Mailinglist Archives:
Infrared
Panorama
Photo-3D
Tech-3D
Sell-3D
MF3D

Notice
This mailinglist archive is frozen since May 2001, i.e. it will stay online but will not be updated.
<-- Date Index --> <-- Thread Index --> [Author Index]

semicircles in sky

  • From: "Joseph Demanuele" <jdemanuele@xxxxxxxxxxxx>
  • Subject: semicircles in sky
  • Date: Wed, 1 Oct 1997 10:36:30 +0200
Hi everyone!

I use the Kodak B&W emulsion rated at 400ASA (it is very sunny in Malta
- -lots of IR !). I normally use a standard red filter and develop in Rodinal
1+25 for 10 minutes at 24 degrees. My problem is that I sometimes get large
semicircular arcs over the sky. These span all the sky in the image and
look like multiple rainbows (in B&W of course).
Has anyone got any idea about what's causing this!

BTW I normally use a minolta 600si and meter through the lens with the
filter attached. This seems to give an adequate exposure  a lot of the
time.

Joe 



*
****
*******
******************************************************
*  To remove yourself from this list, send:          *
*         UNSUBSCRIBE INFRARED                       *
*       to                                           *
*         MAJORDOMO@xxxxx                            *
*----------------------------------------------------*
*   For the IR-FAQ, IR-Gallery and heaps of links:   *
*  http://www.a1.nl/phomepag/markerink/mainpage.htm  *
******************************************************

------------------------------