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Dead pixel?

HeldDownHeldDown Registered Users Posts: 255 Major grins
edited October 20, 2005 in Cameras
So today I noticed a nasty white pixel in the lower-left/middle of my 300D -- at the same time, I noticed a cruddy red one middle near the bottom. Not impressed, I called Henrys (where I bought it as Open Box/As New) but could only speak to someone at another store -- they told me that I only 21 days to exchange faulty products. I bought the camera 31 days ago, exactly. Also, they don't have any black 300Ds in the store that are new/ob and with no dead pixels (I checked when I bought this.) Canon said they'll gladly "remap" he pixels (Whatever that means?) but that I would have to wait a month to get it back. That's definetely too long -- I need my camera every day!
I realized a little while ago that the dead pixels have been there since day one, but only my RAW pixel-peeping today brought them to my attention. So, does anyone have any suggestions? Seeing as how I just noticed, should I just leave well enough alone and live with a couple cruddy pixels?
imag●e●NATION
SEEING THE WORLD IN A WHOLE NEW LIGHT...
http://www.imag-e-nation.net

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    SeymoreSeymore Banned Posts: 1,539 Major grins
    edited October 19, 2005
    Well, if they're on the LCD, I'd be less worried than if they were on the CCD/CMOS chip. If they show in your image on the puter, I'd get Canon to replace the CMOS chip.
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    JCDossJCDoss Registered Users Posts: 189 Major grins
    edited October 19, 2005
    They don't replace CMOS chips for that. They will map out dead pixels for you, though. I had one on my 20D, and that's what they did.

    Konica-Minolta apparently has an automatic function that locates and maps out stuck pixels on the Maxxum 7 CCD monthly. Wouldn't that be sweet if Canon put that functionality into the next generation?
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    HeldDownHeldDown Registered Users Posts: 255 Major grins
    edited October 19, 2005
    It's definetely the CCD. What does "mapping out" a pixel mean though? The guy on the other end of Canon support kind of implied it didn't fix the problem, it just kind of fudged it.
    imag●e●NATION
    SEEING THE WORLD IN A WHOLE NEW LIGHT...
    http://www.imag-e-nation.net
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    JCDossJCDoss Registered Users Posts: 189 Major grins
    edited October 19, 2005
    Essentially, "mapping out" means that the software will identify which pixel is dead and will ignore its contribution to the image. So, the dead pixel will be replaced by data from the surrounding pixels, and the surrounding pixels will not gain any contribution from the dead one.

    Each pixel is either R, G, or B, and the data that one individual pixel provides affects the surrounding 20 or 30 (or more?) pixels. Ignoring one, or even a dozen dead pixels in an 8 megapixel image is undetectable.

    Dead pixels happen, and in fact it is likely your camera shipped with a few on board and mapped out before you even bought it. What sucks is when new ones start popping up.
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    ScottMcLeodScottMcLeod Registered Users Posts: 753 Major grins
    edited October 20, 2005
    Oh really... Hrm.

    Looks like i'm going to have to call canon and ask them how to map out these pixels, because my 10D has one pretty effing obvious one.
    - Scott
    http://framebyframe.ca
    [Bodies] Canon EOS 20D - Canon EOS 500
    [Lenses] Sigma APO 70-200 f/2.8 - Canon EF 85mm f/1.8 - Canon EF 50mm f/1.8 - Tamron XR Di 28-75mm f/2.8 - Canon EF-S 18-55mm f/3.5-5.6
    [Flash] Sigma EF500 Super DG Flash
    [Tripod]     Manfrotto 055 Pro Black
    [Head] 484RC2, 200RC2
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    JCDossJCDoss Registered Users Posts: 189 Major grins
    edited October 20, 2005
    It's not something you can do. You have to send it in for service. It's free, and my turnaround time (from central Arkansas to the NJ service center) was about a week.
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    ScottMcLeodScottMcLeod Registered Users Posts: 753 Major grins
    edited October 20, 2005
    JCDoss wrote:
    It's not something you can do. You have to send it in for service. It's free, and my turnaround time (from central Arkansas to the NJ service center) was about a week.
    Our turnaround time up here for Canon Canada's head office repair center is about... 3-4 weeks.
    - Scott
    http://framebyframe.ca
    [Bodies] Canon EOS 20D - Canon EOS 500
    [Lenses] Sigma APO 70-200 f/2.8 - Canon EF 85mm f/1.8 - Canon EF 50mm f/1.8 - Tamron XR Di 28-75mm f/2.8 - Canon EF-S 18-55mm f/3.5-5.6
    [Flash] Sigma EF500 Super DG Flash
    [Tripod]     Manfrotto 055 Pro Black
    [Head] 484RC2, 200RC2
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    JCDossJCDoss Registered Users Posts: 189 Major grins
    edited October 20, 2005
    Ay caramba! Can you send it to a US factory service center?

    Some people are capable of living with a dead pixel and simply editing the blemishes out in Photoshop... of ever single photo they take. I'm not one of those people.
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    HeldDownHeldDown Registered Users Posts: 255 Major grins
    edited October 20, 2005
    Store I bought it at offered to let me trade my 300D in for the full value I paid and get a deal on an open box 350D -- costs me a little more than $200 to upgrade. I'm considering it.
    imag●e●NATION
    SEEING THE WORLD IN A WHOLE NEW LIGHT...
    http://www.imag-e-nation.net
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    ScottMcLeodScottMcLeod Registered Users Posts: 753 Major grins
    edited October 20, 2005
    HeldDown wrote:
    Store I bought it at offered to let me trade my 300D in for the full value I paid and get a deal on an open box 350D -- costs me a little more than $200 to upgrade. I'm considering it.
    Dooooo itttttt....

    ... but bring your laptop and do a sensor check.
    - Scott
    http://framebyframe.ca
    [Bodies] Canon EOS 20D - Canon EOS 500
    [Lenses] Sigma APO 70-200 f/2.8 - Canon EF 85mm f/1.8 - Canon EF 50mm f/1.8 - Tamron XR Di 28-75mm f/2.8 - Canon EF-S 18-55mm f/3.5-5.6
    [Flash] Sigma EF500 Super DG Flash
    [Tripod]     Manfrotto 055 Pro Black
    [Head] 484RC2, 200RC2
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    HeldDownHeldDown Registered Users Posts: 255 Major grins
    edited October 20, 2005
    Went and tested it, brought the card home for inspection. Sensor is 100% spotless -- absolutely zero dead pixels, and I do mean zero. No hot, no dead, no lazy. I'm going to go get it tonight or tomorrow.

    Also, I got a 'v' shaped bit of dirt on the sensor in my 300D - it looks like there's always a bird in the background! :D
    imag●e●NATION
    SEEING THE WORLD IN A WHOLE NEW LIGHT...
    http://www.imag-e-nation.net
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    Peter DumontPeter Dumont Registered Users Posts: 261 Major grins
    edited October 20, 2005
    Stupid Question ?
    Instead of shipping your camera back to Canon for a month, Can't dead pixels eassily be corrected by a little pixelcloning in pp ?

    Bye
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