-3db Gain
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DVX100Shooter
Veteran
Re: -3db Gain
I shoot -3db gain on my ENG camera at work. I use a set up card in my camera and that is one of the settings I have it set to. I did a before and after test where I just shot some basic stuff out in the parking lot. The before footage looked dull. The sky was dull blue, the grass was dull, etc. Then I put the set up card in and shot another test and this time the grass was a very vivrant green and the sky was very vivrant blue. It really brought the colors out. Now I will add that my fraternity brother shoots for network. When I was in DC to cover the 9/11 Anniversary 2 years ago, I ran into him and he gave me his "Network Camera" settings from his camera. I just put my card in his camera and recorded his settings onto my card. So I often tell people I have that "Network" look! LOL!
-3db gain is not the only thing that gives me the look that I have. I have other settings switched around as well. Also you would think that shooting at night you would run into problems but nope. I work the nightshift, and I shoot with -3db gain at night all the time. Even if I do need to gain up to 9db gain, it doesn't look bad at all. I try not to gain up at all if I can help it.
I don't think you can go to a negative gain on the DVX line of cameras. I do know you can go to a -3db gain on the Canon XL-1 cameras.
I shoot -3db gain on my ENG camera at work. I use a set up card in my camera and that is one of the settings I have it set to. I did a before and after test where I just shot some basic stuff out in the parking lot. The before footage looked dull. The sky was dull blue, the grass was dull, etc. Then I put the set up card in and shot another test and this time the grass was a very vivrant green and the sky was very vivrant blue. It really brought the colors out. Now I will add that my fraternity brother shoots for network. When I was in DC to cover the 9/11 Anniversary 2 years ago, I ran into him and he gave me his "Network Camera" settings from his camera. I just put my card in his camera and recorded his settings onto my card. So I often tell people I have that "Network" look! LOL!
-3db gain is not the only thing that gives me the look that I have. I have other settings switched around as well. Also you would think that shooting at night you would run into problems but nope. I work the nightshift, and I shoot with -3db gain at night all the time. Even if I do need to gain up to 9db gain, it doesn't look bad at all. I try not to gain up at all if I can help it.
I don't think you can go to a negative gain on the DVX line of cameras. I do know you can go to a -3db gain on the Canon XL-1 cameras.
donbarzini
Well-known member
Re: -3db Gain
Or, -3 is really just 0. I mean couldn't any company call their 0db -3db if they wanted to just like Marshall Amplifiers having their volume go to 11?
Or, -3 is really just 0. I mean couldn't any company call their 0db -3db if they wanted to just like Marshall Amplifiers having their volume go to 11?
donbarzini
Well-known member
Re: -3db Gain
You're right! Makes sense though, Panasonic could have called 0db -3db, I mean how would we know?
You're right! Makes sense though, Panasonic could have called 0db -3db, I mean how would we know?
Mike_Donis
Veteran
Re: -3db Gain
If anyone did find out though - they'd lose a hell of a lot of credibility!
If anyone did find out though - they'd lose a hell of a lot of credibility!
donbarzini
Well-known member
Re: -3db Gain
I would pay an engineer to be able to lower my DVX100a's initial 0db gain to a -3db and would be willing to use more light if it would significantly matter.
I would pay an engineer to be able to lower my DVX100a's initial 0db gain to a -3db and would be willing to use more light if it would significantly matter.
Re: -3db Gain
As long as the iris is not full open at a given shutterspeed for a specific scene, you even wouldn't need more light. If the gain (and the noise!) is being reduced by 3db the only thing that would be necessary is to open up the iris by 1/2 stop in order to get full signal again. DOF will slightly reduce in this case.
As long as the iris is not full open at a given shutterspeed for a specific scene, you even wouldn't need more light. If the gain (and the noise!) is being reduced by 3db the only thing that would be necessary is to open up the iris by 1/2 stop in order to get full signal again. DOF will slightly reduce in this case.
FlacaProductions
Well-known member
Re: -3db Gain
i usually use -3db to shorten depth of field.
i usually use -3db to shorten depth of field.