'Hot White' Pixels F3 at DVinfo.net

Peter G. Johnson · November 10th, 2011, 06:37 AM

Whilst experimenting with the Sound Devices Pix 240, I had the F3 plugged into the television via HDMI and was shocked to find what is known as a 'hot pixel' on recent recordings over the past month. I never would've noticed it so much if not for displaying it on a big screen. It was a distinct, pulsating white and it only became worse when raising the gain against black objects.

Anyway, this followed by lots of tedious testing to make sure it was possibly nothing else than the sensor. I did get rid of it, but not until I'd run the Auto Black Balance seven or eight times. I've had lots of niggling issues with the camera and didn't need another one.

I'm interested to know if anyone has had issues with hot pixels (white or any other color.)

By the way, this problem wasn't present when switching the camera's functions to S-Log. Go figure!

Chris Medico · November 10th, 2011, 07:11 AM

Mine had a hot pixel that you could see in some video modes (60i vs 24p) but not others. I ran the black balance 3 times in a row as indicated by Sony but that didn't solve the problem. Had to go into the service menu and run a stronger correction and that solved it. I've not noticed any in the last few months.

Douglas Villalba · November 10th, 2011, 11:47 AM

I did too while filming "The Awakened". I ran the black balance 3-4 times and it went away.

Tony Brennan · November 10th, 2011, 03:23 PM

All CCD and CMOS sensors can develop 'hot' or dead pixels. That why high end camera manufactures have correction programmes built into the camera. It only becomes a problem if you develop too many hot pixels as there is a limited number that can be corrected.

Peter G. Johnson · November 10th, 2011, 06:33 PM

Quote:

Originally Posted by Chris Medico

Mine had a hot pixel that you could see in some video modes (60i vs 24p) but not others. I ran the black balance 3 times in a row as indicated by Sony but that didn't solve the problem. Had to go into the service menu and run a stronger correction and that solved it. I've not noticed any in the last few months.

Chris, what is a stronger correction? Be nice to know, in case it happens again.

Chris Medico · November 10th, 2011, 06:36 PM

If you run across a problem let me know and I'll help you out.

I've been asked by Sony and Chris H. to not publish the service menu info on the forum.

Basically you go into the service menu and run the Maintenance Black Balance and if that doesn't work you can go in an manually mask the pixel.

Peter G. Johnson · November 10th, 2011, 09:04 PM

Yes, I would like to know (with discretion) the service menu. I spent a couple of wasted hours solving one problem last night. Would like strategies for solving like-problems (i.e.) 'service menu.' Please email details to: pjohnson44 @ aapt . net . au

Interestingly enough, the instruction manual of the PMW-500 offers an explanation for the 'phenomena' of white flecks (P. 184) and provides a remedy. However in the PMW-F3 manual, the wording is almost identical (P. 134), and it stops short of offering a solution. So I would really appreciate instructions for accessing the service menu. On other PMW cameras for example, it's (menu+select+cancel) at the same time.

November 10th, 2011, 06:37 AM	#1
Peter G. Johnson Regular Crew Join Date: Jul 2009 Location: Melbourne Australia Posts: 87	'Hot White' Pixels F3 Whilst experimenting with the Sound Devices Pix 240, I had the F3 plugged into the television via HDMI and was shocked to find what is known as a 'hot pixel' on recent recordings over the past month. I never would've noticed it so much if not for displaying it on a big screen. It was a distinct, pulsating white and it only became worse when raising the gain against black objects. Anyway, this followed by lots of tedious testing to make sure it was possibly nothing else than the sensor. I did get rid of it, but not until I'd run the Auto Black Balance seven or eight times. I've had lots of niggling issues with the camera and didn't need another one. I'm interested to know if anyone has had issues with hot pixels (white or any other color.) By the way, this problem wasn't present when switching the camera's functions to S-Log. Go figure!

November 10th, 2011, 07:11 AM	#2
Chris Medico Inner Circle Join Date: Aug 2006 Location: Efland NC, USA Posts: 2,322	Re: 'Hot White' Pixels F3 Mine had a hot pixel that you could see in some video modes (60i vs 24p) but not others. I ran the black balance 3 times in a row as indicated by Sony but that didn't solve the problem. Had to go into the service menu and run a stronger correction and that solved it. I've not noticed any in the last few months. __________________ http://www.LandYachtMedia.com

November 10th, 2011, 11:47 AM	#3
Douglas Villalba Major Player Join Date: Jul 2005 Location: Miami, Florida, USA Posts: 479	Re: 'Hot White' Pixels F3 I did too while filming "The Awakened". I ran the black balance 3-4 times and it went away. __________________ Douglas Villalba - director/cinematographer/editor Miami, Florida, USA - www.DVtvPRODUCTIONS.com

November 10th, 2011, 03:23 PM	#4
Tony Brennan New Boot Join Date: Jun 2007 Location: Melbourne Australia Posts: 15	Re: 'Hot White' Pixels F3 All CCD and CMOS sensors can develop 'hot' or dead pixels. That why high end camera manufactures have correction programmes built into the camera. It only becomes a problem if you develop too many hot pixels as there is a limited number that can be corrected.

November 10th, 2011, 06:36 PM	#6
Chris Medico Inner Circle Join Date: Aug 2006 Location: Efland NC, USA Posts: 2,322	Re: 'Hot White' Pixels F3 If you run across a problem let me know and I'll help you out. I've been asked by Sony and Chris H. to not publish the service menu info on the forum. Basically you go into the service menu and run the Maintenance Black Balance and if that doesn't work you can go in an manually mask the pixel. __________________ http://www.LandYachtMedia.com

November 10th, 2011, 09:04 PM	#7
Peter G. Johnson Regular Crew Join Date: Jul 2009 Location: Melbourne Australia Posts: 87	Re: 'Hot White' Pixels F3 Yes, I would like to know (with discretion) the service menu. I spent a couple of wasted hours solving one problem last night. Would like strategies for solving like-problems (i.e.) 'service menu.' Please email details to: pjohnson44 @ aapt . net . au Interestingly enough, the instruction manual of the PMW-500 offers an explanation for the 'phenomena' of white flecks (P. 184) and provides a remedy. However in the PMW-F3 manual, the wording is almost identical (P. 134), and it stops short of offering a solution. So I would really appreciate instructions for accessing the service menu. On other PMW cameras for example, it's (menu+select+cancel) at the same time. Last edited by Peter G. Johnson; November 11th, 2011 at 04:16 AM.