Pixel Masking...playing JVC doctor at DVinfo.net

Charles Barreto · May 31st, 2008, 09:22 PM

So I had a dead pixel on my GY-HD100...out of nowhere it appeared. So I looked and looked and found a way to do the pixel mapping...had to do it twice before it dissapeared.

My concern is...is this proceedure a "real" fix or a temporary fix. Is this the same proceedure they would do at a JVC authorized center. Once one apears could I start seeing a occurance of more?

Robert Castiglione · June 1st, 2008, 07:27 AM

Hi Charles,

If you search the forums this has been dealt with pretty extensively.

My understanding is that dead pixels are a fact of life, that the pixel masking function is exactly what a technician would do, and finally that you could use the function many many times - certainly more times than the life of the camera. I have used it once around 50 hours and there really is no issue.

Rob

Alex Humphrey · June 1st, 2008, 07:54 AM

try to do it on a hot summer day after it's been on for at least 30 minutes in the sun. Heat brings out the dead pixels and makes them more visible. I doubt heat creates them however.

Mark Silva · June 2nd, 2008, 11:15 AM

one of my colleagues has an HD100 just like mine and whenever he fly's to a foreign country he almost always has new hot pixels from the plane ride.

You have to admit that its really great that JVC allows us to do this.
I remember a Canon GL1 having hot pixels and replacing a ccd block instead of pixel masking at it cost 1,000.

Charles Barreto · June 2nd, 2008, 10:03 PM

Can these dead pixels appear while shooting....like lets say that I set my scene and the picture is perfect...can 20 minutes into recording a pixel just go dead?

I've looked around the forum for more info on this but i cant seem to find one that covers in details...the ones i find are the ones of people asking to private message to find out hot to do it...

thanks

Robert Castiglione · June 2nd, 2008, 10:10 PM

I suppose its possible but why fuss about it?

It falls I think into the category of unnecessary anxieties.

Sensible precautions are to regularly check for dead pixels before going out on a shoot on a large enough monitor to actually see them. You just cannot see them on the viewfinder.

Also, dont forget that there are pixel masking plug ins for FCP just in case it does happen so it is not the end of the world.

Rob

Charles Barreto · June 3rd, 2008, 11:32 AM

oh...not fuzzing about it...just wondering. In my search on this usergroup all I have seen in negativity towards this issue and others...like SSE and what have you.

People treat this issue as if were a problem with the camera...so i just want to make sure I don't have to be extra careful. With my other cameras I just set it and forget it...but I was taken back with other user's comments and ill feeling.

Joseph A. Benoit · June 4th, 2008, 09:04 PM

Hello
what is the proper proceedure to fix a dead pixel on my 110

Thank You
Joe

Mark Silva · June 5th, 2008, 10:17 AM

Service Menu accessed while in HDV 24p mode by holding the Focus Assist button (the one on the camera body) when you press and hold the Menu/Status button for at least 5 seconds. You must be in 24p mode for this operation.

You see an advanced menu where the second line says CAMERA1. Move the cursor down and push the shutter wheel to enter that menu and now you have a list with the sixth item being PIXEL COMPEN. Move down to it and select that item, the word CANCEL blinks. Change it to EXECUTE and push again. It takes about 10 seconds or so to perform the operation and then tells you to power off the camera. You are done. Make sure Focus Assist is now OFF and exit 24p mode if desired.

May 31st, 2008, 09:22 PM	#1
Charles Barreto Regular Crew Join Date: Mar 2008 Location: Tampa, Florida Posts: 37	Pixel Masking...playing JVC doctor So I had a dead pixel on my GY-HD100...out of nowhere it appeared. So I looked and looked and found a way to do the pixel mapping...had to do it twice before it dissapeared. My concern is...is this proceedure a "real" fix or a temporary fix. Is this the same proceedure they would do at a JVC authorized center. Once one apears could I start seeing a occurance of more?

June 1st, 2008, 07:27 AM	#2
Robert Castiglione Major Player Join Date: Mar 2003 Location: Fremantle, Western Australia Posts: 253	Hi Charles, If you search the forums this has been dealt with pretty extensively. My understanding is that dead pixels are a fact of life, that the pixel masking function is exactly what a technician would do, and finally that you could use the function many many times - certainly more times than the life of the camera. I have used it once around 50 hours and there really is no issue. Rob

June 1st, 2008, 07:54 AM	#3
Alex Humphrey Major Player Join Date: Mar 2007 Location: california North and South Posts: 642	try to do it on a hot summer day after it's been on for at least 30 minutes in the sun. Heat brings out the dead pixels and makes them more visible. I doubt heat creates them however.

June 2nd, 2008, 11:15 AM	#4
Mark Silva Major Player Join Date: Apr 2006 Location: Pacific NW Posts: 431	one of my colleagues has an HD100 just like mine and whenever he fly's to a foreign country he almost always has new hot pixels from the plane ride. You have to admit that its really great that JVC allows us to do this. I remember a Canon GL1 having hot pixels and replacing a ccd block instead of pixel masking at it cost 1,000.

June 2nd, 2008, 10:03 PM	#5
Charles Barreto Regular Crew Join Date: Mar 2008 Location: Tampa, Florida Posts: 37	Can these dead pixels appear while shooting....like lets say that I set my scene and the picture is perfect...can 20 minutes into recording a pixel just go dead? I've looked around the forum for more info on this but i cant seem to find one that covers in details...the ones i find are the ones of people asking to private message to find out hot to do it... thanks

June 2nd, 2008, 10:10 PM	#6
Robert Castiglione Major Player Join Date: Mar 2003 Location: Fremantle, Western Australia Posts: 253	I suppose its possible but why fuss about it? It falls I think into the category of unnecessary anxieties. Sensible precautions are to regularly check for dead pixels before going out on a shoot on a large enough monitor to actually see them. You just cannot see them on the viewfinder. Also, dont forget that there are pixel masking plug ins for FCP just in case it does happen so it is not the end of the world. Rob

June 3rd, 2008, 11:32 AM	#7
Charles Barreto Regular Crew Join Date: Mar 2008 Location: Tampa, Florida Posts: 37	oh...not fuzzing about it...just wondering. In my search on this usergroup all I have seen in negativity towards this issue and others...like SSE and what have you. People treat this issue as if were a problem with the camera...so i just want to make sure I don't have to be extra careful. With my other cameras I just set it and forget it...but I was taken back with other user's comments and ill feeling.

June 4th, 2008, 09:04 PM	#8
Joseph A. Benoit Major Player Join Date: Feb 2007 Location: Coconut Creek FL Posts: 291	Hello what is the proper proceedure to fix a dead pixel on my 110 Thank You Joe

June 5th, 2008, 10:17 AM	#9
Mark Silva Major Player Join Date: Apr 2006 Location: Pacific NW Posts: 431	Service Menu accessed while in HDV 24p mode by holding the Focus Assist button (the one on the camera body) when you press and hold the Menu/Status button for at least 5 seconds. You must be in 24p mode for this operation. You see an advanced menu where the second line says CAMERA1. Move the cursor down and push the shutter wheel to enter that menu and now you have a list with the sixth item being PIXEL COMPEN. Move down to it and select that item, the word CANCEL blinks. Change it to EXECUTE and push again. It takes about 10 seconds or so to perform the operation and then tells you to power off the camera. You are done. Make sure Focus Assist is now OFF and exit 24p mode if desired.