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CHDK window flickers

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Offline ju1234

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CHDK window flickers
« on: 09 / May / 2018, 10:08:53 »
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ON my SX400 IS, some times, the CHDK window flickers. It does not happen all the time. When it does happen, there is no fixed frequency. I have not found any specific factors or circumstances in which this happens. When it does happen, it happens in all CHDK screens: all the menu screens, or even the small "countdown interval ALT" window. The whole CHDK window flickers so one cannot read or set any thing during those flickers. Only the CHDK window flickers and the the entire display screen. This does not happen on my other cameras (SX30, SX530). I have identical scripts and other folders set on all these cameras.

Solutions? Thanks.
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Offline c_joerg

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Re: CHDK window flickers
« Reply #1 on: 09 / May / 2018, 16:41:53 »
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Online reyalp

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Re: CHDK window flickers
« Reply #2 on: 09 / May / 2018, 17:16:21 »
Quote from: c_joerg on 09 / May / 2018, 16:41:53
Quote from: ju1234 on 09 / May / 2018, 10:08:53
Solutions?

Reply #126 might be helpful
https://chdk.setepontos.com/index.php?topic=12758.msg132871#msg132871
FWIW, Digic 6 cameras are significantly different from other models, so the specific details may be different. However, the general explanation is the same: When the Canon UI updates, the CHDK UI flickers.
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Offline ju1234

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Re: CHDK window flickers
« Reply #3 on: 10 / May / 2018, 08:55:58 »
So, this is some thing I have to live with and work around the problem.
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Offline waterwingz

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Re: CHDK window flickers
« Reply #4 on: 10 / May / 2018, 10:02:07 »
Quote from: ju1234 on 10 / May / 2018, 08:55:58
So, this is some thing I have to live with and work around the problem.
Try to do most of your setup work with the camera in Playback mode. You will have a lot less flickering.
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Ported :   A1200    SD940   G10    Powershot N    G16
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Offline blackhole

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Re: CHDK window flickers
« Reply #5 on: 10 / May / 2018, 13:31:24 »
Quote from: ju1234 on 10 / May / 2018, 08:55:58
So, this is some thing I have to live with and work around the problem.
Set the "AF Frame" to the "Center" in Canon's menu, this will dramatically reduce flickering.
Be sure you are not in the AUTO shooting mode,in this mode,flickering can be very frequent.
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Offline c_joerg

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Re: CHDK window flickers
« Reply #6 on: 10 / May / 2018, 13:52:05 »
Quote from: waterwingz on 10 / May / 2018, 10:02:07
Try to do most of your setup work with the camera in Playback mode. You will have a lot less flickering.

Maybe it is stupid but ...
Could CHDK automatically open a Canon menu each time before the CHDK menu opens? Then it never seems to flicker with me ...
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Offline waterwingz

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Re: CHDK window flickers
« Reply #7 on: 10 / May / 2018, 14:08:57 »
Quote from: c_joerg on 10 / May / 2018, 13:52:05
Maybe it is stupid but ...
Could CHDK automatically open a Canon menu each time before the CHDK menu opens? Then it never seems to flicker with me ...
That would be quite easy to implement.  Just fake a MENU key press before opening the CHDK menu.

Actually not a totally bad idea. And it would work with pretty much any CHDK supported camera.

The most obvious problem that I can see is that most ports don’t currently have color palettes picked to look good when the Canon menu is active.
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Ported :   A1200    SD940   G10    Powershot N    G16
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Offline ju1234

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Re: CHDK window flickers
« Reply #8 on: 10 / May / 2018, 15:47:30 »
Hello Backhole, Thank you. Setting the AF Frame to center has eliminated the flicker.

I am not sure what you mean by "be sure you are not in AUTO shooting mode". The SX400 is a fully auto camera with no manual controls.
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Online reyalp

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Re: CHDK window flickers
« Reply #9 on: 10 / May / 2018, 16:58:03 »
Quote from: ju1234 on 10 / May / 2018, 15:47:30
I am not sure what you mean by "be sure you are not in AUTO shooting mode". The SX400 is a fully auto camera with no manual controls.
If you use P mode, you should be able to control the features that make the canon display update all the time. In AUTO, you often can't turn off things like face tracking.
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