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Posted: Wed Apr 24th, 2013 07:11
 
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jk



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Eric wrote: TomOC wrote: My thought is that one should bite the bullet and have a sensor adapted to IR to make IR images...especially since you just may choose a COLOR image :-)

Interesting idea, but too limited to spend much time on....

Thanks for convincing me :-)

I just convinced myself 'out' of leaving the D200IR at home when I go on holiday. More weight to carry!
:needsahug:

Of course the other good thing about the IR sensor conversion, is there is some residual colour in the image (more or less depending on the filter choice). This subliminal colour can be worked on in CS to produce interesting effects with very little effort....

I really do like this image (EVENTIDE).  Everything about it is great!   Love the crows in the sky the lines of the landscape, the light in general.

I would love to have the original NEF so I could see the original and then see how you have managed to get to the final image.



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Posted: Wed Apr 24th, 2013 07:25
 
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jk



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OK I'll try and dig out the text of the how from the Popular Photography article.

Have to make it an image rather than just text.

Attachment: False IR Steps.jpg (Downloaded 26 times)



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Posted: Wed Apr 24th, 2013 12:08
 
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Eric



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jk wrote: OK I'll try and dig out the text of the how from the Popular Photography article.

Have to make it an image rather than just text.



Okay there is more adjustment in that sidecar than I previously thought....confess I didnt look at the Basic sliders.

Having worked through the worded steps, I still maintain that the problem is limited, stepped colour adjustment of a continuous tone image. You HAVE to drop the sky tone down to black to hide the banding of colour steps. Its almost posterising!

here's halfway....

 

Attachment: banding.jpg (Downloaded 24 times)



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Posted: Wed Apr 24th, 2013 14:30
 
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jk



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I made the xmp file but I followed the article steps and then did a Save Settings. So any deficiencies are either a mistake I have made or a miss in the article content.

It may be that I didnt use the actual value from the article as I was testing it for my image.



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Posted: Wed Apr 24th, 2013 14:45
 
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Eric



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jk wrote:
I made the xmp file but I followed the article steps and then did a Save Settings. So any deficiencies are either a mistake I have made or a miss in the article content.

It may be that I didnt use the actual value from the article as I was testing it for my image.


I don't think it's the content of your file Jonathan...I just think with this method you blitz all the element colours, irrespective of whether they would respond naturally to IR. But it's the steps that concern me.



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Posted: Wed Apr 24th, 2013 15:00
 
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jk



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OK. One aspect seriously worried me was the conversion to greyscale. This destroys all colour info. I dont lke this as I like to have colour in my IR.

I also tried taking the B&W and the original colour image and combining this produced some really false colour IR images that I am still experimenting with. I am sure that the 'kooky' images look very 1970s psychadelic and strange but would cause heart failure for many purists!



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Posted: Wed Apr 24th, 2013 15:18
 
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Eric



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jk wrote:
OK. One aspect seriously worried me was the conversion to greyscale. This destroys all colour info. I dont lke this as I like to have colour in my IR.

I also tried taking the B&W and the original colour image and combining this produced some really false colour IR images that I am still experimenting with. I am sure that the 'kooky' images look very 1970s psychadelic and strange but would cause heart failure for many purists!


I had wondered about the grayscale conversion BEFORE the colour adjustments. You effectively drop to a lot less (128) shades of 'grey' and then try to work on them?????

Its the opposite to the established logic for grayscale images ... When you scan a photo, you should always scan in RGB and then convert to grayscale rather than scanning in grayscale from the outset.



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Posted: Wed Apr 24th, 2013 17:25
 
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Robert



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jk wrote:
I also tried taking the B&W and the original colour image and combining this produced some really false colour IR images that I am still experimenting with. I am sure that the 'kooky' images look very 1970s psychadelic and strange but would cause heart failure for many purists!

Me, Purist? :devil:

Attachment: Screen Shot 2013-04-24 at 23.23.51.jpg (Downloaded 18 times)



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Posted: Thu Apr 25th, 2013 00:36
 
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Holy tomales...what have I started.

Now I'm convinced I need an IR converted D2x :-)

Great stuff, guys...this thread should be archived



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Posted: Thu Apr 25th, 2013 01:54
 
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Eric



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Robert wrote:
jk wrote:
I also tried taking the B&W and the original colour image and combining this produced some really false colour IR images that I am still experimenting with. I am sure that the 'kooky' images look very 1970s psychadelic and strange but would cause heart failure for many purists!

Me, Purist? :devil:


Robert.....you are going to have to stop eating those mushrooms!



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