Re: Reverse loading and using a shinny Aluminum pressure pl

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

On 12 Apr 98 at 23:47, Rolland Rainbow Elliott wrote:

> So, give aluminum foil a try and tell me if you think it makes a difference. 
> I'll let you know what I see as soon as I make bigger prints.

This experiment is only valid if you can compare the alu results with 
a fully absorbing pressure plate....one variable left is how much 
each and every pressure plate reflects to begin with....it might be 
opaque to the eye, but can be highly reflective for IR.
I believe this is not uncommon with anodized (sp?) aluminium 
(aluminum for the Yanks....;-))

OTOH, my Horizon 202 panorama camera doesn't have any kind of 
pressure plate (the 24x58mm frame runs over a set of cylindric film 
rails, with a variable distance of 5-20mm from the plastic back door.
And I can't say the highlights are less than in my EOS-1 (for samples 
see my homepage, URL in the footer).
I have been pondering about adding an alu sheet in the 202, but never 
went in experimentation mode....

 

- -- 
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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