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]

Rollei Infrared Filter Question

  • From: "James Bielecki" <bieleckj@xxxxxxxxxxx>
  • Subject: Rollei Infrared Filter Question
  • Date: Fri, 03 Mar 2000 16:40:39 -0500
We have an old Rollei Series VI infrared filter that doesn't have any reference on it regarding it's IR designation.  I do believe it's IR cutoff point is 695nm (from an old book I found) and the filter is dark red, actually almost opaque.   Can any of you folks give me an idea of what factor it is?  89B?  87C?  

Jim Bielecki



*
****
*******
******************************************************
*  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  *
******************************************************