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glenn71x

Joined: 27 Apr 2005
Posts: 2



PostPosted: Wed Apr 27, 2005 10:53 am    Post subject: Chroma? Not Sure What it is called... Reply with quote

Total Newbie here... I am trying to create an effect for a Photoshow I am making on DVD. I have seen this effect before...where you strip all the color out of a picture except one...so it's black and white with maybe just a pink sky, or red flowers. What is the technical term for this effect? Is it easy to create...? Can someone explain to me how. Also can it be done in photoshop Elements or only the full versipn of Photoshop?

Thanks Everyopne!
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Haunus

Joined: 24 Nov 2004
Posts: 740



PostPosted: Thu Apr 28, 2005 3:18 am    Post subject: Re: Chroma? Not Sure What it is called... Reply with quote

glenn71x wrote:
Total Newbie here... I am trying to create an effect for a Photoshow I am making on DVD. I have seen this effect before...where you strip all the color out of a picture except one...so it's black and white with maybe just a pink sky, or red flowers. What is the technical term for this effect? Is it easy to create...? Can someone explain to me how. Also can it be done in photoshop Elements or only the full versipn of Photoshop?

Thanks Everyopne!

you need to isloate the part that you want to make black and white (just one possible way there are others) with the selection tool. PReferably use the select tool to select areas that will still have color then go to select inverse, then using adjust -> hue/saturation you can play around until its black and white (I dont know the exact settings) But you may want someone to do it for you.
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thehermit

Joined: 05 Mar 2003
Posts: 3987
Location: Cheltenham, UK


PostPosted: Thu Apr 28, 2005 5:54 am    Post subject: Reply with quote

I believe the technique you are thinking of is Chroma-keying or Chroma-key. I am not positive about this as it's outside my normal sphere of work.
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teddc

Joined: 04 Oct 2004
Posts: 389
Location: Belmont North Australia


PostPosted: Thu Apr 28, 2005 6:49 am    Post subject: Reply with quote

It something like this
Duplicate the layer. Desaturate that layer, erase the parts that you want colored.
The bottom layer (coloured) will come thru the erased areas

ted

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glenn71x

Joined: 27 Apr 2005
Posts: 2



PostPosted: Thu Apr 28, 2005 9:13 pm    Post subject: Reply with quote

Can this be done with Photoshop Elements 3? Or must the full version of Photoshop be used?

Thanks!
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teddc

Joined: 04 Oct 2004
Posts: 389
Location: Belmont North Australia


PostPosted: Thu Apr 28, 2005 10:49 pm    Post subject: Reply with quote

I'm not sure as I only use PS.
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qubert

Joined: 24 Jul 2004
Posts: 253



PostPosted: Wed May 04, 2005 5:48 pm    Post subject: Reply with quote

This can ONLY be done in Photoshop 5.0 ,6.0, 7.0, CS and CS2 because they have what is known as ALPHA CHANNELS, it would be very, very hard to do what you are talking about in PSE2, and 3 because they do not have alpha channles you are able to work with.
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cbadland

Joined: 19 Jan 2005
Posts: 962



PostPosted: Wed May 04, 2005 7:58 pm    Post subject: Reply with quote

glenn71x wrote:
Can this be done with Photoshop Elements 3? Or must the full version of Photoshop be used?


Yes. You can do this in PS Elements 3.
Open your image. Make an Adjustment Layer for Hue/Saturation. Move the saturation slider all the way to the left to make image bw. The adjustment layer has mask (little white box on right). Paint with black brush to let color parts show through.
Use your Help file for a more detailed explanation.
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