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Old 09-10-2012, 05:52 PM
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pluto (Hugh)
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Join Date: Dec 2011
Location: Sydney
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Quote:
Originally Posted by Danack View Post
That's weird. The camera's exposure should be pretty much the same - having the ISO change shouldn't make the background flicker, it would only make the picture have slightly more/less noise.

...

I don't believe that is necessary. The white balance shouldn't be changing that much between frames, but can change dramatically over a sequence of shots (e.g. http://www.youtube.com/watch?v=YLh8pag7DH4 ) and so need to be left to auto-white balance.
The flicker from auto ISO would be because the ISO is changing in relatively large increments, like 200 to 320 (maybe you can choose smaller increments depending on the camera) so if aperture and exposure are locked off then there will be a noticeable jump in brightness.

I only mentioned the white balance thing because I have seen it on timelapses I have done where everything (exposure time, aperature and ISO speed) is locked off and I have forgotten to set a manual white balance. A couple of times I have remembered mid shooting and set the white balance and seen afterwards that the flickering stopped at the point I set the WB.

Poita: I'm a 3D/VFX artist at a company called Collider in Sydney.
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