Digital BW, The Print

Jerry, Here are links to the images.
Out of camera, no adjustments:
http://homepage.mac.com/scho/D30IR/CRW_0675.jpg
RGB mode, autolevels:
http://homepage.mac.com/scho/D30IR/CRW_0675_2.jpg
Greyscale converted:
http://homepage.mac.com/scho/D30IR/CRW_0675g.jpg

This test image was shot at ISO 100, RAW mode, mirror lock-up enabled, long
exposure noise reduction ON, manual exposure mode, 3 sec at f/11.  The
filter was a Hoya R72 (Wratten 89B) which is a deep red filter that leaks a
little visible light as well as passing all of the near infrared.  The
autoleveled RGB image shows this mixture of visible and infrared light.  I
either convert to greyscale using the lightness channel in LAB mode or use
the channel mixer.

Carl

From: Jerry Olson <jerryolson@...>
Reply-To: DigitalBlackandWhiteThePrint@yahoogroups.com
Date: Thu, 17 Jan 2002 10:29:51 -0600
To: DigitalBlackandWhiteThePrint@yahoogroups.com
Subject: Re: [Digital BW] Shooting Digitally


Carl, The search engine isn't working, do you know what page those
images are on?

Once you've taken a photo with the red filter, I assume you'd have a
very red photo. How do you change it to Black and white infrared?

Is an 87 filter the opaque one, or just a very deep red?

Thanks

Jerry

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