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rjlittlefield Site Admin

Joined: 01 Aug 2006 Posts: 20165 Location: Richland, Washington State, USA
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Posted: Mon Aug 27, 2012 5:15 pm Post subject: Live View delay through computer = 0.25 seconds |
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I got curious today to see just how much delay gets added by watching a live view image on my computer, versus watching the scene directly.
The answer, in my case, is 0.23-0.25 seconds. This is pretty small, but still big enough that it could be an issue when say shooting live stuff through a microscope.
Here's the setup to take the measurement. The digital watch is for precision; the spinning disk at 1 rps is to cover cases where the digits are hard to read.
The same experiment with analog video and HDMI showed that those were faster, both around 0.12-0.13 seconds.
It's hard to wrap this up into an overall number for equipment delay. I know from other tests (HERE) that Live View introduces some additional and unpredictable delay between trigger and actually taking the picture. And if I wanted to shoot with flash there would be additional delay for dropping out of Live View as required to trigger the flash. Things add up...
--Rik |
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g4lab
Joined: 23 May 2008 Posts: 1434
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Posted: Tue Aug 28, 2012 12:54 pm Post subject: |
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Rik, you are, as always, amazing! |
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rjlittlefield Site Admin

Joined: 01 Aug 2006 Posts: 20165 Location: Richland, Washington State, USA
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Posted: Tue Aug 28, 2012 11:27 pm Post subject: |
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I love this language. I'm thinking that "amazing" here is the polite affectionate form of "obsessive".
What really happens is that I get curious about these technical issues and they nag at me until I know the answer. But then I know my memory isn't very good, so to keep from forgetting I write 'em up and post 'em out. If it contributes to the common cause, so much the better!
--Rik |
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canonian

Joined: 31 Aug 2010 Posts: 890 Location: Rotterdam, Netherlands
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Posted: Wed Aug 29, 2012 1:49 am Post subject: |
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I like your investigative mind, Rik, be it obsessive or not. _________________ Fred
Canonian@Flickr |
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g4lab
Joined: 23 May 2008 Posts: 1434
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Posted: Wed Aug 29, 2012 7:20 am Post subject: |
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Amen! |
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DQE

Joined: 08 Jul 2008 Posts: 1653 Location: near Portland, Maine, USA
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Posted: Thu Aug 30, 2012 6:21 pm Post subject: |
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I wonder what is causing the delay? Is it certain that the camera is causing all of it? Would a faster PC and/or video card and/or video input/output interface subsystem(s) make any difference? _________________ -Phil
"Diffraction never sleeps" |
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