ISO, DR and DxO benchmarking explained

Started Sep 26, 2012 | Discussions thread
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DjarumBlack Senior Member • Posts: 1,434
Sort of off topic..

I've always wondered what specifically is the difference between hardware gain for increased ISO or just pushing the RAW image farther? I believe some earlier tests were showing that in the first gen PENS that past ISO 1600 or 3200, it was just done in software.

I've also seen some comparisons with different cameras where ISO 400 vs pushed ISO 100 were almost identical. Other times the noise characteristics were very different.

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