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April 8th, 2008, 10:16 AM
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#1 |
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Major Player
Join Date: Sep 2007
Location: Palm Desert, California
Posts: 311
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Pulsating Zooms
I'm shooting 1920x1080x24p with a 1/48th shutter. On all my zooms (done at moderated speed in bright light) I am getting a "pulsating" effect. Why is this and what is the cure? The zoom speed is smooth and consistent it is the light intensity that pulsates.
Should I be using a faster shutter for pans and zooms? |
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April 8th, 2008, 11:00 AM
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#2 |
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Major Player
Join Date: Dec 2005
Location: Kelkheim, Germany
Posts: 375
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Do you notice only a pulsating of brightness - or of focus as well?
Does this ocuur only in progressive mode and when auto focus is switched on?
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Michael |
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April 8th, 2008, 12:10 PM
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#3 |
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Trustee
Join Date: Sep 2005
Location: Gilbert, AZ
Posts: 1,896
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Michael, could you post a small video example?
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April 8th, 2008, 12:18 PM
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#4 |
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Major Player
Join Date: Dec 2005
Location: Kelkheim, Germany
Posts: 375
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Steven, I don't own a EX1 yet.
But the Canon A1 shows focus pulsing when zooming with AF switched on, especially in progressive mode.
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Michael |
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April 8th, 2008, 12:44 PM
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#5 |
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Trustee
Join Date: Sep 2005
Location: Gilbert, AZ
Posts: 1,896
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Mike, that question was to the original Mike who posted the issue. ;)
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April 8th, 2008, 01:25 PM
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#6 |
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Major Player
Join Date: Dec 2005
Location: Kelkheim, Germany
Posts: 375
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Oops, sorry.
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Michael |
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April 8th, 2008, 07:34 PM
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#7 | |
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Major Player
Join Date: Sep 2007
Location: Palm Desert, California
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Quote:
With a closer look it is A) A lateral fast shaking - back and forth. No change in brightness or focus B) It only happens at the left and right 1/3rd of the image. The center third is still and normal. As I described the problem wrong originally let me start a new thread and forget this one. Last edited by Michael H. Stevens; April 8th, 2008 at 09:54 PM. |
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