Colour correction of snow landscapes

Discussion in 'Photoshop' started by Peter, Mar 27, 2011.

  1. Peter

    Peter Guest

    I have lots of pics of snow covered mountains.

    Often there is also haze which messes up the colours.

    Example: http://www.peter2000.co.uk/aviation/locarno/alps3-big.jpg

    However, we all know that snow is meant to be white, so there should
    be an wasy way to fix up the image - the colour balance (I use Auto)
    at least.

    Any suggestions would be much appreciated.

    Currently I remove the haze by using the adjust levels feature and
    then I manually and separately do the r,g,b, sliders; this is normally
    a lot less crude than Auto Levels. But it doesn't do a lot to make
    snow "white".

    I use Photoshop CS3.
     
    Peter, Mar 27, 2011
    #1
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  2. Peter

    Joel Guest

    It's pretty much similar techiqnue I responsed to a gentleman named Pete
    (or Peter I don't remember).

    LEVEL should be the right or good tool *but* you may need tp play with the
    EYEDROPPER a little. Example

    1. Select the WHITE eyedropper from the Level tool

    2. Move the eyedropper to the white area/spot where you like it to be
    whitetest. Click it then the magic should happen.

    3. If it's too white, not white enough, or effect the DARKER area then
    select different spot, or use BLACK eyedropper to control the BLACK

    Hmmm I looked at the header and it's the Peter. I wonder how we can get
    Peter to learn
     
    Joel, Mar 27, 2011
    #2
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  3. Peter

    Peter Guest

    Cannot remember asking this here before. I did ask in a Pentax forum.
    How long ago?
    Oh yes, very clever! Took me a little while to find what you were
    talking about. It is under the adjust levels function, where the three
    eyedropper tools sit side by side. One sets the black, another sets
    the white.
    I don't think it is me.

    Many thanks, anyway.
     
    Peter, Mar 27, 2011
    #3
  4. You know how to fix the tones, but in the future you might consider
    using a proper filter to obviate the second-hand, inferior post
    processing. You cannot fix details that never made it to the sensor. A
    B+W brand 81A filter would help. Put a polarizer under it for even more
    control.
     
    John J Stafford, Mar 27, 2011
    #4
  5. Peter

    Peter Guest

    I use a Hoya Super Pro1 Skylight 1B filter (genuine Ebay :)).

    Doesn't that remove the UV?

    These pics are from a light aircraft - up to 20000ft - via a plastic
    window.

    Do you mean this:

    http://cgi.ebay.co.uk/B-W-67mm-81A-...2829664?pt=Camera_Filters&hash=item53e61b3a60

    I also have a Hoya Pro1 PL-C polarised filter. I used polarised
    filters many years ago with film, to get a very dark blue sky...
     
    Peter, Mar 27, 2011
    #5
  6. Peter

    Joel Guest

    One of the Photoshop forums and just about 1-3 weeks ago.
    Probably not. I usually never look at the header (the poster's name) to
    remember. Also, I remember the previous Pete/Peter seemed to use P&S camera
    or cellphone, the quality of the image was pretty poor and the color was way
    out of wax.
     
    Joel, Mar 28, 2011
    #6
  7. Peter

    Joel Guest

    The answers are.

    1. Yes, you should be able to fix/adjust/change (whatever you want to call
    it) the color/brightness (whatever you want to call it) using few of
    Photoshop's basic command's. LEVEL is one of them *and* you may have to use
    the right command of LEVEL to be able to get what you one.

    2. Many camera owners sometime talking about Polarizer Filter which is a
    good filter for landscape photography. But it may depend on the condition,
    style, as well as the type of Polarizer Filter.

    As you describe the ".. dark blue sky" so I think you can image how the
    filter may do to the SNOW. By looking at the photo I don't think you will
    benefit much or any from the filter.

    And if you do lot of landscape photography then I would suggest you to the
    filter holder Adapter, then get a Polarizer Filter with 2 tones (1) the
    upper part is darker to deal with bright sky (2) the lower part is clear
    (white) to capture the landscape.

    And for future investment you may want to get a LARGE SIZE just incase you
    may use on larger lens in the future. Below is the image of Filter Holder
    and it happens to have the type of filter I mentioned above.

    http://www.flickr.com/photos/hewmatt/2515436256/

    P.S. Years ago when I was using film camera, I had lot of those filters and
    stopped using it when switched to digital camera.
     
    Joel, Mar 28, 2011
    #7
  8. Peter

    Rainer Latka Guest

    On 28.Mar.11 12:53 h, Joel wrote:
    ....
    this plain rubbish. What you're describing is a split density filter.
     
    Rainer Latka, Mar 28, 2011
    #8
  9. Too bad. You cannot recapitulate details that never reach the sensor.
     
    John J Stafford, Mar 29, 2011
    #9
  10. Absolutely true. The poster hasn't a clue what polarization is, or he
    chooses to ignore it.
     
    John J Stafford, Mar 29, 2011
    #10
  11. Peter

    Savageduck Guest

    There is a WB issue, and you haven't said if you shoot RAW or JPEG
    only. I am making the assumption that you only have JPEG's.

    I used your image and used a "Levels" adjustment layer. Then only using
    the "Gray Point" measuring "eyedropper" I looked for a spot which was
    as close to a neutral gray as possible.
    You will not necessarily get a good WB fix by selecting a "White point"
    or "Black Point". Neutral gray is always the better choice.
    The haze you can fix by making contrast adjustments with curves or
    levels adjustment layers.

    If you are shooting RAW, find the image in Bridge. Use the WB tool in
    ACR, and make the WB adjustment. Click on "Done". Now in Bridge select
    all the images with similar lighting characteristics. Then edit->
    Develop Settings -> Previous Conversion, and you have the entire batch
    WB set.

    Here is what I came up with compared with your original:
    < http://homepage.mac.com/lco/filechute/Peter-WB-01w.jpg >
     
    Savageduck, Mar 29, 2011
    #11
  12. Peter

    Peter Guest

    Many thanks.
    I have only Jpegs but can shoot raw (Pentax K5).
    I am not sure what an adjustment layer is (need to go on a Photoshop
    course) but I take you you refer to the middle one of the 3
    eyedroppers in the Levels dialog.
    I noticed that. Using the white point makes the bits which you think
    should be white white but just washes out half the image.
    I amazes me that one can indeed do that, because haze reduces contrast
    so information *is* lost.
    That is nice. A very subtle effect though.

    Many thanks again.

    The other thing which suprises me is that while the ex-camera Jpeg,
    top quality setting, is say 10MB, the Photoshop-saved version, even in
    max res, is perhaps half that.

    Is this because PS has a superior compression algorithm? It almost
    certainly does have, because it is not CPU/memory limited.
     
    Peter, Mar 29, 2011
    #12
  13. Peter

    Savageduck Guest

    Memory is cheap. At least shoot RAW + JPEG.
    It seems you are just selecting "adjustments" from the "Image" menu.
    You are missing out on one of the very powerful features of Photoshop.

    I am going to make another assumption here, that you have not set up
    your work space to give you "Layers" in a window. To do so go to menu
    item "Windows" and check Layers. You can play around with the various
    work spaces or customize one which works for you. If you don't like it
    you can always go back to default. You can't break it.

    If you don't want to try that just yet, and just need an adjustment
    layer, go to Menu item "Layer"->"New Adjustment Layer" and select the
    adjustment layer you want.

    By using adjustment layers rather than making the adjustments directly
    to your image file you have a much greater degree of flexibility.

    I would suggest getting Matt Kosklowski's book "Layers" (Check
    Amazon.com or Kelby training < http://www.kelbytraining.com/ > ). This
    will give you a lot of information and tools you don't seem to be using
    now.
    Just remember JPEG is ultimately always lossy regardless of some claims
    of lossless jpeg. Always consider what it is you are going to do with
    your final output, print online sharing web publishing, or whatever.
     
    Savageduck, Mar 29, 2011
    #13
  14. Peter

    Joel Guest

    I agree that you are plain rubbish. Because you are totally rubbish to
    understand that I described 2 types of filters and at least 2 types of
    filters (round and square), and 2 types of filters (directly to lens and
    adapter), and probably few others but you are tô rubbish to understand
    it/them
     
    Joel, Mar 30, 2011
    #14
  15. Peter

    Joel Guest

    Yes, another rubbish
     
    Joel, Mar 30, 2011
    #15
  16. Peter

    Joel Guest

    Hey rubbish, you and your sister have tô much sensor in your brain.
     
    Joel, Mar 30, 2011
    #16
  17. Peter

    Joel Guest

    It doesn't really what format you use, different program has different
    tool. And if you use the right technique or combination then you should be
    able to get what you want, and if you do is right then you may do better
    than the one using RAW or whatever program.

    You should not buy any fairy tale.
     
    Joel, Mar 30, 2011
    #17
  18. Snow at altitude is not really white. It reflects the predominant blue
    of the sky. The human eye wants to see it as white, and does so. Adjust
    to your own taste. A sky-filter will help. Not a UV filter. You cannot
    recover detail that did not exist before it entered the filter/lens

    Joel is full of shit.
     
    John J Stafford, Mar 30, 2011
    #18
  19. Peter

    Joel Guest

    Heck, I treat you just like shit but you are too stupid to realize how
    stink you are.

    You are too stupid to think white is really white, or black is truely
    black. And as I said (you are too stupid to get it) just use the White
    eyedropper to pick whatever spot/area you (not you stupid but the OP) think
    it's white enough to his liking. And I didn't say anything about UV or any
    Photography technique, so don't play stupid with me.

    And to the OP, just enjoy whatever you have, don't listen to RAW or
    COOKED, there is no fairy tale but skill and right tool. Just remember that
    many of us have been using JPG for living for decades before RAW was (RAW
    isn't really born yet) born.

    Also, the snow color often be differences between P&S (you may like the
    result of P&S more than DSLR) and DSLR, between manufactures, and between
    lens. Before I get too old to handle the freezing cold weather, and even I
    don't like landscape, but I happen to love snow and winter sence so I used
    to go to many crazy places to snap the winter sense during or after snow
    storm.
     
    Joel, Mar 30, 2011
    #19
  20. Peter

    Voivod Guest

    And people vilify me... sheesh.
    So who DO you want to play stupid with you? I bet it's one of your
    favorite games!
    Can I have mine over-easy. Then there's no effort involved. Boy, do I
    love puns.
    So you're old and senile and no one should trust your failing memory for
    anything, is that it?
     
    Voivod, Mar 30, 2011
    #20
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