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06/16/2003 01:48:52 PM · #1 |
//www.shuttercity.com/ShowPhoto.cfm?PhotoID=32714
I've seen several pictures like this and don't know how to get that "colorized" IR look. I can adjust an IR photograph to greyscale and then apply auto levels and get a great looking "black and white" IR shot, but how is this look achieved? I have PS 7. Thanks for any help. |
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06/16/2003 02:04:04 PM · #2 |
I asked the same question a while back and got zero response :-/
I'm just playing with some IR shots I took at the weekend which I'll post later this week. As far as I can gather you get the colourised effect by swapping colour channels in the channel mixer. The effect I was after was white trees/blue skies - this is achieved by dropping red to 0 and upping blue to +100 in the red channel, and dropping blue to 0 and upping red to +100 in the blue channel.
I'm still experimenting so can't really tell you more, but I'm finding that auto levels -> enhance per channel contrast and then swapping the channels is giving some reasonable results.
The biggest thing I missed before all this was setting a custom white balance with the IR filter on. D'oh!
HTH
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06/16/2003 02:10:17 PM · #3 |
I would just convert it to b&w then paint over it.
Message edited by author 2003-06-16 19:14:31.
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06/16/2003 02:18:29 PM · #4 |
I believe you can acheive this by using the Hue/Saturation tool with the "Colorize" box checked. Never tried it myself but it seems like it would work. Can anyone confirm?
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06/16/2003 02:46:25 PM · #5 |
I've never shot IR but I assume you can shoot IR in colour. If so, it is easy to desaturate all the colors to a greyscale look (ie, NOT use the "greyscale" command), then re-establish one or more colours as desired.
Message edited by author 2003-06-16 18:47:07.
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06/16/2003 03:05:00 PM · #6 |
Originally posted by K-Rob:
I believe you can acheive this by using the Hue/Saturation tool with the "Colorize" box checked. Never tried it myself but it seems like it would work. Can anyone confirm? |
I've never tried it for IR but it works for regular RBG images.
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06/16/2003 03:08:30 PM · #7 |
| i think you might be having trouble with this because you are actually taking black and white IR's and then trying to figure out how to add color. I'm pretty sure the IR effect is done totally in post-processing. They do the IR processing and black and white on a layer, and then they keep the original color image, and play with the saturation, and put that on another layer, etc. Just play around with it. |
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06/16/2003 03:20:36 PM · #8 |
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06/16/2003 03:26:50 PM · #9 |
Jolly Good :)
Message edited by author 2003-06-17 02:22:03.
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06/16/2003 03:30:36 PM · #10 |
Originally posted by Konador:
all bad links bod |
Oops. Anyone round here know how to link images properly?
Cheers Ben, should be fixed now.
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06/16/2003 04:55:30 PM · #11 |
You are right, I've seen comments from Tess on other sites where she's saying just that ... hand-colored in photoshop.
Originally posted by JasonPR:
i think you might be having trouble with this because you are actually taking black and white IR's and then trying to figure out how to add color. I'm pretty sure the IR effect is done totally in post-processing. They do the IR processing and black and white on a layer, and then they keep the original color image, and play with the saturation, and put that on another layer, etc. Just play around with it. |
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06/16/2003 06:24:34 PM · #12 |
| Bod - the links worked great when I just checked them, and I think your pics are really good. I want to try this but haven't taken the time... |
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06/16/2003 07:33:49 PM · #13 |
Whole gallery of em... //www.pbase.com/davenit/ir
Pretty much what Bod said...but...
Use a 72 filter which is a near IR filter and leaves color in the image. Swap the red and blue channels and auto level. NO hand coloring involved. Can't use an 87 filter, just a 72... Hope this helps...
Dave
Message edited by author 2003-06-16 23:40:09.
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06/16/2003 10:56:43 PM · #14 |
"Use a 72 filter which is a near IR filter and leaves color in the image. Swap the red and blue channels and auto level. NO hand coloring involved. Can't use an 87 filter, just a 72... Hope this helps... "
Hi Dave
Could you give me more info on this filter (Make) as I would love to try taking photos with this.
Cheers
T |
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06/16/2003 11:12:07 PM · #15 |
Tony, the filter is a Hoya R72.
Judging by Dave's shots I still have some work to do - they really are superb!
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06/16/2003 11:49:49 PM · #16 |
Cheers Bod
Dave's photos are just stunning .... Looking forward to try this..
T |
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06/17/2003 04:55:50 AM · #17 |
I found this site discussing IR with digital cameras.
//www.wrotniak.net/photo/infrared/
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06/17/2003 05:15:59 AM · #18 |
This might be a dumb question, but I'll ask it anyhow. Exactly how do I go about swapping the channels?
Originally posted by agwright:
Swap the red and blue channels and auto level. NO hand coloring involved. |
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06/17/2003 05:18:30 AM · #19 |
Franziska, see my earlier post - second one in the thread. Took me a while (and some googling) to figure it out too!
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06/17/2003 05:19:37 AM · #20 |
Duh, must've missed that when I browsed the discussion ... sorry. I'll try that out when I get home. Thanks :)
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06/17/2003 06:31:03 AM · #21 |
Originally posted by agwright:
Cheers Bod
Dave's photos are just stunning .... Looking forward to try this..
T |
Before you rush off and buy the filter - I'd check that it actually works with the 10D - I know the D60 has a hot filter that makes it unuseable for IR work.... |
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06/17/2003 07:28:30 AM · #22 |
It should. The same hot mirror on G2 doesn't stop it from being usable. The hot mirror only reduces the IR level, but does not eliminate it.
The only problem is, the exposure time is a lot longer now (2-3 seconds), versus 1/10 to 1/20 second on the G1, and hence, you're going to run into issues such as subjects moving due to wind.......
Originally posted by Gordon:
Originally posted by agwright:
Cheers Bod
Dave's photos are just stunning .... Looking forward to try this..
T |
Before you rush off and buy the filter - I'd check that it actually works with the 10D - I know the D60 has a hot filter that makes it unuseable for IR work.... |
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06/17/2003 07:50:44 AM · #23 |
That's true, but the estimates I've seen for the D60, in bright sunlight, shooting at ISO 100, at f4.5 seem to require shutter speeds up around 3 or 4 minutes, which isn't very useable.
I don't know how the 10D fares.
Edit: there is a whole lot of discussion on techniques for this on dpreview - search the forums for infrared and 10D
Also there is a load of info about doing the blue sky channel switching thing there too.
Message edited by author 2003-06-17 11:55:24. |
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