1. Join Now

    AVForums.com uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Mystery of red pixel in photo

Discussion in 'Photography Forums' started by volvogal, Apr 7, 2005.

  1. volvogal

    volvogal
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    On Tuesday this week I bought a Canon A85 digital camera after spending months deciding which one to go for.

    I am pleased with it so far except I have just noticed a single red pixel showing up in photos where there should be another colour. I thought at first my screen had developed a missing pixel until I discovered this only shows up in photos taken with the new camera.

    I haven't heard of missing pixels with digital cameras - unless someone can enlighten me?

    If this is quite a common fault, is it an acceptable fault as far as the manufacturer is concerned (as in missing/dead pixels with screens) or should I return it to the shop?
     
  2. ASH1

    ASH1
    Active Member

    Joined:
    Mar 1, 2003
    Messages:
    1,208
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    51
    Ratings:
    +61
    I would take it back and ask for a replacement.

    ASH1
     
  3. volvogal

    volvogal
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    Thanks Ash1 for speedy reply.

    Knowing how much trouble I had over one dead pixel when I bought my screen, I wasn't sure about cameras, so your reply has re-inforced my thoughts about taking the camera back.
     
  4. Oakey

    Oakey
    Active Member

    Joined:
    Aug 4, 2002
    Messages:
    523
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    18
    Ratings:
    +6
    Cameras can get dead pixels as far as I know. Well, I know my EOS20D can so it's possibly the same for all digicams.
     
  5. volvogal

    volvogal
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    Oakey, I've just been informed by others that the fault is due to the image sensor (CCD) which is not acceptable in a new camera. Hope you took your camera back as a faulty item?
     
  6. HotblackDesiato

    HotblackDesiato
    Active Member

    Joined:
    Dec 4, 2002
    Messages:
    1,170
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    63
    Location:
    USA
    Ratings:
    +230
    Oakey is correct all sensors will have some pixels that are a bit warmer than others... but on a new camera and using everyday shutter speeds you were right to exchange.
     
  7. volvogal

    volvogal
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    Took camera back this morning to shop - exchanged with no problem. I've taken some sample images which I will check later on in case the replacement has the same fault.

    Many thanks everyone
     
  8. Oakey

    Oakey
    Active Member

    Joined:
    Aug 4, 2002
    Messages:
    523
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    18
    Ratings:
    +6
    My EOS20D is fine, no dead pixels. :) I was just stating I know there has been this problem with the 20D
     
  9. mr jones

    mr jones
    Standard Member

    Joined:
    Oct 23, 2004
    Messages:
    1,041
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    41
    Location:
    (S)cumbria, UK
    Ratings:
    +22
    dunno if ive got any dead pixels, not checked, dunno how to, doesnt bother me
     
  10. volvogal

    volvogal
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    mr jones:

    I took a photo of my mother's black cat. When viewing it on screen, I saw a bright red dot which I thought was another dead pixel on/in my nice new flat screen. Whilst manipulating the photo in my graphics program, I discovered that the bright red pixel increased in size when I zoomed in to erase part of the background of the photo. This made me realise the problem was with the camera, not my monitor.

    Hope this helps.
     
  11. Oakey

    Oakey
    Active Member

    Joined:
    Aug 4, 2002
    Messages:
    523
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    18
    Ratings:
    +6
    Take a photo with the lens cover on (if you have one) or of something black
     
  12. mr jones

    mr jones
    Standard Member

    Joined:
    Oct 23, 2004
    Messages:
    1,041
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    41
    Location:
    (S)cumbria, UK
    Ratings:
    +22

Share This Page

Loading...