Re: PHOTO-3D digest 2359

[P3D Ole Hansen <olejohan@xxxxxxxxxxx>]

John Fairstein  <jfairstein@xxxxxxx> wrote:

> They were Leopold Mannes and Leopold Godowsky.
> I think they did their work in the 1920s at home.
They were chemists, and for the fun of it amateur musicians.
They were employed by Kodak as chemists to make a colorfilm,
and they worked in the Kodak lab.

> Does the Realist 3.5 lens rated at 80 lines/mm exceed
> the resolving power of the film?
No - but the better lenses does, reaching a max of 120 l/mm at
f:8 and f:11, which was about the resolving power of Kodacrome.
Want to see my old slides ? No color change from 1953 till today !
Wonderful product compared to Ektacrome - they are all magenta :-(
The Fuerier function of resolving power was never defined as far as
I now - please entlighten me if I am wrong.

John Ohrt  <johrt@xxxxxxx> wrote:
> However, (and lacking my notes) Kodachrome 64 likely has
> a resolution greater than 100 lpm.
Kodacrome 64 did not exsist in the days of Kodacrome ;-)

Paul Talbot  <ptww@xxxxxxxxx> wrote:
> Why does the RBT mount instruction sheet say to use a
> European format gauge instead of a Realist format gauge?
Because the near point distance in 7P is 1.3 mm as compared
to 5P, where it is 1.15 mm (all depending on the camera).

regards
Ole Hansen - olejohan@xxxxxxxxxxx



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