ELPH 110 HS (IXUS 125 HS) Porting Thread - page 19 - DryOS Development - CHDK Forum
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ELPH 110 HS (IXUS 125 HS) Porting Thread

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Offline waterwingz

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Re: ELPH 110 HS (IXUS 125 HS) Porting Thread
« Reply #180 on: 19 / May / 2014, 06:45:11 »
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Quote from: Роман Глухов on 19 / May / 2014, 04:59:41
Hello! I have this camera with firmware 1.00D.  Can I use CHDK for 101a?
No.  You must use the version of CHDK that matches the firmware in your camera.  CHDK is available for the ELPH110 f/w version 1.00D so you should use that.

Quote
Is it possible to update the firmware to 101a?
You can only change the firmware on your camera if Canon releases an official update.  CHDK does not change anything permanently in the camera - it loads in RAM and goes away each time the camera is turned off.  The list of know Canon firmware updates is here : http://chdk.wikia.com/wiki/Official_Canon_firmware_updates

FWIW, some Canon P&S cameras only have one released firmware version (not necessarily 1.00A either). Others have as many as five or six.  Differences are typically small changes in thing like language strings.  If there is an actual bug with a camera's firmware, Canon will issue an update.  However that is pretty rare.
« Last Edit: 19 / May / 2014, 06:49:49 by waterwingz »
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Offline fabri22

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DNG WIDTH & HEIGHT
« Reply #181 on: 11 / June / 2014, 17:13:10 »
Full newbie question:
Why my ixus 125hs (with last stable CHDK) saves only 4028x3011 DNG (vs 4608x3456 jpg)?

Thanks for reply
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Offline waterwingz

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Re: DNG WIDTH & HEIGHT
« Reply #182 on: 11 / June / 2014, 17:17:21 »
Quote from: fabri22 on 11 / June / 2014, 17:13:10
Full newbie question:
Why my ixus 125hs (with last stable CHDK) saves only 4028x3011 DNG (vs 4608x3456 jpg)?
When I look in the platform_camera.h file for the ixus125,  it seems that the DNG resolution should be 4680x3498 ? 
« Last Edit: 11 / June / 2014, 17:22:15 by waterwingz »
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Offline fabri22

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Re: DNG WIDTH & HEIGHT
« Reply #183 on: 11 / June / 2014, 18:32:58 »
Quote from: fabri22 on 11 / June / 2014, 17:13:10
...my ixus 125hs (with last stable CHDK) saves only 4028x3011 DNG (vs 4608x3456 jpg)?

OK now. Switching to the last Unstable CHDK (ixus125_elph110hs-101a-1.3.0-3462-full_ALPHA)
DNG size is fine 4608x3456, as jpgs.
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Offline srsa_4c

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Re: DNG WIDTH & HEIGHT
« Reply #184 on: 11 / June / 2014, 18:42:16 »
Quote from: fabri22 on 11 / June / 2014, 18:32:58
Quote from: fabri22 on 11 / June / 2014, 17:13:10
...my ixus 125hs (with last stable CHDK) saves only 4028x3011 DNG (vs 4608x3456 jpg)?

OK now. Switching to the last Unstable CHDK (ixus125_elph110hs-101a-1.3.0-3462-full_ALPHA)
DNG size is fine 4608x3456, as jpgs.
That's odd. Can you upload one of the 'bad' DNGs somewhere?
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Offline fabri22

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Re: ELPH 110 HS (IXUS 125 HS) Porting Thread
« Reply #185 on: 11 / June / 2014, 19:21:41 »
After a deep investigation i've found the guilty of dng downsizing.
"DNG Recover Edges" a little software that i commonly use to recover pixels from my reflex RAWs.
Strangely it downsized my canon crw/dng instead of recover edges.

BTW i confirm that dng are 4680x3498 as expected (without the "DNG Recover Edges" pass)




« Last Edit: 11 / June / 2014, 19:25:54 by fabri22 »
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Offline reyalp

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Re: ELPH 110 HS (IXUS 125 HS) Porting Thread
« Reply #186 on: 11 / June / 2014, 22:54:11 »
Quote from: fabri22 on 11 / June / 2014, 19:21:41
BTW i confirm that dng are 4680x3498 as expected (without the "DNG Recover Edges" pass)
FWIW, there are two sizes defined in the DNG:
1) "default crop", which should be the same size as the largest jpeg
2) "active area", which should be all the pixels that contain image data.

Which one is used depends on the DNG processing software.

Also while the "default crop" is the same resolution as the jpeg, it generally does not contain the same image, for two reasons:
1) The canon firmware may do significant distortion correction on the jpeg, so the final pixels on the jpeg don't correspond exactly to pixels in the raw data
2) CHDK makes the default crop centered on the sensor active area, while the firmware may use a different location.
« Last Edit: 15 / June / 2014, 21:07:19 by reyalp »
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Offline fabri22

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Re: ELPH 110 HS (IXUS 125 HS) Porting Thread
« Reply #187 on: 12 / June / 2014, 17:34:52 »
Indeed i use Lightroom 5 to develop Ixus 125 DNGs.
After a bit of troubles, this workflow is fine with me:

-Import DNGs by choosing "Copy" (avoid "Copy as DNG" cause it could resize pictures)
-Apply "DNG Recover Edges" to imported files to maximize picture size
-Develop DNGs according to your taste.

Here a lens profile for IXUS 125 HS (extract to C:\Users\yourname\AppData\Roaming\Adobe\CameraRaw\LensProfiles\1.0)

and two of mine preferred Lightroom develop presets (100 ISO & 800 ISO) (extract to C:\Users\yourname\AppData\Roaming\Adobe\Lightroom\Develop Presets)

just to thank your kind replies ... and make you forgive my bad English :)
« Last Edit: 13 / June / 2014, 17:24:28 by fabri22 »
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Offline fabri22

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Re: ELPH 110 HS (IXUS 125 HS) Porting Thread
« Reply #188 on: 13 / June / 2014, 15:35:53 »
IXUS 125 HS Lens Profile updated.
Now it works fine with longer focal lenghts.

... and Lightroom Develop Presets updated (100 ISO & 800 ISO)
« Last Edit: 13 / June / 2014, 17:23:25 by fabri22 »
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Offline fabri22

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Re: ELPH 110 HS (IXUS 125 HS) Porting Thread
« Reply #189 on: 14 / June / 2014, 20:58:32 »
The DISP key doesn't toggle RAW capture mode in <Alt> mode. (on last stable CHDK)

Any help?
« Last Edit: 14 / June / 2014, 21:00:44 by fabri22 »
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