Build 37 shuts down S3 on change to MF - AllBest's Builds - CHDK Forum
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Build 37 shuts down S3 on change to MF

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Offline pshute

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Build 37 shuts down S3 on change to MF
« on: 09 / March / 2008, 23:24:57 »
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I've just installed build 37 and I'm trying to use focus bracketing.  Thinking I was setting the bracketing, I set the Override Subj. Dist Value to 100 and the Value Factor to 1.  With these settings I tried to change to manual focus and each time I tried, the camera shut down with the lens still out.

The bracketing worked ok (brilliantly) when I did it properly, but is the above a bug?

What is the Override Subj. Dist Value for?  Isn't that what MF is for?  Is it just there to allow presetting it?
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Offline pshute

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Re: Build 37 shuts down S3 on change to MF
« Reply #1 on: 10 / March / 2008, 17:56:10 »
Now it's shutting it down as soon as I start shooting.  It's ok when I half press the shutter, but shuts down as soon as I press it all the way down.  It did this several times so I took out the memory card and switched off the write protection to prevent this software from auto installing.  I took several shots without problems after that, so it's definitely something to do with the software.

Strange that it was ok yesterday.  Could it possibly be something to do with my camera?
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Offline wontolla

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Re: Build 37 shuts down S3 on change to MF
« Reply #2 on: 10 / March / 2008, 18:20:37 »
The same happened to me a few days ago but didn't pay much attention. Let me see if I can reproduce the problem so we can give more details about this.
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Offline pshute

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Re: Build 37 shuts down S3 on change to MF
« Reply #3 on: 11 / March / 2008, 00:32:54 »
For what it's worth, I just did a reset to change all options to the defaults, and now the bracketing is ok again.

I had previously been using the standard build, and simply installed this build over the top.  I wonder if it could have been affected by settings from the previous installation.
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Offline pshute

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Re: Build 37 shuts down S3 on change to MF
« Reply #4 on: 12 / March / 2008, 01:12:13 »
Quote from: pshute on 11 / March / 2008, 00:32:54
For what it's worth, I just did a reset to change all options to the defaults, and now the bracketing is ok again.
And I should probably report that it's doing it again, despite changing nothing.  I don't see how something like this could be intermittent.  Perhaps it depends on what the focus distance is when you lock it with MF.
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Offline Allbest

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Re: Build 37 shuts down S3 on change to MF
« Reply #5 on: 12 / March / 2008, 05:08:19 »
Quote from: pshute on 12 / March / 2008, 01:12:13
I've just installed build 37 and I'm trying to use focus bracketing.  Thinking I was setting the bracketing, I set the Override Subj. Dist Value to 100 and the Value Factor to 1.  With these settings I tried to change to manual focus and each time I tried, the camera shut down with the lens still out.
Hi!
To do SD override (or bracketing) with s3 you need turn on MF-mode
« Last Edit: 12 / March / 2008, 05:16:10 by Allbest »
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Offline pshute

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Re: Build 37 shuts down S3 on change to MF
« Reply #6 on: 13 / March / 2008, 00:41:46 »
Quote from: Allbest on 12 / March / 2008, 05:08:19
To do SD override (or bracketing) with s3 you need turn on MF-mode
You mean by pressing the MF button?  As soon as I do that the camera shuts down.  Do you have any things I can try to help find out why this is happening?
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Offline Allbest

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Re: Build 37 shuts down S3 on change to MF
« Reply #7 on: 13 / March / 2008, 05:56:47 »
Quote from: pshute on 13 / March / 2008, 00:41:46
You mean by pressing the MF button?  As soon as I do that the camera shuts down.  Do you have any things I can try to help find out why this is happening?
Yes. Your camera must be in manual focus mode.
1.Set manual focus mode
2.Set subject distance override value (value + factor)
3.Half press shutter release button
If you have an error here than first of all drop chdk.cfg from your flash card and then repeat all of above-mentioned steps. And please report about your results
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Offline pshute

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Re: Build 37 shuts down S3 on change to MF
« Reply #8 on: 13 / March / 2008, 18:26:57 »
Quote from: Allbest on 13 / March / 2008, 05:56:47
Quote from: pshute on 13 / March / 2008, 00:41:46
You mean by pressing the MF button?  As soon as I do that the camera shuts down.  Do you have any things I can try to help find out why this is happening?
Yes. Your camera must be in manual focus mode.
1.Set manual focus mode
2.Set subject distance override value (value + factor)
3.Half press shutter release button
If you have an error here than first of all drop chdk.cfg from your flash card and then repeat all of above-mentioned steps. And please report about your results
OK, I'm a little confused now.  I was under the impression that if I didn't set a subject distance override, that the bracketing would be based on whatever subject distance the camera was set to when I locked it by pressing MF.  Is this not true?

If I have to use your subject distance override then what should happen if I haven't set one?  Could that be the cause of the crashes?

And I don't understand why it seems to work ok sometimes but not others.  I haven't yet had time to delete chkd.cfg, so that could solve everything.
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Offline Allbest

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Re: Build 37 shuts down S3 on change to MF
« Reply #9 on: 14 / March / 2008, 04:37:47 »
Quote
that the bracketing would be based on whatever subject distance the camera was set to when I locked it by pressing MF.  Is this not true?
This is true. Algorithm of CHDK bracketing supposes that if subject distance override value is not set  than current value of manual focuse distance is used. But there is some trouble with focus lock :( My camera is hangs up too...
I suggest you to do next sequence of actions:
1.Turn on MF-mode (clearly without focus lock)
2.Change camera drive mode to continuous
3.Set some value for focus distance (via Canon native ability or via CHDK override (set value in menu or  in MF+alt mode)
4.Set some bracketing values
5.Start
I think that in this case all will be alright
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