KNEE issue?

t-h-e-w-h-o

t-h-e-w-h-o

Well-known member
So today i was messing around with scene files and ready barry's dvx book and being a begginer with my dvx it appears i have finally found the thing that pisses me off to utter enragement. I think it is the KNEE setting. I was setting scene file 5 (cineswitch5) and i wanted to change the KNEE settings because quite frankly i dont like auto... However, it was in blue text and appeared to be locked. Also, perhaps its not the KNEE that i need to change, but rather whatever is causing this drastic change in the example footage im providing below. Watch closely as the cam pans from "kerns guava" soda to the other object. The other object seems to have a sudden spurse of light as the camera *appears* to "correct" it automatically. My goal of this thread is to figure out a way to either A. Turn that feature off (i would like to do all light balancing etc manually) or, B. scale it down.

Thanks in advance, the sample file is below in VCD.MPG format.

http://www.getsdrunk.com/temp/kneeshot.mpg
 
That looks like auto iris to me too.

Other auto things to look for would be white balance, and of course the knee, although the knee wouldn't cause what you're seeing here. The auto knee could cause some flickering in bright highlights, but wouldn't likely affect the darker colors like your footage shows.

In cinegamma the knee is blue'd out because it's not adjustable, and it's not auto. If you're in cinegamma mode you don't have to worry about the knee being in auto because it isn't, it's fixed as part of the gamma curve itself.
 
Barry_Green said:
The auto knee could cause some flickering in bright highlights
Click to expand...


Hey you know sometimes, i get this weird, highlight flicker, especially in over exposed sky when its in the trees. it jsut suddenly blooms and un blooms really quickly. could that be the cause, the DSP is trying to descied on what ot do?
 
Perhaps im not turning off the auto white balance in the right place, im doing it in the menu where it says atw?
 
Make sure you're not in "auto" mode, for one thing.

Second, go into the SW MODE menu and see whether ATW is assigned to one of the white balance switch positions; if it is, don't use that switch position.

Third, look at the user buttons and see if ATW is assigned anywhere; if it is, be sure not to use one of those buttons.

It's easiest to just put the white balance switch in PRST, and use a fixed 3.2k or 5.6k preset. If you do, you'll know that ATW isn't active and you shouldn't see any color flickering going on.
 
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