EX1 and Auto White Balance at DVinfo.net

Go Back   DV Info Net > Sony XAVC / XDCAM / NXCAM / AVCHD / HDV / DV Camera Systems > Sony XDCAM EX Pro Handhelds

Sony XDCAM EX Pro Handhelds
Sony PMW-300, PXW-X200, PXW-X180 (back to EX3 & EX1) recording to SxS flash memory.


Reply
 
Thread Tools Search this Thread
Old March 11th, 2008, 09:05 PM   #1
Regular Crew
 
Join Date: Mar 2008
Location: Tustin California
Posts: 33
EX1 and Auto White Balance

Since nobody brought this up it may be that my camera has a problem, although it just came from Sony service last week - I sent it out to repair a day after arriving brand new from BH - but it is still not doing a right auto white balance when in Full Auto or ATW unless I press the White Balance button. It behaves worst with interior lighting.
ex. with the camera in Full Auto;
-I am zooming on the window - ATW goes to 5700k
-I will pointing it back inside - ATW stays at 5700k with a red image although I have white objects and white door in view.
-I push the White Balance button - ATW goes to 2100k(good wb).

Why is that even in Full Auto mode, still does and accepts manual white balancing? I have two JVC's GY-DV500, and when in Full Auto, they do not accept manual white balance or any other manual adjustment.

Does anybody else have this problem, or should I send it back and fight Sony for a replacement?

Thank you,
Mike
Mike Mona is offline   Reply With Quote
Old March 12th, 2008, 05:54 AM   #2
Trustee
 
Join Date: Nov 2007
Location: Bristol UK
Posts: 1,271
How long are you waiting for white balance to change,there's an adjustment for the amount of time it takes for white balance to change,ie quick or slow.

Paul.
__________________
Round 2
Panasonic HC-X1, Vinten PB, Sennheiser G3 bits. Vegas pro 14 on i7,AMD Radeon RX480 8GB.
Paul Kellett is offline   Reply With Quote
Old March 12th, 2008, 11:27 AM   #3
Regular Crew
 
Join Date: Mar 2008
Location: Tustin California
Posts: 33
I set the delay for ATW to 1 sec from the default 3 sec. So it should be quik. Instead is sluggish and slow and even when is doing some ATW it takes at least 2-4 sec to start changing color temperature.

What I want to hear if other owners of EX1 has this problem or not? Or is everybody using manual WB only?

Thank you,
Mike
Mike Mona is offline   Reply With Quote
Old March 12th, 2008, 02:17 PM   #4
Major Player
 
Join Date: Sep 2007
Location: Palm Desert, California
Posts: 311
No such problem here and I am suspecting that the bright light from the window burnt an image into the sensor. What if you wait a good long time or switch camera off, does it then read correctly? Or maybe the room is too dark for it to read at all?

Try it outside swinging around in moderate light.
Michael H. Stevens is offline   Reply With Quote
Old March 12th, 2008, 03:05 PM   #5
Inner Circle
 
Join Date: Oct 2001
Location: Honolulu, HI
Posts: 2,053
I would stay away from auto white balance and, instead, set the white balance according to where the bulk of the shot would be.

If it's indoors, then set the white balance there and let the scene out the window go to wherever it may fall.

Two ways to fix the difference: One way is to apply color correction gel to the window to match the interior.

Another way is to do the correction in post: select just the window via a mask, then apply the appropriate adjustments.
__________________
Dean Sensui
Exec Producer, Hawaii Goes Fishing
Dean Sensui is offline   Reply With Quote
Old March 12th, 2008, 07:37 PM   #6
Regular Crew
 
Join Date: Mar 2008
Location: Tustin California
Posts: 33
Dean,
I really appreciate your willingness to help, but my concern is; do I have a defective brand new camera or not?
Is this behavior a bug that would be fixed with a future release of a firmware, or is a hardware defect and I should have the camera replaced?
I am not an auto white balance fan, but again, I can't use it knowing that it has a problem.

thank you,
Mike
Mike Mona is offline   Reply With Quote
Old March 12th, 2008, 09:38 PM   #7
Major Player
 
Join Date: Dec 2006
Location: Melbourne Australia
Posts: 276
Mike,

Have you tweaked the shockless white setting?

That'll make it react quicker, but I've found it to be slow when doing run and gun!

Vaughan
Vaughan Wood is offline   Reply With Quote
Old March 12th, 2008, 10:06 PM   #8
Major Player
 
Join Date: Sep 2007
Location: Palm Desert, California
Posts: 311
Mike: It does not matter whether you use AWB or not, because if AWB is messed up, as it seems to be, then manual WB is likely problematic as well. You MUST talk to a SONY service guy and get the camera looked at or exchanged.
Michael H. Stevens is offline   Reply With Quote
Old April 11th, 2008, 05:18 AM   #9
New Boot
 
Join Date: Mar 2008
Location: Johannesburg, South Africa
Posts: 6
Mike, I have the same problem.

ATW is slow, sometimes doesn't react at all, sometimes gives me different readings on same lighting conditions. Example: ATW correctly identifies my white wardrobe on 4000K. But then when switching through PRST (3200K) and Memory A (set to 4500K) and back to ATW it gives me reading of 5100K and then it takes several minutes for it to find the correct reading again.

According to the manual the ATW speed should be set to 5 to be as fast as possible.

So, is it only Mike and me that have this problem. Bought my camera yesterday.
Fredrik Sperling is offline   Reply With Quote
Old April 11th, 2008, 05:45 AM   #10
Major Player
 
Join Date: Dec 2007
Location: Hertfordshire UK
Posts: 414
Same here Ive given up on the ATW The manual switch seems OK. Still prefer to use a colour meter and dial it in though.
Mark David Williams is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Sony XAVC / XDCAM / NXCAM / AVCHD / HDV / DV Camera Systems > Sony XDCAM EX Pro Handhelds

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 04:53 PM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network