Noise Issues

K

Killawa

Active member
Heres a picture of me eating a banana with sunglasses on. Enticing?
[URL=http://img514.imageshack.us/my.php?image=picture1jl4.png][/URL]
Shot at 2007-08-07


I was just messing around with my camera last night and i have been noticing lately that i get alot of noise in my image. Example above. I am on a dvx100b and on scene 6. Which is 24pA setting. Any help would be greatly appreciated. my Iris was fully open and gain was at L. Shutter at 1/48. There was just one clamp light on. Im not sure if thats the problem. Any advice would be delicious. Like the banana.
 
The DVX is noisy in the low light.
I have a love hate relationship with bananas (grew up on a banana farm), look through the forums there is lots of advice about it. Light is the way to go.
k
 
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1) That picture is blown up so it will reveal more noise then under normal viewing conditions.

2) You have no light in that shot. I am actually quite impressed the DVX pulled that much out of what looks to be only your computer monitor lighting the room.

Get some light in there and watch the grain disappear.
 
theres also NO light in there. if a DVX100, a 640 ASA camera is having toublereaching what looks like 30 ire on the brightest parts, that just means more lighting than a laptop screen is neccesary.

The DVX DSP, needs a good contrast to render a clean image.
 
Forgive my n00biness as I'm facing a similar problem.

If the DVX is noisy in low light, then to film a dark scene would it be better to film the scene well lit and reduce the light in post?
 
You would need to light the scene adequately. Make sure you have shadows etc., Play with your scene files, etc. Then close your iris some to get an approximation of the look you are going for. Then, yes you do the work in post to bring down the brightness if need be.

Better to start with too much than not enough. But, it comes down to lighting. If you light the scene washed out, then it's going to be difficult to make it appear darker in post. If you light it with good contrast between highlights here and there, and good crushed blacks, etc. You can really go a long way in post.

Can't make hair longer if you cut it too short, but you can make it shorter if it's too long

Jason
 
Killawa,

I agree with those above-- more light! You can tweak it in camera too. I've had good results by changing the shutter degree from 1/48 to 1/36. It adds light without creating a lot of smear. Also, 60i seems to be better than 24pA in low light.

Billz,

Yes, thats the way to go. It's all about contrast.
 
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