Re: 87c vs. 25A

[PeteScherm@xxxxxxx]

In a message dated 5/16/00 7:13:31 PM Eastern Daylight Time, 
owner-infrared-digest@xxxxx writes:

<< Jim, my experience has shown a real  difference between 87c and 
 25.  However, a lot depends on circumstances.  I have some 
 Konica 750 negatives which look more like HIE.   >>

I was just about to toss-in a word of warning about the 87c with Konica, but 
it guess this puts my concerns to rest.  I only use the "regular" #87 with 
Konica, and it works fine.  But I wasn't sure about the even "darker" - by 55 
nm @ 50% transmission - 87c.  That's good to know that there's still a bit of 
sensitivity left in the Konica at those wavelengths, although the ASA must be 
fun.  I generally notice a 6-stop loss when metering through the  #87 filter, 
giving me a low single digit ASA.


Pete Schermerhorn, in the glorious Berkshire hills of western Massachusetts
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