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ELPH300HS aka IXUS220HS - Porting Thread

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Re: ELPH300HS aka IXUS220HS - Porting Thread
« Reply #780 on: 09 / January / 2013, 11:46:08 »
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I want to disable RAW+JPG recording, I only want RAW to be stored on the SD Card.
Sorry - its not currently possible to do this with CHDK.  The JPG save is done in the Canon firmware and nobody has discovered a way to disable that.

Quote
This Menu http://chdk.wikia.com/wiki/CHDK_for_Dummies#Raw (http://images2.wikia.nocookie.net/__cb20071013223061/chdk/images/thumb/9/9c/Raw.jpg/200px-Raw.jpg) does not exist in my version, can't find that option. The described Menu is not there.
That menu does not disable saving JPG - it is only there to let you decide where the RAW image should be saved on some cameras  (in the same folder as the JPG or in its own folder).   Those menu items are currently part of the main RAW menu if they are implemented for your camera.

Ported :   A1200    SD940   G10    Powershot N    G16

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Offline reyalp

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Re: ELPH300HS aka IXUS220HS - Porting Thread
« Reply #781 on: 09 / January / 2013, 13:04:45 »
The JPG save is done in the Canon firmware and nobody has discovered a way to disable that.
To be pedantic (this is the internet after all :P), srsa_4cs filewrite stuff can be used to do this so a way has been discovered, it just hasn't been implemented in the trunk yet. It also needs new code for each camera.

We could add a "raw only" option when this stuff goes into the trunk, but it's not really clear what the benefit would be. It happens at the end of jpeg processing so the time saving will be very marginal. If you are worried about space, you could just choose a small jpeg resolution. The camera will still waste some resources for every shot because it thinks it wrote a jpeg. You also obviously wouldn't be able to review your pictures (possibly including recreview, I haven't checked that)

@FaKK
What benefit do you expect to gain from disabling jpeg?
Don't forget what the H stands for.

Re: ELPH300HS aka IXUS220HS - Porting Thread
« Reply #782 on: 09 / January / 2013, 13:51:01 »
To be pedantic (this is the internet after all :P), srsa_4cs filewrite stuff can be used to do this so a way has been discovered, it just hasn't been implemented in the trunk yet. It also needs new code for each camera.
Next time I'll just say "can't be done".
Ported :   A1200    SD940   G10    Powershot N    G16

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Offline FaKK

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Re: ELPH300HS aka IXUS220HS - Porting Thread
« Reply #783 on: 09 / January / 2013, 14:20:45 »
@FaKK
What benefit do you expect to gain from disabling jpeg?

So far I only got a 2Gig SD Card ready with CHDK (fat, bootable bla bla), so I just
- need some more Space plus I thought,
- might be faster. 
- safe battery (though my 220HS last very long!). As I develope all picture with Photoshop,
- don't need them JPGs anyway. Need to delete/overwrite them, more work for me.

Figured out "small" in Canon's setting is helping a little bit (DNG still full resolution) but then .. when I forget to put on SD write protection (to enable CHDK), I'll cry.



My Ixus' got a lucky day! Brand ne screen + newest CHDK version = looks nice :)
https://www.facebook.com/photo.php?fbid=247542898709427&set=a.247542838709433.60618.220902581373459&type=1&theater
Anybody needs a spare one? (glass broken, still works fine)
« Last Edit: 09 / January / 2013, 14:24:06 by FaKK »


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Offline reyalp

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Re: ELPH300HS aka IXUS220HS - Porting Thread
« Reply #784 on: 09 / January / 2013, 16:35:26 »
So far I only got a 2Gig SD Card ready with CHDK (fat, bootable bla bla)
- need some more Space
The IXUS 220 was released in 2011, so it will boot from FAT32. With SDHC cards somewhere under $1 / GB, a bigger card seems like the obvious choice.
Don't forget what the H stands for.

Re: ELPH300HS aka IXUS220HS - Porting Thread
« Reply #785 on: 11 / January / 2013, 07:54:38 »
Yesterday I made some night time lapse videos (just city lights with some traffic from the roof).

I've noticed that some pictures are blured (out of focus) and I don't know what is the reason? - example images of in and out of focus included in Attachment. Is it script (included INTERVAL.lua) or anything else (perhaps settings in a camera)

Camera settings when I took time lapse:
AF Frame: Center
AF Frame Size: Normal
Digital Zoom: Standard
AF-Point Zoom: off
Servo AF: off
AF-assist Beam: off

CHDK settings -> Extra Photo Operations
Override Shutter Speed: 3.2
Value Factor: 1
Override ISO Value: 1
Value Factor: 100

CHDK INTERVAL.LUA script settings:
interval (sec): 5

Here is the blured / out of focus version http://youtu.be/_CnW0F9I-pI (Please watch in FullHD or 4k resolution)

And here is the version where I took blured / out of focus images away: http://youtu.be/uH4qQk0ubuc (Please watch in FullHD or 4k resolution)
« Last Edit: 11 / January / 2013, 17:34:13 by frojnd »

Re: ELPH300HS aka IXUS220HS - Porting Thread
« Reply #786 on: 11 / January / 2013, 17:39:19 »
When I tried to edit it didn't allow me to include more attachments.

Anyway here are both exif files made with exiftool on ArchLinux.

The only big difference is Focus Distance Upper field:
in focus: 1.51 m out of focus: 65.53m
« Last Edit: 11 / January / 2013, 17:44:23 by frojnd »

Re: ELPH300HS aka IXUS220HS - Porting Thread
« Reply #787 on: 11 / January / 2013, 17:55:01 »
Here is the difference between those two photos presented with exiv2 tool on Linux:

The main difference is Subject distance for in_focus: 151 and for out of focus: 6553


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Offline srsa_4c

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Re: ELPH300HS aka IXUS220HS - Porting Thread
« Reply #788 on: 11 / January / 2013, 18:09:22 »
I've noticed that some pictures are blured (out of focus) and I don't know what is the reason?
Since your "subject" is distant and doesn't move, you may want to use subject distance override (perhaps combined with AF lock). You can also find more sophisticated scripts here in the forum for timelapse.

Re: ELPH300HS aka IXUS220HS - Porting Thread
« Reply #789 on: 11 / January / 2013, 19:27:43 »
What should the value be for Subject distance override? (something to infinity but I don't know number would represent that value).

Where do I set AF lock?

 

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