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  1. #1
    Join Date
    Sep 2005
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    England
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    Cool HDR with exposure bracketing

    I've only just heard about this cool thing called High Dynamic Range (HDR) photography, which basically involves merging overexposed with underexposed images to get a better dynamic range. Examples aplenty on Flickr. Here's one I particularly like (click for bigger):


    What I want to know is, has anyone tried HDR using the auto exposure bracketing feature on a compact Canon camera (especially the S2 which I have)? This is something I'd quite like to try, but not sure if I'm willing to cough up for expensive software yet though.

  2. #2
    Join Date
    Mar 2006
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    2,162
    I dont like the way the S2 does bracketing. You can do shots similar but you need fixed subjects becuause of how it works. I have never owned an SLR but i read that they can do bracketing os somthing after one image is taken. I would prefer this.

    Like say you take a shot and the first one is how you want, the S2 then takes another shot over exsposed then under using the flash again and clicking the shutter again 2 times. This can be a problem with moving objects. It could be good but i dont see how it can be used with bracketing. I mean why does it need 2 more shots? i set the camera to -2 for the under exsposed shot and +2 for the over exsposed so why does it need 2 more shots when it already knows what the image needs? why cant it just make a 2 copys of the original image and alter the exsposure saving it to the card?

    SLR cameras do it all internaly (i think) or else they do the editing with the raw data.

    You need a good eye for that kind of stuff also, you need to know what to leave under and over esposed to make the shot look good. I dont have an eye for that so all my image ive tried look like crap.
    My camera gear Found on e-bay.

  3. #3
    Join Date
    Jun 2006
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    10
    DSLRs do have an advantage, because they can shoot in RAW format, in which you can always change exposure value from -2 to +2 with little or no posterization and quality loss. But it's still recommended to bracket the exposure, rather than shooting a single RAW image, because with bracketing you'll always capture more details.

    Here are some of my experiments with HDR on S3 IS (via bracketing):






  4. #4
    Join Date
    Jun 2006
    Posts
    180
    Quote Originally Posted by DSent
    DSLRs do have an advantage, because they can shoot in RAW format, in which you can always change exposure value from -2 to +2 with little or no posterization and quality loss. But it's still recommended to bracket the exposure, rather than shooting a single RAW image, because with bracketing you'll always capture more details.

    Here are some of my experiments with HDR on S3 IS (via bracketing):





    Wow, "posterization", say that 10 times fast . What does it mean?

    Lots of P&S's shoot RAW, and some bracket exposure (3 quick shots), same as DSLRs. Of course, DSLR has more dynamic range.

    BTW: Can't see the images.
    Last edited by Gopher; 06-29-2006 at 09:39 PM.

  5. #5
    Join Date
    Jun 2006
    Posts
    10
    Quote Originally Posted by Gopher
    Wow, "posterization", say that 10 times fast . What does it mean?

    Lots of P&S's shoot RAW, and some bracket exposure (3 quick shots), same as DSLRs. Of course, DSLR has more dynamic range.

    BTW: Can't see the images.
    Posterization - http://en.wikipedia.org/wiki/Posterization

    Btw, try different links:
    http://www.deviantart.com/view/35436754/
    http://www.deviantart.com/view/35329189/
    http://www.deviantart.com/view/35182927/

  6. #6
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    Mar 2006
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    A good example of posterization = digital cable...
    My camera gear Found on e-bay.

  7. #7
    Join Date
    Jun 2006
    Posts
    10
    Quote Originally Posted by BowerR64
    A good example of posterization = digital cable...
    What's that again?

  8. #8
    Join Date
    Mar 2006
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    2,162
    Did you look at the examples of the description? thats what digital cable does. It either is digital distortion, the cable box has a poor processor or the technology is just not up to par but thats what alot of digital channels look like where there is fast action.
    My camera gear Found on e-bay.

  9. #9
    Join Date
    Sep 2005
    Location
    England
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    25
    Some really nice shots from DSent back there. Well I finally had a shot at it and I'm quite pleased with the results...


    Shows that you don't necessarily need a fancy DSLR to do this kind of thing.

  10. #10
    Join Date
    Mar 2006
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    2,162
    This shot was kinda done with a bracketing technique. The first shot was done with good lighting, and one shot with no lighting.

    My camera gear Found on e-bay.

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