red pixels at DVinfo.net

Cees van Kempen · January 8th, 2012, 06:34 AM

I did a timelapse of the sky last night @18db and 1/3 second. In the footage there are two clear red pixels, that I do not see under 'normal' shooting circumstances. Also not when shooting (very) dark scenes. Does someone know where this comes from and what to do about it?

Stu Siegal · January 8th, 2012, 12:01 PM

I recall from my trv 900 days that under these circumstances - high gain and low shutter speed at 24p - hot pixels on the sensor that don't show up under normal shooting specs can show up. That might be the case. It was a serviceable issue, as I recall, though this was long ago.

Keith Forman · January 8th, 2012, 12:53 PM

Quote:

Originally Posted by Cees van Kempen

I did a timelapse of the sky last night @18db and 1/3 second. In the footage there are two clear red pixels, that I do not see under 'normal' shooting circumstances. Also not when shooting (very) dark scenes. Does someone know where this comes from and what to do about it?

It is possibly dust on the sensor. I already had that issue but was easily fixed.

Ryan Creason · January 8th, 2012, 03:32 PM

You could try black balancing. Sometimes recovers lost or stuck pixels.

Glen Vandermolen · January 12th, 2012, 05:12 AM

Someone on another forum had this same issue. Black balancing should correct this.

Cees van Kempen · January 13th, 2012, 01:55 PM

Thanks all. Black balance did the trick. What worries me however is the remark in the manual: "The adjusted settings are stored only temporarily. The settings return to the default settings when you turn the power off."

I did not see the red pixels reappear after switching on/off, but does this risk exist?

January 8th, 2012, 06:34 AM	#1
Cees van Kempen Major Player Join Date: Jan 2010 Location: Nieuw-Vossemeer, The Netherlands Posts: 455	red pixels I did a timelapse of the sky last night @18db and 1/3 second. In the footage there are two clear red pixels, that I do not see under 'normal' shooting circumstances. Also not when shooting (very) dark scenes. Does someone know where this comes from and what to do about it?

January 8th, 2012, 12:01 PM	#2
Stu Siegal Regular Crew Join Date: Nov 2003 Location: Boston Posts: 151	Re: red pixels I recall from my trv 900 days that under these circumstances - high gain and low shutter speed at 24p - hot pixels on the sensor that don't show up under normal shooting specs can show up. That might be the case. It was a serviceable issue, as I recall, though this was long ago. __________________ www.stusiegal.com

January 8th, 2012, 03:32 PM	#4
Ryan Creason Regular Crew Join Date: Jun 2011 Location: Corvallis, Oregon Posts: 39	Re: red pixels You could try black balancing. Sometimes recovers lost or stuck pixels.

January 12th, 2012, 05:12 AM	#5
Glen Vandermolen Space Hipster Join Date: Jun 2003 Location: Jacksonville, FL Posts: 1,596	Re: red pixels Someone on another forum had this same issue. Black balancing should correct this.

January 13th, 2012, 01:55 PM	#6
Cees van Kempen Major Player Join Date: Jan 2010 Location: Nieuw-Vossemeer, The Netherlands Posts: 455	Re: red pixels Thanks all. Black balance did the trick. What worries me however is the remark in the manual: "The adjusted settings are stored only temporarily. The settings return to the default settings when you turn the power off." I did not see the red pixels reappear after switching on/off, but does this risk exist?