PHOTOSHOP - DPChallenge Forums

Canon EF 24-105mm f/4.0L IS

11/25/2007 09:43:30 PM · #1

I really have no idea how to use photoshop,but I was wondering...how do you make a picture black and white,but still have one (or two) objects still coloured?

thanks! :)

Canon EOS-5D Mark II

11/25/2007 09:50:09 PM · #2

If your running CS or cs2;

Just hit Ctrl + Shift + U to desaturate the image.

Or go to image, adjustment, desaturate.

Then to make one subject in color; you'll either make 3 layers. Background, Layer One, Layer 2.

You'll have the background layer which is desaturated, then layer two in color, finally layer 3 desaturated.

From here, go to layer 3, and get out the eraser tool, pick a soft brush with an appropriate size, and erase the subject(s) you want in color.

That's one way to do it.

Mike_Adams

Canon EOS-40D

Canon EF 70-200mm f/2.8L IS USM

11/25/2007 09:51:28 PM · #3

This is done through layering. Essentially, what I would consider to be the most important thing to start working with and understanding Photoshop (PS) on here most of the time.

Start creating layers and then essentially what you would do after creating some different layers is using the magic wand to select things (in your case what you want to keep colored) then reverse selecting and after everything else is selected you turn all of that to B&W.

You can change up the ordering but really it is layer work that you are looking for.

aliqui

Nikon D300s

Nikon AF-S Nikkor 70-200mm f/2.8G ED VR II

11/25/2007 10:03:12 PM · #4

One of the easiest ways to do it without creating multiple layers is Image / Adjustments / Hue/Saturation. A box will pop up and there will be a dropdown box with: Master, Reds, Yellows, Greens, Cyans, Blues, and Magentas. You can adjust the Saturation on each chosen color to -100 and those will be black/white.

Edit: I thought I had a good example of this, but apparently I don't, heh. I use this technique a lot when toning down one color over another. Like if the sky is too bold, I'll select the Blues or Cyans and lower the Saturation.

Message edited by author 2007-11-25 22:13:46.

Dirt_Diver

Nikon D3s

Nikon AF-S NIKKOR 24-70mm f/2.8G ED

11/25/2007 10:18:19 PM · #5

Convert to Black and White

Yo_Spiff

Olympus OM-D E-M5 Mark III

Olympus 12-100mm f/4.0 M.Zuiko ED IS PRO

11/25/2007 10:31:13 PM · #6

If the image is such that you can easily select the object you want to remain colored, you can select the object(s), invert the selection and then desaturate the remainder of the image. This can be easy or difficult depending on the shape of the item you want to snag.

Olympus OM-D E-M5 Mark III

11/26/2007 07:05:49 PM · #7

[thumb]617102[/thumb][thumb]617108[/thumb]
First two tries...pretty good I think...

Message edited by author 2007-11-26 19:15:13.

Yo_Spiff

Olympus 12-100mm f/4.0 M.Zuiko ED IS PRO

11/27/2007 08:38:02 AM · #8

You did good on that. I really like the one with the flower in her hair. Which of the suggested techniques did you use for these?

Canon EF 24-70mm f/2.8L USM

11/27/2007 07:29:14 PM · #9

I used the quick selection tool and copied it..then made it B&W...re-selected using the quick selection,then pasted it back on..took a few tries to get it right..but now that I know how,it's so much fun!
here's another one I did:

Niten

Canon EOS-20D

11/27/2007 08:28:08 PM · #10

I think I would make a dup layer of the original-desature at to suit you then add a mask and paint back in what you want to be color. Or select it and fill it with black on the mask. Acctually I would probaly do it a much more complicated way using CS3 and lightroom. But thats a good place to start understanding layers.

kandykarml

Nikon D80

11/27/2007 09:13:31 PM · #11

Originally posted by Niten:

That's how I do it.. Although, I've never really used "quick mask" and should try using it more often.. I just find that desaturating the 2nd layer seems to be easier.. Nice job on your first try !!! You should get a Photoshop book at one of your local book stores.. You'd be amazed at the stuff you can do.. And, then even more amazed when you find out that what you just learned isn't even the tip of the iceberg..

Nikon AF Zoom-Nikkor 18-135mm f/3.5- 5.6G ED DX

11/27/2007 09:34:04 PM · #12

a book on photoshop!? lol I should have known one existed,but I never thought about it..that's a great idea! :) Thanks!
Then maybe I will understand how to do all the stuff that you guys are talking about :)

tpbremer

Nikon D80

12/05/2007 11:42:02 AM · #13

Originally posted by CWelch:

There is a whole SECTION of books on photoshop--I was where you were about 2 years ago and from this forum, online tutorials, and books, my skills have grown exponentially!
I recommend online tutorial--even if the end result isn't something that is completely relevant to you, you'll learn a new technique that you can apply down the road.
good luck!

Canon EF 24-105mm f/4.0L IS

12/15/2007 05:40:55 PM · #14

Thanks :)

emlbaker

Canon EOS-5D

12/15/2007 05:49:20 PM · #15

Another option is to use whatever method you want to get it to black and white, be it desaturate or a conversion script, then use the history brush to paint over the areas you want back to the original colour.