Why 'more or less stopped using ISO'?

Started Feb 19, 2014 | Questions thread
D Cox Forum Pro • Posts: 20,313
Re: Why 'more or less stopped using ISO'?

Iliah Borg wrote:

Brightening can be applied only to an image. Raw is not an image.

A digital image (as opposed to a film or a print) is an array of numbers with X, Y coordinates representing brightness levels at each point. Usually there are three values for each point, for the three primary colours.

A raw image is also an array of numbers stating the values read by the sensor at each X, Y point.

It is just as much an image file as is a TIFF or a GIF. JPGs could be regarded as corrupted image files.

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