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"Hot" pixels - awful pictire...

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Offline GrAnd

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"Hot" pixels - awful pictire...
« on: 09 / March / 2008, 17:24:25 »
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First row - three "hot pixels" in the first shot of a series.
Second row - the same "pixels" from the 8th shot.
(6x zoomed in)


« Last Edit: 09 / March / 2008, 17:26:19 by GrAnd »
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Offline intrnst

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Re: "Hot" pixels - awful pictire...
« Reply #1 on: 09 / March / 2008, 19:18:49 »
Quote from: GrAnd on 09 / March / 2008, 17:24:25
First row - three "hot pixels" in the first shot of a series.
Second row - the same "pixels" from the 8th shot.
(6x zoomed in)




    - As I suspected! - said Dr. Watson with great delight.

With lens cap or what? And about the shooting interval?
I think this bring us back to the auto_caps_on_shooting_function...

« Last Edit: 09 / March / 2008, 19:20:41 by intrnst »
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Offline Barney Fife

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Re: "Hot" pixels - awful pictire...
« Reply #2 on: 09 / March / 2008, 22:02:55 »
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« Last Edit: 22 / April / 2008, 13:59:06 by Barney Fife »
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Offline GrAnd

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Re: "Hot" pixels - awful pictire...
« Reply #3 on: 10 / March / 2008, 02:55:26 »
More details about that pictures...
Camera A610. Without CHDK. Shutter speed was 1s (so, no dark frame subtraction). Manual mode. Shots were made in dark room with lens closed by a cap. All 8 shots were taken within 40sec interval.
Post processed in Photoshop (only levels: 0-4.50-127).
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Offline intrnst

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Re: "Hot" pixels - awful pictire...
« Reply #4 on: 11 / March / 2008, 05:43:52 »
Quote from: GrAnd on 10 / March / 2008, 02:55:26
More details about that pictures...
Camera A610. Without CHDK. Shutter speed was 1s (so, no dark frame subtraction). Manual mode. Shots were made in dark room with lens closed by a cap. All 8 shots were taken within 40sec interval.
Post processed in Photoshop (only levels: 0-4.50-127).



@GrAnd
Thanks for the info.

@both
Perhaps I'm wrong, but... is it correct to think that the caps on feature is still absent in CHDK because no one really needs it?
I mean, these threads didn't go very far indeed:

   Darkframe noise reduction
   long exposure- noise reduction = amp glow

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