PowerShot SX220 HS - Porting Thread - page 54 - General Discussion and Assistance

msl

1280
A720 IS, SX220 HS 1.01a

Re: PowerShot SX220 HS - Porting Thread

« Reply #530 on: 25 / May / 2013, 15:31:05 »

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Standard grids are designed for 4:3 screens. The grids need to be adjusted for the 16:9 screen of the SX220.

Download package with grids for 16:9 LCD: http://forum.chdk-treff.de/viewtopic.php?p=23676#p23676
Online convert tool 4:3 => 16:9: http://www.c0ol.de/sx220/

msl

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rikbeter

10

Re: PowerShot SX220 HS - Porting Thread

« Reply #531 on: 25 / May / 2013, 15:32:32 »

thx MSL!

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A70
A570, SX220 and SX50
Seven years experience using CHDK

bombolo88

4

Re: PowerShot SX220 HS - Porting Thread

« Reply #532 on: 03 / June / 2013, 12:56:45 »

Hi guys,i am new with chdk.
i have an sx220hs camera and i would like to do long shutter speed photos,so i havee put chdk on sd and i set only this parameters on extra photo:

disable overrides: off
override shutter speed value: 20
value factor: 1
shutterspeed enum type: factor

so when i switch to camera mode i see on top left of the screen tv:20.00 correctly but when i take photos,they are all taken at 15 seconds and not 20!why?
thank you very much

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msl

1280
A720 IS, SX220 HS 1.01a

Re: PowerShot SX220 HS - Porting Thread

« Reply #533 on: 03 / June / 2013, 15:49:55 »

Have you measured the time? Or have you taken the value from the exif data?

If exif data:

CHDK cannot write override values in exif data of JPG files if Tv is > 15s. Make a DNG file and you get the correct exif data.

msl

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bombolo88

4

Re: PowerShot SX220 HS - Porting Thread

« Reply #534 on: 03 / June / 2013, 17:06:10 »

Quote from: msl on 03 / June / 2013, 15:49:55

Have you measured the time? Or have you taken the value from the exif data?

If exif data:

CHDK cannot write override values in exif data of JPG files if Tv is > 15s. Make a DNG file and you get the correct exif data.

msl

Thank you very much now it's all Clear!
Is it dangerous for the camera to take Photos with long shutterspeed value?(more than one minute)

« Last Edit: 03 / June / 2013, 17:08:50 by bombolo88 »

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msl

1280
A720 IS, SX220 HS 1.01a

Re: PowerShot SX220 HS - Porting Thread

« Reply #535 on: 04 / June / 2013, 11:46:10 »

Yes & No

You should know what you're doing. One minute direct sun would be a bad idea.

msl

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bombolo88

4

Re: PowerShot SX220 HS - Porting Thread

« Reply #536 on: 04 / June / 2013, 12:01:27 »

Quote from: msl on 04 / June / 2013, 11:46:10

Yes & No

You should know what you're doing. One minute direct sun would be a bad idea.

msl

Obviously not

:P
But my question is that this camera has a factory value of 15 seconds for maximum shutter speed value,why not 30 seconds?hardware limitation(noise),overheating or something else?

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blackhole

942
A590IS 101b

Re: PowerShot SX220 HS - Porting Thread

« Reply #537 on: 04 / June / 2013, 12:55:37 »

Hardware limitations are one of the main reasons. A lot of megapixels on the sensor size 6x5 millimeters or smaller,always doing a lot of noise. If you look RAW 30 second exposure, you will be clear why Canon limits the exposure to 15 seconds, and why there is no ability to record RAW files.Megapixels are now promotional gimmick.

« Last Edit: 04 / June / 2013, 12:59:46 by blackhole »

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http://astrofoto.pondi.hr

bombolo88

4

Re: PowerShot SX220 HS - Porting Thread

« Reply #538 on: 04 / June / 2013, 13:57:16 »

Thank you very much guys,now i have all clear

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pshotuser

27

Re: PowerShot SX220 HS - Porting Thread

« Reply #539 on: 22 / September / 2013, 07:19:48 »

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

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