RE: Detail in IR highlights

[Clive Warren <Clive.Warren@xxxxxxxxxxxxxx>]

At 9:30 am -0500 9/10/00, R. C. Lacovara wrote:
>
>
>I note from Kodak's data sheet that the roll films are 4 mil Estar, 
>but the 4x5 sheet film is 7mil. I wonder if this has any effect on 
>the amount and appearance of halation. And if there's any of the 
>Kodak 4x5 around?
>
>Bob


There are still a few boxes of 4x5 HSI available if you are willing 
to look for it. As you probably know, Kodak discontinued the film for 
a number of reasons.

You make an interesting point about the potential for difference in 
halation effects between HSI and HIE.  My guess is that there will be 
little measurable difference between the two films.

This is not an excuse to start talking about pin prick holes in the 
emulsion layer - please hold yourselves back if you were thinking 
about it ;-)

-- 
All the best,

              Clive   http://www.cocam.co.uk
                      Photographic Services, Filters and Equipment, Infrared FAQ
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