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SX280 / 275 / 270 porting

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Offline reyalp

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Re: SX280 / 275 / 270 porting
« Reply #320 on: 04 / August / 2018, 17:11:28 »
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I figured out that the "i-contrast" in the standard menu cause the overexposures with bright light!!! "i-contrast" turned off and "custom auto ISO" works as expected!!!
Thanks for that, I added this info to the camera notes.
It's probably a safe bet that i-contrast interferes with quite a few CHDK functions. It is known to cause problems with raw raw develop at least: https://chdk.setepontos.com/index.php?topic=9601.0
« Last Edit: 04 / August / 2018, 17:13:52 by reyalp »
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Re: SX280 / 275 / 270 porting
« Reply #321 on: 06 / August / 2018, 05:14:38 »
It's probably a safe bet that i-contrast interferes with quite a few CHDK functions. It is known to cause problems with raw raw develop at least:


So far I've always thought that i-contrast has no effect on the RAW's and that only the dark areas in the JPG development are pushed up.

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Offline reyalp

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Re: SX280 / 275 / 270 porting
« Reply #322 on: 06 / August / 2018, 13:32:57 »
So far I've always thought that i-contrast has no effect on the RAW's and that only the dark areas in the JPG development are pushed up.
You're right, the strike-out above is because I mis-remembered the case in the linked thread, which only applies to "raw develop".

I wouldn't be surprised if i-contrast interacts badly in other situations where ISO overrides are involved.
Don't forget what the H stands for.

 

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