Importance of Black Balance after powering down

D

Denwa

Well-known member
I have noticed that you truly do need to black balance every time you power on the camera. I find noisier blacks every time I power back on (unless from standby mode).

Anyone else notice this?

If you close the iris and look at the waveform the thin line at the low end of the IRE scale looks noisey till you ABB.

Not saying this a "problem" it's good practice to follow anyway.
 
What do you point at when you ABB? Should you shoot at anything particular? Obviously when I white balance I point at something white. Should I shoot something black when I ABB or do you set it in the enviornment you are in?
 
abeas said:
What do you point at when you ABB? Should you shoot at anything particular? Obviously when I white balance I point at something white. Should I shoot something black when I ABB or do you set it in the environment you are in?
Click to expand...

Neither. When you ABB, it will close the iris completely and black balance off of that, so it doesn't matter what you point the camera at.
 
I have an hvx and black balance every day I use it, not always everytime it's turned on but always the morning of the day I'll be shootng with it.
 
I've never specifically set the blacks on any camera, since I white balance at least once in each scene, and the camera automatically does it after. It's good practice to do that regularly anyway, in each direction.
 
I do not black balance every time I turn the camera back on if I am in the same lighting conditions. The manual says that you should only have to do it when you haven't used the camera for a while.
 
Close your iris. Turn on you WFM. Look at the line. ABB. Look at it again. Unless it's just my camera.
 
It's not just yours. On my 170 it made no difference, but there was a minor difference on my 40 and 150.

Black balancing takes literally two seconds, and it does help clean up noise in the blacks.
 
Cassius said:
I've never specifically set the blacks on any camera, since I white balance at least once in each scene, and the camera automatically does it after. It's good practice to do that regularly anyway, in each direction.
Click to expand...

The camera does NOT automatically do an ABB after an AWB. You have to do the ABB yourself.
 
pg 40.
press and hold the AWB button.
great, so i've been black balancing this whole time!
i thought i had to hold down the AWB button to WB, seems you just press it once.
 
Yeah no worries, I made that same mistake for a while, too. Some other camera's I've used had to go to black before white balancing so I assumed it was part of the WB ritual.
 
So I was wondering... how often do you do an ABB? Everytime you turn on and off the camera as you move to different places?

Do you guys think it's absolutely compulsory to do ABB as much as AWB or just when the condition is dark?
 
ABB resets the computers brain to what Black is. It can be noisy otherwise. On this camera, from personnel experience, I would ABB every time you power on the camera. Panasonic also recommends ABB after changing record modes (1080 to 720 etc etc).
 
You must log in or register to reply here.
Back
Top