Archived posting to the Leica Users Group, 2007/02/05

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Subject: [Leica] IMG: More IR on M8
From: philippe.orlent at pandora.be (Philippe Orlent)
Date: Mon Feb 5 10:23:57 2007
References: <0932DE6E-3A64-4FF4-A525-D284D1DA3D84@mac.com>

Very tempting to go IR.
Thanks for showing,
Philippe




Op 5-feb-07, om 05:53 heeft Robert Rose het volgende geschreven:

> Some more IR images, from the Getty Museum in Los Angeles.
>
> http://gallery.leica-users.org/v/rjrose/IR/L1000407.jpg.html
> http://gallery.leica-users.org/v/rjrose/IR/L1000412.jpg.html
> http://gallery.leica-users.org/v/rjrose/IR/L1000421.jpg.html
>
> There are two non-IR images in the same album, to compare.  Which  
> do you think works better?
>
> The amount of exposure necessary really varies throughout the day.   
> The A setting does a good job on exposure.  At times really high  
> ISO is needed, but the noise ("grain") reminds me of the grain from  
> Kodak High Speed Infrared.
>
> A red filter doesn't seem to work well.
>
> Some of the images (not these) are fuzzy.  I am pretty sure that it  
> is not focus shift; perhaps it is a cousin to blooming that occurs  
> in IR film.  Sharpening helps, as does slight underexposure.
>
> I am using Adobe Camera Raw to open the DNG file.  I turn on the  
> clipping warnings, and then adjust the Temperature and tint to  
> minimize clipping.  Then I use Nik Color Efex Pro; BW Conversion  
> Tonal Enhancer to convert to BW, and then do a final adjustment  
> using Levels.  Bringing the middle slider up seems to make the  
> image more dramatic.
>
> Lots of fun research ahead.
>
> Cheers,
> Bob Rose
>
>
> Robert Rose
> robert.rose@mac.com
> Experience should teach us to be most on our guard to protect  
> liberty when the government's purposes are beneficent. Men born to  
> freedom are naturally alert to repel invasion of their liberty by  
> evil-minded rulers. The greatest dangers to liberty lurk in  
> insidious encroachment by men of zeal, well-meaning but without  
> understanding.  Louis Brandeis, Olmstead v. US (1928)
>
>
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In reply to: Message from robert.rose at mac.com (Robert Rose) ([Leica] IMG: More IR on M8)