Re: Brands of Infra-red film???

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

On 22 Jun 98 at 18:54, The Ghost Hunter wrote:

> I was curious, about who and what are all the different types of infra-red film?
> 
> I know of the following b&W negatives;
> KODAK HIE
> ILFORD SFX200 (extended red)

Agfa makes a similar extended-red as SFX200, the Agfa APX200S.
Also originating from traffic-camera applications, just like Ilford.

> KONICA (extended red)

Konica is a true infrared, sensitive up to 840nm. Kodak goes to 
940nm, and Ilford/Agfa only to 740nm.

Note that Ilford/Agfa deserve the title 'pseudo-infrared', simply 
because the Wood-effect (white foliage) starts at 695nm....that is 
of course below the visible limit (780nm), but it is also the most 
significant image element of the true-infrared films....



 

- -- 
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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