1. Sweety

    Sweety

    Messages:
    62
    Name:
    Neil
    Edit My Images:
    Yes
    I could do with some advice please, all of the images I have taken this week with my Canon 750D have had a great deal of white dots on them which are easily seen & this happens with both jpeg & raw images. When I zoom in on the images on my laptop they look like white pixels, I took a couple of shots with the lens cap on & I can't see them but it happens if I use my kit lens or my Tamron SP 70-300mm lens with shutter speeds of 1/10 - 1/800th of a second (haven't tried going either side of the shutter speeds) & ISO has no baring on the white dots. Could I be suffering from a lot of dead or stuck pixels ? I know I do suffer from some hot pixels on long exposures which show up as either red or blue
     
  2. LongLensPhotography

    LongLensPhotography

    Messages:
    13,263
    Name:
    Truth Teller
    Edit My Images:
    No
    I would post an example. Stuck pixels should show up with cap on but let's see what's going on.
     
  3. ecoleman

    ecoleman

    Messages:
    4,577
    Name:
    Elliott
    Edit My Images:
    No
    :agree:
    Dead pixels would show up with the lens cap on.

    What about shutter speeds slower than 1/10 or faster than 1/800?
     
  4. chunshine

    chunshine

    Messages:
    410
    Name:
    Alan
    Edit My Images:
    Yes
    I used to get this on my old 7D and after contacting Canon and getting no joy and searching the web it all boiled down to how unforgiving the thing was on underexposure. I found that if I made sure the exposure was correct or just slightly over I didn't get the white spots but if I took a shot of the same scene just under exposed they appeared. I have still got the camera and use it a lot for low light and night shoots and have to say I no longer suffer with this problem now I understand how sensitive the damn thing is :)
     
  5. soupdragon

    soupdragon

    Messages:
    926
    Name:
    Tony
    Edit My Images:
    Yes
    I'm not sure but I think you can map them out in camera.
     
  6. chunshine

    chunshine

    Messages:
    410
    Name:
    Alan
    Edit My Images:
    Yes
    Haha! If it's the same as I used to get there will be 100's of spots! :LOL:
     
  7. SFTPhotography

    SFTPhotography Top Cat

    Messages:
    15,990
    Name:
    Steve
    Edit My Images:
    Yes
    hot pixels for sure. Big problem on my Nikon D800 but not in my D810's. Unrelated to yours but a common issue.
     
  8. holty

    holty

    Messages:
    4,848
    Edit My Images:
    No
    will a sensor clean not get rid ?
     
  9. HoppyUK

    HoppyUK

    Messages:
    22,547
    Name:
    Richard
    Edit My Images:
    No
    Dust spots are dark...
     
  10. TheSeeingEye

    TheSeeingEye

    Messages:
    21
    Name:
    Ian
    Edit My Images:
    No
    This sounds simply like noise? Are your sure you are not shooting at 6400 iso or higher then 'pixel peeping'? Best post an an example image with meta data please.
     
  11. TheSeeingEye

    TheSeeingEye

    Messages:
    21
    Name:
    Ian
    Edit My Images:
    No
    Highly unlikely to be 'hot pixels' unless you have suffered catastrophic sensor damage? As HoppyUK says dust spots are dark and they might be fairly numerous (20) but are unlikely to be in the 100's unless you live in a Flour Mill?
     

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