Why 'more or less stopped using ISO'?

Started Feb 19, 2014 | Questions thread
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xpatUSA
xpatUSA Senior Member • Posts: 7,533
Re: Why 'more or less stopped using ISO'?

D Cox wrote:

xpatUSA wrote:

Iliah Borg wrote:

The raw data are brightness values for the array of pixels.

Brightness is human perception. Measurements are not. Arrays of pixels on the sensor do not have brightness because they do not emit or even reflect light. I do not see how loose definitions and terms help.

Neither do I. I keep having to scroll up and check that I'm still in the Photographic Science and Technology forum

I call it Photographical Obfuscation (PO). If the correct scientific or technical word, for example, is 'illuminance', go ahead and say 'brightness' instead - thereby confusing everyone, who will now respond according to what they think 'brightness' is . . .

Perhaps some of us should head to WikiPedia and learn the correct words?

The numbers in the array are not illuminance.

That's it, DC? A classically negative one-line response? This is the Science and Technology Forum, for pity's sake.

Illuminance was an example word, not used with reference to an array of any sort. See emphasis in the quote above.

Perhaps you meant to tell us that the "numbers in the array" are proportional to illuminance for a period of time, i.e. lux.s?

Probably not, I'm done with this exchange

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Cheers,
Ted

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