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CHDK for SX120

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Offline stargeezer

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Re: CHDK for SX120
« Reply #410 on: 07 / September / 2010, 20:42:06 »
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I won't say it is bug free, but I will say that I have been using it for about 3 months and I am thrilled with it, and have no issues that I did not cause.  I would suggest giving it a try, it is not like you are risking your camera, it is just a few files on the flash card.  I hope you enjoy it as much as I do!!!

Quote from: pwag on 07 / September / 2010, 01:13:06
I know this is still in beta, I've been lurking and sorta following along and I appreciate your guys' stellar work and time you've sacrificed into this project.

Is this "mostly" ready to install? and what works and what doesn't? There's not really a list on the page. (Maybe I missed a bunch of somethings.

Thanks!
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Offline pioto

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Re: CHDK for SX120
« Reply #411 on: 09 / September / 2010, 19:14:57 »
Hi,

I'm a bit late to the game, and searching back through 28 forum pages is a bit daunting... would someone mind summarizing where to grab current builds of this on the wiki?
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Offline stargeezer

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Re: CHDK for SX120
« Reply #412 on: 10 / September / 2010, 01:33:10 »
Quote from: pioto on 09 / September / 2010, 19:14:57
I'm a bit late to the game, and searching back through 28 forum pages is a bit daunting... would someone mind summarizing where to grab current builds of this on the wiki?

Try the following link:

http://chdk.setepontos.com/index.php/topic,5026.0.html
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Offline azezal

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Re: CHDK for SX120
« Reply #413 on: 12 / September / 2010, 04:58:48 »
Quote from: fe50 on 07 / September / 2010, 01:01:37
Hello & welcome, azezal !

Quote from: azezal on 06 / September / 2010, 18:10:08
Guys was trying out a motion detection script (to capture lightening strikes) on my Canon sx120, used the one on wiki but its really slow, the camera still does some kind of metering before clicking the pic...I tried changing the settings of the script too but did not help ....any suggestions as to where I can find a working script?
I suggest using fudgey's Fast MD with burst/preview script, read also here...

thanks ..will give this one a try.....have been using CHDK for quite some time now....amazing stuff ...thanks guys....
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Offline redlinegts85

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Re: CHDK for SX120
« Reply #414 on: 13 / September / 2010, 20:44:34 »
Well I got CHDK loaded successfully, but I have no idea how to use it.  I mainly want to make my shutter times longer (more than 15 seconds), but it still only goes to 15 seconds max.

I downloaded the attachment from the 3rd post here:  http://chdk.setepontos.com/index.php/topic,5026.0.html

Then I used cardtricks.  There are so many options in the menu that I have no idea where to start using this.
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Offline redlinegts85

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Re: CHDK for SX120
« Reply #415 on: 14 / September / 2010, 15:11:40 »
So I mainly got CHDK for the longer shutter speeds, but I noticed my LCD stays lit during taking this picture now, which causes a blue light on the right side of my pictures when taking pictures at night with long shutter speeds.  My LCD would always shut off during the picture on the stock 15sec shutter speed.  Any ideas?
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Offline stargeezer

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Re: CHDK for SX120
« Reply #416 on: 14 / September / 2010, 18:47:08 »
The LCD does not appear to be the source of the problem.  I too use CHDK for long exposures.  If you use the supplied AV cable, the LCD is turned off, but the sensor still has light issues.  I have blue light on both sides of the image, worse at the top.  I crop my photos so this is really not a problem.  I do use the internal dark frame subtraction rather than a dark frame library as that does reduce the error signal the best.
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Offline fe50

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Re: CHDK for SX120
« Reply #417 on: 15 / September / 2010, 00:55:42 »
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Offline redlinegts85

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Re: CHDK for SX120
« Reply #418 on: 15 / September / 2010, 01:34:42 »
I also thought it was amp glow at first, but if I use the CHDK settings and turn the speed down to less than 15 seconds, I still get the blue lights.  If I use the stock 15 seconds and turn off CHDK shutter speed, the picture is perfectly fine.

Seems like something in CDHK is messing up.  I'm new to this, so I may be wrong.
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Offline fe50

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Re: CHDK for SX120
« Reply #419 on: 15 / September / 2010, 02:48:33 »
Quote from: redlinegts85 on 15 / September / 2010, 01:34:42
I also thought it was amp glow at first, but if I use the CHDK settings and turn the speed down to less than 15 seconds, I still get the blue lights.  If I use the stock 15 seconds and turn off CHDK shutter speed, the picture is perfectly fine.
What setting for "Darkframe subtraction" did you use ?
The Canon firmware, without CHDK, does DF subtraction on exposures from ~1 or 1.3 seconds.

--> http://chdk.wikia.com/wiki/CHDK_User_Manual#Dark_Frame_Subtraction
--> http://chdk.wikia.com/wiki/CHDK_firmware_usage#RAW_parameters_menu

With CHDK DF subtraction set to "Auto" you should get the same results as without CHDK...
While taking the darkframe (with or without CHDK), the camera shows "Busy"; DFS doubles the total image capturing time.

Does the DF subtraction setting change the behaviour ?
This feature may be broken in the SX120 port...


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