • Slanted edge features

DarkWorld Mask

  • Goes over 36-patch test charts
  • Idealized dark scene with minimum flare
  • May be difficult for autoexposure

XYLA

  • Dark background with linear steps
  • 84 dB, 120 dB or 150 of Dynamic Range
  • Includes self-contained light source
  • Difficult to detect, affected by light falloff

ISO 21550

  • Optical density 4 to 6
  • Supports the ISO standard
  • Good for macro systems
  • Low cost