PowerShot SX230 HS - Porting Thread - page 68 - General Discussion and Assistance - CHDK Forum
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PowerShot SX230 HS - Porting Thread

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Offline reyalp

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Re: PowerShot SX230 HS - Porting Thread
« Reply #670 on: 26 / December / 2015, 16:20:29 »
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Quote from: Razor512 on 26 / December / 2015, 15:58:07
Yay,  updates, can't wait to try it today.
Note that this does not fix your long standing issue with raw in continuous mode. Sorry :(
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Offline srsa_4c

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Re: PowerShot SX230 HS - Porting Thread
« Reply #671 on: 18 / January / 2016, 20:18:10 »
I have checked in the patch discussed in this thread.
Trunk (CHDK 1.5) only.

This should improve JPEG quality. Testing is encouraged, please report any regressions.
(note: it does not fix the issue reported by Razor512).
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Offline ElenaBCN

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Re: PowerShot SX230 HS - Porting Thread
« Reply #672 on: 08 / August / 2018, 10:30:16 »
Hi everyone!  :)
I hope this thread is not too dead. First, thank for all the shared feedback already here and the work from all the contributors to this kit. I am still browsing through the info, so I apologise if I have missed something that's already there.
I recently discovered this CHDK world and I decided to get an SX230 HS. I was really impressed by this video ( because it was showing exactly the kind of results I was after.
After checking the firmware version (turned out to be 101c, according to the ACID tool), I downloaded the latest stable CHDK for my camera (sx230hs-101c-1.4.1-5084-full.zip) and copied over to my SD card.
I started my camera with the "Play" button, moved down to Firmware update, updated and the CHDK loads OK. I am not sure if it is relevant but I actually noticed that in the CHDK splashscreen it said "101b" and I am positive I downloaded and copied the 101c zip.
Anyway, I do not find the exact procedure to get that kind of video recording and the couple of "step-by-step" don't match exactly the options I have on my camera, including the one by our fellow member msl below (but this may be due to the fact that he owns a SX220, not a SX230, I don't know).
It would be great if anyone with the SX230 HS could shoot some short video and upload this tutorial about how they go through the CHDK to set the relevant options in order to record with the zoom lever to adjust the manual focus in video mode.
Alternatively, if anyone tells me the actual steps that work on my SX230, I do not mind recording that tutorial myself and sharing it later on YouTube.

Thanks in advance,

Quote from: msl on 16 / February / 2012, 11:16:25
MF in video works fine for me (SX220).  :)

Try the following steps:
- Choose P mode
- Switch into ALT mode and start CHDK menu.
- Select 'Extra Photo Operations', go to 'Override Subj. Dist. Value' and 'Value Factor (mm)'.
- Choose a step width in 'Value Factor (mm)', e.g. 10.
- Set a min. subject distance in 'Override Subj. Dist. Value'.
- Leave the menu & ALT mode.
- Choose MF and set subject distance with jogdial to a minimal value.
- Switch into ALT mode. Now you see the status display with subject distance and step width.
- Use the zoom lever. When you can change the subject distance, you have won.

Leave the ALT mode. Start video recording with MF mode. Switch into ALT mode and use the zoom lever for subject distance.

msl
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Offline reyalp

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Re: PowerShot SX230 HS - Porting Thread
« Reply #673 on: 10 / August / 2018, 01:16:39 »
Quote from: ElenaBCN on 08 / August / 2018, 10:30:16
I started my camera with the "Play" button, moved down to Firmware update, updated and the CHDK loads OK.
Note that the "firmware update" method just loads CHDK once, until you turn off the camera. If you use CHDK regularly, you'll want to use the bootable SD card method: https://chdk.wikia.com/wiki/Bootable_SD_card

Quote
I am not sure if it is relevant but I actually noticed that in the CHDK splashscreen it said "101b" and I am positive I downloaded and copied the 101c zip.
This is normal, 101b and 101c use the same CHDK version.

Quote
Anyway, I do not find the exact procedure to get that kind of video recording and the couple of "step-by-step" don't match exactly the options I have on my camera, including the one by our fellow member msl below (but this may be due to the fact that he owns a SX220, not a SX230, I don't know).
I believe SX220 and SX230 should work exactly the same, the only difference should be GPS. CHDK has changed a bit since 2012 so some of the options might have slightly different names, but I was able to follow the steps in msl's post on sx710 to focus manually with the zoom lever.

If you can explain which options are missing or what didn't work, we might be able to point you in the right direction.
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Offline ElenaBCN

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Re: PowerShot SX230 HS - Porting Thread
« Reply #674 on: 10 / August / 2018, 11:20:44 »
Quote from: reyalp on 10 / August / 2018, 01:16:39
Note that the "firmware update" method just loads CHDK once, until you turn off the camera. If you use CHDK regularly, you'll want to use the bootable SD card method: https://chdk.wikia.com/wiki/Bootable_SD_card
Thanks  :)
I had read about it but I first wanted to try it a little before going for the bootable SD card. Anyway, it is quite simple so I went ahead, and I now have the bootable version.

Quote
This is normal, 101b and 101c use the same CHDK version.
Thanks for the confirmation!

Quote
I believe SX220 and SX230 should work exactly the same, the only difference should be GPS. CHDK has changed a bit since 2012 so some of the options might have slightly different names, but I was able to follow the steps in msl's post on sx710 to focus manually with the zoom lever.
If you can explain which options are missing or what didn't work, we might be able to point you in the right direction.

Here are some screenshots of what these CHDK menus look like in my camera. I will go through it again over the weekend, and I will get back with the outcome. See you and thanks again for your help!  :)
http://subefotos.com/ver/?e3ba7f7a6ed78a42e87d808cb3e798a1o.jpg
« Last Edit: 10 / August / 2018, 11:23:36 by ElenaBCN »
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Offline ElenaBCN

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Re: PowerShot SX230 HS - Porting Thread
« Reply #675 on: 10 / August / 2018, 12:07:13 »
Right, I have been able to carry out a quick test. I does seem to work although I am not sure I get the meaning for each line under the "Enhanced Photo Operations" menu, which I am assuming is the 'Extra Photo Operations' that msl talked about.

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- Select 'Extra Photo Operations', go to 'Override Subj. Dist. Value' and 'Value Factor (mm)'.
- Choose a step width in 'Value Factor (mm)', e.g. 10.
As you will see in the screenshot I inserted in my previous message, there is no such thing as 'Value Factor (mm)' in my CHDK menu, and I have the feeling that this is the value I need to change.
Since the line that looks more similar is "Ev Step Value", this is the one I have made a couple of attempts with, but I cannot appreciate any difference.  :(

It takes ages to adjust the focus between objects that are 20 cm apart. Actually, I thought the focus would change by holding the zoom lever, but it looks like I have to press and release X times to move the focus within the range.
Is there a line in the menus to make this a bigger jump, e.g. each time I press the zoom lever the focus would move closer or further by 5 cm?
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Offline srsa_4c

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Re: PowerShot SX230 HS - Porting Thread
« Reply #676 on: 10 / August / 2018, 16:11:36 »
Quote from: ElenaBCN on 10 / August / 2018, 12:07:13
the "Enhanced Photo Operations" menu, which I am assuming is the 'Extra Photo Operations' that msl talked about.
Yes (it has been renamed).

You only need to enable "Override Subj. Dist." in the menu (and adjust its value). When adjusting numbers in CHDK menu, use the zoom lever to change the step size (this, again, has changed since the tutorial was written).
After you start recording, enter ALT mode and use the zoom lever to adjust focus. You can also use the left and right buttons to change the size of focus steps (you should see the override value and step size on screen).
To turn off the annoying "help" screen in ALT mode, navigate to CHDK settings -> Menu settings -> Show <ALT> help screen and deselect it.
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Offline ElenaBCN

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Re: PowerShot SX230 HS - Porting Thread
« Reply #677 on: 13 / August / 2018, 14:46:46 »
Quote from: srsa_4c on 10 / August / 2018, 16:11:36
You only need to enable "Override Subj. Dist." in the menu (and adjust its value). When adjusting numbers in CHDK menu, use the zoom lever to change the step size (this, again, has changed since the tutorial was written).
After you start recording, enter ALT mode and use the zoom lever to adjust focus. You can also use the left and right buttons to change the size of focus steps (you should see the override value and step size on screen).
To turn off the annoying "help" screen in ALT mode, navigate to CHDK settings -> Menu settings -> Show <ALT> help screen and deselect it.
Thanks! The "help" screen was annoying indeed  ;)
I have followed those steps but, boy, does this still feel cumbersome. I know this is about hacking a camara which is not really meant to do this, I guess I had my expectations wrong.
I am going for another camera because I would like to play quite often with this manual zoom while recording and I need it to feel more convenient.

Anyways, in the meantime, maybe just two last questions about the bits I set as bold in the quote:
  • What is the impact of the subject distance value?
  • I am not sure yet I get the step value. For instance, what does "1k" mean as opposed to "1M"? Are these "one thousand mm" and "one million mm?
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Offline reyalp

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Re: PowerShot SX230 HS - Porting Thread
« Reply #678 on: 13 / August / 2018, 16:18:30 »
Quote from: ElenaBCN on 13 / August / 2018, 14:46:46
What is the impact of the subject distance value?
Subject distance is the focus distance.

Quote
I am not sure yet I get the step value. For instance, what does "1k" mean as opposed to "1M"? Are these "one thousand mm" and "one million mm?
Yes.
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Offline ElenaBCN

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Re: PowerShot SX230 HS - Porting Thread
« Reply #679 on: 14 / August / 2018, 15:13:39 »
Quote from: reyalp on 13 / August / 2018, 16:18:30
Quote from: ElenaBCN on 13 / August / 2018, 14:46:46
What is the impact of the subject distance value?
Subject distance is the focus distance.

Quote
I am not sure yet I get the step value. For instance, what does "1k" mean as opposed to "1M"? Are these "one thousand mm" and "one million mm?
Yes.
Got it. Thanks again for your replies!!  :)
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