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]

Re: Rollei - hellrot red filter


  • From: Jeff Spirer <jeffs@xxxxxxxxxxxxx>
  • Subject: Re: Rollei - hellrot red filter
  • Date: Thu, 31 Oct 1996 06:42:42 -0800

At 02:31 PM 10/31/96 +0000, Hannu Jarventaus wrote:
>
>Hello!
>
>I just bought a Rollei-hellrot red filter (used) for my
>old Rolleicord III, and I will try to take some pictures
>using Konica IR 750 in 120 size. Does anybody know, what is
>the filter factor or what could be the equivalent Wratten
>(or other) filter?

Rollei literature says that this filter has a 2 to 3.5 filter factor
depending on applications.  This seems like a rather wide range to me, but
this is what they say it should be.

Jeff Spirer
http://www.hyperreal.com/axiom/
Axiom Records/Material Communications


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

Topic No. 10