Focusing issue 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 July 2nd, 2012, 03:53 PM   #1
Regular Crew
 
Join Date: Mar 2009
Location: Croatia
Posts: 50
Focusing issue

We have been shooting some music videos in the last days, and had a problem with focus. We used two EX1 and one EX3, and sometimes it wasn`t possible to fully focus the shot. I turned on peaking, and shot at its maximum, then when we put the footage on big screen, we saw the problem. It was even possible to see on small camera LCD that it is not fully focused. I checked several times that macro is turned off.
I`m trying to think if it is because of high temperature, as we were shooting at around noon, with temperature around 30-40 celsius?

I have attached few frame grabs from ClipBrowser so that you can see what I am talking about..

Does anyone had a similar problem? How can it be fixed?

Thanks for help
Attached Thumbnails
Focusing issue-01.bmp   Focusing issue-02.bmp  

Focusing issue-03.bmp   Focusing issue-04.bmp  

Patrik Vale is offline   Reply With Quote
Old July 2nd, 2012, 05:44 PM   #2
Inner Circle
 
Join Date: Jan 2004
Location: Boca Raton, FL
Posts: 2,979
Re: Focusing issue

Could be in need of resetting the back-focus: http://www.dvinfo.net/forum/sony-xdc...ml#post1524295
Les Wilson is offline   Reply With Quote
Old July 2nd, 2012, 06:17 PM   #3
Regular Crew
 
Join Date: Jul 2010
Location: Split, Croatia
Posts: 189
Re: Focusing issue

Yup, backfocus, you can see clearly in the first screengrab that it is shifted forward. Do the procedure and everything will be fine.

Pula? :)
Zoran Vincic is offline   Reply With Quote
Old July 2nd, 2012, 09:24 PM   #4
Inner Circle
 
Join Date: May 2005
Location: Burnaby, BC, Canada
Posts: 2,963
Re: Focusing issue

Start with your EX3 because that is much easier to access the backfocus menu. Go into "LENS > Auto FB ADJ" to do the auto backfocus. For your EX1s, you'll have to gain access to your Maintenance Menu in order to do an auto backfocus.
__________________
I wait for the day cost-efficient global shutter 60fps capable CMOS sensors emerge for use on major manufacturers' cameras. (Sony, Canon, etc.) Rolling Shutters are a plague.
Jack Zhang is offline   Reply With Quote
Old July 16th, 2012, 11:51 AM   #5
Regular Crew
 
Join Date: Mar 2009
Location: Croatia
Posts: 50
Re: Focusing issue

Thanks for very quick help..I have adjusted the back focus now. Some people say that it drifts away with some time..
@Zoran, tako je, jedan smo spot snimali u Areni :)
Patrik Vale is offline   Reply With Quote
Old July 17th, 2012, 01:48 AM   #6
Inner Circle
 
Join Date: Dec 2005
Location: Bracknell, Berkshire, UK
Posts: 4,957
Re: Focusing issue

I found mine would need adjusting after being transported or bumped around in the back of a car on rough roads.
__________________
Alister Chapman, Film-Maker/Stormchaser http://www.xdcam-user.com/alisters-blog/ My XDCAM site and blog. http://www.hurricane-rig.com
Alister Chapman is offline   Reply With Quote
Old July 20th, 2012, 08:37 AM   #7
Major Player
 
Join Date: Feb 2006
Location: bendigo, australia
Posts: 204
Re: Focusing issue

Did the back focus adjustment on my ex1 after I noticed some wide images getting too soft and have definitely noticed an improvement. It was probably long overdue!

Jamie
Jamie Roberts is offline   Reply With Quote
Old July 21st, 2012, 07:48 PM   #8
Major Player
 
Join Date: Jun 2008
Location: Weehawken New Jersey
Posts: 210
Re: Focusing issue

Back focus certainly could have caused this issue, but as you were in direct sunlight at noon, is it possible that your exposures were beyond 5.6? The EX1/3 lens image quickly begins to fall apart beyond that point. f/6.7 might pass, but if you are down at f/11 or f/16 chances are you will get images this soft.
Chuck Fishbein 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 07:41 AM.


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