Pages: [1]   Go Down

Author Topic: Question about Photoshop...  (Read 4188 times)

Christopher

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 1499
    • http://www.hauser-photoart.com
Question about Photoshop...
« on: February 28, 2007, 03:06:14 pm »

Hello,

I have following question. I have photographed a painting, which reacts to coloured light. For example, if you choose to shine on it with a blue light. (All other lights have to be turned off) Than you see a one person, now if you also turn on a second light. In this case a red light than you see a lot of people. So they are painted that they are only seen in special light.

Is it possible to simiulate these settings in Photoshop ? I have the image... in Photoshop no is there a way to "shine" different light on it ? Some layer settings ? or Filteres or plugins ?

Thanks for the Help

Christopher
Logged
Christopher Hauser
[email=chris@hauser-p

Ed Foster, Jr.

  • Full Member
  • ***
  • Offline Offline
  • Posts: 219
    • http://www.edfoster.net
Question about Photoshop...
« Reply #1 on: February 28, 2007, 03:31:20 pm »

Quote
Hello,

I have following question. I have photographed a painting, which reacts to coloured light. For example, if you choose to shine on it with a blue light. (All other lights have to be turned off) Than you see a one person, now if you also turn on a second light. In this case a red light than you see a lot of people. So they are painted that they are only seen in special light.

Is it possible to simiulate these settings in Photoshop ? I have the image... in Photoshop no is there a way to "shine" different light on it ? Some layer settings ? or Filteres or plugins ?

Thanks for the Help

Christopher
[a href=\"index.php?act=findpost&pid=103826\"][{POST_SNAPBACK}][/a]
Christopher,
Maybe - Filter>Render>Lighting Effects

Good Luck,
Ed
Logged
Ed Foster, Jr.
[url=http://www.edfoster.

dobson

  • Full Member
  • ***
  • Offline Offline
  • Posts: 134
    • http://
Question about Photoshop...
« Reply #2 on: February 28, 2007, 03:37:29 pm »

Is this painting fluorescent, or just painted with different colors, (like a color-blindness test)? If it isn't fluorescent, you chould check the channel mixer to see if it brings out the different images. If it is fluorescent, you will have to photograph it in multiple lighting conditions and blend in PS.

Phillip
Logged

Christopher

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 1499
    • http://www.hauser-photoart.com
Question about Photoshop...
« Reply #3 on: February 28, 2007, 04:02:46 pm »

First of all thanks. Let me explain it furthor. The image is painted with normal paint, and with "white normal light" you see everything. The effect chnages only if you put on different light. Red, Grren and Blue, so that is what I'm trying to do in PS.
Logged
Christopher Hauser
[email=chris@hauser-p

ckimmerle

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 441
    • http://www.chuckkimmerle.com
Question about Photoshop...
« Reply #4 on: February 28, 2007, 04:27:46 pm »

Christopher,

Are you trying to create an image in PS that, when printed, responds differently to different colors of light? If so, then you'll have to create your photo in a couple of different layers, each layer being given a color using Gradient Overlay.

So, when a red light is on the final print, the figures on the red-toned layer will be invisible, but will show up under blue or green light. Same for the other colors.

I don't think it's possible to do this with full-color images as you need the color tints to give the light something to react with.

I hope I correctly interpreted what you are trying do.

Chuck
Logged
"The real voyage of discove

orangekay

  • Jr. Member
  • **
  • Offline Offline
  • Posts: 65
Question about Photoshop...
« Reply #5 on: February 28, 2007, 05:37:20 pm »

If you want it to look that way on a monitor, absolutely not. If you want to create documents which will print that way then you'll need to setup spot channels for each element and get in touch with a very good printer who can deliver perfect metameric pairs on whatever substrate you intend to use.
Logged
Pages: [1]   Go Up