Concept / HDR tone mapping

HDR tone mapping

Postprocessing that maps HDR brightness into a displayable range

Postprocessing that maps HDR brightness into a displayable range.

A phrase to start with

Preserves detail across bright and dark tonal ranges.

Appearance and effects

Preserves detail across bright and dark tonal ranges.

Visual traits

  • bright and dark tonal detail

Expected changes

  • bright and dark tonal detail is more likely to appear

Five examples

1 — Medium-sized dog
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2 — Cat
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3 — Teenage boy
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4 — Unoccupied interior
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5 — Valley with a river and mountain ranges
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Meaning and scope

Definition

Maps brightness into a display range. Capture medium, exposure, local retouching, and compositing are separate choices.

In more detail

It defines a postprocessing scope; other capture, retouching, and compositing conditions remain separate choices.

Includes

  • bright and dark tonal detail

Excludes

  • Capture medium
  • local retouching
  • image compositing

What this does not imply

  • A particular capture device
  • subject
  • era
  • or narrative

Variability

The general source does not directly substantiate results from a particular device or process.

Usage and adjustments

Usage

  • Specify only the postprocessing effect

Distinguish similar expressions

  • Distinguish it from capture conditions and other postprocessing

Typical uses

  • Adjust the appearance of a finished image

Possible failure modes

  • The effect is too weak to read
  • The effect is so strong that the image is unreadable

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