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Canon XH Series HDV Camcorders
Canon XH G1S / G1 (with SDI), Canon XH A1S / A1 (without SDI).


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Old January 12th, 2007, 08:49 AM   #16
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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.
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Old January 12th, 2007, 09:35 AM   #17
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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.
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Old January 12th, 2007, 11:02 AM   #18
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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
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Old January 13th, 2007, 09:02 AM   #19
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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!?
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Old January 13th, 2007, 09:22 AM   #20
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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
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Old January 13th, 2007, 10:45 AM   #21
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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.
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Old January 13th, 2007, 11:12 AM   #22
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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
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Old January 13th, 2007, 11:25 AM   #23
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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
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Old January 13th, 2007, 11:30 AM   #24
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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
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Old January 13th, 2007, 04:52 PM   #25
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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 :)
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Old January 13th, 2007, 04:56 PM   #26
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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...
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Old January 13th, 2007, 06:19 PM   #27
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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...
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Old January 13th, 2007, 10:03 PM   #28
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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)
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