Exposure control in a raw developer: misnomer?

Started Jan 30, 2013 | Discussions thread
Great Bustard Forum Pro • Posts: 40,751
Absolutely correct.

dosdan wrote:

As I understand it, the "Exposure Triangle" is composed of Scene Luminance, Shutter Speed, Aperture (or should that be "F-number"?). These 3 alone determine the number of photons captured by the sensor.


ISO Sensitivity plays a role in the rendered brightness of the outputted image. (As well as helping to mitigate the contribution to the total read noise of the ADC noise floor in most cameras.)


So, I take the phrase "exposing a shot" to refer to the capturing process, not the rendering process. With in-camera JPEG, these two processes are combined. When shooting raw, the development process is separated and postponed.


But most raw development programs have an "Exposure" adjustment control. But isn't this adjusting the brightness of the rendered output? If so, it has nothing to do with exposure and is a misnomer.

So what should this control be labelled? "Rendered Brightness"?


What about a suitable term for the combined capturing & rendering process, that doesn't confuse it with exposing?

Or we could just use the existing terms as they are defined.  It's funny, 'cause if you ask someone who considers ISO part of exposure, and you ask them if f/2.8 1/100 ISO 100 and f/5.6 1/100 ISO 400 result in the same exposure for a given scene, it's exceedingly rare that the answer to this simple yes or no question will take the form of "yes" or "no".

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