total darkness

[Greg Pease <gpp@xxxxxxxxx>]

Andy Finney wrote:
>
>> Q?  Do you really need to load this new film in complete darkness as
>> the
>> can says?  I wasn't inclined to test that facility.
>
>Note to Andy and others who are using this film: The new Ektachrome
>Infrared Film does not a light piping protective dye. It is possible to
>fog the film if left in a bright light for some time (this is a problem
>with visible, not infrared).
>
>I took some pictures with this film last fall in the bright sunlight. At
>that time, I loaded and unleaded a Minolta Maxxum 7000 camera in the
>bright sun light, and only had fog around the perforations of the first
>few frames. In one scene, on one roll, I did get a very slight bit of
>fog in the frame. (I mentioned the camera type, because this camera also
>has a small glass area on the back of the camera to identify the film
>type.) For a very critical set of pictures, you should take these
>precautions on loading & unloading the film. (A change bag could be used
>for this, since it only has to be visible, not infrared safe.)


Helmut FAUGEL wrote:
>> They briefly mention Ektachrome IR among other slide films, and state 
>> that it must be darkloaded. I believe I have seen this (false) claim 
>> before, I think on the Kodak site, right?
>
>The german datasheets about Kodak IR-films claim that this films must
>be loaded in total darkness, so its no wonder that ColorFoto writes
>the same.
>
>> Though the recently mentioned lack of antihalation layer does make 
>> one suspicious....
>
>The author writes that the due to the lack of the antihalation layer
>the filmbase guides light in the 'box' (sorry don't know the term).
>
>BTW: Once I had the chance to see how good antihalation layers work.
>     My trusty old Minolta X-700 crashed on concrete and the back
>     opened, it took some seconds to close the back. Seven
>     frames were exposed (five were total ruined, the two other
>     showed partly). 


So, I was still working on ironing out my plus density and mold-looking 
pinholes (or air bubbles?) problems when I read these posts.  I figured 
I'd put these claims to the test also.  I loaded a roll of HIE in open 
shade.  The midday sun was blocked by my body.  I loaded the film as fast 
as I could.  THE RESULTS...the first 6 frames are totally fogged, no 
image what-so-ever!  The next 5 frames have bands of fogging.  The next 8 
frames have fog on the sprocket holes.  Making a grand total of 19 frames 
fogged!  Looks like I am going to stick to loading and un-loading my HIE 
in a changing bag.  
I noticed that these posts had the title "KODAK EKTACHROME"  but the 
mention of 
>I took some pictures with this film last fall
leads me to believe the post is actully refering to HIE since HIR has 
only been available for a few weeks.  Or were they refering to the old 
Kodak color IR film?  Any way, my test was with HIE.  I hope this will 
prevent a lot of lost shots! :-)

Regards,
Greg Pease

- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

                     Greg Pease & Associates, Inc.
                         23 East 22nd. Street
                     Baltimore, Maryland 21218 USA
                  phone 410-662-4994 fax 410-662-1797
            greg@xxxxxxxxxxxxxxxxxx  www.gregpeasephoto.com


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End of Infrared-Digest V0 #83
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