Re: DAYLIGHT, LOADABLE, Kodak, B&W, Infrared, Film, for, sale,$8.45/roll

[ADavidhazy <ANDPPH@xxxxxxxxxxxxxxxxxx>]

Rolland,

> 1.  You were using casettes with transparent IR felts. Almost all bulk
> loadable film casettes' felts leak IR light. Only a couple of manufacturers
> use IR opaque felt material and even then they do not consistently use the
> material. <snip>

You are very right on this. I did not check on IR opaqueness or reflectivity of
of the felt material. Was using standard "non-reloadable" Kodak and Fuji
casettes (but reloading by attaching raw stock to the end stub).

> 2.  Just because you exposed and developed B&W film so that it has an
> opaque emulsion COATING to IR light DOES NOT mean that the film base will
> NOT pipe light through to the inside of the casette. <snip>

Agreed. But this I had checked out and there was no "piping" taking place.
I had used Tech Pan and T-Max 100 processed to D-max as leaders.

cheerio,

Andrew  o o  0 0 o . o  Davidhazy, Imaging and Photo Tech
         \/\/\/\/\/\/          http://www.rit.edu/~andpph
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