# Timing of Shutter opening

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### #1 Kenneth Kragh Jensen

Kenneth Kragh Jensen

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Posted 21 December 2007 - 05:33 PM

Dear Forum,

In a research project where timing is important I need to know what the standard timing of shutter openings is in relation to the frame duration:

If I record at, for instance, 10 fps, then each frame has a duration of 1/6 seconds or or 166.7 ms. If record with a shutter speed of say 1/100 the duration of the shutter opening is 10 ms. The question is then: does the shutter open at time 0 to 10 ms in a frame or for instance in the middle of the frame duration, i.e from time 78.3 ms to time 88.3 ms?

Does anyone have the answer to this or can guide me to a info source?

Thank you,

Best Regards,
Kenneth
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### #2 Stephen Williams

Stephen Williams
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Posted 21 December 2007 - 06:17 PM

Dear Forum,

In a research project where timing is important I need to know what the standard timing of shutter openings is in relation to the frame duration:

If I record at, for instance, 10 fps, then each frame has a duration of 1/6 seconds or or 166.7 ms. If record with a shutter speed of say 1/100 the duration of the shutter opening is 10 ms. The question is then: does the shutter open at time 0 to 10 ms in a frame or for instance in the middle of the frame duration, i.e from time 78.3 ms to time 88.3 ms?

Does anyone have the answer to this or can guide me to a info source?

Thank you,

Best Regards,
Kenneth

Hi,

If a film camera has a 180 degree shutter at 10 fps the shutter speed is 1/20th. The shutter is open when the film is stationery.

Stephen
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### #3 Kenneth Kragh Jensen

Kenneth Kragh Jensen

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Posted 22 December 2007 - 09:15 AM

Hi,

If a film camera has a 180 degree shutter at 10 fps the shutter speed is 1/20th. The shutter is open when the film is stationery.