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Thread: What does HDR mean?

  1. #1
    Member nice1888's Avatar
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    Default What does HDR mean?

    Hi all,

    Please tell me what HDR stand for.
    Thank you in advance.

  2. #2
    Senior Member dennisc's Avatar
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    Default Re: What does HDR mean?

    Hot Dog Really...

  3. #3
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    Default Re: What does HDR mean?

    Don't be so mean la... HDR means Human Development Reports.

  4. #4

    Default Re: What does HDR mean?

    Quote Originally Posted by dennisc View Post
    Hot Dog Really...
    Quote Originally Posted by hazmee View Post
    Don't be so mean la... HDR means Human Development Reports.
    They ask u to google it or do the search in this forum lah
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    Senior Member Anson's Avatar
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    Default Re: What does HDR mean?

    HDR = High Dynamic Range

  6. #6

    Default Re: What does HDR mean?

    Nope, is High Dynamic Reduction

  7. #7
    Senior Member Anson's Avatar
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    Default Re: What does HDR mean?

    Quote Originally Posted by DeadEnd View Post
    Nope, is High Dynamic Reduction
    Hahaha...... you want to confuse the TS.....

  8. #8

    Default Re: What does HDR mean?

    HDR = High Dynamic Range, also HDRI = High Dynamic Range Imaging. That's when several identical or near-identical images are taken at different exposures. Then, we use HDRI software to generate HDRI image. Usage eg. interior of flat with backlit window. As the camera is unable to record details cos beyond brightness range of camera. So the net result = u can see the details of the window and not just white space. Therefore, use HDRI to solve this overexposed-cum-underexposed problem in an image.

    Not easy to take different exposures cos if camera moves even slightly, alignment problems will occur resulting in ghosting in final image.

    But if u want to avoid this problem by taking just one image and then using photoshop to vary exposures, and afterwards make a copy of each exposure and then merge the differently exposed images into one, that's NOT TRUE HDRI.

    Soon, we'll be seeing HDR photo sensors in the market..

  9. #9
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    Default Re: What does HDR mean?

    google will really help.. lol~

  10. #10

    Default Re: What does HDR mean?

    Quote Originally Posted by nice1888 View Post
    Hi all,

    Please tell me what HDR stand for.
    Thank you in advance.
    Is it really that hard to type "HDR" into google?
    Alpha

  11. #11
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    Default Re: What does HDR mean?

    maybe it means Help Desk Request... :P or Hard Drive Reformat..lol

    yah.. it stands for High Dynamic Range... its NOT High Definition

    in simple words, its kinda like taking a same image at multiple exposures (eg. -1EV, 0EV, +1EV) and re-combining using HDR Software such as Photomatix. Photoshop also has some features for HDR.
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  12. #12
    Member nice1888's Avatar
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    Default Re: What does HDR mean?

    Got it. Thanks all.

  13. #13
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    Default Re: What does HDR mean?

    Tot it means High Definition Resolution..............
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    Moderator ortega's Avatar
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    Default Re: What does HDR mean?

    i thought it was Hard Disk Rack

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    Default Re: What does HDR mean?

    Quote Originally Posted by nice1888 View Post
    Got it. Thanks all.
    Really? I doubt it...

  16. #16

    Default Re: What does HDR mean?

    Hi, I am new here and have yet to buy my camera.

    Saving up to buy after chinese new year, found this thread useful on explaining how to derive a HDR image, would like to learn more in this forum thanks !

  17. #17
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    Default Re: What does HDR mean?

    I have major difficulty.. I take 3 shots.. different exposure. Use Photomatrix to either create HDR or blend... result sucks!

  18. #18
    Senior Member Anson's Avatar
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    Default Re: What does HDR mean?

    Quote Originally Posted by mrericlee View Post
    I have major difficulty.. I take 3 shots.. different exposure. Use Photomatrix to either create HDR or blend... result sucks!
    Are you using a tripod?

  19. #19
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    Default Re: What does HDR mean?

    Hi Guys,

    All pics taken with timer and tripod with exposure bracketing.

    1st image is HDR generated by Photomatix - Looks horrible... why why why.. please help.

    2,3,4 images are original images.









  20. #20
    Senior Member giantcanopy's Avatar
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    Default Re: What does HDR mean?

    Your final HDR output desired is brighter that any of the three brackets you took. You will get a noisy processed shot since the program will end up pull more details from what ever underexposed shots bracketted.

    Try making one of the brackets more exposed.

    Ryan

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