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Camera Field of View Changes

What Changed​

In version 4.x, images now display edge-to-edge in viewports without the 10% padding that was present in 3.x.

Visual Difference​

  • Before (3.x): Images had automatic padding around edges (configurable color for background)
  • After (4.x): Images fill the entire viewport

How to Revert​

If you need the old behavior with padding, add this configuration during initialization:

import { init } from '@cornerstonejs/core';

init({
  rendering: {
    useLegacyCameraFOV: true,
  },
});

That's it. Your images will display with padding like they did in 3.x.

Why We Changed This​

The new approach provides better screen utilization and more accurate full-width display, especially important for modern high-resolution displays and mobile devices.