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zoom during exposure on sx100 IS

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Offline hotvedt

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Re: zoom during exposure on sx100 IS
« Reply #10 on: 01 / November / 2008, 05:20:19 »
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One thing that comes to mind: When i start the script, it takes the picture with zoom and all, then it just shows me the picture i took, until i again presses the shutter-button.

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Offline Hacki

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Re: zoom during exposure on sx100 IS
« Reply #11 on: 01 / November / 2008, 05:52:02 »
Quote
@Hacki : i have SX100 1.00c too with latest chkdk. i tried both M and Tv and same result : after 10 secs the display turns black, all the leds are turned off and the lens are still out (not retracting). i have to swich on/off to restart the camera. did you made some modifications?

I did not change the script, but i use a slimmed down version of chdk. Threw out the curves, games, and some other stuff. But i dont think its related. Maybe yis has something to do with your configuration?

Anyways, the SX100 does not have an ultrasonic motor.

@hotvedt :

Could be because you're still in ALT mode when the script is done. Try to press the alt button, everything should continue to work normally then.

Re: zoom during exposure on sx100 IS
« Reply #12 on: 01 / November / 2008, 06:42:10 »
Worked great here, just tested it. Thanks!

Does it have to start at maximum zoom out? And can a user choice be put in to set the zoom speed? One of those "script parameter" things. Mine zooms so fast that the frame is a full blur in 1 second exposures. I can control how much zoom-blur is in the image by using shorter shutter speeds like .5 seconds or shorter.

Though I noticed that my camera will go wonky if I don't start out at full wide-angle first. That might be a problem others are having.

I wouldn't agree that this is "useless". It's a popular method from the manual-SLR days to add compositional focus to your subjects. Then everything went digital where this wasn't possible to do anymore. You'd trip the shutter then manually zoom your manual lens to get the effect. Some photo editors today, good ones, also include a filter to fake this effect. When done right, not overdone, with the right subject it can make for an interesting photo.

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Offline PhyrePhoX

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Re: zoom during exposure on sx100 IS
« Reply #13 on: 01 / November / 2008, 06:54:07 »
Btw this already is in the bugtracker, so that ond day you cannot only use that in scripts, but via means of the zoomoverride. Btw this effect is called timeshifting, often used in conjunction with rear curtain flash, wich gives you a kind of random,blurry background while having the subject crisp and sharp.


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Offline fudgey

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Re: zoom during exposure on sx100 IS
« Reply #14 on: 01 / November / 2008, 09:34:58 »
I also got those horizontal lines, but only when I pointed the camera at a bright light source causing overexposure.

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Offline madcat

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Re: zoom during exposure on sx100 IS
« Reply #15 on: 01 / November / 2008, 10:33:43 »
Great script! Checked on ixus860. No interlacing, but still need to try with overexp.

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Offline madcat

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Re: zoom during exposure on sx100 IS
« Reply #16 on: 01 / November / 2008, 10:55:27 »
Yeah!  :xmas

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Offline PhyrePhoX

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Re: zoom during exposure on sx100 IS
« Reply #17 on: 01 / November / 2008, 13:57:45 »
nice examples.
now try with flash :D

like already written in the thread, this effect normally is achieved in slrs/dslrs by manually zooming while exposing.
by the way can you also test a FOCUS shift during ONE exposure!? though this happens quiete fast (the focus changing), but also can lead to beautiful images. dont have a cam on me right now, nor do i have the time.
also a technique in the same playground: tilting your camera in the moment you press the shutter (in conjunction with flash) or pushing/dragging your camera towards the subject. this *might* be implemented in the future, for example when we include dataghosts IS-correction during exposure.


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Offline a710is

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Re: zoom during exposure on sx100 IS
« Reply #18 on: 01 / November / 2008, 15:00:32 »
the script doesn't work on A710. ewavr I think posted a similar pic but no script, us digic 2 users would appreciate the script  :)
« Last Edit: 01 / November / 2008, 15:05:47 by a710is »

Re: zoom during exposure on sx100 IS
« Reply #19 on: 01 / November / 2008, 15:13:13 »
still not working for me.  is the  same like when i tried Timebandit for time lapse movie. now i saw that Timebandit script is obsolete but i cant figure why this one is not working   :'(
Powershot SX 100 IS

 

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