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Sony HVR-A1 and HDR-HC Series
Sony's latest single-CMOS additions to their HDV camcorder line.


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Old August 23rd, 2006, 01:21 PM   #1
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How much noise is acceptable?

O db is ideal, but just how noisy is the A1 at -3db and -6db? The A1 is not a great low light camera compared to sony's z1 or pd series cameras.
Z-1 looks very clean at -3db and -6db.
There are times when I just have to kick up the gain a little, but I haven't thoroughly tested/viewed the A1 gain scenario yet.

thanks,
chris
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Old August 23rd, 2006, 07:23 PM   #2
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When I shoot weddings with it in HD, I wouldnt go over 3db of gain. When I downconvert to DV, I will take it up to 6 or 9 depending on my needs. Needless to say, when it gets dark, I use the Z1.
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Old August 24th, 2006, 02:00 AM   #3
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You can go up to 9dB, when you convert later to DV?
That would be good.
Can you post some screenshot with this setting?
thx
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Old August 24th, 2006, 06:34 PM   #4
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+9 db is the max I would ever go. At +12 db it also starts to blur a lot.
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Old August 25th, 2006, 12:36 AM   #5
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With Canon GL-2 i go up to 6db.
12 is too noisy for me.
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Old August 26th, 2006, 02:36 AM   #6
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Gain adjust

Sorry for little off topic.... where do you go on the A1u to adjust the gain?
If adjusting gain by the exposure manual - or + how do you know what dB you are at without play back what you just shot indicate in camera data.


Thanks
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Old August 26th, 2006, 02:50 AM   #7
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Someone can confirm that Sony HC1/A1 is better in lowlight than the old D8 models, like DCR-TRV-120E, etc. (this model has 1/4" ccd chip instead of today D8 1/6).

So i hope that hc1 lowlight performance is between D8 and GL2.
If yes, i buy one :)
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Old August 26th, 2006, 02:05 PM   #8
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Quote:
Originally Posted by Saul Kongvongsay
Sorry for little off topic.... where do you go on the A1u to adjust the gain?
If adjusting gain by the exposure manual - or + how do you know what dB you are at without play back what you just shot indicate in camera data.
Exposure lever full right = +18 db gain.

Every stop to the left reduces gain by 3. So six stops left equals to 0 gain. After that the camera starts to close the iris.
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Old August 26th, 2006, 02:26 PM   #9
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Quote:
Originally Posted by Mikko Lopponen
Exposure lever full right = +18 db gain.

Every stop to the left reduces gain by 3. So six stops left equals to 0 gain. After that the camera starts to close the iris.

Thanks Mikko.
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