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Histogram - The understanding of

  • 08-05-2009 10:40am
    #1
    Trev M
    Closed Accounts Posts: 1,840 ✭✭✭


    Hi All,

    I thought Id share a link, the histogram issue had been bugging me for a while and as a noob with so much info to take on board it took a while to get round looking into it.

    With sound engineer head on Im very familiar with "Audio clipping", and had a fair idea what the purpose of the Histogram was, this article proved pretty good giving some insight.

    http://www.luminous-landscape.com/tutorials/understanding-series/understanding-histograms.shtml

    Interesting the parallels with audio, rather obvious too when you actually think about it :) .

    All the best
    Trev


Comments

  • #2
    dazftw
    Registered Users, Registered Users 2 Posts: 5,728 ✭✭✭dazftw


    The only thing I know about a hisogram is: if it bumps up on the righthand side before the end your in good shape with your exposure!

    I read that a few years ago.. I think it was even on the luminous landscapes site there!

    Network with your people: https://www.builtinireland.ie/



  • #3
    Paulw
    Registered Users, Registered Users 2 Posts: 13,381 ✭✭✭✭Paulw


    dazftw wrote: »
    The only thing I know about a hisogram is: if it bumps up on the righthand side before the end your in good shape with your exposure!

    Not always the case.

    It really depends. A dark image, should be more to the dark side (left side). A bright image should be more to the other side (right side).

    A balanced image should be more balanced. :D

    There is no right/wrong histogram, it will totally depend on the scene.


  • #4
    dazftw
    Registered Users, Registered Users 2 Posts: 5,728 ✭✭✭dazftw


    yeah actually your right I make it sound like if it bumps up on the right hand side "only"

    Network with your people: https://www.builtinireland.ie/



  • #5
    snellers
    Closed Accounts Posts: 465 ✭✭snellers


    If you have parts falling off the right hand side it means you will have pure white in your picture (likely to have lost any detail in it...in other words blown the pic) ....equally dropping off the left is pure black....

    my understanding is yes of course different pics have different weighting on the histogram (some more to one side than the other) however the aim is to not have data dropping off either side......your tonal range should generally be within the confines of the screen (apart from exceptions to the rule I'm sure someone will mention)

    unless I am going mad of course.....!


  • #6
    Paulw
    Registered Users, Registered Users 2 Posts: 13,381 ✭✭✭✭Paulw


    Unless you're shooting silhouette or High Key images. :D

    That's the thing, in some instances, you will actually want the image to be very dark, or very bright.

    A sunset can be very dark, shooting show can be very bright.

    There is no right/wrong, it's a matter of understanding the light, and what you want the photo to show.


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