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Thread: isolate a portion of photo

  1. #1

    Default isolate a portion of photo

    I've been trying to do this, but not having had proper training in Photoshop (I learnt it by myself), I can't seem to do this.
    I hope I can solicit some advice from the more learned ones.

    I'm trying to isolate a portion of a photo and turn the other parts black and white.
    For example, a hand holding an ang pow. I just want the ang pow in colour and the rest of the photo in black and white. How do I do that?

  2. #2

    Default Re: isolate a portion of photo

    has been asked before
    to isolate, you have many choices,

    i like to use magnetic lasso, not sure if that's the best way, but works for me most of the time
    select the thing in color, inverse, then desturate everything else

    there's also magic wand, which is horribly inaccurate for me, you can slowly use grow to select everything you need

    i understand there's another selection tool , name has edge in it, but i've never used it, so i won't know
    magnetic lasso is pretty easy to use though

  3. #3

  4. #4

    Default Re: isolate a portion of photo

    Since the object you are trying to select is having about the same uniform colour, instead of using lasso, you can actually select by colour selection method which is faster...

    Cheers!

  5. #5

    Default Re: isolate a portion of photo

    garang01 b r u familiar with masks?? if so 1.apply channel mixer adjustment layer, 2. on the mask paint with black brush, part of an image that needs to stay in colour.

  6. #6
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    Default Re: isolate a portion of photo

    Quote Originally Posted by garang01 View Post
    I've been trying to do this, but not having had proper training in Photoshop (I learnt it by myself), I can't seem to do this.
    I hope I can solicit some advice from the more learned ones.

    I'm trying to isolate a portion of a photo and turn the other parts black and white.
    For example, a hand holding an ang pow. I just want the ang pow in colour and the rest of the photo in black and white. How do I do that?
    Simplest is to just turn the whole photo black and white and then colour the ang pow in with the history brush

  7. #7

    Default Re: isolate a portion of photo

    For basic conversion, just 3 steps and 1 min can le.
    1. Duplicate background layer.
    2. On new layer:
    a. Desaturate
    b. User eraser tool on parts you want colour.
    Done.

  8. #8

    Default Re: isolate a portion of photo

    great! thanks for all your help
    will try it out

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