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Thread: Tone mapping

  1. #1

    Default Tone mapping

    Hi all
    I'm curious as to how tone mapping is acheive after creating HDR image from various exposure.

    http://www.hdrsoft.com/examples.html

    I've read the above article but still yet unable to get my mind settle on what is it about.
    Most Importantly,is it necessary for HDR to be created first before tone mapping can be done?
    What software do I need and what camera is HDR/Tone Mapping limited to?[Or do i just need a body which does multiple bracket exposure?]

  2. #2
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    Default Re: Tone mapping

    Quote Originally Posted by yamapi View Post
    Hi all
    I'm curious as to how tone mapping is acheive after creating HDR image from various exposure.

    http://www.hdrsoft.com/examples.html

    I've read the above article but still yet unable to get my mind settle on what is it about.
    Most Importantly,is it necessary for HDR to be created first before tone mapping can be done?
    What software do I need and what camera is HDR/Tone Mapping limited to?[Or do i just need a body which does multiple bracket exposure?]
    from wat i know.. tone mapping is apply when the image is generate out. you can try out photomatrix..
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  3. #3

    Default Re: Tone mapping

    Quote Originally Posted by crocs View Post
    from wat i know.. tone mapping is apply when the image is generate out. you can try out photomatrix..
    How much will the software cost?
    Any rough idea?

  4. #4
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    Default Re: Tone mapping

    u can download a copy of the photomatix

    http://www.hdrsoft.com/

    trial version.
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  5. #5

    Default Re: Tone mapping

    Quote Originally Posted by yamapi View Post
    Hi all
    I'm curious as to how tone mapping is acheive after creating HDR image from various exposure.

    http://www.hdrsoft.com/examples.html

    I've read the above article but still yet unable to get my mind settle on what is it about.
    Most Importantly,is it necessary for HDR to be created first before tone mapping can be done?
    What software do I need and what camera is HDR/Tone Mapping limited to?[Or do i just need a body which does multiple bracket exposure?]
    1. merges various exposures to generate something with all the details, be it highlight or shadow detail. how it turns out depends on how you do your tone mapping. there will be a slight softening of image in most cases though.

    2. from what i understand, you need to generate hdr, but then again, i've seen flickr pictures where people claim that they have done tone mapping from jpg. not sure how this is done, but i suppose a similar effect could be achieved by pushing the shadow/highlight tool in photoshop, from what i've seen.

    3. you can use photoshop or photomatix, both give different sorts of results, see your preference. i prefer photomatix.

    4. hdr can be generated from single raw.

    5. any camera can do it, even p&s, what you need to do is keep the camera in the relatively same position for all the exposures, so usually one would want a tripod to go as well.

  6. #6
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    Default Re: Tone mapping

    Quote Originally Posted by night86mare View Post
    1. merges various exposures to generate something with all the details, be it highlight or shadow detail. how it turns out depends on how you do your tone mapping. there will be a slight softening of image in most cases though.

    2. from what i understand, you need to generate hdr, but then again, i've seen flickr pictures where people claim that they have done tone mapping from jpg. not sure how this is done, but i suppose a similar effect could be achieved by pushing the shadow/highlight tool in photoshop, from what i've seen.

    3. you can use photoshop or photomatix, both give different sorts of results, see your preference. i prefer photomatix.

    4. hdr can be generated from single raw.

    5. any camera can do it, even p&s, what you need to do is keep the camera in the relatively same position for all the exposures, so usually one would want a tripod to go as well.
    hi bro, mind sharing how to generate HDR using 1 raw image file?
    Olympus E-P1 | 17mm
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  7. #7

    Default Re: Tone mapping

    Quote Originally Posted by crocs View Post
    hi bro, mind sharing how to generate HDR using 1 raw image file?
    in photomatix very easy

    just open the raw file, as long as the version is compatible with your raw file it will automatically generate hdr, then you can tonemap

    for photoshop , just output different ev from your raw image, save them as jpg, then merge

    the trouble is, all these is "fake hdr".. will have enhanced details, dynamic range SLIGHTLY better than one jpg photo.. because raw file got more info.. but that's about it.. for more extreme tonal ranges, need more than hdr from raw

  8. #8

    Default Re: Tone mapping

    Ok how would i merge the different exposure into a single frame?[i suppose that's what they meant]
    How would i go about doing that in photoshop premier element 5?

  9. #9

    Default Re: Tone mapping

    Quote Originally Posted by yamapi View Post
    Ok how would i merge the different exposure into a single frame?[i suppose that's what they meant]
    How would i go about doing that in photoshop premier element 5?
    sorry, don't think elements will have it

    not even sure what photoshoppremierelement is

    get photoshop cs 2 it will have it, and i suppose cs 3 would have kept it

    alternatively, try dynamic photo hdr, just google for it and it should be the first item on the search list. it's a free program, but leaves watermark like photomatix. much less conscpicuous watermark though. unless you pay

    by the way, the program will do it for you, you ahve no control, that's the problem.

    if you want more natural looking results, go find out more about digital blending.. i suppose it uses layering extensively with photoshop. probably very time consuming though
    Last edited by night86mare; 20th March 2008 at 01:23 AM.

  10. #10

    Default Re: Tone mapping

    Quote Originally Posted by night86mare View Post
    sorry, don't think elements will have it

    not even sure what photoshoppremierelement is

    get photoshop cs 2 it will have it, and i suppose cs 3 would have kept it

    alternatively, try dynamic photo hdr, just google for it and it should be the first item on the search list. it's a free program, but leaves watermark like photomatix. much less conscpicuous watermark though. unless you pay
    Do s'pore shops carry this product?
    The idea of their watermark on the pictures irks me

  11. #11

    Default Re: Tone mapping

    Quote Originally Posted by yamapi View Post
    Do s'pore shops carry this product?
    The idea of their watermark on the pictures irks me
    you have to download online, then pay with credit card or something

    usual modus operendi for this sort of random software..

    if you're talking about photoshop cs2.. ehehe, don't know if shops still carry it, but you should be able to get cs3.

  12. #12

    Default Re: Tone mapping

    Quote Originally Posted by night86mare View Post
    you have to download online, then pay with credit card or something

    usual modus operendi for this sort of random software..

    if you're talking about photoshop cs2.. ehehe, don't know if shops still carry it, but you should be able to get cs3.
    CS3 costs a bomb


    ok thanks for the advices

  13. #13
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    Default Re: Tone mapping

    Quote Originally Posted by night86mare View Post
    in photomatix very easy

    just open the raw file, as long as the version is compatible with your raw file it will automatically generate hdr, then you can tonemap

    for photoshop , just output different ev from your raw image, save them as jpg, then merge

    the trouble is, all these is "fake hdr".. will have enhanced details, dynamic range SLIGHTLY better than one jpg photo.. because raw file got more info.. but that's about it.. for more extreme tonal ranges, need more than hdr from raw
    thanks for sharing
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  14. #14

    Default Re: Tone mapping

    Quote Originally Posted by night86mare View Post
    in photomatix very easy

    just open the raw file, as long as the version is compatible with your raw file it will automatically generate hdr, then you can tonemap

    for photoshop , just output different ev from your raw image, save them as jpg, then merge

    the trouble is, all these is "fake hdr".. will have enhanced details, dynamic range SLIGHTLY better than one jpg photo.. because raw file got more info.. but that's about it.. for more extreme tonal ranges, need more than hdr from raw
    I think a better way would be to use camera raw to open raw image in 16-bit mode and apply photomatix tone mapping. In this case you directly give linear intensity to the tone mapper, rather than ask adobe photomerge to _guess_ the linear intensity.

  15. #15

    Default Re: Tone mapping

    Quote Originally Posted by wuyongzheng View Post
    I think a better way would be to use camera raw to open raw image in 16-bit mode and apply photomatix tone mapping. In this case you directly give linear intensity to the tone mapper, rather than ask adobe photomerge to _guess_ the linear intensity.
    i don't even know what you are talking about

    my photomatix program is separate from photoshop, it's not the plug-in.. is there even a plug-in?

    sorry, not a very technical person, so long as the program does what i want it to do i'm happy, no need to go into how the program works, etc..

  16. #16

    Default Re: Tone mapping

    Quote Originally Posted by night86mare View Post
    i don't even know what you are talking about

    my photomatix program is separate from photoshop, it's not the plug-in.. is there even a plug-in?

    sorry, not a very technical person, so long as the program does what i want it to do i'm happy, no need to go into how the program works, etc..
    Sorry for having confused you. I meant the photomatix photoshop plugin.

    That's just my preference on single raw HDR workflow. Frankly, I have no idea how good (or bad?) is it comparing to other workflow.

  17. #17
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    Default Re: Tone mapping

    Quote Originally Posted by yamapi View Post
    How much will the software cost?
    Any rough idea?
    Current exchange rate, S$146. It is selling @ US$99

    http://www.hdrsoft.com/

    And yes, there is a Plug-In (For PS) and Stand-along software (Pro)
    Last edited by danmic; 21st March 2008 at 05:29 PM.
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