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05/25/2005 02:09:44 PM · #1 |
What is Infrared Photography I just saw a photo on deviantart.com that is taken in infrared mode usig nikon 8800 What is exactly infrared photography ??????
//www.deviantart.com/view/18693127/
plz let me know
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05/25/2005 02:12:54 PM · #2 |
You use a special filter that blocks all infared light. Here is a thread about it.
//www.dpchallenge.com/forum.php?action=read&&FORUM_THREAD_ID=66688&order=DESC
We met a gentleman this weekend at the botanical gardnes who made a custom filter holder for his small digital camera. I forget what brand it was but it was very ingenious and worked wonderfully. I would like to do it but I hear my camera bites at it.
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05/25/2005 02:19:52 PM · #3 |
IS IT POSSIBLE TO GET THIS EFFECT IN PHOTOSHOP POST PROCESSING ???
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05/25/2005 02:21:48 PM · #4 |
Originally posted by ashishkushwaha:
IS IT POSSIBLE TO GET THIS EFFECT IN PHOTOSHOP POST PROCESSING ??? |
I believe on that other thread there is a Photoshop link to an action of some sort. It is cool photography that is for sure.
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05/25/2005 02:24:00 PM · #5 |
Originally posted by sabphoto:
You use a special filter that blocks all infared light. |
you mean, blocks everything except infrared light.
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05/25/2005 02:37:07 PM · #6 |
Infrared light is a spectrum of light not visible to the naked eye. It can loosely be defined as "photographing heat"; warmer things tend to show up stronger in infrared shots, and we cook with infrared radiation sometimes. In the old days, they built film that was sensitive only to IR radiation; no filter was required.
In a digital cam the sensor is sensitive to ingfrared radiation up to a point, but it's only part of the spectrum the cam reads. So you use a filter that only passes through the IR radiation, to emulate the results of films sesnitive only to those rays.
There are PS actions that attempt to duplicate the look:
//www.outdooreyes.com/photo95.php3
//www.nickgallery.com/web_pages/technical%207.htm
//homepage.mac.com/pbize1/Scripts/PSAInfrared.html
Here are several free actions I located; I haven't used any of them myself. The second one looks extremely promising; I'm gonna download that and play with it.
Robt.
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05/25/2005 03:26:28 PM · #7 |
Here's an infrared conversion of my "apple" entry:
 
This used the action from //www.nickgallery.com above...
Robt.
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05/25/2005 03:49:38 PM · #8 |
infrared photography works really well when you have blue skies and green/red/yellow foliage. I've done it a few times in ps using the channel mixer, dont remember how the exact settings but there are tons of tutorials out there on different methods of doing it.
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05/25/2005 03:56:11 PM · #9 |
done with a wratten 87A on the back of a 10.5mm
 
done with a tiffen #87 on a 24mm
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05/25/2005 03:57:40 PM · #10 |
Just a word of advice. The DPC community as a whole will give IR shots quite low scores. I personally don't care one bit about scores (I do it for FUN ), but if you care watch out. I think they are scored lower, because of the missunderstanding of the medium. I've been shooting IR for almost 20 years and love it.
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05/25/2005 03:59:58 PM · #11 |
I like to do a spot of infrared.
Lots of info Here.
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05/25/2005 04:00:13 PM · #12 |
Originally posted by longlivenyhc:
Originally posted by sabphoto:
You use a special filter that blocks all infared light. |
you mean, blocks everything except infrared light. |
oops my bad...thanks for the correction. |
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05/25/2005 06:35:27 PM · #13 |
Originally posted by bear_music:
Infrared light is a spectrum of light not visible to the naked eye. It can loosely be defined as "photographing heat"; warmer things tend to show up stronger in infrared shots, and we cook with infrared radiation sometimes. In the old days, they built film that was sensitive only to IR radiation; no filter was required.
In a digital cam the sensor is sensitive to ingfrared radiation up to a point, but it's only part of the spectrum the cam reads. So you use a filter that only passes through the IR radiation, to emulate the results of films sesnitive only to those rays.
...
Robt. |
Just to add to the confusion, the term "infrared light" is actually used for two totally different things: near-infrared and thermal infrared. It's the former we are all talking about here, thermal radiation is just as invisible to a regular digital camera as it is to us. There are thermal infrared cameras (called long-wave or mid-wave IR) and I'm in fact trying to spec one for my company right now, but those start in the $10K price range for a camera with a 320x240 sensor! So, no, an object radiating heat doesn't look any different from a cold object in near-infrared, it's all a question of how much light it reflects in the near-IR spectrum.
BTW, although a photoshop action can make an image look somewhat like near-IR, it is physically impossible to totally emulate IR in photoshop. It's just like colorizing a black & white photo, with a lot of work you can make it look somewhat natural, but never perfect. |
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