Um,I think that perhaps we might need the filtration info because I
suspect that the filter factors were included in the exposure
increases.This could result in overexposure of your slides as well as
the obvious uncorrected color cast.Yes,I do have a set of Kodak CC
(gelatine) and some (glass) Tiffen CC filters.
-Gene Mayeda
Ian M. Stewart wrote:
>
> Hi everyone,
>
> I came across this table in the English (UK) Photo Technique magazine. I
> know it's offending copyright, but I hope to get away with it :) These are
> supposed to be recommended figures to compensate for reciprocity failure.
> NR means 'not recommended' and the compensation is given in stops. e.g. +
> 0.33 means plus one third stop. The table also gave recommended filters
> to compensate for the change in colour, but as most people don't have a
> comprehensive set of filters I've not included that information.
>
> FILM
> < 1 sec 1 sec 10 sec 100 sec
> Ektachrome 64 nil +0.5 NR NR
> Ektachrome 100 nil +0.5 NR NR
> Kodachrome 64 nil + 1 NR NR
>
> < 1 sec 1 sec 10 sec 60 sec
> Kodachrome E100SW nil nil nil +0.33
>
> < 1sec 4 sec 16 sec 64 sec
> Velvia nil + 0.33 + 0.66 NR
>
> < 16sec 34 sec 120 sec 480 sec
> Provia nil + 0.5 + 1 NR
>
> < 32 sec 64 sec 120 sec 480 sec
> Astia nil + 0.33 + 0.5 NR
>
> < 1 sec 1 sec 10 sec 60 sec
> Agfa RSX50 nil nil + 0.66 + 1
>
> < 1 sec 1 sec 10 sec 100 sec
> Agfa Scala nil + 0.5 + 1 + 2
>
> < 1 sec 1 sec 10 sec 35 sec
> Ilford FP4 plus nil nil + 1.66 +2.5
>
> I hope some of you find this useful, no guarantees are offered against
> typos or for the veracity of the data. What I find interesting is the wide
> variation in these films. Does anyone have some similar info about colour
> print film?
> __
>
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