Maco IR

[GnsXEDGE@xxxxxxx]

I've now finished my 4th test of Maco IR 4X5 and have concluded it is 
worthless. My first test was using a Wratten 87 filter at ISO 6. Using the 
times given by my meter (f 11 4") and developed in D76 for 12 minutes I 
received negatives that were at least 4 stops underexposed. My next test was 
ISO 6 opened one more stop (f11 8") this gave me the same results. Next I 
tried something different I used a Wratten 87 filter for the time give by my 
meter set at ISO 6 (f 11 10 ") then I removed the filter and exposed the film 
for half the time my meter recommended without the filter at ISO 160 (f11 45) 
This gave me a slightly underexposed negative, but no IR effect. My last 2 
test were using the Wratten 87 filter and my meter set at ISO 3 plus 3-5 
stops overexposure. The last test were as follows: Meter: f16 8"-15" at ISO 3 
no filter was used, actually exposed at f16 20", I received a nicely exposed 
negative. f16 30" with 87 filter at least 4 stops underexposed f16 45" 87 
filter at least 4 stops underexposed. 
So my results are worthless, has anyone received anything at all from this 
film?
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