Started Dec 20, 2013 | Questions thread
AndyGM Contributing Member • Posts: 698
Re: Why ETTR?

ETTR principles don't involve changing the ISO setting at all. They involve shooting in RAW and changing the shutter speed and/or aperture to move the maximum exposed measure to the far right of the histogram, because that increases the signal to noise ratio, even if it means the image is essentially overexposed. You then downward adjust the exposure in post processing to reveal the headroom in the RAW file.

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