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Concept / High-ISO noise

High-ISO noise

Random luminance and color variation that becomes more visible in high-sensitivity capture

Random luminance and color variation that becomes more visible in high-sensitivity capture.

Photography & Cinematic Looks
High-ISO noise · Teenage boy

Teenage boy

Both languages share the English example images. Japanese prompts are the recorded translations.

A phrase to start with

Directs the image toward random luminance and color variation that becomes more visible in high-sensitivity capture.

Appearance and effects

Irregular luminance and color speckles appear, especially in darker areas.

Visual traits

  • color response
  • tonal range
  • grain or noise

Expected changes

  • Irregular luminance and color speckles appear, especially in darker areas.

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

High-ISO noise is random luminance and color variation that becomes more visible in high-sensitivity capture. Irregular luminance and color speckles appear, especially in darker areas. It does not determine film grain, post-processing, or a particular camera model.

In more detail

It changes the appearance of image color, tone, or texture. It is distinct from artificial post-processing and from depicting equipment itself.

Includes

  • Random luminance and color variation that becomes more visible in high-sensitivity capture

Excludes

  • film grain, post-processing, or a particular camera model

What this does not imply

  • film grain, post-processing, or a particular camera model

Variability

Effect strength and color bias can be adjusted separately.

Usage and adjustments

Usage

  • Use it as a capture-derived appearance

Distinguish similar expressions

  • Do not use it for post-processing or for equipment as a pictured subject

Typical uses

  • Add random luminance and color variation that becomes more visible in high-sensitivity capture

Possible failure modes

  • The effect becomes overly strong and harms image legibility

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