PowerShot SX220 HS - Porting Thread - page 36 - General Discussion and Assistance - CHDK Forum

PowerShot SX220 HS - Porting Thread

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Re: PowerShot SX220 HS - Porting Thread
« Reply #350 on: 09 / August / 2011, 13:54:18 »
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Concerning my troubles with video, now I've made some tests and
no problem has occurred. I have updated CHDK yesterday. I hope,
this version is more stable and everything will be fine with video.

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Offline msl

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Re: PowerShot SX220 HS - Porting Thread
« Reply #351 on: 11 / August / 2011, 16:56:18 »
Hi funnel,

there is a new firmware version 1.01b. Breadstone from the German CHDK forum has made a dump.

dump sx220 1.01b

Maybe you can start a port. Breadstone would be very happy.

msl
CHDK-DE:  CHDK-DE links

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Offline funnel

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Re: PowerShot SX220 HS - Porting Thread
« Reply #352 on: 11 / August / 2011, 17:41:29 »
Ok, I'll take a look at it.

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Offline funnel

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Re: PowerShot SX220 HS - Porting Thread
« Reply #353 on: 12 / August / 2011, 03:51:20 »
I made a test version for 1.01b. Looks like the differences were at the same places as between 100a and 101a.

http://www.box.net/shared/c6xteu4pkiosbxp9y7u2
« Last Edit: 12 / August / 2011, 04:16:37 by funnel »

Re: PowerShot SX220 HS - Porting Thread
« Reply #354 on: 12 / August / 2011, 08:29:02 »
I've found one strange thing for RAW. The image in RAW sometimes looks curved and distorted especially
on the edges as after fisheye effect. However, in jpeg everything looks ok. Moreover, picture is larger
(contains more information) in RAW than in jpeg but with the same resolution. It looks like camera cuts
RAW while preparing jpeg. Is it normal for chdk?

Re: PowerShot SX220 HS - Porting Thread
« Reply #355 on: 12 / August / 2011, 08:36:09 »
Another question: is there any possibility to speed up writing of RAWs? I use class10 SDHC card
but one shots takes about 5 sec. So, one can forget about serial shot or bracketing with RAWs.
I saw a CHDK option "RAW buffer cached", but I don't see any difference in working time.

Re: PowerShot SX220 HS - Porting Thread
« Reply #356 on: 12 / August / 2011, 09:27:44 »
The image in RAW sometimes looks curved and distorted especially
on the edges as after fisheye effect.


That is because it is.

That is the image your lens really creates.

The JPG has had the distortions corrected because the Canon firmware 'invents' new pixels that were not originally there.

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Offline funnel

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Re: PowerShot SX220 HS - Porting Thread
« Reply #357 on: 12 / August / 2011, 13:29:55 »
Funnel, did you change anything that can and/or did affect the save raw option?

I took some pictures (in Tv) and not all raws were saved. Some of the raws that the camera did save are not labelled correct (IMG_01 = CRW_02).

(8GB SD, CHDK 0.9.9-1266, FW 100a)

This issue is fixed in the latest build(1290).

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Offline msl

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  • A720 IS, SX220 HS 1.01a
    • CHDK-DE links
Re: PowerShot SX220 HS - Porting Thread
« Reply #358 on: 12 / August / 2011, 15:50:25 »
I made a test version for 1.01b. Looks like the differences were at the same places as between 100a and 101a.

It seems to work. Somebody from another german photo forum has this reported. RAW/DNG are ok. OSD functions are all ok. I have no informations about overrides.

msl
CHDK-DE:  CHDK-DE links

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Offline funnel

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Re: PowerShot SX220 HS - Porting Thread
« Reply #359 on: 12 / August / 2011, 17:09:08 »
I made a test version for 1.01b. Looks like the differences were at the same places as between 100a and 101a.

It seems to work. Somebody from another german photo forum has this reported. RAW/DNG are ok. OSD functions are all ok. I have no informations about overrides.

msl
I noticed I missed one BL in movie_rec.c that can cause problems in video recording. Now everything should work.

http://www.box.net/shared/8npcc297qm73nfin6dl3

 

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