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Thread: What is Wrong with mi Night Shoot

  1. #1

    Default What is Wrong with mi Night Shoot

    Any kind soul here can help explain the large white dots in the image??
    Using S30


    Image Size remain large inorder to see the ghost


    ExposureTime : 1.00Sec
    FNumber : F2.8
    ExifVersion : 0210
    DateTimeOriginal : 2002:03:25 20:28:32
    DateTimeDigitized : 2002:03:25 20:28:32
    CompressedBitsPerPixel : 3/1 (bit/pixel)
    ShutterSpeedValue : 1.00Sec
    ApertureValue : F2.8
    ExposureBiasValue : EV0.0
    MaxApertureValue : F2.8
    SubjectDistance : 13.63(m)
    MeteringMode : Division
    Flash : Fired
    FocalLength : 7.09(mm)
    UserComment :
    ExifImageWidth : 2048
    ExifImageHeight : 1536
    Vendor Original Information
    MacroMode : Off
    Self-timer : 10sec
    CompressionRate : Fine
    Flash : Red-Eye Reducing Auto
    Sequence Mode : single
    Focus Mode : Single
    ImageSize : Large
    Easy shooting mode : Night
    Digital Tele : Off
    Contrast : Normal
    Sharpness : Normal
    CCD Sensitivity : AUTO
    MeteringMode : Evaluative
    AF point selected : center
    ExposureProgram : Easy shooting
    Focal length of lens : 227-682 Unit:32(mm)
    White Balance : Tungsten Lamp
    OpticalZoom Step Value : 0
    Flash bias : 0 EV




    ExposureTime : 1.00Sec
    FNumber : F2.8
    ExifVersion : 0210
    DateTimeOriginal : 2002:03:25 20:27:52
    DateTimeDigitized : 2002:03:25 20:27:52
    CompressedBitsPerPixel : 3/1 (bit/pixel)
    ShutterSpeedValue : 1.00Sec
    ApertureValue : F2.8
    ExposureBiasValue : EV0.0
    MaxApertureValue : F2.8
    SubjectDistance : 4.19(m)
    MeteringMode : Division
    Flash : Fired
    FocalLength : 7.09(mm)
    UserComment :
    ExifImageWidth : 2048
    ExifImageHeight : 1536
    Vendor Original Information
    MacroMode : Off
    Self-timer : 10sec
    CompressionRate : Fine
    Flash : Red-Eye Reducing Auto
    Sequence Mode : single
    Focus Mode : Single
    ImageSize : Large
    Easy shooting mode : Night
    Digital Tele : Off
    Contrast : Normal
    Sharpness : Normal
    CCD Sensitivity : AUTO
    MeteringMode : Evaluative
    AF point selected : center
    ExposureProgram : Easy shooting
    Focal length of lens : 227-682 Unit:32(mm)
    White Balance : Tungsten Lamp
    OpticalZoom Step Value : 0
    Flash bias : 0 EV
    Last edited by hong; 25th March 2002 at 10:45 PM.

  2. #2
    fcpga
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    Default

    its a common problem with Canon S30/40 camera.

    Check out the user comments in DPreview you will know

  3. #3

    Default

    which page, cannot find it

    maybe you give me the exact page of the url

    canon s40 review here
    http://www.dpreview.com/reviews/canons40/

  4. #4
    fcpga
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    Default

    see here,

    http://www.dpreview.com/reviews/read...dkey=canon_s30

    http://www.dpreview.com/reviews/read...dkey=canon_s40

    it doesn't appear on every shot, but maybe 1 in 6-7. quite annoying.

    Even some people in this forum and hardwarezone. Just do a search.

    Don't understand why people still swear by Canon. But I will never ever buy a Canon.

  5. #5
    Senior Member
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    Default

    heard it's a common problem.... not sure if Canon ca do anything about it but you could try asking them.
    Check out my wildlife pics at www.instagram.com/conrad_nature

  6. #6
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    Default

    Looks like your lens is not very clean, which is probably what caused the round spots.

    Regards
    CK

  7. #7

    Default

    Originally posted by Simon


    RUBBISH, just by looking at the setting the 2 photos are taken, it's all wrong. Using whatever camera at the same setting will not give you any better shots.

    The FNumber : F2.8 wide open should not be use for Long Exposure shots. Lack of DOF and short exposeure time will make your photos details unsharp.

    Try shooting at a bigger FNumber or Smaller Aperture. Example: f/16 @ 30secs
    Simon, but he was referring to the white spots you know, not how sharp the images are, etc. The photos are taken at 1s, which shouldn't give much hotpixels, if the white spots are suspected to be hotpixels. I take niteshots at F2.8 and 2-4s exposure cos I can't afford a F8 and 8s, sure got lots of hotpixels. And I don't get white spots like that.

  8. #8
    ClubSNAP Admin
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    Originally posted by Tweek


    Simon, but he was referring to the white spots you know, not how sharp the images are, etc. The photos are taken at 1s, which shouldn't give much hotpixels, if the white spots are suspected to be hotpixels. I take niteshots at F2.8 and 2-4s exposure cos I can't afford a F8 and 8s, sure got lots of hotpixels. And I don't get white spots like that.
    Yap, my mistake, del my own post, i forgoten the consumer digicam can't set to f/16 or smaller.

  9. #9

    Default

    Originally posted by ckiang
    Looks like your lens is not very clean, which is probably what caused the round spots.

    Regards
    CK
    other shoots using Aperture P or Shutter or Manual are ok, even with long exposure, onli using Auto Night setting then i get to see this

    attach a pic using AP taken at the same time, with 10secs exposure


    is it still related to dirty lens??
    Last edited by hong; 25th March 2002 at 10:36 PM.

  10. #10
    Newbie0001
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    Hong, I suspect that it is because of the filter.
    Or you can try to shift your camera a bit to avoid those flare (see whether it works or not) sometimes I also get this kind of photos also.

  11. #11
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    hong, may I use your pic? I circled some problem areas in case others misunderstood what you meant....

    Check out my wildlife pics at www.instagram.com/conrad_nature

  12. #12

    Default

    Originally posted by Newbie0001
    Hong, I suspect that it is because of the filter.
    Or you can try to shift your camera a bit to avoid those flare (see whether it works or not) sometimes I also get this kind of photos also.
    which camera are you using??? S30 do not allow me to attach any filters

  13. #13
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    Originally posted by hong


    other shoots using Aperture P or Shutter or Manual are ok, even with long exposure, onli using Auto Night setting then i get to see this

    attach a pic using AP taken at the same time, with 10secs exposure

    is it still related to dirty lens??
    Hmm... that's a bit strange then. But being a 10s exposure, it also means that the aperture is smaller, so the picture itself is also sharper, as you can see.

    Your original posts sure look like a combination of dust particles on the lens and flare from nearby lights.

    Regards
    CK

  14. #14

    Default

    Originally posted by mpenza
    hong, may I use your pic? I circled some problem areas in case others misunderstood what you meant....
    yup those are the ones i am refering to?? any idea what's wrong??

  15. #15

    Default

    Originally posted by ckiang


    Hmm... that's a bit strange then. But being a 10s exposure, it also means that the aperture is smaller, so the picture itself is also sharper, as you can see.

    Your original posts sure look like a combination of dust particles on the lens and flare from nearby lights.

    Regards
    CK
    attached another pic taken same time using same aperture of F2.8 with 4secs exposure


    isit still dirty lens?? if yes i may want to bring to canon customer services

  16. #16
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    Originally posted by ckiang


    Your original posts sure look like a combination of dust particles on the lens and flare from nearby lights.

    Regards
    CK
    some people have very clean lens but still get the same "artefacts" though. It's a weird phenomenon. could it be reflection within the camera (between different pieces of glass or even between some internal parts)?
    Check out my wildlife pics at www.instagram.com/conrad_nature

  17. #17

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    Originally posted by mpenza


    some people have very clean lens but still get the same "artefacts" though. It's a weird phenomenon. could it be reflection within the camera (between different pieces of glass or even between some internal parts)?
    i post the 2 same identical photos just now, look again, 2 pics taken @ same time but with white dots @ different locations..

  18. #18
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    Originally posted by mpenza


    some people have very clean lens but still get the same "artefacts" though. It's a weird phenomenon. could it be reflection within the camera (between different pieces of glass or even between some internal parts)?
    Possible. But I don't use Canon, so ....

    I only know I have similar problems on my Coolpix 950 when the lens is not so clean, so I thought it should be the same.

    Regards
    CK

  19. #19
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    Originally posted by fcpga
    see here,

    http://www.dpreview.com/reviews/read...dkey=canon_s30

    http://www.dpreview.com/reviews/read...dkey=canon_s40

    it doesn't appear on every shot, but maybe 1 in 6-7. quite annoying.

    Even some people in this forum and hardwarezone. Just do a search.

    Don't understand why people still swear by Canon. But I will never ever buy a Canon.
    I C. IS that why you change your avatar back to Oly C2040.

    Can I assume that you are not aware of this problem before you buy your S40? Other wise you wouldn't have bought it if you have read the discussion in forum?

  20. #20

    Default

    Originally posted by ckiang


    Possible. But I don't use Canon, so ....

    I only know I have similar problems on my Coolpix 950 when the lens is not so clean, so I thought it should be the same.

    Regards
    CK
    but how come for this camera, the white dots appear @ different locations??

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