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-   -   Gain and preset gain (https://www.dvinfo.net/forum/canon-xh-series-hdv-camcorders/125142-gain-preset-gain.html)

John Cambell July 1st, 2008 06:31 PM

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?

Oren Arieli July 1st, 2008 11:48 PM

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.

Russ Motyko July 1st, 2008 11:48 PM

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.

Bill Pryor July 2nd, 2008 09:03 AM

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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