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      07-04-2007, 04:40 PM   #1
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How to do this in photoshop?

So I got my wife an SD850. Not bad for a P&S - although the corners of the images are very soft, disappointingly so.

I played around with some of the creative modes and had a bit of fun with the color accent mode. What this does is take a user defined color and then shows only that color in the final image. It's different to masking and then converting the unmasked are because the accent color could be anywhere in the image. See examples (not the best pics, but you get the idea.)

I found myself asking, if a $350 P&S can do this in real-time, there must be a way to do this in photoshop. I just can't figure out how. Any ideas??
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      07-05-2007, 02:15 AM   #2
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not a good one, but you mean this?
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      07-05-2007, 03:08 AM   #3
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Quote:
Originally Posted by 18LLC View Post
not a good one, but you mean this?
Well kind of, but not really. What I am really looking for is a way to take a FULL color picture and remove all colors except a user defined color. Eg. filter out everything but RED and make everything else B&W.

The camera does this e.g. in the examples, I set the camera to make everything B&W but let RED (1st shot) BROWN (2nd shot) and BLUE (third shot).

It's different from masking because the colors that show can be anywhere in the frame. It's neat that the camera does it, but there MUST be a photoshop way.
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      07-08-2007, 11:29 AM   #4
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I could do that in photoshop no problem. Give me a full color pic and let me know what color you want. PM me
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      07-08-2007, 12:15 PM   #5
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Share your technique with the rest of the community so we can all benefit from your knowledge!
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      07-08-2007, 12:24 PM   #6
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I could do that in photoshop no problem. Give me a full color pic and let me know what color you want. PM me
+1

It's really simple. Takes like 2 secs...
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      07-08-2007, 12:34 PM   #7
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Share your technique with the rest of the community so we can all benefit from your knowledge!
Well, the way I would do it is...

Firstly desaturate the picture. This will make the picture black/white. Then use the "polygonal lasso tool" to select the parts of the pic that you want in colour. Now use the "history brush" to undo changes we made to the picture (i.e. desaturate). This will give us colour back in the areas we selected with the "polygonal lasso tool". Simple.

If you want a gradual change between black and white, you can use the history tool on areas that you want to see the colour. Make sure you right-click and choose a very low "hardness" though. This will give a gradual change between black/white and colour.

Any Q's, lemme know...
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      07-08-2007, 12:41 PM   #8
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Quote:
Originally Posted by Gripster View Post
Well kind of, but not really. What I am really looking for is a way to take a FULL color picture and remove all colors except a user defined color. Eg. filter out everything but RED and make everything else B&W.

The camera does this e.g. in the examples, I set the camera to make everything B&W but let RED (1st shot) BROWN (2nd shot) and BLUE (third shot).

It's different from masking because the colors that show can be anywhere in the frame. It's neat that the camera does it, but there MUST be a photoshop way.
I'm sure there is a way, I'll look for you...
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      07-08-2007, 02:51 PM   #9
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This is the easiest way to do it. Much easier than previously mentioned. Open up a picture that you want to edit. The effect looks better the more colors there are. Anyways go to Select>Color Range. From here you can either choose a preset color (ex. Blue) or use the dropper tool and select the color you want and adjust the fuziness to either select more or less of that range of color. Mess around with it to get the selection you want. Before yo click ok however click the "Invert" box so that you select everything BUT the color you wanted.

Next click Control+U or Adjustments>Color/Hue. Just drag the middle bar (saturation) all the way to the left and voila! You've desaturated the entire picture except for the color you wanted to keep. I'll post an example
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      07-08-2007, 03:00 PM   #10
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Before:


Rendition 1:


Rendition 2:


Rendition 3:


Like I said. You can play around with the fuziness to get brighter or duller colors
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      07-08-2007, 06:24 PM   #11
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Quote:
Originally Posted by M3350Z View Post
Before:


Rendition 1:


Rendition 2:


Rendition 3:


Like I said. You can play around with the fuziness to get brighter or duller colors
Hey thnx bro, that's quite smart. I knew there would be a way to do it. I've never really read photoshop tutorials, I just find my own way around
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      07-08-2007, 06:31 PM   #12
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I personally do it this way....

1. Open the picture you want in PS
2. "select all" and "copy" the image
3. Open a new canvas and "paste" it on there.

At this point, you have 2 identical images opened up in two different windows

4. Go to one of the windows opened, and do whatever effect you want to it, whether it be black/white, blur, etc.

5. "select all'' and ''copy'' the picture you just did.
6. ''paste'' it on top of the untouched picture that you earlier made a copy of
7. Go to the eraser tool and erase the object(s) in the picture you want to make in full color. I personally zoom in to 400% to make sure that the lines are clean.

That should be it.

Some random example..

I exaggerated the RGB setting in the background, while the car is not touched...
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      07-08-2007, 06:35 PM   #13
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Another example...instead of making the background black/white, I made it a bit blurry..but same concept and steps applied.
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      07-08-2007, 08:59 PM   #14
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Quote:
Originally Posted by M3350Z View Post
This is the easiest way to do it. Much easier than previously mentioned. Open up a picture that you want to edit. The effect looks better the more colors there are. Anyways go to Select>Color Range. From here you can either choose a preset color (ex. Blue) or use the dropper tool and select the color you want and adjust the fuziness to either select more or less of that range of color. Mess around with it to get the selection you want. Before yo click ok however click the "Invert" box so that you select everything BUT the color you wanted.

Next click Control+U or Adjustments>Color/Hue. Just drag the middle bar (saturation) all the way to the left and voila! You've desaturated the entire picture except for the color you wanted to keep. I'll post an example


That's exactly it! I'll mess with this later. Thanks for taking the time to explain it.
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      07-08-2007, 09:05 PM   #15
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Quote:
Originally Posted by wj4 View Post
I personally do it this way....

1. Open the picture you want in PS
2. "select all" and "copy" the image
3. Open a new canvas and "paste" it on there.

At this point, you have 2 identical images opened up in two different windows

4. Go to one of the windows opened, and do whatever effect you want to it, whether it be black/white, blur, etc.

5. "select all'' and ''copy'' the picture you just did.
6. ''paste'' it on top of the untouched picture that you earlier made a copy of
7. Go to the eraser tool and erase the object(s) in the picture you want to make in full color. I personally zoom in to 400% to make sure that the lines are clean.

That should be it.

Some random example..

I exaggerated the RGB setting in the background, while the car is not touched...
Nice effect. Thanks for sharing - with photoshop, there's only so much you can learn on your own. I've read books and got quite a few nice ideas from there, they never quite tell you how to get the effect that you want.
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      07-08-2007, 09:11 PM   #16
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Thanx for sharing!
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      07-09-2007, 12:31 AM   #17
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Quote:
Originally Posted by M3350Z View Post
This is the easiest way to do it. Much easier than previously mentioned. Open up a picture that you want to edit. The effect looks better the more colors there are. Anyways go to Select>Color Range. From here you can either choose a preset color (ex. Blue) or use the dropper tool and select the color you want and adjust the fuziness to either select more or less of that range of color. Mess around with it to get the selection you want. Before yo click ok however click the "Invert" box so that you select everything BUT the color you wanted.

Next click Control+U or Adjustments>Color/Hue. Just drag the middle bar (saturation) all the way to the left and voila! You've desaturated the entire picture except for the color you wanted to keep. I'll post an example
Rats... PS elements lacks this function. Time to get CS3 (I get edu discount with my MBA class).
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      07-20-2007, 11:45 PM   #18
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Yep!
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