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Thread: Size problem !!

  1. #1
    Join Date
    Nov 2012
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    Default Size problem !!

    Can anyone please help me. I use a canon 400d for pottering about with but it seems to have developed a fault. The image setting is on L ( as its always been ) yet the file size has plummeted from 6 - 9mb down to now all pictures are around 3mb. The quality of the picture appears to be unchanged but I don't print above A4 anyway. I'm just wondering if something is on its way out and so I start searching for a replacement, or i'm doing something wrong.
    I hope someone can help me.

  2. #2
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    Default

    take a look at the exif info and see what it says the file size is. also down load all pictures and then use the camera to reformat the card

  3. #3
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    Default

    Hi, thanks for replying.
    Tried all but just taken 50 pics on local beach and still giving me only 2.5 - 3.2 mb.
    Changed the card and reformatted it with the camera
    Exif shows on one of the pics:

    File
    Comment
    Camera
    Make Canon
    Model Canon EOS 400D DIGITAL
    Orientation Upper Left
    X resolution 72/1
    Y resolution 72/1
    Resolution unit inches
    Date/time 14/06/2013 16:20:46
    Primary chromaticities (0.64,0.33,0.21,0.71,0.15,0.06)
    YCbCr coefficients (0.299,0.587,0.114)
    YCbCr positioning co-sited
    Image
    Image description
    Artist
    Whitepoint 0.313,0.329)
    Copyright
    Exposure time 1/30 s
    F-number f/18
    Exposure program Aperture priority
    ISO speed ratings ISO 100
    Date/time original 14/06/2013 16:20:46
    Date/time digitized 14/06/2013 16:20:46
    Component config YCbCr
    Shutter speed value 1/30 s
    Aperture value f/18
    Exposure bias value 0.00 eV
    Metering mode Pattern
    Flash Flash did not fire, compulsory flash mode
    Focal length 70 mm
    User comment
    Colorspace Uncalibrated
    Pixel X dimension 3888
    Pixel Y dimension 2592
    Interoperability IFD 5902
    Focal plane X res. 3888000/877
    Focal plane Y res. 2592000/582
    Focal plane res. unit inch
    Custom Rendered Normal process
    Exposure mode Auto bracket
    White balance Auto white balance
    Scene capture type Standard
    Miscellaneous
    Exif version 2.21
    FlashPix version 1.0
    White balance Auto
    Flash bias 0.00 EV
    Canon Maker Notes
    Macro mode Normal
    Flash mode Flash not fired
    Continuous drive mode Continuous
    Focus mode AI Focus
    Image size Large
    Easy shooting mode Manual
    Contrast Normal
    Saturation Normal
    Sharpness Unknown
    ISO Unknown
    Metering mode Evaluative
    AF point selected Unknown
    Exposure mode Av priority
    White balance Auto
    Flash bias 0.00 EV
    Image type Canon EOS 400D DIGITAL
    Firmware version Firmware 1.0.4
    Owner name unknown
    Camera serial number 560118830

    I could really appreciate any ideas
    many regards
    martin

  4. #4
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    Default

    to be honest i havent any ideas but try shooting in RAW and see what happens

  5. #5

    Default

    ..try taking the same image with two different resolution settings on the camera. Do the file sizes both differ as you expect?

    Is there a further resolution on your 400D instead of 'large' such as superfine or similar.
    As a resort it might be worthwhile updating the firmware.
    Not answers just suggestions!!! regards

  6. #6

    Default

    ..just spotted it is on continuous drive and AI focus. In order to keep up frame rate the camera might be limiting the file size and therefore the write to speed. Try turning this off. Regards

  7. #7
    Join Date
    Jan 2013
    Location
    Nottingham
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    Default

    Pixel X dimension 3888
    Pixel Y dimension 2592
    your pixel size above is correct for large file on a 400D ........ 3888 pixels X 2592 pixels = 10,077,696 just a tad over 10 million pixels

    It really is down to how much content/information is in the shot, If the shot is very busy you will get more megapixels but if there is not a lot of content or colour variation you get less megapixels.

    I use a 60D @ 18 million pixel in RAW some shots are 35 megabytes some as low as 20 megabytes
    Last edited by mark2002; 24-07-13 at 06:06 PM.

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