I am getting a little grain even with 0 decibles of gain. is that normal? its not too bad, but i can see it in dark areas. like blue/red/speckles.
Grain
- Thread starter TimurCivan
- Start date
enterdcable
Well-known member
Re: Grain
When the scene is underexposed right?
When the scene is underexposed right?
enterdcable
Well-known member
Re: Grain
Or else you might be holding your breath for too long.
Or else you might be holding your breath for too long.
Bill_Hooper
Active member
Re: Grain
Policar,
<Normal, especially with cine_gamma_d, the cinelike matrix, and 5600K white balance>
Are you serious? All of those create noise? Even the white balance? Man this sucks. What do you do? Just normal gamma, normal matrix and color correct in post?
Bill
Policar,
<Normal, especially with cine_gamma_d, the cinelike matrix, and 5600K white balance>
Are you serious? All of those create noise? Even the white balance? Man this sucks. What do you do? Just normal gamma, normal matrix and color correct in post?
Bill
Re: Grain
Yeah, they all create some noise. Nothing too serious, and a little noise can add a nice organic feel to the picture. A lot of noise can ruin a greenscreen shoot or muddy an otherwise nice picture, though.
The best fix is to avoid cine_gamma_d (except when you need it) in favor of cine_gamma or another gamma setting. I usually use the normal matrix and +2 chroma then color correct in post but it really looks fine like this without CC.
The 5600k white balance problem can be fixed by using an 85b filter and shooting with the 3200K white balance setting.
None of these problems are too huge, though. The fewer settings you mess with, the cleaner your picture will be, and a clean picture can be manipulated in post to look however you want.
Yeah, they all create some noise. Nothing too serious, and a little noise can add a nice organic feel to the picture. A lot of noise can ruin a greenscreen shoot or muddy an otherwise nice picture, though.
The best fix is to avoid cine_gamma_d (except when you need it) in favor of cine_gamma or another gamma setting. I usually use the normal matrix and +2 chroma then color correct in post but it really looks fine like this without CC.
The 5600k white balance problem can be fixed by using an 85b filter and shooting with the 3200K white balance setting.
None of these problems are too huge, though. The fewer settings you mess with, the cleaner your picture will be, and a clean picture can be manipulated in post to look however you want.
Bill_Hooper
Active member
Re: Grain
Policar
Thanks for the explanation.
<The 5600k white balance problem can be fixed by using an 85b filter and shooting with the 3200K white balance setting.>
Do you do this instead of white balancing to a white card? Seems like it would be kind of a pain in the ass with a filter and also would knock off some light.
Bill
Policar
Thanks for the explanation.
<The 5600k white balance problem can be fixed by using an 85b filter and shooting with the 3200K white balance setting.>
Do you do this instead of white balancing to a white card? Seems like it would be kind of a pain in the ass with a filter and also would knock off some light.
Bill
scharky
Veteran
Re: Grain
[quote author=Policar link=board=Events;num=1100840633;start=0#9 date=11/19/04 at 15:42:34]Yeah, it probably would be a pain. I don't bother...the noise has never bothered me enough but if you're having big noise troubles it's worth a try. Or you could shoot in 3200K then color correct in post. Though that might lead to some interesting results.[/quote]
That would not be a good idea, unless you want a blue color outside. Since the image is being compressed it would require a lot of color correction to get it back to how it should look, and that would end up in really really ugly footage.
I have been using an 85b filter for outdoor shoots for a while now, and have to say that I am very impressed. If you want a different white balance or look, slap on the 85b and then white balance while using the filter, or white balance and then adjust the color temp.
[quote author=Policar link=board=Events;num=1100840633;start=0#9 date=11/19/04 at 15:42:34]Yeah, it probably would be a pain. I don't bother...the noise has never bothered me enough but if you're having big noise troubles it's worth a try. Or you could shoot in 3200K then color correct in post. Though that might lead to some interesting results.[/quote]
That would not be a good idea, unless you want a blue color outside. Since the image is being compressed it would require a lot of color correction to get it back to how it should look, and that would end up in really really ugly footage.
I have been using an 85b filter for outdoor shoots for a while now, and have to say that I am very impressed. If you want a different white balance or look, slap on the 85b and then white balance while using the filter, or white balance and then adjust the color temp.
Re: Grain
"Though that might lead to some interesting results."
It really wouldn't look as bad as you explain, but notice I didn't recommend it and just mentioned it as an option, but yeah....it's all about the 85B filter if noise really bothers you. Really it would just take a hue shift or some levels adjustment.
"Though that might lead to some interesting results."
It really wouldn't look as bad as you explain, but notice I didn't recommend it and just mentioned it as an option, but yeah....it's all about the 85B filter if noise really bothers you. Really it would just take a hue shift or some levels adjustment.
Bill_Hooper
Active member
Re: Grain
<I have been using an 85b filter for outdoor shoots for a while now, and have to say that I am very impressed. If you want a different white balance or look, slap on the 85b and then white balance while using the filter, or white balance and then adjust the color temp>
So you guys are saying that even if you use the A white balance position on the DVX (not 3200K or 5600K preset) and white balance with a white card and you're shooting outside, some noise will be added (without using the 85B filter)? This seems weird to me. If this is the case, then wouldn't there be an equal amount of noise indoors and outdoors (again, using the A white balance position and white balancing manually)???
Trying to figure this out. My last project was pretty friggin noisy and I really want to cut back next time, especially since I output to DVD, which also seems to add noise.
Thanks
bill
<I have been using an 85b filter for outdoor shoots for a while now, and have to say that I am very impressed. If you want a different white balance or look, slap on the 85b and then white balance while using the filter, or white balance and then adjust the color temp>
So you guys are saying that even if you use the A white balance position on the DVX (not 3200K or 5600K preset) and white balance with a white card and you're shooting outside, some noise will be added (without using the 85B filter)? This seems weird to me. If this is the case, then wouldn't there be an equal amount of noise indoors and outdoors (again, using the A white balance position and white balancing manually)???
Trying to figure this out. My last project was pretty friggin noisy and I really want to cut back next time, especially since I output to DVD, which also seems to add noise.
Thanks
bill
Re: Grain
Yeah, the white balance option boosts different colors, effectively adding gain to selected hues. White balance to a bright red object then notice how grainy the footage looks (it should also look entirely blue.)
If you're careful you can get virtually grain free footage from the dvx. Often with whatever white balance you want depending on the colors in the scene, as long as you're careful about what other settings you use.
Yeah, the white balance option boosts different colors, effectively adding gain to selected hues. White balance to a bright red object then notice how grainy the footage looks (it should also look entirely blue.)
If you're careful you can get virtually grain free footage from the dvx. Often with whatever white balance you want depending on the colors in the scene, as long as you're careful about what other settings you use.
donbarzini
Well-known member
Re: Grain
Policar,
So are you basically saying not to manual white balance at all? Leave the camera on the 3200 WB preset at all times, indoor and outdoor, and just use an 85 outside?
Policar,
So are you basically saying not to manual white balance at all? Leave the camera on the 3200 WB preset at all times, indoor and outdoor, and just use an 85 outside?