The First Casualty...

Stu Siegal · January 12th, 2007, 08:49 AM

Matthew, just looked at your footage, and indeed you have a hot pixel. I had the same problem with my Sony TRV900 many years ago.

Mine only came up in progressive mode with a very slow shutter, but I spotted it early only, and simply returned the camera within 7 days - they were common enough so that people regularly checked for them once they open the box. Now, the problem is much less common (doesn't that make you feel better) so its not something you'd read about as an issue. Technically, manufacturers may try to call this acceptible, but on a camera used in a pro environment, such as the A1, it is not. A dead pixel on an LCD is one thing, not great, but on the image itself its quite another. Find a rep at Canon and stick with it until the unit is replaced.

This is one of those times where it would be key to have a Canon rep with a presence on these boards, a la Jan Crittenden. If this were Panasonic cam you had the problem with, I bet she'd be involved ASAP.

Marty Hudzik · January 12th, 2007, 09:35 AM

Where did you buy the camera? Hopefully an authorized dealer. If it is still within 30 days they may be able to exchange it. My dealer goes above and beyond to take care of me....especially on recent purchases.

Peace.

Matthew Nayman · January 12th, 2007, 11:02 AM

unfortunatly it's been overt 30 days, but I am gonna talk to them today. I have given them 10's of thousands... they owe me.

:P

Matthew Nayman · January 13th, 2007, 09:02 AM

I don't get it. I recently emailed Canon about the pixel with a link to the video clip... here is what I got in reply.

"Dear Mr. Matthew Nayman

Thank you for your e-mail inquiry regarding your XH A1.

Your e-mail has been received by the Customer Information Centre of Canon Canada
Inc. We understand your concern.

The "hot pixel" phenomenon usually occurs at long shutter speeds, when the CCD
is exposed longer, causing photosites that are more sensitive to light to appear
"whiteish". They may sometimes be different colours, but are typically
"whitish" to the naked eye.

We reviewed the video clip supplied through the provided URL and do not see a
hot pixel in the circled area. A hot pixel would have been apparent when the
area circled goes dark. On our system, a hot pixel does not appear in this
area. As this is the case the assessment by our Service Department appears to
be accurate. As the provided video footage does not show a hot pixel, we have
no reason to believe a hot pixel will surface in this area.

To verify your camcorder is operating to specification before an important
shoot, it is advised capture test footage in the recording environment before
the actual shoot. In the unlikely event you do encounter a hot pixel you may
reply to this message indicating this is the case. For your records, we
recommend retaining the Service Repair Form supplied by our Service Department
for the most recent inspection.

Should you require further assistance, please feel free to email us or visit our
customer support website at http://www.canon.ca

Sincerely,

David M.

Technical Support Representative

Customer Information Centre

Canon Canada Inc."

Am I nuts? I certainly see a pixel.... You all do to, correct? I am going to link this thread and send them a still with the area blown up. Can you all see that bright dot!?

Matthew Nayman · January 13th, 2007, 09:22 AM

Just to confirm, this is a link to the pixel... please tell me if you think it's dust or glare... it can't be!
www.notomatofilms.com/pixel.jpg

Matthew Nayman · January 13th, 2007, 10:45 AM

Hey guys! I managed to get the pixel to come back!

Hooray! I think....

Seems that I need a slow shutter speed and it will return...

www.notomatofilms.com/deadcamback.wmv

I slowed the footage to 25% so you can examine it more closely. I believe if you look at it next to my other footage, you will see the pixel is in exactly the same place.

Mike Teutsch · January 13th, 2007, 11:12 AM

To me it looks too small to be a pixel. Have you taken a still and blown it up to see it better? Dust maybe?

Good luck---Mike

Matthew Nayman · January 13th, 2007, 11:25 AM

Yes I looked Mike...

The fact is the lens is perfectly clean ,and dust would not show up when covered like that. Also, the pixel is that small... there are almost 2 million of em...

Please refer to my links 2 posts up, www.notomatofilms.com/pixel.jpg

Mike Teutsch · January 13th, 2007, 11:30 AM

Quote:

Originally Posted by Matthew Nayman

Yes I looked Mike...

The fact is the lens is perfectly clean ,and dust would not show up when covered like that. Also, the pixel is that small... there are almost 2 million of em...

Please refer to my links 2 posts up, www.notomatofilms.com/pixel.jpg

I did look at your footage, all of it. When you blow up a frame, what does it look like? What is the shape?

Mike

Matthew Nayman · January 13th, 2007, 04:52 PM

It is squarish, just like a pixel. Because it's back now, after being profesisonally cleaned by canon, having the lens cleaned myself probably 5 times, and searching with a flashlight... it is not dust. Impossible.

Definatly pixel. I know this because it was not there on the tape when I was playing around, until I slowed down the shutter and turned up gain, then BOOM it appears... not just dust :)

Philip Williams · January 13th, 2007, 04:56 PM

Quote:

Originally Posted by Matthew Nayman

It is squarish, just like a pixel. Because it's back now, after being profesisonally cleaned by canon, having the lens cleaned myself probably 5 times, and searching with a flashlight... it is not dust. Impossible.

Definatly pixel. I know this because it was not there on the tape when I was playing around, until I slowed down the shutter and turned up gain, then BOOM it appears... not just dust :)

First off, best way to prove its not dust is to shoot with the lens cap on. No light = no dust particles present (well, to be lit anyway).

At what gain setting is this thing showing up at? I'm not sure on this, but if the hot pixel only appears under gain usage at certain shutter speeds... it might be considered to be within operational limits. Don't have the manual in front of me right now though...

Matthew Nayman · January 13th, 2007, 06:19 PM

Well, this time it showed up at 12db and 1/12 of a second, but in the first clip it is at 6db and 1/24 of a second... that should be well within the operational limits of the camera...

Matthew Nayman · January 13th, 2007, 10:03 PM

okay, final test. Pardon the dorkiness of my voice on it...

Here you go. I can see it with the lens cap on.

Also, it was MUCH brighter through component, than via firewire... must be 4:2:2 vs. 4:1:1

www.notomatofilms.com/definative.wmv (84mb)

January 12th, 2007, 08:49 AM	#16
Stu Siegal Regular Crew Join Date: Nov 2003 Location: Boston Posts: 151	Matthew, just looked at your footage, and indeed you have a hot pixel. I had the same problem with my Sony TRV900 many years ago. Mine only came up in progressive mode with a very slow shutter, but I spotted it early only, and simply returned the camera within 7 days - they were common enough so that people regularly checked for them once they open the box. Now, the problem is much less common (doesn't that make you feel better) so its not something you'd read about as an issue. Technically, manufacturers may try to call this acceptible, but on a camera used in a pro environment, such as the A1, it is not. A dead pixel on an LCD is one thing, not great, but on the image itself its quite another. Find a rep at Canon and stick with it until the unit is replaced. This is one of those times where it would be key to have a Canon rep with a presence on these boards, a la Jan Crittenden. If this were Panasonic cam you had the problem with, I bet she'd be involved ASAP. Last edited by Stu Siegal; January 12th, 2007 at 09:59 AM.

January 13th, 2007, 11:12 AM	#22
Mike Teutsch Inner Circle Join Date: Oct 2004 Location: Port St. Lucie, Florida Posts: 2,614	To me it looks too small to be a pixel. Have you taken a still and blown it up to see it better? Dust maybe? Good luck---Mike __________________ Chapter one, line one. The BH.

January 12th, 2007, 09:35 AM	#17
Marty Hudzik Trustee Join Date: Jul 2004 Location: Canton, Ohio Posts: 1,771	Where did you buy the camera? Hopefully an authorized dealer. If it is still within 30 days they may be able to exchange it. My dealer goes above and beyond to take care of me....especially on recent purchases. Peace.

January 12th, 2007, 11:02 AM	#18
Matthew Nayman Major Player Join Date: Feb 2005 Location: Toronto Posts: 917	unfortunatly it's been overt 30 days, but I am gonna talk to them today. I have given them 10's of thousands... they owe me. :P

January 13th, 2007, 09:02 AM	#19
Matthew Nayman Major Player Join Date: Feb 2005 Location: Toronto Posts: 917	I don't get it. I recently emailed Canon about the pixel with a link to the video clip... here is what I got in reply. "Dear Mr. Matthew Nayman Thank you for your e-mail inquiry regarding your XH A1. Your e-mail has been received by the Customer Information Centre of Canon Canada Inc. We understand your concern. The "hot pixel" phenomenon usually occurs at long shutter speeds, when the CCD is exposed longer, causing photosites that are more sensitive to light to appear "whiteish". They may sometimes be different colours, but are typically "whitish" to the naked eye. We reviewed the video clip supplied through the provided URL and do not see a hot pixel in the circled area. A hot pixel would have been apparent when the area circled goes dark. On our system, a hot pixel does not appear in this area. As this is the case the assessment by our Service Department appears to be accurate. As the provided video footage does not show a hot pixel, we have no reason to believe a hot pixel will surface in this area. To verify your camcorder is operating to specification before an important shoot, it is advised capture test footage in the recording environment before the actual shoot. In the unlikely event you do encounter a hot pixel you may reply to this message indicating this is the case. For your records, we recommend retaining the Service Repair Form supplied by our Service Department for the most recent inspection. Should you require further assistance, please feel free to email us or visit our customer support website at http://www.canon.ca Sincerely, David M. Technical Support Representative Customer Information Centre Canon Canada Inc." Am I nuts? I certainly see a pixel.... You all do to, correct? I am going to link this thread and send them a still with the area blown up. Can you all see that bright dot!?

January 13th, 2007, 09:22 AM	#20
Matthew Nayman Major Player Join Date: Feb 2005 Location: Toronto Posts: 917	Just to confirm, this is a link to the pixel... please tell me if you think it's dust or glare... it can't be! www.notomatofilms.com/pixel.jpg

January 13th, 2007, 10:45 AM	#21
Matthew Nayman Major Player Join Date: Feb 2005 Location: Toronto Posts: 917	Hey guys! I managed to get the pixel to come back! Hooray! I think.... Seems that I need a slow shutter speed and it will return... www.notomatofilms.com/deadcamback.wmv I slowed the footage to 25% so you can examine it more closely. I believe if you look at it next to my other footage, you will see the pixel is in exactly the same place.

January 13th, 2007, 11:25 AM	#23
Matthew Nayman Major Player Join Date: Feb 2005 Location: Toronto Posts: 917	Yes I looked Mike... The fact is the lens is perfectly clean ,and dust would not show up when covered like that. Also, the pixel is that small... there are almost 2 million of em... Please refer to my links 2 posts up, www.notomatofilms.com/pixel.jpg

January 13th, 2007, 04:52 PM	#25
Matthew Nayman Major Player Join Date: Feb 2005 Location: Toronto Posts: 917	It is squarish, just like a pixel. Because it's back now, after being profesisonally cleaned by canon, having the lens cleaned myself probably 5 times, and searching with a flashlight... it is not dust. Impossible. Definatly pixel. I know this because it was not there on the tape when I was playing around, until I slowed down the shutter and turned up gain, then BOOM it appears... not just dust :)

January 13th, 2007, 06:19 PM	#27
Matthew Nayman Major Player Join Date: Feb 2005 Location: Toronto Posts: 917	Well, this time it showed up at 12db and 1/12 of a second, but in the first clip it is at 6db and 1/24 of a second... that should be well within the operational limits of the camera...

January 13th, 2007, 10:03 PM	#28
Matthew Nayman Major Player Join Date: Feb 2005 Location: Toronto Posts: 917	okay, final test. Pardon the dorkiness of my voice on it... Here you go. I can see it with the lens cap on. Also, it was MUCH brighter through component, than via firewire... must be 4:2:2 vs. 4:1:1 www.notomatofilms.com/definative.wmv (84mb)