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Old Aug 29, 2005, 10:02 AM   #1
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HI,

i have searched the web for this, send a lot of emails, but noone replied back

i have heliopan715 ir filter, but it seems i cant get the right settings to get usefull images to work with in photoshop ... i cant get that clear white color! i have tried with pentax IstDS and nikon d70 ...

so if anyone can give me some tips ... thanks



best regards,
Heki
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Old Sep 2, 2005, 11:47 AM   #2
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If you search "IR photography" with google or yahoo, you will get many information pages, may be it will help
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Old Sep 2, 2005, 11:47 AM   #3
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If you search "IR photography" with google or yahoo, you will get many information pages, may be it will help
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Old Sep 12, 2005, 1:25 PM   #4
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http://dpfwiw.com/ir.htm

Post some shots with your settings and results.
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Old Sep 20, 2005, 6:35 PM   #5
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I don't have the Heliopan filter. I use the Cokin P007 IR which is equivalent to Wratten 89B. I have gotten the best results as follows: (there is probably a better way.)
I mount the camera on a sturdy tripod and fram the image. I use manual focus and autoexposure. I shoot one color shot as a reference. I then mount the filter and without changing anything, I shoot the same image.

Back on the computer, I have gotten the best results by splitting the IR image into RGB channels. I discard the blue and green channels. The red channel image seems to be closest to pictures I have seen on the web. I usually adjust the contrast and brightness a bit and do an unsharp mask.

FYI, splitting to RGB generates three monochrome images, one for each color, with the brightness representing the level of the respective color.

I have tried desaturating the IR image or converting to grayscale the the results in both cases were very poor.

Cal Rasmussen

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Old Sep 24, 2005, 4:05 AM   #6
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thx guys, well i found out that cwb is a must be ... got preaty good pictures, but i am still in a progress of learning. i will post some when i am happy with it.

thank you all!
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Old Sep 27, 2005, 8:53 AM   #7
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i wrote a small tutorial about whitebalancing and channel shifting color ir photos.

http://xdeltax.com/infrared/index.html

(but it's in german language)


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Old Sep 27, 2005, 9:09 AM   #8
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wao, that is a good tutorial. my german isnt that good ...

ill try it anyways



thx
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