1-Image HDR

Discussion in 'Photographic Discussions' started by Alpha, Dec 30, 2007.

  1. Alpha

    Alpha Troll Extraordinaire

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    By definition there is no such thing. HDR stands for High Dynamic Range. Every photograph has a discreet dynamic range. It is possible to reduce, but not expand it during post-processing. Analogous to "single-image HDR" would be making an infrared image from a panchromatic one during processing, which of course is non-sequitur.
     
  2. usayit

    usayit No longer a newbie, moving up!

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    Ok.. so whats the question or the topic of this thread?
     
  3. abraxas

    abraxas No longer a newbie, moving up!

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    multiple range tone mapping
     
  4. Sideburns

    Sideburns TPF Noob!

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    I think what Max's point is...is that you can't make a true HDR from one image. Lots of people think they can, or think it's almost the same. It really isn't.
     
  5. Alpha

    Alpha Troll Extraordinaire

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    Exactly.

    Throwing three raw "exposures" of the same image into an HDR program is simply another way of manipulating shadow and highlight detail. It is less tedious, though also less precise, than manually doing such manipulations using adjustment layers.
     
  6. Trenton Romulox

    Trenton Romulox TPF Noob!

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    You can make HDR-like effects using Photoshop can't you? I took one exposure and duplicated layers and ran high mapping or something over it and then blended the layers and it looked almost HDR-like. I'm a total PS-novice and really have no idea what I'm talking about. I don't think I contributed to this thread much.
     
  7. Alpha

    Alpha Troll Extraordinaire

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    I think perhaps you're talking about layer masks and high-pass filtering.
     
  8. Joves

    Joves No longer a newbie, moving up!

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    Yeah Ive seen far too many of the quote/unquote HDRs and, they are always terrible, Im really not a fan of HDR but, I can appreciate a well done one.
     
  9. Garbz

    Garbz No longer a newbie, moving up!

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    There is no question it's a discussion.

    I have nothing against these "one image HDRs" providing people don't call it that. I agree with max. Call it what it is. It's an image with tonemapping applied. Nothing more, nothing less.

    You most definitely don't need 3 jpegs each with different brightnesses to do it. No you don't get extra range from using RAW files. And to side with Joves I've only seen 2 or 3 HDRs in the past year which either looked incredibly realistic with the extra dynamic range, or which looked artistically pleasing (woodsac's images).
     
  10. leopardforest

    leopardforest TPF Noob!

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    For HDR images is it better to have more than 3 exposures if possible or is it just pointless?
    I have tried some via changing the exposure in RAW like Max was talking about and that did not work, but I also tried one HDR using multiple exposures (5 separate exposures) but the final HDR did not seem any different than the normal exposure, what gives?
     
  11. Trenton Romulox

    Trenton Romulox TPF Noob!

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    Yeah! That's it. I tried it once, it came out like hell, but I figure with some practice on PS I could get pretty good.
     
  12. Jeff Canes

    Jeff Canes No longer a newbie, moving up!

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    why is that not the same think?
     

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