<p>From <a href="https://en.wikipedia.org/wiki/Dynamic_range" rel="nofollow noreferrer">https://en.wikipedia.org/wiki/Dynamic_range</a></p>

<blockquote>
  <p>Dynamic range, abbreviated DR, DNR, or DYR is the ratio between the
  largest and smallest values that a certain quantity can assume.</p>
</blockquote>

<p>In the case of HDR, this refers to the ratio of the highest/lowest luminance values that can be perceived or represented.</p>

CC BY-SA 3.0
2017-11-07T07:43:09.977Z
2017-11-07T07:43:09.977Z
wip
<p>High Dynamic range, somtimes use as a feature in still image or in higher level in rolling image.
It means that your shot has been captured by camera that can hold all information about exposure (at least in 3 modes: Overexpos, Normal and Underexpos).
It is happening in high-end camera and high-end project.
With this feature, you have alot of control in CC step like a pro.</p>

CC BY-SA 3.0
2017-11-07T09:07:56.210Z
That's a nice explanation, but seems to miss answering the actual question, which didn't ask for what HDR is but just what the D in there derives from etymologically.
Christian Rau
CC BY-SA 3.0
2017-11-06T12:15:56.443Z
2017-11-06T12:15:56.443Z
Iman
<blockquote>
  <p><a href="http://www.dictionary.com/browse/dynamic" rel="noreferrer">Dynamic, adjective:</a></p>
  
  <p>1: pertaining to or characterized by energy or effective action; vigorously active or forceful; energetic:</p>
  
  <p>...</p>
  
  <p>4: of or relating to the range of volume of musical sound.</p>
</blockquote>

<p>HDR allows you to deal with high light energies. And such high energies could be characterized as being "vigorously active or forceful; energetic".</p>

<p>But I think the fourth definition is more suitable. Graphics and rendering are forms of signal processing, much like sound. So they share a lot in common. For example, the term "aliasing" originated in digital conversion of sound.</p>

<p>"High light energies" are the visual equivalent of "volume" in sound. So the "dynamic range" that you can record, the "range of volume" is high, as opposed to low.</p>

CC BY-SA 3.0
2017-11-03T13:59:27.610Z
2017-11-03T13:59:27.610Z
Nicol Bolas
<p>What's the meaning of the "dynamic" in "high dynamic range"?</p>

<p>Why use this word?</p>

CC BY-SA 3.0
2017-11-03T08:39:24.033Z
I *imagine* it's been borrowed from audio where, I guess, it implies you can have accurate reproduction at both high and low volumes (within the same piece of music)
Simon F
<rendering>
What's the meaning of the "dynamic" in "high dynamic range"?
chaosink
# What's the meaning of the "dynamic" in "high dynamic range"?

(Asked by: username_0 on 2017-11-03)

What's the meaning of the "dynamic" in "high dynamic range"?

Why use this word?

**Tags:** rendering

> **Comments:**
> **username_1**: I *imagine* it's been borrowed from audio where, I guess, it implies you can have accurate reproduction at both high and low volumes (within the same piece of music)  

---

## 3 answers

### Answer by username_5 on 2017-11-03. Score: 5 | Accepted answer

> [Dynamic, adjective:](http://www.dictionary.com/browse/dynamic)
>
> 1: pertaining to or characterized by energy or effective action; vigorously active or forceful; energetic:
>
> ...
>
> 4: of or relating to the range of volume of musical sound.

HDR allows you to deal with high light energies. And such high energies could be characterized as being "vigorously active or forceful; energetic".

But I think the fourth definition is more suitable. Graphics and rendering are forms of signal processing, much like sound. So they share a lot in common. For example, the term "aliasing" originated in digital conversion of sound.

"High light energies" are the visual equivalent of "volume" in sound. So the "dynamic range" that you can record, the "range of volume" is high, as opposed to low.


---

### Answer by username_2 on 2017-11-07. Score: 3

From <https://en.wikipedia.org/wiki/Dynamic_range>

> Dynamic range, abbreviated DR, DNR, or DYR is the ratio between the
> largest and smallest values that a certain quantity can assume.

In the case of HDR, this refers to the ratio of the highest/lowest luminance values that can be perceived or represented.


---

### Answer by username_3 on 2017-11-06. Score: -3

High Dynamic range, somtimes use as a feature in still image or in higher level in rolling image.
It means that your shot has been captured by camera that can hold all information about exposure (at least in 3 modes: Overexpos, Normal and Underexpos).
It is happening in high-end camera and high-end project.
With this feature, you have alot of control in CC step like a pro.

> **Comments:**
> **username_4**: That's a nice explanation, but seems to miss answering the actual question, which didn't ask for what HDR is but just what the D in there derives from etymologically.  

---

