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Thread: Exposure

  1. #1
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    Default Exposure

    hi all, how to adjust exposure on a dslr cams? is it by the shutter speed or any other adjustments needed? Another ques...what is raw image? what does it do and how to process it? thks...

  2. #2

    Default Re: Exposure

    Quote Originally Posted by amsyari
    hi all, how to adjust exposure on a dslr cams? is it by the shutter speed or any other adjustments needed? Another ques...what is raw image? what does it do and how to process it? thks...
    you can set the Av and Tv by turning the dials until the meter is zeroed. a raw image is a format used by high end SLR cameras to produce high quality images. just like JPEG, PNG, or BMP.. it is just a format name. you can convert it using photoshop and save it to JPEG to process, and print it.

  3. #3

    Default Re: Exposure

    exposure is determined by 3 factors on a dSLR. shutter speed, aperture, and ISO.
    shutter determines how long the shutter is open for - longer means more light. aperture means how large the opening is, and ISO is film sensitivity - the higher the ISO, the more sensitive.

    if you want to read more, there are plenty of tutorials and explanations on the net...

    as for RAW. this is the format that the camera stores the information take in.it doesnt do anything in itself. but in order to print email the image etc, you will need to convert it using a raw converter.. any camera that comes with RAW ability, should have a software converter as part of the package. photoshop can also convert raw.

  4. #4
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    Default Re: Exposure

    but beware of high iso, will have noise problem
    D70s-er Since 2005

  5. #5
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    Default Re: Exposure

    Sound like you need some basic photography books or basic photography courses. Main thing to take note is metering, shuttler speeds, aperture and sensor setting or films choice. These basic make or break a picture.

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  7. #7
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    Default Re: Exposure

    Read up Understanding Exposure by Bryan Peterson

  8. #8
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    Default Re: Exposure

    maybe this can help you out....

    Very clear explaination (It even covers iso, aperture and dof)
    http://www.canon.co.jp/Imaging/enjoydslr/index.html

    Hope it helps .

  9. #9
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    Default Re: Exposure

    [(camera shutter speed x lens aperture) / camera ISO] + white balance => exposure.

  10. #10
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    Default Re: Exposure

    Quote Originally Posted by ronaldjace
    [(camera shutter speed x lens aperture) / camera ISO] + white balance => exposure.
    Are you sure that is the correct formula? Where you got it?

    Regards,
    Arto.

  11. #11

    Default Re: Exposure

    Quote Originally Posted by ronaldjace
    [(camera shutter speed x lens aperture) / camera ISO] + white balance => exposure.
    erm, care to explain how this formula works? first time i see it thanks!

  12. #12
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    Default Re: Exposure

    Quote Originally Posted by ronaldjace
    [(camera shutter speed x lens aperture) / camera ISO] + white balance => exposure.
    PRO sia...

    School holidays just started and 'things' are starting to appear liao

  13. #13
    Moderator Francis247's Avatar
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    Default Re: Exposure

    Quote Originally Posted by ronaldjace
    [(camera shutter speed x lens aperture) / camera ISO] + white balance => exposure.

    Not sure where you get this formula.

    Anyway, just dig up my old post regarding exposure, hope can help TS to understand more about it. http://forums.clubsnap.org/showpost....35&postcount=8

    The relationship between shutter speed and aperture can be imagine as a calculation on the amount of volume, in photography sense, it is the amount of light.

    If your aperture is big (f1.8) and your shutter speed is slow (8"), you get a large volume which in turns a large amount of light which might lead to overexposure. On the other hand, if your aperture is small (f22) and your shutter speed is fast (1/8000), you get a very small volume which means a small amount of light which might lead to underexposure. The aperture also controls the Depth Of Field. The bigger the aperture (f1.8), the shallower the DOF. The smaller the aperture (f22), the greater depth of field.

    For ISO, the higher the ISO, the more reactivity it is to light, but at the expense of noise. So if you combine the 3 factors together, it is very much the fundamental of photography.
    Last edited by Francis247; 7th June 2006 at 08:37 PM.
    莫问前程有愧,只求今生无悔. Time pasts, Places changed, Beauty faded, what is left are Photos of Memories…

  14. #14
    Moderator nightwolf75's Avatar
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    Default Re: Exposure

    Quote Originally Posted by ronaldjace
    [(camera shutter speed x lens aperture) / camera ISO] + white balance => exposure.
    bull.
    If Life worked on auto mode then manual mode for photography would have never existed.” ― Deeksha Mittal

  15. #15

    Default Re: Exposure

    Quote Originally Posted by nightwolf75
    bull.
    either that or hes einstein in disguise
    Photo Album - Photo Album

  16. #16
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    Default Re: Exposure

    Quote Originally Posted by nightwolf75
    bull.
    Shhh....

    He is pro, look his signature:
    D1H + 24mm f2.8 + 35mm f/2
    50mm f1.8 + 80-200mm f2.8


    I wonder if pro have secret formula for exposure .

    Regards,
    Arto.

  17. #17
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    Default Re: Exposure

    Quote Originally Posted by nightwolf75
    bull.
    Psst.... it's school holidays.

  18. #18

    Default Re: Exposure

    ya must be pro, his profile says:

    "Occupation:
    freelance fotog"
    Photo Album - Photo Album

  19. #19
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    Default Re: Exposure

    if u do not know or r unsure, pls do not post & confuse the poor fella.

    makes things worse.
    blind leading the blind...

  20. #20
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    Default Re: Exposure

    Quote Originally Posted by markccm
    if u do not know or r unsure, pls do not post & confuse the poor fella.

    makes things worse.
    blind leading the blind...
    Refer to post #17

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