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(Another) Color Editor Question

Michael Sonshine
I watched some of the C1 webinars and, during one, the moderator said that the (Advanced) Color Editor could be used to change one color to another by continually selecting the same spot and moving the Hue Rotation slider until you reach the color you wish. You must, of course, continually move the slider in the same direction as before. He said it was not designed for that, but it could be used for that.

I tried that today, selecting a blue boat cover which I wished to change to either a yellow or orange. The process did not work and, in not working, raised two questions.

1) Selecting a color with the CE color picker also highlights on the color wheel the actual color location and saturation. If constantly selecting the same spot and moving the Hue Rotation slider (always, of course, in the same direction) changes that color, the spot showing on the color wheel should change from one selection to another in the same direction. In my case the selections first starting moving the selected spot counter-clockwise and then, after several selection, back clockwise ending up in the same spot with the boat cover the same color. It never reached yellow or orange (or red or green), but moved slightly in one direction and then slightly in the other direction. Why?

2) The second question is really more technical in nature. After moving the Hue Rotation slider (always to the right) the entry displayed for Hue (delta H) contains the value 30. My first thought was that perhaps that was degrees, but the next time the same spot was selected and the selection point in the color wheel showed the new color, it did not look like it was 30 degrees from the previous location. And, of course, constantly moving the slider did not eventually move the selected color around the circle. Can anyone tell me what those values mean?

Thanks.
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Comments

9 comments

Date Votes
  • Ian Wilson
    Moderator
    Top Commenter
    This works for me. Here is an example. (All three bins were blue at the start.)

    What I did was (1) create a layer on the local adjustments tab and draw a mask to cover just the right most bin. I used 100% opacity and a hard edged brush. (2) On the local adjustments tab go to the Colour Editor tool and select the Advanced tab (NOT the basic tab). (3) Use the colour picker to sample the blue from that bin. (4) Slide the hue adjustment tab all the way to the left (the route to green being shorter in that direction than the other way round the circle). You should see the bin colour change a bit, but the pie slice on the colour wheel will not move. (5) Sample the altered colour of the bin and do it again, and again. (I sampled a total of 4 times to get to the shade of green you see here.)

    So... things to check might be 100% opacity for the mask, and using the advanced colour editor, not the basic one.

    Ian

    https://farm6.staticflickr.com/5757/23864209665_7764f0ee58_c.jpg
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  • HansB
    I just tried it on a red pepper photograph. Sampled the color 12 times from the same spot in the color Editor, advanced tab (not in local adjustments, no mask, no layers). Changing the hue on these samples gets me completely around the color wheel, ending where I started. Just as expected. The pepper turns orange, then yellow, green, turquoise, blue, violet, and back to red. ( I love the bright blue pepper, by the way.)

    I tried the same as local adjustment, masking in half of the pepper with the same result on only the selection.

    As Ian already wrote, basic tab will not do it.

    The hue value changes are in line with the degrees on a color wheel when I do it. 30 degrees of the 360 degrees full circle. The color wheel area always displays the source color and doesn't change with the hue shift. The source/target color patches show the source color on the left and the sum of all changes on the right


    Regards,
    Hans
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  • Michael Sonshine
    Ian3, HansB:

    First, thank you for your responses. It confirms that either I am doing something wrong or I am not communicating my questions clearly. Probably both. 😊

    I re-read my original post and I can see where there is probably some confusion as to what I was asking, at least in the first question, so I will try to be clearer here and use some screen shots to show exactly what I am asking.

    Screen shot 1:

    While I was traveling through California in a small RV I stopped at a retirement community for the day and while I was there I took this photo wanting to get an image of the chocolate colored mountains. I used this image, for no particular reason, to play around with C1-9 and selected the blue boat cover where the arrow is pointing to meaning to change its color to yellow.

    I added a local adjustment layer and made a mask of the left side of the boat cover. And, as you can see on the right side of the image, I made one selection and moved the Hue Rotation slider to the right as much as was possible. There is one adjustment line. Note the position of the selection on the color wheel.

    Screen shot 2:

    Here is the same image after the 6th Hue change. You can see that there are now six hue changes, each of 30 degrees (I know that now thanks to your answer to my second question) and the color of the boat cover has changed where the mask was created, but the selected area in the color wheel is exactly where it was with the first selection. I expected it to be 180 degrees around the circle. That is what I was trying to ask in my first question.

    In re-reading my question it is easy that I was not clear in what I was asking. Hopefully this clears that up. What I meant to ask was why, after 6 hue changes and 6 new selections, is the selected part of the color wheel still in the same place?

    I ran through this adjustment sequence twice, once with a local adjustment layer and a selected part of the image (as seen in the screen shots) and once without any adjustment layer or selected area and both yielded the same results. The selection point on the color wheel does not move around the circle. The color of the boat cover changes, but the selection points, which I expected to move around the circle since the selected color is changing, does not.
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  • Ian Wilson
    Moderator
    Top Commenter
    Yes, it's odd isn't it? But it seems to be the designed behaviour - as Hans also said the selected part of the colour wheel does not move. But the colour change you have achieved in the boat cover shows that you are getting the result you were hoping for, even if the colour wheel does not show what you expected it might.

    Nice looking mountains...

    Ian
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  • Michael Sonshine
    [quote="Ian3" wrote:
    Yes, it's odd isn't it? But it seems to be the designed behaviour - as Hans also said the selected part of the colour wheel does not move. But the colour change you have achieved in the boat cover shows that you are getting the result you were hoping for, even if the colour wheel does not show what you expected it might.

    Nice looking mountains...

    They are called the Chocolate Mountains and it is easy to see why.

    My second question, about what the delta H values meant, stemmed from the fact that the selected color did not march around the color wheel as I continued to select the changed colors. Since I did not see the selection move I did not know if the values were degrees or not and it did not make sense to me that the selection of the changed colors did not reflect in the color point selected in the wheel.

    I suppose that it might be an artifact of the way this was implemented in C1. That is, perhaps the changes are all centered in some internal C1 layers and displayed properly on the screen, but selecting the same point always selects from the base image and thus always yields the same color. I am guessing, of course, but it certainly confused me when I started testing this functionality.

    By the way, that is an interesting photo you posted. Where was it taken? Bristol?
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  • Ian Wilson
    Moderator
    Top Commenter
    Yes, it is in North Street in Bedminster in Bristol, walking distance from my house. That part of the city is full of wall art like that. And they change it regularly. I must go back and try to get a photo of that one when it hasn't got bins and a car in the way.

    Ian
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  • Michael Sonshine
    [quote="Ian3" wrote:
    Yes, it is in North Street in Bedminster in Bristol, walking distance from my house. That part of the city is full of wall art like that. And they change it regularly. I must go back and try to get a photo of that one when it hasn't got bins and a car in the way.

    Ian

    Very nice art work. Much nicer than the stuff I see anywhere around here as that is mostly graffiti and ugly. Certainly spruces up the business neighborhoods.
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  • Ian Wilson
    Moderator
    Top Commenter
    Since you like it, and at the risk of going well off-topic, here's another from very close to the first location.

    Ian

    https://farm6.staticflickr.com/5633/23501424899_bd9b2dc546_c.jpg
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  • Michael Sonshine
    Stunning.

    Never been to Bristo (except the train station when British Rail took us all to Bristol instead of Bath, but then they had us change trains and took us to Bath). Perhaps I need to fix that the next time I am in the UK.
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