RE: filter for EIR

[Järventaus, Hannu <hannu.jarventaus@xxxxxxxx>]

Title: RE: filter for EIR

On Wednesday, June 02, 1999 1:40 AM, lxzhang@xxxxxxxxxx [SMTP:lxzhang@xxxxxxxxxx] wrote:
>
> I am gonna try out a roll of EIR. The datasheet says I have to use a
> Wratten 12 filter. In www.al.nl
> BW 099, or Schott OG530, is listed equivalent to Wratten 12. Is that to say
> I can just buy a BW099 and put it on to shoot EIR?
>
> There are confusing sayings. Some say a dark yellow filter is OK for EIR.
> Someone however says a standard yellow is good enough, as he does not like
> an orange filter for EIR. (he seems to believe BW099 is an orange filter.)
> Well I understand that everyone has his own taste.
>
> My question: if I use a dark yellow, can I just take a BW023, or can I just
> use BW040 (yellow orange)? What is the point that I have to use BW099,
> which is much more expensive?
>
> Loui

My best pictures with EIR are taken using Hoya orange filter (G).
Yellow filter gives colder pictures and red filter gives warmer.
So you should try BW040 filter, which is quite near Hoya G.
I have used EI 320 and 400 in my Canon EOS 600 camera
for this film and filter combination.
You should bracket the exposures.

Hannu