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Thread: Exposure doubts

  1. #1

    Default Exposure doubts

    I wish to ask...when i am doing my shooting i notice sometimes some pictures taken are too bright(look fogy or pale white) and some are not .. is that normal? I always use AV mode and the exposure is zero..
    500D/50mm f1.4/90mm macro/17-55mm/EX580 II
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  2. #2

    Default Re: Exposure doubts

    what metering were u using? spot? matrix?
    PortFolio
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  3. #3

    Default Re: Exposure doubts

    evaluative metering
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  4. #4
    Senior Member ZerocoolAstra's Avatar
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    Default Re: Exposure doubts

    If the rest of your picture is ok, then the subject is brighter, and hence the metering mode is inappropriate for this application...

  5. #5

    Default Re: Exposure doubts

    every picture seem not constant..but when i look at the histogram..alot of them are come out pretty bright..and have to adjust the tone and brightness..
    500D/50mm f1.4/90mm macro/17-55mm/EX580 II
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  6. #6

    Default Re: Exposure doubts

    Quote Originally Posted by rysouke View Post
    I wish to ask...when i am doing my shooting i notice sometimes some pictures taken are too bright(look fogy or pale white) and some are not .. is that normal? I always use AV mode and the exposure is zero..
    Not enough details provided.

    You could even be experiencing ghosting or flare. Was there any bright lights by the side or in front of you when you shot?

  7. #7

    Default Re: Exposure doubts

    Below are the links to the orginal photo taken :

    Is it due to flare or ghost?
    Last edited by rysouke; 18th April 2010 at 02:32 PM.
    500D/50mm f1.4/90mm macro/17-55mm/EX580 II
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  8. #8

    Default Re: Exposure doubts

    @rysouke
    It happens when the camera meters at the wrong parts and think that the picture is too dark, so it wants to have a longer exposure to compensate for that. In such cases just use exposure compensation to correct it, or use manual mode.

  9. #9
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    Default Re: Exposure doubts

    It's a common problem with entry level Canon models.

    You could change your metering mode to point or centre-averaging and meter the "cliff" with -0.3eV compensation.

  10. #10
    Senior Member ZerocoolAstra's Avatar
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    Default Re: Exposure doubts

    I agree... It's purely a problem with the spot/area where the metering was taken. From the EXIF, there is a huge difference in the shutter speeds (1/100 vs 1/250), accounting for more than 1 stop difference in exposure.

    Someone once mentioned that even if you move the AF selection point on a Canon xxxD, the metering remains at the center.
    Exploring! :)

  11. #11

    Default Re: Exposure doubts

    As per what aspenx replied..is a common problem for entry lvl canon dslr...so for higher grade dslr wont have such problem??

    as i am still trying to figure out how to use manual mode correctly..as i know i can have control over shutter speed and aperture.

    For example, when i take the above landscape shoot i am in Av mode and the AF point i use is the centre one and i am using F5.6-6.3 and i focus the centre part of the picture and the exposure compensation use is EV+/-0 and the camera set the shutter speed for me.

    If i use manual mode, i will still focus use the centre AF and focus the centre part of the picture, i will set the shutter speed and aperture till the exposure compensation is EV+/-0, would the result be the same??
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  12. #12
    Senior Member ZerocoolAstra's Avatar
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    Default Re: Exposure doubts

    it should be the same... barring any unforseen circumstances...

    actually for Nikon, even the entry-level D40 has the metering point following the AF selection point.
    Exploring! :)

  13. #13
    Senior Member Diavonex's Avatar
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    Default Re: Exposure doubts

    Try switching to center-weighted metering; lock metering on the hill and re-compose.

    Last edited by Diavonex; 18th April 2010 at 10:13 AM.

  14. #14
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    Default Re: Exposure doubts

    Quote Originally Posted by rysouke View Post
    As per what aspenx replied..is a common problem for entry lvl canon dslr...so for higher grade dslr wont have such problem??

    ...
    Higher grade cameras have more intelligent evaluative metering systems.
    BUT they are not entirely fool-proof either.

    The suggestions so far work for all cameras since it's just about getting the right settings that you want manually or with compensation.

  15. #15

    Default Re: Exposure doubts

    i see...brightness and expsoure are they the same??

    cause most of my photo taken yesterday...are all too bright after tune down the brightness everything seem ok..
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  16. #16
    Deregistered allenleonhart's Avatar
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    Default Re: Exposure doubts

    Quote Originally Posted by rysouke View Post
    Below are the links to the orginal photo taken :

    - this look pale white..some of the others look like this or even worse.

    - this look ok.

    Is it due to flare or ghost?
    its neither. its the bloody sky which screwed ur metering up. dun believe just go to a beach adn shoot with evaluative. u get the same results.

    use the meter. but dun judge solely on it. laern how to read a histogram and use ur eyes and compensate =.=

  17. #17

    Default Re: Exposure doubts

    ya i also think is the sky...and i want capture details of the sky in the end..all end up so bright..
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  18. #18
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    Default Re: Exposure doubts

    I spot meter the blue part of the sky if that's where I want detail and let the exposure of the other areas fall wherever they might. I have been going to xiao guilin a lot for the past few weeks so I might have met you there

  19. #19

    Default Re: Exposure doubts

    It's not a matter of what camera model or how basic or sophisticated the camera's metering is even though where and how a camera meters does have significant impact on the resulting files.

    It has to do with exposure values and a capturing device's dynamic range - how much bright and dark you can capture without either highlights or shadows go completely white or black.

    The samples you provided also look like they were shot on dull, overcast days. Barring atmospheric factors, they could probably be improved in post if you shot in RAW.

    Read up more on the BASICS of light, exposure and digital cameras if you haven't already done so.

  20. #20

    Default Re: Exposure doubts

    Quote Originally Posted by kaixiang View Post
    I spot meter the blue part of the sky if that's where I want detail and let the exposure of the other areas fall wherever they might. I have been going to xiao guilin a lot for the past few weeks so I might have met you there
    haha..yesterday is my first visit to Xiao Guilin..however i think i will go again as i like the place there and i am looking for a place that i can do shooting for my puppets too...and that place really very suitable..
    500D/50mm f1.4/90mm macro/17-55mm/EX580 II
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