• DonaldBpanorama_fish_eye
    2378 posts
    2 years ago

    2 screen shots which one is the raw and why does it matter

    Screenshot 2023-04-13 142253.jpg

    Screenshot 2023-04-13 142203.jpg

    Screenshot 2023-04-13 142253.jpg

    JPG, 25.0 KB, uploaded by DonaldB 2 years ago.

    Screenshot 2023-04-13 142203.jpg

    JPG, 26.7 KB, uploaded by DonaldB 2 years ago.

  • JimKassonpanorama_fish_eye
    1738 posts
    2 years ago

    I don’t know that either of those is a histogram of the raw image data. How did you make them?

  • DanHasLeftForumhelp_outline
    4254 posts
    2 years ago

    Those histograms could be from anywhere and not from an actual raw file.

    Attach the raw file you used that belongs to either of those histograms so that anyone can use something like RawDigger to output the real raw histogram

  • IanSForsythpanorama_fish_eye
    216 posts
    2 years ago

    That is not a raw histogram, it is a histogram of a raw file converted into working file. Things like the color space, white balance and even base line exposure has been add to the file and not giving you are real idea as to how the raw file looks.

    Here is an image shown in a raw converter
    photos.smugmug.com/Temp/Temp/i-smFhMfF/0/191cfef1/XL/redwing%20clipping-XL.jpg
    and here is what the raw data looks likes

    photos.smugmug.com/Temp/Temp/i-pGVMnXJ/0/4af5f5a6/XL/raw%20redwing-XL.jpg

  • DonaldBpanorama_fish_eye
    2378 posts
    2 years ago

    the raw loaded into ACR and the other loaded back into camera raw after conversion to PSD file from photoshop

  • DonaldBpanorama_fish_eye
    2378 posts
    2 years ago

    [/quote]

  • DonaldBpanorama_fish_eye
    2378 posts
    2 years ago

    so how do you load a raw file into ACR

  • DonaldBpanorama_fish_eye
    2378 posts
    2 years ago

    so why is you old version of ACR any different than my latest version ?

  • DonaldBpanorama_fish_eye
    2378 posts
    2 years ago

    Screenshot 2023-04-13 152253.jpg

    Screenshot 2023-04-13 152253.jpg

    JPG, 335.6 KB, uploaded by DonaldB 2 years ago.

  • IanSForsythpanorama_fish_eye
    216 posts
    2 years ago

    Just as you would normally, but the histogram is the end product of what the raw converted has edited and does not represent the raw data.
    Much of what is shown within the converter has several hidden processing done to bring the image into the correct tonal range. This would be the base line exposure.
    Next there is WB this is a multiplier that is applied to the 3 color channels and depending on the illuminate one or more channels may have be under exposed by more than a stop and not shown in the raw converter

  • DanHasLeftForumhelp_outline
    4254 posts
    2 years ago

    You clearly do not understand what a raw histogram represents.

    Opening a raw file in ACR or any raw converter demosaics the raw data, applies the white balance to the raw data and probably other things as well.

    It seems you are no more a professional photographer than someone who has picked up a camera for the very first time.

    A raw histogram is a histogram of the actual raw data before it has been processed into an actual image.

  • IanSForsythpanorama_fish_eye
    216 posts
    2 years ago

    It is not but it does not show you the raw data
    Looking at the raw digger histogram you show above does this resemble how it appears in your raw converter?
    Why is the green channel a stop bellow clipping and in the raw converter histogram it is not, and why is the red is nearly 3 stops from clipping?
    Why is the red channel not even with the Blue and green as it is shown in the raw converter histogram?

  • AlainCh2panorama_fish_eye
    535 posts
    2 years ago

    HaHummmmm

  • DonaldBpanorama_fish_eye
    2378 posts
    2 years ago

    how close do you think the raw digger histogram is to the in camera histogram ?

  • DonaldBpanorama_fish_eye
    2378 posts
    2 years ago

    would hold your tongue before you swallow it

  • DanHasLeftForumhelp_outline
    4254 posts
    2 years ago

    Attach the actual raw file to a post because you obviously have no idea what a raw histogram actually is and seem to be trying to cover that fact up by making things up as you go along :-)

    Trying to pass off the ACR histogram as the raw histogram is laughable.

  • DonaldBpanorama_fish_eye
    2378 posts
    2 years ago

    the conversation isnt over yet ,the punch line is yet to come.

  • DonaldBpanorama_fish_eye
    2378 posts
    2 years ago

    i posted the raw digger histogram.