I was wondering... in both releases DNG images cannot be created with a shutter speed of 1.3 seconds or longer. Is this a limitation in all CHDK releases, or just the SX-130IS?... I'm sort of curious
Another thing, can anyone get the ISO override to work? It seems ISO 80 is minimum and ISO 1600 is maximum. (nothing outside the already present values)
In general CHDK ISO override doesn't get you additional range, it just gives you control. Every time anyone has done a proper test, this has been confirmed. AFAIK the only reports of extreme ISO override working have not been accompanied by test data.
It may (or may not) be worth pointing out that the custom auto-ISO HI was able to go up to 1600 on the A700, where that camera's normal maximum ISO is 800. The result was the camera would underexpose images by up to a full stop in order to meet the shutter speed threshold in low light.
Quote from: Xplo on 16 / January / 2011, 21:10:21It may (or may not) be worth pointing out that the custom auto-ISO HI was able to go up to 1600 on the A700, where that camera's normal maximum ISO is 800. The result was the camera would underexpose images by up to a full stop in order to meet the shutter speed threshold in low light.Meaning actual sensor gain was not changed, correct ? Not sure what you are gaining. One stop under exposed means you are still getting the same gain as ISO800.
One thing you can do with ISO override is use a low ISO in "high ISO" mode, which gives you faster shooting low resolution images on some cameras (mostly digic 4 AFAIK). This "high ISO" is also not sensor gain, it's more like binning.
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