Re: Ektachrome IR 200ASA/+2push vs 50ASA/no push

["Randy R. De Frank" <rrpd@xxxxxxxxxxxxxxxx>]

Willem-Jan Markerink wrote:
> 
> Hi,
> 
> I was discussing the upcoming Ektachrome E-6 compatibility with a
> friend, and we got stuck in the discussion of why anyone would want
> to recommend a 200 ASA exposure with a +2 push development, instead
> of a 50 ASA exposure with no push. What possible motivation could one
> have to do so?
> My only encounter with push was with Fujichrome 800, shooting at
> 3200, and that doesn't really help much....
> 
> Any light on this subject, or am I pushing it?....;-))
> 
> --
> Bye,
> 
>        _/      _/       _/_/_/_/_/       _/_/_/_/_/
>      _/  _/  _/               _/       _/  _/  _/
>      _/  _/ illem    _/     _/ an    _/  _/  _/ arkerink
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> 
>       The desire to understand
> is sometimes far less intelligent than
>      the inability to understand
> 
> <w.j.markerink@xxxxx>
> [note: 'a-one' & 'en-el'!]

The new Kodak Ektachrome Professional Infrared EIR film does not need
a 2 stop push to get the apparent speed of 200 in process E-6. This is
just a characteristic of the process and film interaction. The Aerial
process (AR-5) generates a lower contrast and slower apparent film 
speed.

Randy DeFrank (Eastman Kodak Company, Rochester, NY)

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