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July 1st, 2008, 06:31 PM
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#1 |
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Regular Crew
Join Date: May 2008
Location: Haiku Hawaii
Posts: 83
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Gain and preset gain
On the A1 there gain setting everyone says to keep it down on 0 or -3 because gain produces grain in the footage. In the custom presets there is color gains such as red green blue ect. My question is that does boosting the color gains in the custom presets also produce grain just like the main gain control?
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July 1st, 2008, 11:48 PM
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#2 |
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Major Player
Join Date: May 2007
Location: San Jose, California
Posts: 919
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Not that I'm aware of. What you are doing with the external gain switches is adding a bit of light to the sensor, which increases its sensitivity (at the expense of added noise). The color gain does not 'flash' the sensor, its an algorithm adjustment.
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July 1st, 2008, 11:48 PM
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#3 |
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Regular Crew
Join Date: Oct 2007
Location: Portland, OR
Posts: 56
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From what I've seen, no it does not. +30 R isn't the same as +6db gain. At least not in the way of visible noise.
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July 2nd, 2008, 09:03 AM
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#4 |
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Contributor
Join Date: Jan 2003
Location: Kansas City, MO
Posts: 4,449
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That's right. If you crank up the red, you get a redder image. You crank up the gain, it's like shooting with faster film--more exposure but a grainier image.
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