Can the 30D do this?

Discussion in 'Photography 101' started by Sean&Karen, Oct 7, 2007.

  1. Sean&Karen

    Sean&Karen Guest

    So I was on facebook and my friend just bought a digital camera. Not sure which one, but it is just a point and shoot as far as I understand. Anyways, she posted this picture. She said it was a setting where you can choose to accent a color. I am still new to the 30D since I haven't used it much other than on my cats. I am just curious if the 30D is capable of setting something up like that? I know that b&w can be photoshopped afterwards, but it would be fun to have an effect like this already built into the camera.

    Here is the picture

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    Last edited by a moderator: Apr 11, 2014
  2. Roger

    Roger Member Staff Member

    yes; what you are seeing is something done post-processing, like in Photoshop or PSP
     
  3. Sean&Karen

    Sean&Karen Guest

    HI we got in touch with our friend took that picture and they said it was a setting on there camera.

    Does anyone know if the 30D can do something like this or would it require us to use photoshop?
     
  4. Tim

    Tim Administrator Staff Member

    is there a way to desaturate colors individually then boost the green channel? this is not something i've heard of and i don't have this feature in my 5d... (i think)
     
    Last edited by a moderator: Apr 11, 2014
  5. Scott

    Scott Member

    You can do this in-camera with some Canon cameras - not DSLRs, though. Its called the "Color Accent Mode", and you can pick which color you want to show, while the other colors go to black & white. Default is green. The Canon G9 (and G7, I think) have this mode, and other Canon P&S cameras might have it too. I don't know about other makes.
     
  6. zackiedawg

    zackiedawg Member Staff Member

    First, as mentioned, this effect can be done pretty easily in post-processing - even with some simple free programs.

    As for doing this in-camera, it sounds more like something that is typically done with P&S cameras, not DSLRs. Usually, a DSLR will not emphasize these in-camera shortcut effects...but many P&S cameras do, since often they are purchased by people who may never intend to use a photo editing software, or even print directly from the memory card.

    I know many newer Sony cameras have this ability - including the H9, T200, W200, N2, and a few others. I wouldn't be surprised if some other brands also offer such selective color effects. Usually, advanced P&S have a variety of in-camera effects, such as B&W, posterzing, sepiatone, selective color, overlap guides for panorama stitching, adding graphics or dates, etc. Some even offer drawing tools in-camera.
     
    Last edited by a moderator: Apr 11, 2014
  7. Roger

    Roger Member Staff Member

    Ya know If you really wanted to play with it, I'm sure that you could use Canon's Picture Styles to do something like that.
     
    Last edited by a moderator: Apr 11, 2014
  8. Sean&Karen

    Sean&Karen Guest

    So I am ok with the fact of doing the color saturation post processing, but I am just wondering with Photoshop, how would it be done, or is the a question that should be asked in the Post Processing forum???

    I am trying to learn photoshop on my own (some tricks anyways). I took a course years ago, but it was a terrible course.
     
  9. Dan

    Dan Member

    While this topic would seem to be more appropriate to the post processing forum.. it's here for the moment, so I'll respond here:

    I've just done some experiments with a simpler form of selective desaturation. But when I left color in some things, I used things that had simple shapes. The picture posted here seems to have had a different process done to it.. instead of leaving a specific shape with its color intact, I suspect the camera removed all color except the greens in the trees.

    To attempt to explain this better.. what I did was select the objects that I wanted to keep colored, or perhaps rather I selected everything BUT them (the difference between selected and non selected always confuses me, I try one way and if I get the wrong result I just invert the selection).. and then I used a desaturation layer that took away the color content. So if the object I left colored had multiple colors, it kept all the colors.

    But those pine trees are too complex, I think it'd be too obvious if I did that with them. The problem is they're not a simple object, they're complex and you can see through the gaps in the branches to the background behind them. It'd be a lot of work to try to mask out the trees but leave the gaps in the branches open.

    What you want is some mechanism to desaturate all the color except the particular tint of the trees. I've done a web search.. and so far all I've found for photoshop is to use a tool to desaturate all the colors, one by one, except the color components that make up the color you want to keep.

    It works, but it seems kind of clumsy to me.. I really want a way to use a dropper to select my target color, and then just use a slider to desaturate all the other colors.

    I've attached a sample of what I did with this process. Note it's not supposed to be artistic, I have a lot of trouble figuring out how to use the selective coloring process to an artistic advantage. I just wanted to demonstrate what can be done with the process I'm describing.

    The specific process I used, in Photoshop CS3 (I have no idea how far back in the PS line this tool will exist, it seems to be fairly basic so I'd expect it would exist a ways back in PS history, it probably doesn't require CS3), was the tool "hue/saturation". It's found in the image menu, in the adjustments submenu. You open that up, and use the "edit" dropdown box, changing it from "master" to each color that you want to remove, and then slide the saturation slider all the way to -100. In this demo case I only removed two colors, reds and yellows. I was going to try to leave just the green camo paint, but I figured the blue shirt and star were equally striking so I left them in too.

    In the case of the picture with the pine trees.. I guess you'd leave the green and desaturate everything else.

    Like I said, I'd really prefer a process that let's me use a dropped to select a specific color, then.. I have to modify this, I'd need one slider to control the width of color to be preserved, that is how specific is the color selection supposed to be, just that particular shade or a more general color, and then another slider to control desaturation of all the other colors since it may be desirable to leave some color behind.

    But this is what I've found so far.

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    Last edited by a moderator: Apr 11, 2014
  10. Scott

    Scott Member

    Its not too hard in CS3. The key is to use the magic wand tool to select the color you want to keep. Try using a tolerance of 9 or 10, and click on the color. You'll see "marching ants" where the color is selected. Keep clicking until it looks like all of your desired color is selected (make sure that the "add to selection" button is on. Its the one in the upper left corner that looks like 2 intersecting boxes). Now, you need to "invert" [Select->Inverse] the selection (because you want to keep what you've selected and work with all the other colors). Go to Image->Adjustments->Desaturate to make all the other colors grayscale. Press Ctl+D to deselect and get rid of the marching ants, and you're there!



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  11. Sean&Karen

    Sean&Karen Guest

    Ok, I finally got chance to play around. I used the hue/saturation option. I don't really like the 'marching ant's all that much, but on this photo it was much easier to adjust everything and keep the blue/cyan. There wasn't much green in this one to keep that color.

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  12. Roger

    Roger Member Staff Member

    Here's the link to the new Picture Style Editor page for all Picture Style Canon dSLRs:
    (5D, 30D, 40D, Rebel Xti, 1DMkIII,1DsMkIII - you know I'm really surprised they put that in the MkIII)

    http://web.canon.jp/imaging/picturestyl ... index.html

    They say it will be available in November for everyone who hasn't bought the 40D. It should be a free download from Canon USA's product support page. It will probably be released with the new version of DPP that includes lens correction that they let us know was coming when the studio portrait FF beast that eats cheap L lenses for breakfast is released in the wild. (1DsMkIII)
     
    Last edited by a moderator: Apr 11, 2014

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