Re: EIR Mounting Problem

["Willem-Jan Markerink" <w.j.markerink@xxxxx>]

On 11 Feb 00 at 19:12, Ralph Johnston/Linda Sherman wrote:

> Hello Infrared people -I just had a roll of EIR (Ektachrome
> Infrared) developed E-6 by Color Services in Needham, MA.  This
> was my first roll.  The exposures were either a little too dark or
> too lig t even though I bracketed some of them.  I guess the meter
> sensitivity is not for IR.  These were taken with a 28mm f/2.8
> lens on a Nikormat with a #12 yellow filter. 

EIR is very 'touchy' for correct exposure....a half stop too dark 
will only reveal a strong false-color image, a half stop too light 
will create a washed out image, while only accurate exposure will 
show the IR-effect most people are looking for. Very erratic in color 
shift, as if the different color layers react very differently on 
exposure (to the point that I have been pondering about a filter that 
blocks visible light very evenly (from yellow to red) for say 50%, 
while letting IR pass unaffected....should experiment a bit with ND 
grey filters, as most don't affect IR....same for polaroid).

> They couldn't use their auto-mounting machine.  I asked if the
> film was too thick -they said the texture made it not work.  So I
> am about to mount them myself using a Hama lighted cutter and
> slip-in plastic mounts. 

Wasn't EIR to thin & curly/springy to be mounted?
All aerial films are thinner than average consumer films (with 
reversal film already thinner than negative I believe)....

--                 
Bye,

Willem-Jan Markerink


      The desire to understand 
is sometimes far less intelligent than
     the inability to understand


<w.j.markerink@xxxxx>
[note: 'a-one' & 'en-el'!]
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