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Canon XF Series 4K and HD Camcorders
Canon XF705, XF405, XF305, XF205 and XF105 (with SDI), Canon XF400, XF300, XF200 and XF100 (without SDI).

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Old April 15th, 2012, 04:24 PM   #1
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XF100 Automatic Gain

Hi,

I'm fairly new to the XF100 so I am still getting used to it. Are there any noise benefits to using -6.0dB of gain vs. 0dB?

I ask because I notice that, when set to 'auto' the gain level will not drop itself below 0dB. Is it possible to allow a lower limit below 0dB in the same way that you can set an upper limit on the AGC?

Thanks,

Torsten.
Torsten Dettlaff is offline   Reply With Quote
Old April 15th, 2012, 08:22 PM   #2
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Re: XF100 Automatic Gain

You can use it like an electronic ND filter and it may give a less noisy picture. So yes, when in bright sunlight use it - especially if you want depth of field.
Harry Pallenberg is offline   Reply With Quote
Old April 16th, 2012, 02:24 AM   #3
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Re: XF100 Automatic Gain

On my XF300, I always have AGC set to Off and the default Gain set to -/- 3 dB to have the least amount of noise in normal conditions. I use the ND filter settings to keep the iris to anywhere in the region below (in a numerical sense) f 6.8 for proper DOF and detail.
Harm Millaard is offline   Reply With Quote
Old April 28th, 2012, 09:01 PM   #4
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Re: XF100 Automatic Gain

Quote:
Originally Posted by Torsten Dettlaff View Post
Hi,

I'm fairly new to the XF100 so I am still getting used to it. Are there any noise benefits to using -6.0dB of gain vs. 0dB?

I ask because I notice that, when set to 'auto' the gain level will not drop itself below 0dB. Is it possible to allow a lower limit below 0dB in the same way that you can set an upper limit on the AGC?

Thanks,

Torsten.
In my experience, there is much less noise at -6 db than at 0 db. I have my gain settings at -6, -3, and 0. I always try to shoot at -6.
Bob Prichard is offline   Reply
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