PowerShot SX220 HS - Porting Thread - page 55 - General Discussion and Assistance - CHDK Forum

PowerShot SX220 HS - Porting Thread

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Offline reyalp

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Re: PowerShot SX220 HS - Porting Thread
« Reply #540 on: 22 / September / 2013, 15:02:19 »
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I have just tried chdk 1.2 on an sx 220 (Firmware Ver GM1.01B) and in every dng there is a right vertical white-red band that i need to crop.

Here is a dng: http://ubuntuone.com/49kAhm5e7Z07H7xtepVugi
Thanks for the report. Here's a test build with the active area adjusted based on your DNG. Please let me know if it looks OK so I can check it it.
Don't forget what the H stands for.

Re: PowerShot SX220 HS - Porting Thread
« Reply #541 on: 22 / September / 2013, 18:56:15 »
Just tried against my monitor and seems perfect! Thank you!

I have also a question: is there a way of disabling the popup flash every time the camera is turned on?

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Offline reyalp

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Re: PowerShot SX220 HS - Porting Thread
« Reply #542 on: 22 / September / 2013, 19:59:31 »
Just tried against my monitor and seems perfect! Thank you!
Thanks. It will be fixed in autobuild 3124 and later.
Quote
I have also a question: is there a way of disabling the popup flash every time the camera is turned on?
Not that I know of.
Don't forget what the H stands for.

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Offline nafraf

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Re: PowerShot SX220 HS - Porting Thread
« Reply #543 on: 22 / September / 2013, 20:17:03 »
@pshotuser
Could you test if video recording crash if OSD is enabled? I'm not sure if this bug affect sx220, It was  solved on sx230 recently.


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Offline msl

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  • A720 IS, SX220 HS 1.01a
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Re: PowerShot SX220 HS - Porting Thread
« Reply #544 on: 23 / September / 2013, 04:57:09 »
@reyalp
I'm not sure if the active area patch was correct. I can not see any bad areas in my DNG files with the old code. When you are correct also the SX230 is affected!

The SX220/230 was in last years one of the most successful canon models. Many people use CHDK with this cameras. Nobody else has reported this issue in last two years.

I see only some shodows in the corners. But this is because of the lense distortion. Here are my Files with the old code (DNG version 1.3)

DNG file 1 (normal picture): https://chdkde.box.com/s/8yanturct50qk8kilxn8
DNG file 2 (black picture): https://chdkde.box.com/s/o31iwbc5khayacta6l7i

Btw, funnel has made an intensive porting job.

@nafraf
The video capture works fine. There is no OSD problem. But it could be usefull also rework the code for the SX220. I think it is better we have an uniform code with the SX230.


CHDK for the SX220 works fine. There is only one Problem. The option 'super fine' for JPG files is not useable. The file size is smaler as with the option 'fine'. It seems to be a memory problem - read more ine the first pages of this thread.

I also have the feeling, in some cases the file size of the JPG file is smaller as without CHDK. But it is quite difficult to demonstrate this concretely.

msl
CHDK-DE:  CHDK-DE links

Re: PowerShot SX220 HS - Porting Thread
« Reply #545 on: 23 / September / 2013, 05:03:21 »
@pshotuser
Could you test if video recording crash if OSD is enabled? I'm not sure if this bug affect sx220, It was  solved on sx230 recently.

I have tried with a pair of fullhd videos with osd and it worked fine.

Re: PowerShot SX220 HS - Porting Thread
« Reply #546 on: 23 / September / 2013, 05:09:19 »
@reyalp
I'm not sure if the active area patch was correct. I can not see any bad areas in my DNG files with the old code. When you are correct also the SX230 is affected!

The SX220/230 was in last years one of the most successful canon models. Many people use CHDK with this cameras. Nobody else has reported this issue in last two years.

I see only some shodows in the corners. But this is because of the lense distortion. Here are my Files with the old code (DNG version 1.3)

DNG file 1 (normal picture): https://chdkde.box.com/s/8yanturct50qk8kilxn8
DNG file 2 (black picture): https://chdkde.box.com/s/o31iwbc5khayacta6l7i

I see them also in your files, from pixel column 4066.

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Offline msl

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Re: PowerShot SX220 HS - Porting Thread
« Reply #547 on: 23 / September / 2013, 06:12:40 »
I see them also in your files, from pixel column 4066.

Interesting. Thanks for the test.

What program do you use? I see nothing with Lightroom or the Adobe DNG codec as explorer extension. I am afraid that I can not see this strip, because the images are cropped with my software.

But this mean, the SX230 is also affected.

msl
CHDK-DE:  CHDK-DE links


Re: PowerShot SX220 HS - Porting Thread
« Reply #548 on: 23 / September / 2013, 06:18:33 »
You are right! I normally use raw therapee, and also with dcraw and ufraw i see that problem. With darktable for example seems to me it's already cropped away (sorry but i don't have Lightroom)

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Offline reyalp

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Re: PowerShot SX220 HS - Porting Thread
« Reply #549 on: 23 / September / 2013, 12:51:13 »
@reyalp
I'm not sure if the active area patch was correct. I can not see any bad areas in my DNG files with the old code. When you are correct also the SX230 is affected!
Some programs use the "default crop", which CHDK sets as the same size as the jpeg, centered.

Other programs (like irfanview and therapee) use the "active area" which is based on which pixels show image data.

I'm pretty sure my adjustment is right for the active area. Your image shows a white border on the right for me in irfanview. The process I use is as follows
in chdkptp
dngload <filename>
dngdump -raw -rfmt=8pgm

This dumps the full image data as a pgm.

Open the pgm file in gimp, adjust brightness/contrast as needed to see the borders, and measure using the selection tool.
Don't forget what the H stands for.

 

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