SX110IS - howto start porting

chdkj

He Yarvieh,

glad to hear from you. I would swear like a trooper about that color haze if I would not be so well-mannered... 😉))

Regards!

nerdboy4200

Hi all,

I've had a SX110IS for a while (since December) and have been watching this forum since it started up. I have noticed that those who were finding the color matrix were using a program which reads only 10-bit color raw files.

You might be interested to know that Dave Coffin has finally added in SX110IS support into his dcraw program (http://www.cybercom.net/~dcoffin/dcraw/) program. Since his program fully supports 12-bit images, it may be better than the other since it can output 16-bit images AND can read 12-bit raw files.

Just my 2 cents..

hnsight

Barring any freakish coincidences, I am having a battery-related issue when using CHDK. It seems as though battery life has decreased dramatically since I loaded it (by well over 50%). Has anyone else experienced this issue?

hnsight

I'm retarded. A quick search provided all sorts of enlightenment.

reyalp

I've updated CAM_BLACK_LEVEL to 128 in the trunk.

axu89

Yarvieh
You`re wrong in several points here, jpg's use 8 bit per channel not 10, the dng file format supports 12 bit data just fine and we are keeping all 12 bits no data is being converted. The problem is not that there is 'some' difference the dng looks like someone put a heavy blue filter on. Thanks for thinking along with us but though.

We got rid of the blue haze with cam_black_level 128 😀
Still my calibration has little too highly saturated reds (see last page with couple of pictures)...

Im off for 2 weeks now 😎

sweetcow

Hi, I'm concerned about CHDK for SX110 for long time. I've learned that color matrix is the obstruction to converting raw files of SX110 by browse this bbs.

I have a idea but I donot know it works or not. we can disassemblers or decompilers the firmwares and find out how it deal with raw files, or find out the functions or code segments which deal with raw files.

I'm not a programmer and also have no experience about crack. I donot know this idea is feasible or not.

chdkj

sweetcow
I have a idea but I donot know it works or not. we can disassemblers or decompilers the firmwares and find out how it deal with raw files, or find out the functions or code segments which deal with raw files.

There are some discussions in forum about this topic. I tried to draw that secret from firmware but gave up at some point. It's not only about finding the color matrix you have to translate it also from some sort of Canon presentation to "real world" numbers.

I'm also encountering the battery drain-out problem, even without CHDK. Batteries are fully loaded and my camera stops very very quickly (after a few shots) and complains "change batteries...".

Ok, I'm off until the end of the week...

Regards!

Obihoernchen

Lol i tried a little bit more with RAW and I got a 100 same picture with DNG4PS-2.exe from Yariveh!
And it doesnt matter wheather I use Blacklevel 127 or 128 o0

Here are the Pictures:
(All compressed with IrfanView @ JPEG @ 1024x768 @ 90%)
From left to right: Blacklevel 127 JPEG | Blacklevel 127 RAW | Blacklevel 128 JPEG | Blacklevel 128 RAW | Blacklevel 128 JPEG_2 | Blacklevel 128 RAW_2

What that 😛 😛 😛 Why they match 100% ??? 😛 😛 😛 NO HAZE OR SOMETHING ELSE 😁 😁

Here I uploaded the original files: http://rapidshare.com/files/234417159/128_2.rar

I also tried dcraw but the results are really bad with 127 and 128!

IlGranTrebeobia

Hi
I usually use FastStone Image Viewer, it works somehow 😁
Here your files:

jpg 1600x1200	dng->jpg 1600x1206

Frida

I have perhaps some stupid questions about camera black level.
Does this apply to all models using the chdk?
Is it for using the conversion to DNG in camera or does the DNG4PS2 program work with this change?
I use the DNG4PS2 because converting to dng in camera took to much time but I'm not always pleased with how the DNG-files comes out.
I have a PS S5IS firmware 1.01B

zodiac757

I've the power on problem again. Sometimes in play mode too - using on/off or play button too.

chdkj

Frida
Does this apply to all models using the chdk?

No, it doesn't. Black level is set to 31 per default. But each camera might use an other value for it. S5is uses 31. Have a look at camera.h....

FridaIs it for using the conversion to DNG in camera or does the DNG4PS2 program work with this change?

As far as I've understood Black Level is used as a threshold in RAW pictures and also will be written as descriptive value in DNG-file. It's definitly not a clear answer to your question but I don't know how DNG4PS works.

chdkj

zodiac757
I've the power on problem again. Sometimes in play mode too - using on/off or play button too.

Remember it but I'm to lazy to search for...Could you describe it in more details, please?

zodiac757

when I try to turn on the camera sometimes it doesn't do...
pressing/holding "play" or "on/off" button too

the blue and the green led blinks but sometimes the camera turns off
in rec mode the objective comes out - camera off

Obihoernchen

I never had this bug after the startsound fix...

zodiac757

I've tried
- to turn off Canon menu - Power saving - Auto turn off
- to turn on Canon welcome screen
- to turn on CHDK welcome screen
all sounds were always disabled

next:
- I'll try to format SD card again (A-Data SDHC 4 Gb, Class 6)
- or try to turn ON chdk welcome sounds :]

I see black screen too but the screen turns off when I release the button (play, or on/off). (I can hold for minutes.)

chdkj

Strange.
Are you using the latest CHDK version from autobuild?

Blue led means CHDK is starting up.
What happens if you are using regular Canon startup? Did you encounter similar problems?

First of all, I'm using firmware update method as default startup method. Camera will be started in normal Canon mode and I can decide if I'm using Canon or CHDK mode. I have some trouble with battery power but not generally with startup.

Obihoernchen

I use SD Card protection mode and it is always starting...

chdkj

Yes, it's definitly independent from startup method. But I would give a hint to zodiac757 how to narrow down the problem. I think, fw update method could help, because Canon mode startup and CHDK startup will execute one after one. If the camera "dies" already in Canon mode, so it might be a hardware problem (and I think it is one but only if zodic757 uses the latest CHDK version).

« Previous Page Next Page »