Exploring Extended Depth of Field (EDF) in the Radiant AFVN 4K Auto-Focus Microscope

Extended Depth of Field (EDF) is a powerful imaging technique that keeps objects at multiple distances from the lens in sharp focus at the same time. Widely used in microscopy and photography, EDF allows users to capture clear images of subjects with varying depths—without the need for mechanical refocusing or image stacking. The result is a consistently sharp image across the entire visual field.

Why EDF Matters in PCB Inspection

Printed Circuit Boards (PCBs) are packed with components of different heights — microchips, capacitors, solder joints, and more. Traditional microscopes often struggle to keep all of these elements in focus at once, forcing inspectors to constantly adjust focus manually or risk missing critical defects.

Extended Depth of Field solves this problem by delivering sharp, uniform focus across the entire PCB surface. This means:

  • No more time-consuming refocusing
  • Fewer missed defects due to blurred regions
  • Higher inspection accuracy and consistency
  • Less eye strain and fatigue for operators

In environments where precision and speed are critical like electronics manufacturing and quality control — EDF isn’t just a nice feature; it’s a game-changer.

Radiant AFVN Auto Focus 4K Digital Microscope

The Radiant AFVN Auto-Focus 4K Digital Microscope is designed to take full advantage of EDF technology. Whether you're inspecting flat traces or tall components on a PCB, this microscope captures clear, detailed images across all depths in a single frame—no manual refocusing or image stacking required.

Key features include:

  • Extended Depth of Field (EDF) for sharp, consistent focus across varying heights
  • Real-time autofocus for hands-free, seamless operation
  • 4K ultra-high-resolution imaging for crystal-clear detail

Have questions or want a demo? Contact us at sales@tokimeku.com — we're here to help!